CN112635982B - Short-circuit coplanar waveguide-fed dual-polarized broadband antenna - Google Patents
Short-circuit coplanar waveguide-fed dual-polarized broadband antennaDownload PDFInfo
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- CN112635982B CN112635982BCN201910955715.5ACN201910955715ACN112635982BCN 112635982 BCN112635982 BCN 112635982BCN 201910955715 ACN201910955715 ACN 201910955715ACN 112635982 BCN112635982 BCN 112635982B
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- circuit board
- printed circuit
- coplanar waveguide
- ground plane
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- 239000002184metalSubstances0.000claimsdescription12
- 230000005855radiationEffects0.000claimsdescription12
- 238000003491arrayMethods0.000claimsdescription8
- 230000009977dual effectEffects0.000claims10
- 238000010586diagramMethods0.000description26
- 238000005452bendingMethods0.000description1
- 238000004891communicationMethods0.000description1
- 239000004020conductorSubstances0.000description1
- 238000005516engineering processMethods0.000description1
- 238000012986modificationMethods0.000description1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/10—Resonant antennas
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
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Abstract
Description
Technical Field
The invention provides a short-circuit coplanar waveguide feed-in dual-polarized broadband antenna, in particular to a dual-polarized efficiency antenna for creating multi-frequency and broadband. And, using a simplified architecture to form an array antenna with a wide operating band.
Background
Wireless communication technology is an indispensable link in the current society and convenience life, and there is a comprehensive layout of wired and wireless local area networks, and Mobile electronic devices (Mobile devices) must also be equipped with corresponding wireless antennas for receiving and transmitting signals, and can use the internet and transmit data through the wireless local area networks.
The wireless antenna of the mobile electronic device usually belongs to a single body or is integrated with other antennas with different functions, and the size of the wireless antenna is usually large and bulky, which affects the circuit layout of the mobile electronic device. On the other hand, the operation bandwidth of the wireless antenna is required to be designed towards multi-band and broadband frequency bands, and how to provide a more ideal multi-band and broadband antenna becomes an urgent target for those skilled in the art without occupying too much space inside the mobile electronic device.
Disclosure of Invention
The invention is a short-circuit coplanar waveguide feed-in dual-polarized broadband antenna, mainly aiming at providing a printed circuit board which is provided with a first surface and a second surface; the first surface of the printed circuit board is provided with a signal line, the second surface of the printed circuit board is provided with a ground plane, the printed circuit board is internally provided with a conduction body so as to enable the signal line and the ground plane to be electrically connected, the ground plane surrounds the signal line to form a coplanar waveguide-fed monopole antenna and has the characteristic of a dipole antenna, and the dual-polarized antenna with multiple frequencies and broadband is achieved by the structure. And, using the simple structure to form the array antenna with wide operation frequency band.
The secondary objective of the present invention is that the signal line has a long rectangular appearance, and the top end of the signal line is further provided with an extension portion, the extension portion forms a part of the signal line, so as to achieve the efficiency of multi-frequency dual-polarization radiation and increase the resonance bandwidth of the antenna.
Another objective of the present invention is that the appearance of the ground plane is "U" shaped, and the ground plane has a first horizontal radiating portion, a bent radiating portion and a second horizontal radiating portion, wherein the first horizontal radiating portion and the second horizontal radiating portion are symmetrical or asymmetrical, and the turns of the bent radiating portion form a groove area, and the area of the groove area is equal to the area of the second surface projected by the signal line of the first surface of the printed circuit board.
In order to achieve the above object, the present invention provides a short-circuited coplanar waveguide-fed dual-polarized broadband antenna, comprising:
a printed circuit board having a first surface and a second surface; and
the first surface of the printed circuit board is provided with the signal line, the second surface of the printed circuit board is provided with the ground plane, the printed circuit board is internally provided with a conduction body so as to enable the signal line and the ground plane to be electrically connected, and the ground plane surrounds the signal line to form a coplanar waveguide-fed monopole antenna and has the characteristic of a dipole antenna.
In an embodiment of the present invention, the signal line is rectangular in shape, and an extension portion is further disposed at a top end of the signal line, and a signal feed point is disposed at a bottom end of the signal line, and the extension portion forms a portion of the signal line, so as to achieve the effects of multi-frequency dual-polarization radiation and increase a resonance bandwidth of the antenna.
In an embodiment of the present invention, the ground plane has a "U" shape and has a first horizontal radiating portion, a bent radiating portion and a second horizontal radiating portion, the first horizontal radiating portion and the second horizontal radiating portion are symmetric structures or asymmetric structures, and the bent radiating portion has a turn surrounding a groove area, and the area of the groove area is equal to the area of the second surface projected by the signal line of the first surface of the printed circuit board.
In an embodiment of the present invention, the length of the signal line is a quarter wavelength of the center frequency.
In an embodiment of the present invention, the length and width of the ground plane are a quarter wavelength of the center frequency.
In an embodiment of the present invention, the signal lines are even number arrays of signal lines, and the ground plane is also set as an even number array of ground planes corresponding to the even number arrays of signal lines, so that the short-circuited coplanar waveguide feeds into the dual-polarized broadband antenna to form an array antenna.
In an embodiment of the invention, a metal plate is disposed on the second surface of the printed circuit board at a predetermined distance, and the metal plate is electrically connected to a predetermined position of the ground plane, so that the short-circuited coplanar waveguide is fed into the dual-polarized broadband antenna to form a directional antenna.
In an embodiment of the present invention, the short-circuited coplanar waveguide feeds the dual-polarized broadband antenna with a low frequency operating band of 2450MHz to 2500MHz and a high frequency operating band of 5150MHz to 5800MHz.
In an embodiment of the invention, the conductive body in the printed circuit board is formed by a via hole or a metal rod.
Drawings
Fig. 1 is a structural diagram of a printed circuit board of the antenna of the present invention having a signal line on a first surface thereof.
Fig. 2 is a structural diagram of the second side of the printed circuit board of the antenna of the present invention having a ground plane.
Fig. 3 is an impedance matching diagram of the antenna of the present invention.
Fig. 4 is a diagram of current distribution and radiation pattern of the signal line of the printed circuit board of the antenna of the present invention.
Fig. 5 is a diagram of current distribution and radiation pattern of the ground plane of the printed circuit board of the antenna of the present invention.
Fig. 6A is a structural diagram of the antenna of the present invention with a single signal line on the first side of the printed circuit board.
Fig. 6B is a structural diagram of the antenna of the present invention having a single ground plane on the second side of the printed circuit board.
Fig. 6C is an impedance matching diagram of fig. 6A and 6B.
Fig. 7A is a structural diagram of the printed circuit board of the antenna of the present invention having an even number of signal lines on the first side.
Fig. 7B is a structural diagram of the antenna of the present invention having an even number of ground planes on the second side of the printed circuit board.
Fig. 7C is an impedance matching diagram of fig. 7A and 7B.
Fig. 8 is a structural diagram of a metal plate disposed on the second surface of the printed circuit board of the antenna of the present invention.
1-short-circuit coplanar waveguide feed dual-polarized broadband antenna; 11-a printed circuit board; 12-a signal line; 121-an extension; 122-signal feed point; 13-a ground plane; 130-a groove region; 131-a first horizontal radiating section; 132-bending the radiating part; 133-a second horizontal radiating section; 14-a via; 21-single signal line; 22-single ground plane; 31-an even array of signal lines; 32-ground region of even array; 4-a metal plate; l1-signal line length; l2-ground plane length; w2-ground plane width.
Detailed Description
To achieve the above objects and advantages, the present invention provides a technical solution and a structure thereof, wherein the structure and function of a preferred embodiment of the present invention are described in detail as follows.
Referring to fig. 1, 2 and 3, which are a structural diagram of a printed circuit board having a signal line on a first surface thereof, a structural diagram of a ground plane on a second surface thereof, and an impedance matching diagram, it can be clearly seen from the diagrams that the short-circuit coplanar waveguide fed dual-polarized broadband antenna 1 of the present invention includes a printedcircuit board 11, asignal line 12, aground plane 13, and aconductor 14, and the following components are explained in more detail:
the printedcircuit board 11 has a first surface and a second surface.
Thesignal line 12 and theground plane 13 are disposed on the first surface of the printedcircuit board 11, theground plane 13 is disposed on the second surface of the printedcircuit board 11, aconductive body 14 is disposed in the printedcircuit board 11 to electrically connect thesignal line 12 and theground plane 13, and theground plane 13 surrounds thesignal line 12 to form a coplanar waveguide-fed monopole antenna with dipole antenna characteristics. The low-frequency operation frequency band of the short-circuit coplanar waveguide feed-in dual-polarized broadband antenna is 2450 MHz-2500 MHz, and the high-frequency operation frequency band thereof is 5150 MHz-5800 MHz. Theconductive body 14 in the printedcircuit board 11 is formed by a through hole or a metal rod.
The 3D radiation efficiency table of the short-circuited coplanar waveguide-fed dual-polarizedbroadband antenna 1 of the present invention is as follows:
the appearance of thesignal line 12 is rectangular, and the top end of thesignal line 12 is further provided with anextension portion 121, and the bottom end of thesignal line 12 is provided with a signal feed-inpoint 122, and theextension portion 121 forms a part of thesignal line 12, so as to form the efficiency of multi-frequency dual-polarization radiation and increase the resonance bandwidth of the antenna. The signal line length L1 is a quarter wavelength of the center frequency (or low frequency operating band).
The appearance of theground plane 13 is in the shape of "U", and theground plane 13 has a first horizontalradiating portion 131, a bent radiatingportion 132 and a second horizontalradiating portion 133, the first horizontalradiating portion 131 and the second horizontalradiating portion 133 are symmetrical structures or asymmetrical structures, and the bent radiatingportion 132 is surrounded by agroove region 130, and the area of thegroove region 130 is equal to the area of the signal line projected to the second surface of the first surface of the printedcircuit board 11. The ground plane length L2 and the ground plane width W2 are a quarter wavelength of the center frequency (or low frequency operating band).
Fig. 4 and 5 show a current distribution and radiation pattern of signal lines and a current distribution and radiation pattern of a ground plane of a printed circuit board of the antenna according to the present invention, wherein fig. 4 discloses a current distribution and radiation pattern of a monopole antenna formed bysignal lines 12 on a printedcircuit board 11. Meanwhile, thesignal line 12 and theground plane 13 are electrically connected by the conductive via 14 in the printedcircuit board 11, and the fifth figure shows that theground plane 13 forms a part of an antenna radiator having the current distribution and radiation pattern of a dipole antenna, so that the performance of multi-frequency dual-polarized radiation and the resonance bandwidth of the antenna can be improved.
Fig. 6A to 6C are diagrams showing a structure diagram of a single signal line on a first side of a printed circuit board, a structure diagram of a single ground plane on a second side of the printed circuit board, and an impedance matching diagram of the antenna of the present invention, wherein fig. 6A discloses asingle signal line 21 on a first side of a printedcircuit board 11 feeding a short-circuit coplanar waveguide into a dual-polarizedbroadband antenna 1; in addition, fig. 6B discloses that the second surface of the printedcircuit board 11 is provided with asingle ground plane 22, and it can be understood from the disclosure of the figure that the area of the left horizontal radiating portion of thesingle ground plane 22 of the present embodiment is larger than that of the right horizontal radiating portion, so as to adjust the impedance matching between the antenna operating frequency band and the resonant frequency band, although those skilled in the art can design the area of the left horizontal radiating portion to be smaller than or equal to that of the right horizontal radiating portion, the same function and purpose can be achieved, and it should be within the protection scope of the present invention that the antenna impedance diagram formed by thesingle signal line 21 and thesingle ground plane 22 is as shown in fig. 6C, which is the first implementation structure of the present invention.
Fig. 7A to 7C are a structural diagram of a printed circuit board having even number arrays on a first surface thereof, a structural diagram of a ground plane having even number arrays on a second surface thereof, and an impedance matching diagram, wherein fig. 7A discloses a printedcircuit board 11 having even number arrays on a first surface thereof, and a short-circuited coplanar waveguide fed dual-polarizedbroadband antenna 1 having even number arrays on afirst surface thereof 31; in addition, fig. 7B discloses that the second side of the printedcircuit board 11 is provided with an even number of ground planes 32, so that the short-circuited coplanar waveguide feeds into the dual-polarizedbroadband antenna 1 to form an array antenna. The impedance diagram of the antenna formed by the even-numbered array ofsignal lines 31 and the even-numbered array of ground planes 32 is shown in fig. 7C, which is the second implementation structure of the present invention.
Fig. 8 shows a structural diagram of a metal plate disposed on the second surface of the printed circuit board of the antenna of the present invention, which takes the antenna structure disclosed in fig. 7A and 7B as an example, wherein the even-numbered array of the signal lines 31 on the first surface of the printedcircuit board 11 are upward, and ametal plate 4 is disposed on the second surface of the printedcircuit board 11 at a predetermined distance, and themetal plate 4 is electrically connected to a predetermined position of the even-numbered array of the ground planes 32, so that the short-circuited coplanar waveguide is fed into the dual-polarizedbroadband antenna 1 to form a directional antenna.
With the above disclosure in fig. 1 to 8, it can be understood that the present invention is a short-circuited coplanar waveguide-fed dual-polarized broadband antenna, which mainly provides a printed circuit board having a first surface and a second surface; the first surface of the printed circuit board is provided with a signal line, the second surface of the printed circuit board is provided with a ground plane, the printed circuit board is internally provided with a conduction body so as to enable the signal line and the ground plane to be electrically connected, the ground plane surrounds the signal line to form a coplanar waveguide-fed monopole antenna and has the characteristic of a dipole antenna, and the dual-polarized antenna with multiple frequencies and broadband is achieved by the structure. And, using the simple structure to form the array antenna with wide operation frequency band. The invention has certain improvement on the antenna structure of the mobile electronic product, thereby having the competitiveness in the commercial market, and the patent application is proposed to seek the protection of patent rights.
The above detailed description is directed to a preferred embodiment of the present invention, which is not intended to limit the scope of the invention, but rather is intended to cover all equivalent variations and modifications within the scope of the invention as defined in the appended claims.
Claims (8)
1. A shorted coplanar waveguide fed dual polarized broadband antenna comprising:
a printed circuit board having a first surface and a second surface; and
a signal line and a ground plane, the first surface of the printed circuit board is provided with the signal line, the second surface of the printed circuit board is provided with the ground plane, the printed circuit board is provided with a conduction body to make the signal line and the ground plane generate electrical connection, the ground plane surrounds the signal line to form a coplanar waveguide-fed monopole antenna with dipole antenna characteristics,
the appearance of the signal wire is in a long rectangular shape, the top end of the signal wire is further provided with an extension part, the bottom end of the signal wire is provided with a signal feed-in point, and the extension part forms a part of the signal wire, so that the efficiency of multi-frequency dual-polarization radiation is improved, and the resonance bandwidth of the antenna is increased.
2. The short-circuited coplanar waveguide-fed dual-polarized broadband antenna according to claim 1, wherein the ground plane has a "U" -shaped appearance, and the ground plane has a first horizontal radiating portion, a bent radiating portion and a second horizontal radiating portion, the first horizontal radiating portion and the second horizontal radiating portion are symmetric or asymmetric, and the bent radiating portion is surrounded by a groove area, the area of the groove area is equal to the area of the projection of the signal line on the first surface of the printed circuit board onto the second surface.
3. The shorted coplanar waveguide fed dual polarized broadband antenna of claim 1, wherein the signal line length is one quarter wavelength of the center frequency.
4. The shorted coplanar waveguide fed dual polarized broadband antenna of claim 1, wherein the length and width of the ground plane is one quarter wavelength of the center frequency.
5. The shorted coplanar waveguide fed dual polarized broadband antenna of claim 1, wherein the signal lines are an even number of arrays of signal lines and the ground plane is also configured as an even number of ground planes with respect to the even number of arrays of signal lines, such that the shorted coplanar waveguide fed dual polarized broadband antenna forms an array antenna.
6. The shorted coplanar waveguide fed dual polarized broadband antenna of claim 1, wherein a metal plate is disposed on the second side of the printed circuit board at a predetermined distance, the metal plate being electrically connected to a predetermined location of the ground plane, such that the shorted coplanar waveguide fed dual polarized broadband antenna forms a directional antenna.
7. The shorted coplanar waveguide fed dual polarized broadband antenna of claim 1, wherein the shorted coplanar waveguide fed dual polarized broadband antenna has a low frequency operating band of 2450MHz to 2500MHz and a high frequency operating band of 5150MHz to 5800MHz.
8. The shorted coplanar waveguide fed dual polarized broadband antenna of claim 1, wherein the via in the printed circuit board is formed by a via or a metal rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910955715.5ACN112635982B (en) | 2019-10-09 | 2019-10-09 | Short-circuit coplanar waveguide-fed dual-polarized broadband antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910955715.5ACN112635982B (en) | 2019-10-09 | 2019-10-09 | Short-circuit coplanar waveguide-fed dual-polarized broadband antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112635982A CN112635982A (en) | 2021-04-09 |
| CN112635982Btrue CN112635982B (en) | 2022-11-25 |
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| CN201910955715.5AActiveCN112635982B (en) | 2019-10-09 | 2019-10-09 | Short-circuit coplanar waveguide-fed dual-polarized broadband antenna |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM359815U (en)* | 2008-12-16 | 2009-06-21 | Univ Minghsin Sci & Tech | A flatbed multi-band antenna |
| CN101752657B (en)* | 2008-12-22 | 2013-01-02 | 宏碁股份有限公司 | Multi-frequency antenna |
| TWI383539B (en)* | 2009-08-14 | 2013-01-21 | Univ Nat Chiao Tung | Coplanar antenna unit and coplanar antenna |
| TWI352454B (en)* | 2009-08-14 | 2011-11-11 | Htc Corp | Planar antenna with isotropic radiation pattern |
| CN202474202U (en)* | 2012-02-03 | 2012-10-03 | 东莞骅国电子有限公司 | Printed Circuit Board Dual Band Broadband Antenna |
| TWI643402B (en)* | 2017-10-24 | 2018-12-01 | 和碩聯合科技股份有限公司 | Antenna structure and electronic device |
| CN208706868U (en)* | 2018-09-27 | 2019-04-05 | 佛山市戴柏通信技术有限公司 | A kind of two-way double polarized micro strip antenna of low section |
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