CN101895008B - Miniature antenna - Google Patents

Abstract

The invention discloses a micro antenna, a conductive first electrode layer is arranged on a first surface of a substrate made of microwave material, a conductive second electrode layer is arranged on a second surface opposite to the first surface, interlayer space is formed by utilizing a mode that the first electrode layer and the second electrode layer are partially overlapped correspondingly to generate required capacitance, the first electrode layer is connected with a signal feed-in wire, and the second electrode layer is connected with a grounding wire, so that the antenna body can provide a signal transceiving function. When the thickness and size of the substrate are changed or the overlapping area of the two electrode layers is changed, the antenna can be realized to be a small size, the resonance frequency can be changed by adjusting the capacitance, and the antenna has a simple structure and good signal receiving and transmitting efficiency.

Description

Miniature antenna

Technical field

The present invention is relevant a kind of antenna structure, particularly relevant a kind of miniature antenna structure that is used on the radio communication product.

Background technology

Being indebted to the wireless communication technique progress concerns fast, mobile phone, WLAN (WLAN) and satellite navigation individualized action electronic products such as (GPS) are also flourish, and vast market competition and consumption end are to higher-quality pursuit, make the action electronic product except that the electrical characteristic of standard, more be conceived to pursue design creative in the moulding.Relatively,, change embedded type gradually into and hide design also by the design of otherwise exposed formula as the antenna of receiving/send out the signal important document.Yet, the antenna in the inner small space of casing of hiding oneself for moulding, its purpose still is good and signal clearly in the sub-product transmitting-receiving of power supply.Again, the common person of concealed antenna is two kinds of unipole antenna (Monopole) and PIFA (planar Inverted F Antenna).Monopole antenna structure is simple, low price, but because of the restriction of antenna efficiency problem, antenna length can't reduce effectively, and therefore, device seems more not attractive in appearance when installing body in action, and the market use amount reduces gradually.In addition, the PIFA antenna is called planar inverted F-shape antenna again, and it can be hidden in the running gear internal body, and changes dull and stereotyped how much external forms with fuselage, and the emitting structural broad, have bigger operation frequency range, so the application on the market is also comparatively extensive.Yet, no matter be that unipole antenna or PIFA antenna all are a kind of electric field antenna, be subjected to the influence that the dielectric material in the near field produces reactive effect easily, cause the frequency coordination misalignment, just, all assemblies near antenna all might influence antenna, have reduced an antenna receipts/signal efficient, make antenna noise raise.

Therefore, at the problems referred to above, the present invention proposes a kind of miniature antenna, and it has the characteristic that volume is little and limit to the electric current channelling simultaneously, in order to improve the disappearance of prior art.

Summary of the invention

Main purpose of the present invention provides a kind of miniature antenna, and its design principle is to utilize the overlapping region of electrode layer to form the mezzanine space with series capacitor effect, further promotes antenna capacity, and antenna volume is contracted to littler.

Secondary objective of the present invention is that a kind of miniature antenna is being provided, and it utilizes the size that changes electrode layer overlapping region mode control capacitance amount, revises resonance frequency easily.

Another purpose of the present invention is that a kind of miniature antenna is being provided, and its volume is little, simple in structure, and the mobile periphery that is confined to antenna of electric current effectively can be avoided the interference phenomenon that produces between antenna and near dielectric.

For reaching above-mentioned purpose, the present invention discloses a kind of miniature antenna, comprise at least one matrix, at least one first electrode layer and at least one the second electrode lay, and matrix is to make with microwave material, has a relative first surface and a second surface, is provided with respectively for this first electrode layer and this second electrode lay, again, this two electrode layer has conductivity, and first electrode layer is for connecting a signal feed-in line, and the second electrode lay is for connecting an earth connection.This two electrode layer is partly corresponding overlapping, and on matrix, form mezzanine space, and then can further reduce antenna size and volume with electric capacity effect, and the signal interference problem that can avoid the induced current channelling of known antenna to be caused.

In addition, the present invention can be applied in the multifrequency signal and receive, that is, a plurality of matrixes are set, on a bearing substrate with respect to each matrix, build respectively and put foregoing first electrode layer and the second electrode lay, so can build and put a plurality of miniature antennas, adjust the shape and the design of each antenna in the bearing substrate last time of a small size, or the dielectric constant of matrix, its resonance frequency can be changed, the purpose of multifrequency signal receiving/transmission can be reached.

Beneath by the appended graphic explanation in detail of specific embodiment cooperation, when the effect that is easier to understand purpose of the present invention, technology contents, characteristics and is reached.

Description of drawings

Fig. 1 is the schematic perspective view of one embodiment of the invention.

Fig. 2 is the antenna applications schematic diagram of Fig. 1.

Fig. 3 is the antenna Another Application schematic diagram of Fig. 1.

Fig. 4 is that the antenna of Fig. 1 one is used schematic diagram again.

Fig. 5 (a) figure is that antenna of the present invention adopts the thick film processing procedure that the schematic diagram of the second electrode lay is set on a bearing substrate.

Fig. 5 (b) figure is that hookup 5 (a) figure adopts the thick film processing procedure that the schematic diagram of matrix is set on the second electrode lay.

Fig. 5 (c) figure is that hookup 5 (b) figure adopts the thick film processing procedure that the schematic diagram of first electrode layer is set on bearing substrate and matrix.

Fig. 5 (d) figure is the end face end view that hookup 5 (c) figure shows finished product.

Another implements the stereogram of aspect to Fig. 6 for the present invention.

Fig. 7 is the schematic diagram of another enforcement aspect of miniature antenna of the present invention.

Fig. 8 (a) figure is the top view of an enforcement aspect of the present invention.

Fig. 8 (b) figure is continuity Fig. 8 (a) figure, shows the bottom view of this miniature antenna.

Fig. 9 (a) figure is continuity Fig. 8 (a) figure and Fig. 8 (b) figure, shows the schematic perspective view when this miniature antenna is incorporated into a wiring board.

Fig. 9 (b) figure is continuity Fig. 8 (a) figure and Fig. 8 (b) figure, is the schematic bottom view of expression the second electrode lay and wiring board bonding state.

Among the figure:

10 matrixes

11 first surfaces, 12 second surfaces

20,20 'first electrode layer 21,21 ' first termination electrode

30,30 ' the second electrode lay 31,31 ' second termination electrode

40 bearing substrates

41 termination electrodes, 42 termination electrodes

50 wiring boards

51,51 ' signal feed-inline 52,52 ' earth connection

53 earth connections

Embodiment

The present invention utilizes microwave material to be easy to generate the characteristic of capacity effect, makes a miniature antenna, effectively reduces antenna size and volume, and electric current is confined to arround the antenna interference of avoiding induced current channelling in the circuit board to be caused.Thus, can guarantee the service efficiency of miniature antenna.And miniature antenna of the present invention, utilize two conductive electrode layers to be arranged on the mode on relative two surfaces of matrix,, form interlayer at matrix with capacitor effect with the overlapped part of electrode layer, more can further promote the capacitance of antenna, antenna volume can be contracted to littler.

Fig. 1 is the wherein schematic perspective view of an enforcement aspect of the present invention, as shown in the figure, a kind of miniature antenna, it includes amatrix 10, onefirst electrode layer 20 and a second electrode lay 30.Thismatrix 10 is to adopt the microwave material manufacturing, to produce required capacitance.This microwave material can be the composite of pottery, glass, magnetic material, macromolecular material or above material combination.And thismatrix 10 is microscler cube, so have a relativefirst surface 11 and a second surface 12.In addition,first electrode layer 20 and thesecond electrode lay 30 are to make with the metal with conductivity, as gold, silver, copper etc., or the nonmetallic materials of other tool conductivity, this twoelectrode 20,30 is separately positioned onmatrix 10first surfaces 11 and thesecond surface 12, and 20,30 of electrode layers have overlapping areas.Utilize upper/lower electrode 20,30 laps to produce zone and increase capacitance with capacitor function.Moreover two electrode layers, 20,30 relative outer ends extend to respectively onmatrix 10 1 end faces, andfirst electrode layer 20 forms onefirst termination electrode 21 in this end, and the second electrode lay 30 forms onesecond termination electrode 31 in this end.Thus, when this miniature antenna combines with awiring board 50, just as shown in Figure 2,first termination electrode 21 offirst electrode layer 20 can be connected with the signal feed-inline 51 ofwiring board 50,second termination electrode 31 of thesecond electrode lay 30 can be connected with theearth connection 52 ofwiring board 50, thereby has the signal receiving/transmission effect.And in the practical application, thetermination electrode 21,31 of twoelectrode layers 20,30 is provided with the position, then based on the actual demand of the electronic installation that takes concerted action.But if represented, make thetermination electrode 21 offirst electrode layer 20, except the signal feed-inline 51 ofconnection line plate 50 as previously described, also be connected to anearth connection 53 ofwiring board 50 simultaneously, more can reduce antenna resonance frequency as Fig. 3.Fig. 4 then is this miniature antenna and the schematic diagram of the different combinations of wiring board.First electrode layer 20 also is viafirst termination electrode 21, connects feed-inline 51 andearth connection 53; The second electrode lay 30 then viasecond termination electrode 31, is connected with theearth connection 52 of wiring board 50.Although as Fig. 4, change direction that this miniature antenna is arranged onwiring board 50 receiving signal, but it does not still break away from main spirit of the invention process, also belongs to of the invention process a kind of.

In addition, miniature antenna of the present invention has the multiple means that achieve the goal with prior art.So the finished product of the equal benefit of analog structure tool ought to all be regarded equivalence of the present invention as and implement.For example, Fig. 5 (a) figure to Fig. 5 (d) figure is the processing procedure explanation of adopting the thick film process technique.Scheme with reference to figure 5 (a) earlier, be on the upper surface of abearing substrate 40, make a plurality of the second electrode lays 30 with the thick film process technique, these bearingsubstrate 40 compositions can be the composite materials of pottery, glass, magnetic material, macromolecular material or above material.Scheme with reference to figure 5 (b) again, dielectric material is formedmatrix 10 with the thick film process technique on the second electrode lay 30 and bearingsubstrate 40, continue, consult Fig. 5 (c) figure, use the thick film process technique on bearingsubstrate 40 andmatrix 10, to makefirst electrode layer 20 once more, the antenna profile of processing procedure production just shows as Fig. 5 (d) figure according to this, builds first electrode layer, 20 parts and the second electrode lay 30 parts of putting in eachmatrix 10 upper and lower surfaces and forms relative overlapping regions.The manufacture method of its processing procedure is simply easy, and can simultaneously a plurality of antenna bodies be produced on simultaneously abearing substrate 40 surfaces.After cutting, can be in the othermanufacturing terminal electrode 41,42 of the two side faces ofbearing substrate 40, convenient antenna is connected withearth connection 52 with signal feed-inline 51 on the wiring board 50.Certainly execution mode does not exceed with above-mentioned, and matrix and two electrode layers also can utilize sputter, or thin film manufacture process technology such as evaporation is made.Or, method is sticked together in the thin slice utilization of dielectric material and electric conducting material, paste surface in regular turn atbearing substrate 40, put the antenna structure that shows as Fig. 5 (d) figure to build, or mix utilization film, thick film, and adhesion process build and put antenna structure, all being the production method that can change enforcement, also is a kind of method of simple and easy enforcement.

Moreover antenna of the present invention varies in size according to capacitance, can revise resonance frequency easily, also we can say, see through to change the shape of antenna and design ormatrix 10 dielectric constants and can receive different frequency.With reference to Fig. 6, be that the part zone with twoelectrode layers 20,30 is made into tortuous wire, in order to do the length that prolongsantenna electrode layer 20,30, promptly can see through the length of antenna conductor or the variation of capacitance change the antenna receiving-sending frequency.Cooperate above-mentioned process technique according to aforementioned principles again, cooperate Fig. 7 again, the present invention not only can manufacture the arranged antenna simultaneously in a large number on bearingsubstrate 40, and according to the demand on actual the use, when using as the single-frequency signal, can a plurality of miniature antennas of putting will be built simultaneously on thebearing substrate 40, cut into the miniature antenna (similar Fig. 5 (d) figure) that most single single-frequency are used, or a plurality of combination of antennas (the enforcement aspect shown in similar Fig. 5 (c) figure) on abearing substrate 40, via the shape that changes respective antenna and the dielectric constant of design ormatrix 10, can on abearing substrate 40, obtain the integrated antenna body of a plurality of different frequencies, in order to do being applied in the electronic installation that needs transmitting-receiving multifrequency signal.

Illustrate that again the inventor uses one of above-mentioned principle institute actual fabrication to have the combined type Miniature Aerial Structure of two resonance frequencys.With reference to Fig. 8 (a) figure and Fig. 8 (b) figure, this miniature antenna comprises amatrix 10, and on thefirst surface 11 of itsmatrix 10, make twofirst electrode layers 20,20 ', on thesecond surface 12 of itsmatrix 10, make two the second electrode lays 30,30 ', this 2first electrode layer 20,20 ' two the second electrode lays 30 therewith, between 30 ', the zone that overlaps respectively, utilize that lap produces the zone with capacitor function and increases capacitance between upper/lower electrode 20 and 20 ' and 30 and 30 ', the size of adjusting the individual electrode layer with and the size of overlapping region, can produce combined type miniature antenna with two resonance frequencys.Again, this 2first electrode layer 20,20 ' and extend each self-forming onefirst termination electrode 21,21 ' towards the end face ofmatrix 10 respectively; Cooperate Fig. 9 (a) figure and Fig. 9 (b) figure, when this miniature antenna combines withwiring board 50 again, also mode as described above, make this 2first termination electrode 21,21 ' be connected with two feed-inlines 51,51 ' and twoearth connections 52,52 ' ofwiring board 50 respectively, this two the second electrode lay 30,30 ' is then connected wires with another ofwiring board 50 and 53 is connected, when making this combined type miniature antenna be applied in two different frequency ranges.Present embodiment is with two frequency ranges example as an illustration, according to the principle of this patent, makes the combined antenna that surpasses more than two frequency ranges, still belongs to the scope of this patent certainly.In sum, the advantage of miniature antenna of the present invention is to utilize microwave material to make matrix, produces capacitance by its physical characteristic, and the channelling phenomenon of limitation electric current, improves the current loss that reactive effect causes near field effectively.Secondly, the electrode layer overlapping region more forms a series capacitance, make this kind Antenna Design significantly reduced volume but still have good signal receiving/transmission ability.Moreover, see through to change first electrode layer and the second electrode lay and form the size in interlayer zone in matrix, for example change matrix thickness size, electrode layer overlapping region size, perhaps mode such as electrode layer shape promptly can be adjusted capacitance change antenna resonance frequency easily.Again, this antenna is except characteristic simple in structure, and little with volume simultaneously, every advantages such as cost is low, service efficiency is high, convenient a large amount of productions.

The above is by embodiment characteristics of the present invention to be described, its purpose makes the personnel that have the knack of this technology, can understand content of the present invention and enforcement according to this, and non-limiting claim of the present invention.So other does not break away from disclosed spirit, and the same equivalence of finishing is modified or is revised, and must be included in the claim of the present invention.

Claims (8)

Translated fromChinese

1.一种微型天线，其是连接至少一讯号馈入线及至少一接地线，以收发讯号，该微型天线包括：1. A miniature antenna, which is connected to at least one signal feed-in line and at least one ground wire to send and receive signals, the miniature antenna includes:至少一微波材质的基体，其是具有相对的第一表面及第二表面；at least one substrate of microwave material, which has opposite first surface and second surface;至少一具导电性的第一电极层，其设在该基体的第一表面，该第一电极层是供连接该讯号馈入线，其中该第一电极层具有一第一端电极，该讯号馈入线是连接该第一端电极；以及At least one conductive first electrode layer is provided on the first surface of the substrate, the first electrode layer is used for connecting the signal feed-in line, wherein the first electrode layer has a first terminal electrode, the signal The feeding line is connected to the first end electrode; and至少一具导电性的第二电极层，其设在该基体的第二表面，该第二电极层是供连接该接地线，且该第二电极层与该第一电极层具有部份对应重叠，其中该第二电极层具有一第二端电极，该接地线是连接该第二端电极；At least one conductive second electrode layer is provided on the second surface of the substrate, the second electrode layer is used for connecting the ground wire, and the second electrode layer and the first electrode layer have a corresponding partial overlap , wherein the second electrode layer has a second terminal electrode, and the grounding line is connected to the second terminal electrode;其中该第一端电极除连接该讯号馈入线外，也同时连接该接地线。Wherein the first terminal electrode is not only connected with the signal feed-in line, but also connected with the ground line at the same time.2.根据权利要求第1项所述的微型天线，其特征在于：其中该基体的材质是为陶瓷材料，或玻璃材料，或磁性材料，或高分子材料，或以上材质的复合材料；该第一电极层以及该第二电极层是为具有导电性的金属电极层，或具导电性的非金属电极层。2. The miniature antenna according to claim 1, characterized in that: wherein the material of the substrate is a ceramic material, or a glass material, or a magnetic material, or a polymer material, or a composite material of the above materials; The first electrode layer and the second electrode layer are conductive metal electrode layers or conductive non-metal electrode layers.3.根据权利要求第1项所述的微型天线，其特征在于：其中该第一电极层及该第二电极层，是以厚膜制程，或薄膜制程，或贴着导电薄片的方式，分别设置在该基体的该第一表面及该第二表面。3. The micro-antenna according to claim 1, wherein the first electrode layer and the second electrode layer are made of thick film process, or thin film process, or attached to a conductive sheet, respectively. It is arranged on the first surface and the second surface of the substrate.4.一种微型天线，其是连接至少一讯号馈入线及至少一接地线，以收发讯号，该微型天线包括：4. A miniature antenna, which is connected to at least one signal feed-in line and at least one grounding line to send and receive signals, and the miniature antenna includes:至少一微波材质的基体，其是具有相对的第一表面及第二表面；at least one substrate of microwave material, which has opposite first surface and second surface;至少一具导电性的第一电极层，其设在该基体的第一表面，该第一电极层是供连接该讯号馈入线；At least one conductive first electrode layer is provided on the first surface of the substrate, and the first electrode layer is used for connecting the signal feed-in line;至少一具导电性的第二电极层，其设在该基体的第二表面，该第二电极层是供连接该接地线，且该第二电极层与该第一电极层具有部份对应重叠；以及At least one conductive second electrode layer is provided on the second surface of the substrate, the second electrode layer is used for connecting the ground wire, and the second electrode layer and the first electrode layer have a corresponding partial overlap ;as well as一承载基板，其具有二端电极；该第二电极层是以厚膜制程，或薄膜制程，或黏着导电薄片的方式，设在该承载基板上表面，其该第二电极层并连接该承载基板其一该端电极；该基体以厚膜制程，或薄膜制程，或贴着介电薄片的方式，设置在该第二电极层及该承载基板上；该第一电极层，再以厚膜制程，或薄膜制程，或贴着导电薄片的方式，设置在该承载基板及该基体的该第一表面，且该第一电极层，连接该承载基板的另一该端电极。A carrier substrate, which has two terminal electrodes; the second electrode layer is set on the upper surface of the carrier substrate by thick film process, thin film process, or adhesive conductive sheet, and the second electrode layer is connected to the carrier One of the substrates is the terminal electrode; the substrate is arranged on the second electrode layer and the carrier substrate by a thick film process, or a thin film process, or by attaching a dielectric sheet; the first electrode layer is further formed by a thick film A process, or a thin film process, or a method of sticking a conductive sheet, is disposed on the carrier substrate and the first surface of the base body, and the first electrode layer is connected to the other terminal electrode of the carrier substrate.5.一种微型天线，其特征在于：其是连接至少一讯号馈入线及至少一接地线，以收发讯号，该微型天线包括：5. A miniature antenna, characterized in that: it is connected to at least one signal feed-in line and at least one ground wire to send and receive signals, and the miniature antenna includes:一承载基板；a carrier substrate;复数具导电性的第二电极层，设置在该承载基板上，该第二电极层是供连接该接地线；A plurality of conductive second electrode layers are arranged on the carrier substrate, and the second electrode layers are used for connecting to the ground wire;复数微波材质的基体，每一该基体具有相对的一第一表面以及一第二表面，各该基体以其該第二表面设置在一该第二电极层及该承载基板上；以及A plurality of substrates made of microwave materials, each of which has an opposite first surface and a second surface, each of which is disposed on a second electrode layer and the carrier substrate with its second surface; and复数具导电性的第一电极层，分别设置在一该基体的该第一表面及该承载基板上，各该第一电极层与相对该第二电极层部份对应重叠，且该第一电极层并供连接一该讯号馈入线。A plurality of conductive first electrode layers are respectively arranged on the first surface of the substrate and the carrier substrate, each of the first electrode layers overlaps with the corresponding second electrode layer, and the first electrode Layer and for connecting a signal feed-in line.6.根据权利要求第5项所述的微型天线，其特征在于：其中各该第一电极层具有一第一端电极，各该第一端电极是与一该讯号馈入线连接，或与一该讯号馈入线及一该接地线连接；各该第二电极层具有一第二端电极，是供连接一该接地线。6. The miniature antenna according to claim 5, wherein each of the first electrode layers has a first terminal electrode, and each of the first terminal electrodes is connected to a signal feed-in line, or connected to A signal feed-in line is connected to a ground line; each of the second electrode layers has a second terminal electrode for connecting to the ground line.7.根据权利要求第5项所述的微型天线，其特征在于：其中该承载基板的材质是陶瓷，或玻璃，或磁性材料，或高分子材料，或以上材质的复合材料；该基体的材质是陶瓷，或玻璃，或磁性材料，或高分子材料，或以上材质的复合材料；该第一电极层以及该第二电极层的材质，是以具有导电性的金属材料，或是其它具导电性的非金属材料制成。7. The miniature antenna according to claim 5, wherein the material of the carrier substrate is ceramics, or glass, or a magnetic material, or a polymer material, or a composite material of the above materials; the material of the substrate It is ceramic, or glass, or magnetic material, or polymer material, or a composite material of the above materials; the material of the first electrode layer and the second electrode layer is a conductive metal material, or other conductive Made of durable non-metallic materials.8.根据权利要求第5项所述的微型天线，其特征在于：其中该第一电极层，是采用厚膜制程，或薄膜制程，或黏着法，分别形成于该基体以及该承载基板上表面；该第二电极层，是采用厚膜制程，或薄膜制程，或黏着法，分别形成于该承载基板上表面；而该基体采用厚膜制程，或薄膜制程，或黏着法，分别形成于该第二电极层及该承载基板的上表面。8. The miniature antenna according to claim 5, wherein the first electrode layer is formed on the base body and the upper surface of the carrier substrate respectively by thick film process, thin film process, or adhesion method The second electrode layer is formed on the upper surface of the carrier substrate by a thick film process, or a thin film process, or an adhesion method; The second electrode layer and the upper surface of the carrier substrate.

Images