CN202888358U - Communication radio frequency device and filter of the same - Google Patents
Communication radio frequency device and filter of the sameDownload PDFInfo
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- CN202888358U CN202888358UCN 201220287485CN201220287485UCN202888358UCN 202888358 UCN202888358 UCN 202888358UCN 201220287485CN201220287485CN 201220287485CN 201220287485 UCN201220287485 UCN 201220287485UCN 202888358 UCN202888358 UCN 202888358U
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Abstract
Description
Technical field
The utility model embodiment relates to the signal process field, specifically relates to a kind of communication radio frequency device and filter thereof.
Background technology
In the prior art, the TE mould (transverse electric mode) of filter but be a kind of excited modes in the microwave transmission, its electric field only has cross stream component, then all there is component in magnetic field on all directions.TE mould ceramic dielectric resonator generally is comprised of metallic cavity and ceramic dielectric block, and use the filter of this TE mould ceramic dielectric resonator, General Requirements is under the prerequisite of the less volume of product and lower loss, realize that the outer clutter of higher band suppresses, this just needs TE mould ceramic dielectric resonator to have higher quality factor (Q value).
See also Figure 1A to Fig. 2, Figure 1A is the signal transmission route schematic diagram of prior art TE mode filter, Figure 1B is the resonator magnetic direction schematic diagram at a time of filter shown in Figure 1A, Fig. 2 is the response curve indicatrix of TE mode filter shown in Figure 1, in Fig. 2, abscissa is frequency (unit is MHz), and ordinate is the amplitude (unit is dB) of response.
The TE mode filter comprises a plurality of TE mould ceramic dielectric resonators, for example comprise thefirst medium resonator 1 on the bottom surface that is arranged at intervals at different cavitys,second medium resonator 2, the 3rddielectric resonator 3 and the 4thdielectric resonator 4, during work, signal passes throughfirst medium resonator 1 successively,second medium resonator 2, the 3rddielectric resonator 3 and the 4thdielectric resonator 4, but be not difficult to find out from Fig. 2, this orderly transfer mode, filter does not form preferably inhibition point in its both sides at passband when response, namely the outer clutter inhibition of band is on the low side, does not realize higher Q value.
Please further consult Figure 1B, between firstmedium resonator 1 and the 4thdielectric resonator 4, at one time, the magnetic direction of one of them upwards, another magnetic direction is downward, be that magnetic direction between any time two resonators is substantially opposite, and cause to realize the electromagnetic field couples transmission between firstmedium resonator 1 and the 4thdielectric resonator 4; Furthermore, the magnetic-field component of TE mould ceramic dielectric resonator is difficult to distinguish, namely the electromagnetic field direction between impalpablefirst medium resonator 1 and the 4thdielectric resonator 4 also just can't realize its electromagnetic field couples.
Inventor of the present utility model is through further investigation, to obtain the utility model, realized the reversed polarity coupling of the magnetic field energy between the resonator through repeatedly experiment.
The utility model content
The technical problem that the utility model embodiment mainly solves provides a kind of communication radio frequency device and filter thereof, so that realize the reversed polarity coupling between the resonator of filter.
For solving the problems of the technologies described above, the technical scheme that the utility model embodiment adopts is: a kind of filter is provided, this filter comprises the first cavity and the second cavity that the interval arranges and vertically is installed on the first medium resonator of this first cavity bottom and vertically is installed on the second medium resonator of this second cavity bottom, and this filter also comprises coupling window and male part.This coupling window is located between this first cavity and this second cavity so that this first cavity and this second cavity are communicated with; This male part runs through this coupling window, these male part two ends are connected with this first cavity wall, the second cavity wall respectively, and the two ends of this male part lay respectively at the both sides of the center line of this coupling window, this first medium resonator and this second medium resonator three formation, so that this first medium resonator and this second medium resonator are realized the reversed polarity coupling.
For solving the problems of the technologies described above, another technical scheme that the utility model embodiment adopts is: a kind of communication radio frequency device is provided, and this communication radio frequency device adopts above-mentioned filter, and this filter is located at the transceiver circuit part of this communication radio frequency device.This filter is used for signal is selected, and this communication radio frequency device is single multiplexer, duplexer, splitter, mixer or tower amplifier.
For solving the problems of the technologies described above, another technical scheme that the utility model embodiment adopts is: a kind of filter is provided, this filter comprises the first cavity that the interval arranges and sequentially is communicated with, the second cavity, the 3rd cavity and the 4th cavity, and the first medium resonator that vertically is installed on this first cavity bottom, vertically be installed on the second medium resonator of this second cavity bottom, vertically be installed on the 3rd dielectric resonator of the 3rd cavity bottom and vertically be installed on the 4th dielectric resonator of the 4th cavity bottom, this first medium resonator, this second medium resonator, the 3rd dielectric resonator and the 4th dielectric resonator are sequentially realized the signal coupling transmission.This filter also comprises coupling window and male part: this coupling window is located between this first cavity and the 4th cavity so that this first cavity and the 4th cavity are communicated with; This male part runs through this coupling window, the two ends of this male part are connected with this first cavity wall, the 4th cavity wall respectively, and these male part two ends lay respectively at the both sides of the center line of this coupling window, this first medium resonator and the 4th dielectric resonator three formation, so that this first medium resonator and the 4th dielectric resonator are realized the reversed polarity coupling.
For solving the problems of the technologies described above, another technical scheme that the utility model embodiment adopts is: a kind of communication radio frequency device is provided, this communication radio frequency device comprises above-mentioned filter, this filter is located at the transceiver circuit part of this communication radio frequency device, be used for signal is selected, this communication radio frequency device is single multiplexer, duplexer, splitter, mixer or tower amplifier.
The utility model embodiment sets up coupling window between the cavity of interval setting, make between two cavitys and be communicated with, two ends by male part are connected with the sidewall of two cavitys respectively again, and because the two ends of male part lay respectively at the both sides of the center line of this coupling window and two resonator three formation, when the resonator in two cavitys produces magnetic field, the energy in its magnetic field is absorbed respectively by the two ends of the male part of these center line both sides, and its direction vector is identical after being coupled by male part, has finally realized the reversed polarity coupling of electromagnetic field and energy.The utility model example structure is simple, when having realized that reversed polarity is coupled between the resonator, is with outer clutter inhibition better, and possesses higher Q value.
Description of drawings
In order to be illustrated more clearly in the technical scheme among the utility model embodiment, the accompanying drawing of required use was done to introduce simply during the below will describe embodiment, apparently, accompanying drawing in the following describes only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Figure 1A is the signal transmission route schematic diagram of prior art TE mode filter;
Figure 1B is the resonator magnetic direction schematic diagram at a time of filter shown in Figure 1A;
Fig. 2 is the response curve indicatrix of TE mode filter shown in Figure 1;
Fig. 3 is the structural representation of the utility model filter one embodiment;
Fig. 4 is the structural representation of the male part of filter shown in Figure 3;
Fig. 5 is the structural representation of another embodiment of the utility model filter;
Fig. 6 is the structural representation of an embodiment of filter shown in Figure 5;
Fig. 7 is the schematic flow sheet of the resonator magnetic coupling method of the utility model filter; And
Fig. 8 is the response curve indicatrix of the filter that provides of the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
The utility model embodiment provides a kind of filter, this filter comprises the first cavity and the second cavity that the interval arranges and vertically is installed on the first medium resonator of this first cavity bottom and vertically is installed on the second medium resonator of this second cavity bottom, and this filter also comprises coupling window and male part.This coupling window is located between this first cavity and this second cavity so that this first cavity and this second cavity are communicated with; This male part runs through this coupling window, these male part two ends are connected with this first cavity wall, the second cavity wall respectively, and the two ends of this male part lay respectively at the both sides of the center line of this coupling window, this first medium resonator and this second medium resonator three formation, so that this first medium resonator and this second medium resonator are realized the reversed polarity coupling.
The utility model embodiment has solved between the resonator in prior art two cavitys can't direct-coupled problem, furthermore, the direction in the magnetic field that produces in same time for first medium resonator and second medium resonator is difficult to predict the situation of judgement, the utility model embodiment adopts the mode of coupling window and male part, makes and realizes the reversed polarity coupling between first medium resonator and the second medium resonator.The filter construction of the utility model embodiment is simple, when having realized that reversed polarity is coupled between the resonator, is with outer clutter inhibition better, and possesses higher Q value.
The utility model embodiment also provides a kind of communication radio frequency device, and this communication radio frequency device adopts above-mentioned filter, and this filter is located at the transceiver circuit part of this communication radio frequency device.This filter is used for signal is selected, and this communication radio frequency device is single multiplexer, duplexer, splitter, mixer or tower amplifier.
The filter construction that the communication radio frequency device of the utility model embodiment adopts is simple, when having realized that reversed polarity is coupled between the resonator, is with outer clutter inhibition better, and possesses higher Q value.
The utility model embodiment also provides a kind of filter in addition, this filter comprises the first cavity that the interval arranges and sequentially is communicated with, the second cavity, the 3rd cavity and the 4th cavity, and the first medium resonator that vertically is installed on this first cavity bottom, vertically be installed on the second medium resonator of this second cavity bottom, vertically be installed on the 3rd dielectric resonator of the 3rd cavity bottom and vertically be installed on the 4th dielectric resonator of the 4th cavity bottom, this first medium resonator, this second medium resonator, the 3rd dielectric resonator and the 4th dielectric resonator are sequentially realized the signal coupling transmission.This filter also comprises coupling window and male part: this coupling window is located between this first cavity and the 4th cavity so that this first cavity and the 4th cavity are communicated with; This male part runs through this coupling window, the two ends of this male part are connected with this first cavity wall, the 4th cavity wall respectively, and these male part two ends lay respectively at the both sides of the center line of this coupling window, this first medium resonator and the 4th dielectric resonator three formation, so that this first medium resonator and the 4th dielectric resonator are realized the reversed polarity coupling.
Set up coupling window between the first cavity that the utility model embodiment arranges at the interval and the 4th cavity, make between the first cavity and the 4th cavity and be communicated with, two ends by male part are connected with the sidewall of the first cavity with the 4th cavity respectively again, and because the two ends of male part lay respectively at the both sides of the center line of this coupling window, first medium resonator and the 4th dielectric resonator three formation, when the resonator in the first cavity and the 4th cavity produces magnetic field, can realize the reversed polarity coupling.The utility model example structure is simple, has realized reversed polarity coupling between the resonator, is with outer clutter inhibition better, and possesses higher Q value.
The utility model embodiment also provides a kind of communication radio frequency device in addition, this communication radio frequency device comprises above-mentioned filter, this filter is located at the transceiver circuit part of this communication radio frequency device, be used for signal is selected, this communication radio frequency device is single multiplexer, duplexer, splitter, mixer or tower amplifier.
The filter construction that the communication radio frequency device of the utility model embodiment adopts is simple, when having realized that reversed polarity is coupled between the resonator, is with outer clutter inhibition better, and possesses higher Q value.
Hereinafter be described in conjunction with concrete accompanying drawing embodiment.
Embodiment one, sees also Fig. 3 and Fig. 4, and Fig. 3 is the structural representation of the utility model filter one embodiment, and Fig. 4 is the structural representation of the male part of filter shown in Figure 3.
The present embodiment filter include but not limited to thefirst cavity 10, thesecond cavity 20 that the interval arranges and be located at thefirst cavity 10 and thesecond cavity 20 betweencoupling window 30.
Thefirst cavity 10 and thesecond cavity 20 all can adopt the electric conducting materials such as metal to make, and thefirst cavity 10 bottoms vertically are equipped withfirst medium resonator 101, thesecond cavitys 20 bottomssecond medium resonator 201 are installed vertically.In the present embodiment,first medium resonator 101 andsecond medium resonator 201 are TE mould ceramic dielectric resonator, it is formed by the stacked setting of a plurality of ceramic dielectric block, the main direction in the magnetic field of its generation is roughly parallel to the axial direction of residing cavity, be similar to the magnetic signature of the earth, because belonging to prior art, in the scope that the art personnel understand, do not give unnecessary details.Need to prove, in the identical moment,first medium resonator 101 is basically opposite with the direction in the magnetic field thatsecond medium resonator 201 produces at one time.
In order further to guarantee the coupling effect betweenfirst medium resonator 101 and thesecond medium resonator 201, cooperate atcoupling window 30 and to be provided with themale part 31 that electric conducting material such as metal-made get,male part 31 is throughcoupling window 30, the two ends ofmale part 31 are connected with thefirst cavity 10 sidewalls, thesecond cavity 20 sidewalls respectively, and the two ends ofmale part 31 lay respectively at the both sides of the center line ofcoupling window 30,first medium resonator 101 andsecond medium resonator 201 threes formation.
Particularly,male part 31 comprises thefirst coupling part 311, thesecond coupling part 312 and theconvergence part 313 that connects thefirst coupling part 311 and thesecond coupling part 312, preferably, reduce cost in order to save material, balance each other for vertical bar shaped and with this center line inconvergence part 313, as previously mentioned, magnetic signature according tofirst medium resonator 101 andsecond medium resonator 201, thefirst coupling part 611 and thesecond coupling part 612 lay respectively at different both sides,convergence part 613, realizing the reversed polarity coupling between firstmedium resonator 101 and thesecond medium resonator 201, the connected mode between itself and thefirst cavity 10 and thesecond cavity 20 is as follows.
The sidewall of thefirst coupling part 311 and thefirst cavity 10 is electrically connected and forms the first equivalent magnetic flux ring A, that is to say, be similar to the galvanomagnetic effect principle of coil, sidewall at thefirst coupling part 311 and thefirst cavity 10 cooperates the first equivalent magnetic flux ring A that forms, the angle that the plane at the direction place in the magnetic field that the plane at its place and firstmedium resonator 101 produces becomes to be scheduled to, for example at a time, the magnetic field that firstmedium resonator 101 produces is directed upwards towards its opening part from the bottom surface of thefirst cavity 10, and at another constantly, Open Side Down points to its bottom surface from thefirst cavity 10 in the magnetic field that firstmedium resonator 101 produces, that is to say, be similar to the magnetic field of the earth, just in the different moment, magnetic field exists from " south " utmost point to be pointed to " north " utmost point or points to " south " utmost point two states from " north " utmost point, and in this way, the energy in the magnetic field thatfirst medium resonator 101 produces can be absorbed by thefirst coupling part 311 well, because belonging to prior art, do not give unnecessary details.The magnetic flux of the first equivalent magnetic flux ring A is passed in the magnetic field that the present embodiment can adopt dual mode to adjust 101 generations of first medium resonator: mode one, the size of the area of the first equivalent magnetic flux ring A is adjusted in the position of adjusting thefirst coupling part 311, for example thefirst coupling part 311 is increased as far as possible the area of the first equivalent magnetic flux ring A near firstmedium resonator 101; Mode two because firstmedium resonator 101 is stronger the closer to the magnetic field intensity of the outline of the ceramic dielectric block of centre, that is to say, adjusts the distance of bottom surface of thefirst coupling part 311 tofirst cavitys 10 to adjust the size of magnetic flux.
And thesecond coupling part 312 cooperates formation the second equivalent magnetic flux ring B with the sidewall electric connection of thesecond cavity 20 and withcoupling window 30, in like manner, be similar to the galvanomagnetic effect principle of coil, at thesecond coupling part 312, the part base of the sidewall of thesecond cavity 20 andcoupling window 30 cooperates the second equivalent magnetic flux ring B that forms, the angle that the plane at the direction place in the magnetic field that the plane at its place andsecond medium resonator 201 produces becomes to be scheduled to, in this way, the energy in the magnetic field thatsecond medium resonator 201 produces just can be absorbed by thesecond coupling part 312 well, the concrete principle in the magnetic field of secondmedium resonator 201 sees also the associated description of firstmedium resonator 101, does not repeat them here.The magnetic flux of the second equivalent magnetic flux ring B is passed in the magnetic field that the present embodiment can adopt dual mode to adjust 201 generations of second medium resonator: mode one, the size of the area of the second equivalent magnetic flux ring B is adjusted in the position of adjusting thesecond coupling part 312, for example thesecond coupling part 312 is increased as far as possible the area of the second equivalent magnetic flux ring B near secondmedium resonator 201; Mode two, becausesecond medium resonator 201 is stronger the closer to the magnetic field intensity of the outline of the ceramic dielectric block of centre, that is to say, the distance of adjusting the bottom surface of thesecond coupling part 312 tosecond cavitys 20 is passed the magnetic flux of the second equivalent magnetic flux ring B with adjustment.
In addition,convergence part 313 is throughcoupling window 30, and preferably,convergence part 313 outer uncoated insulating protective layers need the interval to arrange, i.e. theconvergence part 313unsettled coupling windows 30 that run through between the sidewall ofconvergence part 313 andcoupling window 30 and the base.As previously mentioned, be not difficult to find out, corresponding with the feature of the direction in the magnetic field offirst medium resonator 101 andsecond medium resonator 201 is: the first equivalent magnetic flux ring A and the residing position of the second equivalent magnetic flux ring B lay respectively atconvergence part 313 mutually away from both sides.
Be understandable that, thefirst coupling part 311, thesecond coupling part 312 andconvergence part 313 can be one-body molded, also can be electrically connected by the mode that is spirally connected or rivet.
After the present embodiment filter was provided with above-mentionedcoupling window 30 andmale part 31, its specific works process was as follows:
When carrying out the signal transmission, the magnetic field part that the magnetic field part thatfirst medium resonator 101 produces passes the first equivalent magnetic flux ring A and 201 generations of second medium resonator passes the second equivalent magnetic flux ring B, the magnetic field of the magnetic field of firstmedium resonator 101 and energy thereof and secondmedium resonator 201 and energy thereof are coupled at first respectivelypart 31 and absorb, then be coupled bymale part 31, and the direction vector behind its magnetic Field Coupling is identical, finally realizes the reversed polarity coupling offirst medium resonator 101 andsecond medium resonator 201.
The utility model embodiment adopts the mode ofcoupling window 30 andmale part 31, solved between the resonator in prior art thefirst cavity 10 and thesecond cavity 20 problem that direct reversed polarity is coupled, furthermore, the direction in the magnetic field that produces in same time for firstmedium resonator 101 andsecond medium resonator 201 is difficult to predict the situation of judgement, the utility model embodiment makes and realizes the reversed polarity coupling betweenfirst medium resonator 101 and thesecond medium resonator 201 by the mode of the first equivalent magnetic flux ring A and the second equivalent magnetic flux ring B.The filter construction of the utility model embodiment is simple, has realized the magnetic-coupled while between the resonator, is with outer clutter inhibition better, and possesses higher Q value.
Embodiment two, and seeing also Fig. 5 is the structural representation of another embodiment of the utility model filter.
As previously mentioned, the present embodiment filter includes but not limited to thefirst cavity 40 that the interval arranges, thesecond cavity 50,coupling window 60,first medium resonator 401,second medium resonator 501 andmale part 61,male part 61 comprises thefirst coupling part 611, thesecond coupling part 612 and theconvergence part 613 that connects thefirst coupling part 611 and thesecond coupling part 612, the sidewall of thefirst coupling part 611 and thefirst cavity 40 is electrically connected to form the first equivalent magnetic flux ring C, the sidewall of thesecond coupling part 612 and thesecond cavity 50 is electrically connected to form the second equivalent magnetic flux ring D,coupling window 60 is run through inconvergence part 613, its specific works process sees also the associated description of embodiment one, in the scope that the art personnel understand, do not give unnecessary details, the present embodiment and embodiment one difference are:
Thefirst cavity 40 sidewalls are provided with the first connecting portion (not shown) that is electrically connected with thefirst coupling part 611, and thesecond cavity 50 sidewalls are provided with the second connectingportion 502 that is electrically connected with thesecond coupling part 612.
As shown in Figure 5, the first connecting portion and the second connectingportion 502 are the fixed platform of projection, it lays respectively at the different both sides ofcoupling window 60, different both sides refer near the position, any two diagonal angles of the bottom surface that is incoupling window 60, namely thefirst medium resonator 401, the both sides of the center line that secondmedium resonator 501 andcoupling window 60 threes form, so that the first equivalent magnetic flux ring C and the second equivalent magnetic flux ring D are positioned at different both sides,convergence part 613, correspondingly, thefirst coupling part 611 and thesecond coupling part 612 lay respectively at different both sides,convergence part 613, that is,male part 61 integral body are " Z " type or " S " type.Furthermore, in the present embodiment, thefirst coupling part 611, thesecond coupling part 612 andconvergence part 613 are in same plane and can be parallel with the bottom surface of thefirst cavity 40 or thesecond cavity 50, and the bottom surface of thefirst cavity 40 or thesecond cavity 50 also can be parallel with the bottom surface of coupling window 60.Certainly, in other embodiments, the first connecting portion and the second connectingportion 502 also can adopt the mode of draw-in groove, are not construed as limiting at this.
Install for convenient, also be provided with thefirst guide groove 402 that cooperates for thefirst coupling part 611 on the sidewall of thefirst cavity 40, one end of thefirst guide groove 402 is mutually concordant with the opening of thefirst cavity 40 so that thefirst coupling part 611 slips in thefirst guide groove 402 from this end, the other end is provided with the first connecting portion, with thefirst guide groove 402 cooperate thefirst coupling part 611 make its by predetermined track slide into the first connecting portion place and with the first connecting portion butt.In like manner, the sidewall of thesecond cavity 50 also is provided with thesecond guide groove 503 that cooperates for thesecond coupling part 612, one end of thesecond guide groove 503 is mutually concordant with the opening of thesecond cavity 50 so that thesecond coupling part 612 slips in thesecond guide groove 503 from this end, and the other end is provided with the second connecting portion 502.By the cooperation of thefirst guide groove 402 and thesecond guide groove 503,male part 61 can be installed in the intended manner.
When thefirst coupling part 611 ofmale part 61 with thesecond coupling part 612 enters into respectively in the cavity by thefirst guide groove 402 and thesecond guide groove 503 and respectively behind butt the first connecting portion and the second connectingportion 502, can thefirst coupling part 611 be connected with the first connecting portion by the mode that is spirally connected, rivets or weld, also can thesecond coupling part 612 be connected with the second connectingportion 502 by the mode that is spirally connected, rivets or weld.And if the first connecting portion and the second connectingportion 502 adopt the mode of draw-in groove, need produce certain deformation when then thefirst coupling part 611 and thesecond coupling part 612 are by thefirst guide groove 402 and thesecond guide groove 503, recover deformation after then entering into draw-in groove, and then can firmlymale part 61 be fixed in the cavity.
Than embodiment one, the present embodiment is by at thefirst cavity 40 and thesecond cavity 50 interior connecting portion and guide grooves of arranging, and with furthermale part 61, thereby guaranteed the magnetic coupling effect of male part 61.The filter construction of the utility model embodiment is simple, when having realized that reversed polarity is coupled between the resonator, is with outer clutter inhibition better, and possesses higher Q value.
Embodiment three, see also Fig. 6, are the structural representations of an embodiment of filter shown in Figure 5.
In concrete application, filter includes but not limited to the first cavity 71 that the interval arranges and sequentially is communicated with, the second cavity 72, the 3rd cavity 73 and the 4th cavity 74, and the first medium resonator that vertically is installed on the first cavity 71 bottoms, vertically be installed on the second medium resonator of the second cavity 72 bottoms, vertically be installed on the 3rd dielectric resonator of the 3rd cavity 73 bottoms and vertically be installed on the 4th dielectric resonator of the 4th cavity 74 bottoms, signal is successively through the first cavity 71, the second cavity 72, the 3rd cavity 73 and the 4th cavity 74 are by this first medium resonator, this second medium resonator, the 3rd dielectric resonator and the 4th dielectric resonator sequentially carry out the signal coupling transmission.
Need to prove, signal from the first cavity 71 to second cavitys 72 to the 3rd cavitys 73 again to the process of the 4th cavity 74, can also comprise and morely be similar to the transmission cavity that this " it " font arranges and be arranged at a plurality of transmission resonators in a plurality of transmission cavitys, correspondingly, the orderly delivering path of signal also sequentially transmits according to " it " shape, in the process of transmission, any two intervals arrange but are not between the transmission cavity on the orderly delivering path, between the first cavity 71 and the 4th cavity 74, by adopting coupling window and male part 81, can realize the reversed polarity coupling between the cavity.
Furthermore, because between the first cavity 71 and the 4th cavity 74, the signal transmission coupled modes of intersection dislocation have been realized by coupling window and male part 81, when the filter of the utility model embodiment is tested, can respectively form a strong inhibition point on filter response curve passband both sides, make filter larger to the inhibition degree near passband, wherein, two strong inhibition points that form at passband are the transmission zero of normal theory, therefore, the filter of the utility model embodiment possesses the outer clutter inhibition of higher band.
For example, male part 81 comprises the first coupling part 811, the second coupling part 812 and convergence part 813, input 821 and output 822, the specific works principle of male part 81 also sees also the associated description of front embodiment, and input 821 and output 822 belong to prior art, do not give unnecessary details one by one at this.
The present embodiment filter is with outer clutter inhibition better, and is possessed higher Q value in the reversed polarity coupling that realizes between the first cavity 71 and the 4th cavity 74.
Embodiment four, and seeing also Fig. 7 is the schematic flow sheet of the resonator magnetic coupling method of the utility model filter.
The present embodiment filter comprises the first cavity and the second cavity that the interval arranges and vertically is installed on the first medium resonator in this first cavity and vertically is installed on second medium resonator in this second cavity, and the resonator magnetic coupling method of this filter comprises:
Step S700 offers coupling window between this first cavity and this second cavity, so that be connected between this first cavity and this second cavity;
Step S701, male part is set, this male part comprises the first coupling part, the second coupling part and the convergence part that connects this first coupling part and this second coupling part, the sidewall of this first coupling part and this first cavity is electrically connected and forms the first equivalent magnetic flux ring, the sidewall of this second coupling part and this second cavity is electrically connected and forms the second equivalent magnetic flux ring, and this coupling window is run through in this convergence part.
In the specific works process, the magnetic field part that the magnetic field part that this first medium resonator produces passes this first equivalent magnetic flux ring and the generation of this second medium resonator passes this second equivalent magnetic flux ring, so that this first medium resonator and this second medium resonator are realized reversed polarity coupling.
In addition, the resonator magnetic coupling method of the present embodiment filter can also realize the outer clutter inhibition of higher band, its process comprises: a plurality of transmission cavitys are set and a plurality of transmission resonators are set in a plurality of transmission cavitys, the first cavity, a plurality of transmission cavity and the second cavity sequentially are communicated with; Wherein, first medium resonator, a plurality of transmission resonator and second medium resonator are sequentially to carry out the signal coupling transmission.Signal transmission coupled modes by this first cavity and the dislocation of the second cavity intersection, when the filter of the utility model embodiment is tested, can respectively form a strong inhibition point on filter response curve passband both sides, make filter larger to the inhibition degree near passband, wherein, two strong inhibition points that form at passband are the transmission zero of normal theory, and therefore, the filter of the utility model embodiment possesses the outer clutter inhibition of higher band.
Embodiment five, and the utility model embodiment also provides a kind of communication radio frequency device in addition, and this communication radio frequency device adopts above-mentioned filter, and this filter is located at the transceiver circuit part of this communication radio frequency device.This filter is used for signal is selected, and this communication radio frequency device is single multiplexer, duplexer, splitter, mixer or tower amplifier.
Its specific works process also sees also the associated description of embodiment one to embodiment four, in the scope that the art personnel understand, does not give unnecessary details.
See also Fig. 8 and be the response curve indicatrix of the filter that the utility model embodiment provides, wherein, abscissa is frequency (unit is MHz), ordinate is the amplitude (unit is dB) of response, be not difficult to find out from Fig. 8, the utility model embodiment realizes the magnetic-coupled while between the resonator, has also formed two stronger inhibition points near the position frequency values is 2320MHz and 2360MHz, namely realize the outer clutter inhibition of higher band, thereby possessed higher Q value.
Used specific case herein principle of the present utility model and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (15)
1. filter, it is characterized in that, comprise the first cavity and the second cavity that the interval arranges and vertically be installed on the first medium resonator of described the first cavity bottom and vertically be installed on the second medium resonator of described the second cavity bottom, described filter also comprises:
Coupling window is located between described the first cavity and described the second cavity so that described the first cavity and described the second cavity are communicated with;
Male part, run through described coupling window, described male part two ends are connected with described the first cavity wall, the second cavity wall respectively, and the two ends of described male part lay respectively at the both sides of the center line of described coupling window, described first medium resonator and described second medium resonator three formation, so that described first medium resonator and described second medium resonator are realized the reversed polarity coupling.
2. filter according to claim 1, it is characterized in that, described male part comprises the first coupling part, the second coupling part and the convergence part that connects described the first coupling part and described the second coupling part, the sidewall of described the first coupling part and described the first cavity is electrically connected, the sidewall of described the second coupling part and described the second cavity is electrically connected, and described coupling window is run through in described convergence part;
Wherein, the magnetic field part that produces of described first medium resonator passes the magnetic field part that the first equivalent magnetic flux ring that described male part and described the first cavity wall form and described second medium resonator produce and passes the second equivalent magnetic flux ring of described male part and the formation of described the second cavity wall.
3. filter according to claim 2, it is characterized in that, described filter also comprises a plurality of transmission cavitys and vertically is installed on the interior a plurality of transmission resonators of described a plurality of transmission cavity, described the first cavity, described a plurality of transmission cavitys and described the second cavity sequentially are communicated with, so that described first medium resonator, described a plurality of transmission resonators and described second medium resonator sequentially carry out the signal coupling transmission.
4. filter according to claim 3, it is characterized in that, described first medium resonator and described second medium resonator are the transverse electric mode ceramic dielectric resonator, the opposite direction in the magnetic field that described first medium resonator and described second medium resonator produce at one time.
5. filter according to claim 2 is characterized in that, the material of described male part is metal, and described convergence part is unsettled runs through described coupling window.
6. filter according to claim 5 is characterized in that, described the first coupling part, described the second coupling part and described convergence part are one-body molded.
7. filter according to claim 6 is characterized in that, described male part is " Z " type or " S " type.
8. filter according to claim 2 is characterized in that, described the first cavity wall is provided with the first connecting portion, and described the first coupling part is connected with described the first connecting portion; Described the second cavity wall is provided with the second connecting portion, and described the second coupling part is connected with described the second connecting portion.
9. filter according to claim 8 is characterized in that:
Described the first cavity wall also is provided with the first guide groove that cooperates for described the first coupling part, and an end of described the first guide groove is mutually concordant with the opening of described the first cavity, and the other end is provided with described the first connecting portion;
Described the second cavity wall also is provided with the second guide groove that cooperates for described the second coupling part, and an end of described the second guide groove is mutually concordant with the opening of described the second cavity, and the other end is provided with described the second connecting portion.
10. communication radio frequency device, it is characterized in that, described communication radio frequency device comprises according to claim 1～9 each described filters, described filter is located at the transceiver circuit part of described communication radio frequency device, be used for signal is selected, described communication radio frequency device is single multiplexer, duplexer, splitter, mixer or tower amplifier.
11. filter, it is characterized in that, comprise the first cavity that the interval arranges and sequentially is communicated with, the second cavity, the 3rd cavity and the 4th cavity, and the first medium resonator that vertically is installed on described the first cavity bottom, vertically be installed on the second medium resonator of described the second cavity bottom, vertically be installed on the 3rd dielectric resonator of described the 3rd cavity bottom and vertically be installed on the 4th dielectric resonator of described the 4th cavity bottom, described first medium resonator, described second medium resonator, described the 3rd dielectric resonator and described the 4th dielectric resonator are sequentially realized the signal coupling transmission, and described filter also comprises:
Coupling window is located between described the first cavity and described the 4th cavity so that described the first cavity and described the 4th cavity are communicated with;
Male part, run through described coupling window, described male part two ends are connected with described the first cavity wall, the 4th cavity wall respectively, and the two ends of described male part lay respectively at the both sides of the center line of described coupling window, described first medium resonator and described the 4th dielectric resonator three formation, so that described first medium resonator and described the 4th dielectric resonator are realized the reversed polarity coupling.
12. filter according to claim 11, it is characterized in that, described male part comprises the first coupling part, the second coupling part and the convergence part that connects described the first coupling part and described the second coupling part, the sidewall of described the first coupling part and described the first cavity is electrically connected, the sidewall of described the second coupling part and described the 4th cavity is electrically connected, and described coupling window is run through in described convergence part;
Wherein, the magnetic field part that produces of described first medium resonator passes the magnetic field part that the first equivalent magnetic flux ring that described male part and described the first cavity wall form and described the 4th dielectric resonator produce and passes the second equivalent magnetic flux ring of described male part and the formation of described the 4th cavity wall.
13. filter according to claim 12, it is characterized in that, described first medium resonator and described the 4th dielectric resonator are the transverse electric mode ceramic dielectric resonator, the opposite direction in the magnetic field that described first medium resonator and described the 4th dielectric resonator produce at one time.
14. filter according to claim 12 is characterized in that, described the first coupling part, described the second coupling part and described convergence part are one-body molded.
15. communication radio frequency device, it is characterized in that, described communication radio frequency device comprises according to claim 11～14 each described filters, described filter is located at the transceiver circuit part of described communication radio frequency device, be used for signal is selected, described communication radio frequency device is single multiplexer, duplexer, splitter, mixer or tower amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220287485CN202888358U (en) | 2012-06-18 | 2012-06-18 | Communication radio frequency device and filter of the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220287485CN202888358U (en) | 2012-06-18 | 2012-06-18 | Communication radio frequency device and filter of the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202888358Utrue CN202888358U (en) | 2013-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220287485Withdrawn - After IssueCN202888358U (en) | 2012-06-18 | 2012-06-18 | Communication radio frequency device and filter of the same |
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| Country | Link |
|---|---|
| CN (1) | CN202888358U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103515678A (en)* | 2012-06-18 | 2014-01-15 | 深圳市大富科技股份有限公司 | A communication radio frequency device and a filter thereof |
| CN105356019A (en)* | 2015-11-25 | 2016-02-24 | 宁波泰立电子科技有限公司 | Filter with stray coupling elimination structure |
| WO2020135514A1 (en)* | 2018-12-29 | 2020-07-02 | 华为技术有限公司 | Filter and base station |
| CN112421194A (en)* | 2020-11-03 | 2021-02-26 | 摩比天线技术（深圳）有限公司 | Low-pass filter |
- 2012
- 2012-06-18CNCN 201220287485patent/CN202888358U/ennot_activeWithdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103515678A (en)* | 2012-06-18 | 2014-01-15 | 深圳市大富科技股份有限公司 | A communication radio frequency device and a filter thereof |
| CN103515678B (en)* | 2012-06-18 | 2015-07-08 | 深圳市大富科技股份有限公司 | A communication radio frequency device and a filter thereof |
| CN105356019A (en)* | 2015-11-25 | 2016-02-24 | 宁波泰立电子科技有限公司 | Filter with stray coupling elimination structure |
| WO2020135514A1 (en)* | 2018-12-29 | 2020-07-02 | 华为技术有限公司 | Filter and base station |
| CN112421194A (en)* | 2020-11-03 | 2021-02-26 | 摩比天线技术（深圳）有限公司 | Low-pass filter |
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