CN103311653A - Small high-isolation and wide-band antenna adopting differential feed and multilayer patch structures - Google Patents
Small high-isolation and wide-band antenna adopting differential feed and multilayer patch structures Download PDFInfo
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Abstract
The invention discloses a small high-isolation and wide-band antenna adopting differential feed and multilayer patch structures. The antenna comprises a pair of multilayer patch antennae which have the same structure and are orthogonally arranged back to back, wherein each multilayer patch antenna consists of three layers of medium plates and four layers of circuits. The antenna is applied to mobile communication. The differential feed structure well prevents the problem of cross polarization of an ordinary antenna, orthogonal arrangement further acquires higher isolation, and meanwhile, due to the adoption of the multilayer patch structure, two similar resonant frequencies are generated, and relatively large working band width is realized. The antenna is small in cross polarization, high in isolation and relatively large in band width, and the design conflict between antenna miniaturization and the wide frequency band, and between miniaturization and high isolation is well overcome. The antenna is applicable to mobile communication scenes, such as a compact repeater station and a small-power base station. The design is novel, creative and practical.
Description
Technical field
The present invention relates to the antenna in wireless mobile communications field, particularly a kind of based on differential feed and the wide band antenna of the high isolation of multiple-layered patches structure miniaturization.
Background technology
Antenna is to receive in the wireless communication system and send electromagnetic energy conversion device, is indispensable part in the mobile radio system.Along with the development of wireless mobile telecommunication technology, more and more higher to the requirement of antenna.The research of antenna just develops towards the direction of multiband, multipolarization, broadband, high isolation, miniaturization.Wherein bandwidth of operation and isolation are the important indicators of weighing the antenna service behaviour.
For micro-strip paster antenna, common method and the technology of expanding bandwidth of operation at present comprise following several: the one, and select the little baseplate material of dielectric constant for use, and increase substrate thickness; The 2nd, the shape of change microband paste; The 3rd, adopt feeding technique and impedance match technique; The 4th, adopt parasitic a period of time technology.
Under the scene of some mobile communication, because the restriction of volumetric spaces or application scenarios, antenna need be close to placement back-to-back, for example when and highway along the line to railway carry out the mobile communication signal covering, the zone that covers point-blank, dual-mode antenna adopts the form of placing back-to-back to be conducive to antenna miniaturization, makes the antenna structure compactness.In addition in scenes such as ICS repeater, road and rail tunnel for example, skyscraper, airtight warehouse, small libraries etc. also need antenna to be set to back-to-back form to reduce equipment volume.Will obtain good receive-transmit isolation this moment is an important techniques problem.
In the design process of micro-strip paster antenna, under miniaturization, obtain the high difficult point that wide band antenna is research always of isolating.And the problem that design exists is: if want to obtain higher isolation, then require the interval of two slave antennas bigger, if will expect wideer frequency band, so just require radiation patch bigger to the height between the metal floor, can make antenna volume become big like this.And general design can not solve miniaturization and broadband and miniaturization and the contradiction between high the isolation well simultaneously, can solve the design of above contradiction, and antenna volume is bigger again.
Summary of the invention
Adopt differential feed and the wide band antenna of the high isolation of multiple-layered patches structure miniaturization for solving above-mentioned miniaturization and broadband and miniaturization and the design contradiction between high the isolation, the invention provides, concrete technical scheme is as follows.
Adopt that differential feed and the miniaturization of multiple-layered patches structure are high isolates wide band antenna, it is in comprising the identical but multiple-layered patches antenna placed of quadrature back-to-back of a pair of structure; Each multiple-layered patches antenna includes three layers of FR4 epoxy glass cloth laminated board and four layers of circuit, comprises ground floor FR4 epoxy glass cloth laminated board dielectric-slab, second layer FR4 epoxy glass cloth laminated board and the 3rd layer of FR4 epoxy glass cloth laminated board successively from back-to-front; Ground floor circuit in four layers of circuit is the metal floor that is printed on ground floor FR4 epoxy glass cloth laminated board bottom surface, second layer circuit is the anti-phase power splitter that is printed on above the ground floor FR4 epoxy glass cloth laminated board, and the 3rd layer of circuit is ground floor rectangular patch and the rectangle feed sheet metal that is printed on above the second layer FR4 epoxy glass cloth laminated board; The ground floor rectangular patch has the groove parallel with the broadside of ground floor rectangular patch, and rectangle feed sheet metal is positioned at this groove, and leaves the slit between rectangle feed sheet metal and the ground floor paster; The 4th layer of circuit is to be printed on the 3rd layer of second layer rectangular patch above the FR4 epoxy glass cloth laminated board, and metal floor is connected by ground hole with anti-phase power splitter, and ground hole passes ground floor FR4 epoxy glass cloth laminated board, the output of anti-phase power splitter is connected by cylindrical feed probes with rectangle feed sheet metal, and cylindrical feed probes is passed second layer FR4 epoxy glass cloth laminated board.
Of the present invention two secondary multiple-layered patches antennas quadrature are back-to-back placed, and make the main pole direction quadrature of two secondary multiple-layered patches antennas to reduce the influence between receiving terminal and the transmitting terminal main pole signal; Two arm lengths of described anti-phase power splitter differ half of central task frequency corresponding wavelength, and two ends are output as inversion signal, form differential feed structure, can suppress cross polarization, more than two kinds of technical characterictics all improved the isolation of antenna.Rectangle feed sheet metal and ground floor rectangular patch are printed on the end face of second layer FR4 epoxy glass cloth laminated board, and micro gap is arranged between them, produce capacitive coupling and inductance coupling high, form series resonant network, and resonant frequency point is provided.
Further, described groove number is two, respectively near two broadsides of ground floor rectangular patch.
Further, the number of described cylindrical feed probes is a plurality of, and a plurality of cylindrical feed probes are connected in parallel, and can reduce inductive effect, the broadening working band, and a plurality of cylindrical feed probes are divided two rows, every row structure that is centrosymmetric; The resonance limit, narrow limit of ground floor rectangular patch is shorter than the resonance limit, narrow limit of second layer rectangular patch, produces two resonant frequency points that approach with this, and resonance limit, the narrow limit generation main poleization by ground floor rectangular patch and second layer rectangular patch reduces cross polarization; The thickness that increases ground floor FR4 epoxy glass cloth laminated board and second layer FR4 epoxy glass cloth laminated board can reduce the Q value of antenna, more than the equal working band of energy broadening antennas of three kinds of technical characterictics.
Ground floor paster of the present invention and second layer paster are rectangle, interval FR4 epoxy glass cloth laminated board between them, and the resonance limit, narrow limit of second layer paster is slightly larger than the resonance limit, narrow limit of ground floor paster, to produce two resonance frequencys that are close, by increasing parasitic a period of time, broadening working band.
Operation principle of the present invention: signal is by a wherein secondary multiple-layered patches antenna port input, producing two through anti-phase power splitter effect only is the opposite signal of phase place, form differential feed and suppress cross polarization, by cylindrical feed probes respectively feed embed the ground floor rectangular patch that rectangle feed sheet metal is arranged, produce the first resonance frequency f1 through the inductance parallel network of slit equivalence and the effect on resonance limit, the narrow limit of ground floor rectangular patch, because the effect on resonance limit, the narrow limit of second layer rectangular patch produces the second resonance frequency f2, and f1 is close with f2, between form coupling effect, thereby expanded bandwidth of operation.
Same signal therein the electromagnetic wave main pole direction that produces of a secondary multiple-layered patches antenna just in time with the quadrature of other one secondary multiple-layered patches antenna, reduced influencing each other between both main pole signals, and the back lobe of multiple-layered patches antenna is less, places back-to-back and has further improved receive-transmit isolation.
Compared with prior art, the wide band antenna of the high isolation of the employing differential feed of invention and the miniaturization of multiple-layered patches structure has following beneficial effect:
1. adopt the differential feed mode to suppress cross polarization, improve the receive-transmit isolation of antenna;
Under the limited situation of antenna height broadening working band;
3. antenna structure compactness, the volume miniaturization.
Description of drawings
Fig. 1 is the stereochemical structure layering schematic diagram of embodiment of the invention multiple-layered patches antenna;
Fig. 2 is the perspective view figure of embodiment of the invention multiple-layered patches antenna;
Fig. 3 is the anti-phase power splitter schematic top plan view of the second layer circuit of embodiment of the invention multiple-layered patches antenna;
Fig. 4 is the 3rd layer of circuit ground floor rectangular patch end view of embodiment of the invention multiple-layered patches antenna;
Fig. 5 is the 3rd layer of circuit ground floor rectangular patch schematic top plan view of embodiment of the invention multiple-layered patches antenna;
Fig. 6 is the cutaway view that the second layer FR4 epoxy glass cloth laminated board of embodiment of the invention multiple-layered patches antenna is crossed cylindrical feed probes central shaft;
Fig. 7 is the schematic side view of embodiment of the invention multiple-layered patches antenna;
Fig. 8 is the schematic top plan view of embodiment of the invention multiple-layered patches antenna ground floor rectangular patch and second layer rectangular patch;
Fig. 9 is the whole schematic side view of the embodiment of the invention, and last 01 and down 02 represents the multiple-layered patches antenna respectively;
Figure 10 is the isolation S21-frequency simulation result figure of the embodiment of the invention;
Figure 11 is the voltage standing wave ratio VSWR-frequency simulation result figure of the embodiment of the invention;
Figure 12 is embodiment of the invention multiple-layered patches antenna directional diagram during Phi=0deg under 920MHz;
Figure 13 is embodiment of the invention multiple-layered patches antenna directional diagram during Phi=90deg under 920MHz.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme that the embodiment of the invention adopts is carried out clear, detailed explanation, described embodiment only is a part of embodiment among the present invention, rather than whole embodiment.Based on embodiments of the invention, other embodiment that those of ordinary skills obtain under the prerequisite of not making creative work belong to the protection range of the embodiment of the invention.
The embodiment of the invention provides a kind of employing differential feed and the wide band antenna of the high isolation of multiple-layered patches structure miniaturization.
As Fig. 1, Fig. 2, adopt that differential feed and the miniaturization of multiple-layered patches structure are high isolates wide band antenna, it comprises the identical but multiple-layered patches antenna placed of quadrature back-to-back of a pair of structure; Each multiple-layered patches antenna includes three layers of FR4 epoxy glass cloth laminated board and four layers of circuit, comprises ground floor FR4 epoxy glass cloth laminated board 3, second layer FR4 epoxy glass cloth laminated board 5 and the 3rd layer of FR4 epoxy glass cloth laminated board 9 successively from back-to-front; Ground floor circuit in four layers of circuit is the metal floor 1 that is printed on ground floor FR4 epoxy glass cloth laminated board 3 bottom surfaces, second layer circuit is that 4, the three layers of circuit of anti-phase power splitter that are printed on above the ground floor FR4 epoxy glass cloth laminated board 3 are ground floor rectangular patch 8 and the rectangle feed sheet metals 7 that is printed on above the second layer FR4 epoxy glass cloth laminated board 5; Ground floor rectangular patch 8 has the groove parallel with the broadside of ground floor rectangular patch 8, and rectangle feed sheet metal 7 is positioned at this groove, and leaves the slit between rectangle feed sheet metal 7 and the ground floor paster 8; The 4th layer of circuit is the second layer rectangular patch 10 that is printed on above the 3rd layer of FR4 epoxy glass cloth laminated board 9, and metal floor 1 is connected by ground hole 2 with anti-phase power splitter 4, and ground hole 2 passes ground floor FR4 epoxy glass cloth laminated board 3, the output of anti-phase power splitter 4 is connected by cylindrical feed probes 6 with rectangle feed sheet metal 7, and cylindrical feed probes 6 is passed second layer FR4 epoxy glass cloth laminated board 5(such as Fig. 6).
As Fig. 9, present embodiment has comprised one-to-many laminating chip antenna (01 and 02) and metal fixed housing.Wherein metal shell is rectangular structure, does not have end face and bottom surface, described this (01 and 02 lays respectively at top and the bottom of metal shell to the multiple-layered patches antenna.And this is to multiple-layered patches antenna structure unanimity, and quadrature is positioned over bottom and the top of metal shell back-to-back.
Spacing between the one-to-many laminating chip antenna (01 and 02) and the size of metal fixed housing are limited by actual requirement of engineering, it is under the 930MHz that the embodiment of the invention has provided in centre frequency, and spacing between the two is 35mm, the long 194mm of metal fixed housing, wide 159mm, high 60mm.Overall dimensions of the present invention is not unique, and concrete size is according to actual engineering demand setting.
With reference to Fig. 7, the multiple-layered patches antenna comprises three layers of dielectric-slab and four layers of circuit.
Three layers of dielectric-slab comprise ground floor FR4 epoxy glass cloth laminated board 3, second layer FR4 epoxy glass cloth laminated board 5 and the 3rd layer of FR4 epoxy glass cloth laminated board 9.
Four layers of circuit comprise metal floor 1, anti-phase power splitter 4, rectangle feed sheet metal 7, ground floor rectangular patch 8 and second layer rectangular patch 10.
Wherein the bottom of ground floor FR4 epoxy glass cloth laminated board 3 is printed and be covered in to metal floor 1, and ground hole 2 adopts metallization via hole technology, runs through ground floor FR4 epoxy glass cloth laminated board 3, connects metal floor 1 and anti-phase power splitter 4.Wherein ground hole 2 is centrosymmetric, and number is followed the example of not unique.Accompanying drawing 4 embodiment have just provided the situation signal of getting 5 of 1 rows.
With reference to Fig. 3, anti-phase power splitter 4 is printed on the ground floor FR4 epoxy glass cloth laminated board 3 for microstrip line construction.Rectangular sheet 401 ground connection wherein, port 402 is input, rectangular microstrip two arms (403 and 404) that input connects are the quarter-wave L1 of corresponding operating frequency; Rectangular microstrip 1(405 and 406) length L 2 is than rectangular microstrip 2(407 and 408) 1/2nd wavelength L4 of the short corresponding operating frequencies of length L 3, make and differ 180 inversion signals of spending at T type feed end (409 and 410) output phase, this differential configuration is conducive to suppress orthogonal polarization, improves isolation.Wherein all for the central task frequency, they all change with the change of central task frequency for L1, L2, L3 and L4.
With reference to Fig. 5,6 fens two rows of a plurality of cylindrical feed probes in intermediate layer, every row is centrosymmetric, and number is followed the example of not unique.Indicated 3 in the schematic diagram, it adopts metallization via hole technology, passes second layer FR4 epoxy glass cloth laminated board 5, has connected T type feed end (409 and 410) and the rectangle feed sheet metal 7 of anti-phase power splitter 4.The number of above-mentioned cylindrical feed probes 6 is followed the example of not unique, and its essential purpose is in order to form a plurality of inductance parallel connections, to reduce inductive effect, the broadening working band.
As Fig. 5, rectangle feed sheet metal (701,702) and ground floor rectangular patch 8 all are printed on the top of second layer FR4 epoxy glass cloth laminated board 5.Provided the central task frequency among the embodiment under the situation of 930MHz, in ground floor rectangular patch 8 broadside stage casings, and have the long groove of 4mm that is for 50.4mm is wide apart from broadside 1.5mm place, rectangle feed sheet metal 7 is put into the groove of ground floor rectangular patch 8, between micro gap (801 and 802) is arranged, be coupled by the capacitor and inductor effect.Be limited to the actual requirement of engineering and machining accuracy, above-mentioned slit value can be different.Provided the central task frequency among the embodiment under the situation of 930MHz, micro gap 801 is 0.7mm, and 802 is 0.2mm.
For top layer, second layer rectangular patch 10 is printed on the 3rd layer of FR4 epoxy glass cloth laminated board 9 top.
In conjunction with the schematic side view of Fig. 7 multiple-layered patches antenna, the thickness of three layers of FR4 epoxy glass cloth laminated board has significant difference.The thickness minimum of ground floor FR4 epoxy glass cloth laminated board 3 wherein, the thickness of second layer FR4 epoxy glass cloth laminated board 5 takes second place, the 3rd layer of FR4 epoxy glass cloth laminated board 9 maximum.Provide the work centre frequency in embodiments of the present invention under the situation of 930MHz, the thickness of ground floor FR4 epoxy glass cloth laminated board 3 is 1.6 mm, the thickness of second layer FR4 epoxy glass cloth laminated board 5 is 3.2mm, and the thickness of the 3rd layer of FR4 epoxy glass cloth laminated board 9 is 6.4mm.
In specific embodiment, the thickness of three layers of FR4 epoxy glass cloth laminated board can be adjusted, generally speaking in order to obtain big bandwidth of operation, increase the thickness of ground floor FR4 epoxy glass cloth laminated board 3 and second layer FR4 epoxy glass cloth laminated board 5, just increase ground floor rectangular patch 8 to the distance of metal floor 1, to reduce the Q value.
The method that the embodiment of the invention is combined with increase feed probes number by the thickness that increases the FR4 epoxy glass cloth laminated board obtains big frequency band.In reality is implemented, can limit antenna volume under most of situation, at this moment can be by above-mentioned two kinds of method combinations, increase the feed number, the corresponding distance that reduces between dielectric-slab thickness and the two secondary multiple-layered patches antennas is offset the influence of limiting factor (s), thereby is designed miniature antenna.
With reference to Fig. 8, the resonance limit, narrow limit of ground floor rectangular patch 8 is shorter than the resonance limit, narrow limit of second layer rectangular patch 10, but length is close, and produces two resonant frequency points that approach with this, by increasing parasitic a period of time, broadening bandwidth of operation.Wherein the narrow limit of rectangular patch is the resonance limit.Provide the work centre frequency among the embodiment under the situation of 930MHz, the resonance limit of ground floor rectangular patch 8 is 67mm, and the resonance limit of second layer rectangular patch 10 is 69mm, and the resonance limit of second layer rectangular patch 10 is than the resonance length of side 2mm of ground floor rectangular patch 8.
In the concrete engineering construction, can adjust the length on ground floor rectangular patch and resonance limit, the narrow limit of second layer rectangular patch according to job requirement, thereby change the frequency of resonance point.
The present invention is by the embodiment of above specification processing gained, with reference to Figure 10 isolation S21-frequency diagram, draw according to simulation result, frequency of heart is under the situation of 930MHz at work, obtaining whole receive-transmit isolation S21 is 72.5db, has suppressed cross-polarized influence well.
With reference to Figure 11 voltage standing wave ratio VSWR-frequency diagram, draw according to simulation result, be the upper limit (its corresponding return loss is about 15db) with voltage standing wave ratio VSWR1.4, the bandwidth of the embodiment of the invention is near 100MHz, and the beamwidth of antenna is bigger.
With reference to Figure 12, the multiple-layered patches antenna is the directional diagram during Phi=0deg under 920MHz, and the main pole maximum is than the big 35db of cross polarization maximum; With reference to Figure 13, the multiple-layered patches antenna is the directional diagram during Phi=90deg under 920MHz, and the main pole maximum is than the big 35db of cross polarization maximum, and this explanation multiple-layered patches antenna has suppressed cross-polarized influence well.
The present invention is 194mm*159mm*60mm by the whole size of embodiment of above specification processing gained, and wherein the bottom surface is 194mm*159mm, and thickness is 60mm.
In sum, the STRUCTURE DEPRESSION of new antenna proposed by the invention cross polarization, improved the isolation of antenna.When obtaining good isolation, also adopt the multiple-layered patches structure, utilize parasitic patch to produce a plurality of resonance frequencys with the broadening working band, also can reduce the Q value by increasing dielectric-slab thickness simultaneously, obtain bigger working band, and the present invention is conducive to the miniaturization of antenna, makes the antenna structure compactness.
Embodiment provided by the invention is mainly used in the wireless mobile communications field, can be applicable to all kinds of radio communication sending and receiving receiving units (as the ICS repeater, the micropower base station) in, be specially adapted to scenes such as compact repeater and small-power base station, concrete highway and the railway tunnel of being used for, skyscraper, airtight warehouse, places such as small library.Above-mentioned single multiple-layered patches antenna can be reception antenna, also can be transmitting antenna, and a pair of above-mentioned multiple-layered patches antenna can be configured for improving reception and the emitter of indoor wireless signal repeater.Except GSM, this technology also can be used in other frequency ranges and the other system.
More than be to a kind of detailed introduction of adopting differential configuration and the high embodiment that wide band new antenna provides of isolation of multiple-layered patches structure miniaturization of the present invention.This paper has used specific case that principle of the present invention and execution mode are set forth, and the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.
For one of ordinary skill in the art, according to thought of the present invention, army's part that can change in specific embodiments and applications, to sum up, this description should not be construed as limitation of the present invention.
Claims (5)
1. adopt that differential feed and the miniaturization of multiple-layered patches structure are high isolates wide band antenna, it is characterized in that comprising the identical but multiple-layered patches antenna placed of quadrature back-to-back of a pair of structure; Each multiple-layered patches antenna includes three layers of FR4 epoxy glass cloth laminated board and four layers of circuit, comprises ground floor FR4 epoxy glass cloth laminated board (3), second layer FR4 epoxy glass cloth laminated board (5) and the 3rd layer of FR4 epoxy glass cloth laminated board (9) successively from back-to-front; Ground floor circuit in four layers of circuit is the metal floor (1) that is printed on ground floor FR4 epoxy glass cloth laminated board (3) bottom surface, second layer circuit is the anti-phase power splitter (4) that is printed on above the ground floor FR4 epoxy glass cloth laminated board (3), and the 3rd layer of circuit is ground floor rectangular patch (8) and the rectangle feed sheet metal (7) above being printed on second layer FR4 epoxy glass cloth laminated board (5); Ground floor rectangular patch (8) has the groove parallel with the broadside of ground floor rectangular patch (8), and rectangle feed sheet metal (7) is positioned at this groove, and leaves the slit between rectangle feed sheet metal (7) and the ground floor paster (8); The 4th layer of circuit is the second layer rectangular patch (10) above being printed on the 3rd layer of FR4 epoxy glass cloth laminated board (9), and metal floor (1) is connected by ground hole (2) with anti-phase power splitter (4), and ground hole (2) passes ground floor FR4 epoxy glass cloth laminated board (3), the output of anti-phase power splitter (4) is connected by cylindrical feed probes (6) with rectangle feed sheet metal (7), and cylindrical feed probes (6) is passed second layer FR4 epoxy glass cloth laminated board (5).
2. employing differential feed according to claim 1 and the miniaturization of multiple-layered patches structure height is isolated wide band antenna, the number that it is characterized in that the described groove that has on the ground floor rectangular patch (8) is two, respectively near (8) two broadsides of ground floor rectangular patch.
3. employing differential feed according to claim 1 and the miniaturization of multiple-layered patches structure height is isolated wide band antenna, two arm lengths that it is characterized in that described anti-phase power splitter (4) differ half of central task frequency corresponding wavelength, two ends are output as inversion signal, form differential feed structure.
4. according to the described employing differential feed of claim 1 and the high broadband of isolating of multiple-layered patches structure miniaturization
Antenna, the number that it is characterized in that described cylindrical feed probes (6) is a plurality of, a plurality of cylindrical feed probes (6) are connected in parallel, a plurality of cylindrical feed probes (6) are divided two rows, every row structure that is centrosymmetric; The resonance limit, narrow limit of ground floor rectangular patch (8) is than the narrow limit of second layer rectangular patch (10).
5. according to the described employing differential feed of claim 1 and the wide band antenna of the high isolation of multiple-layered patches structure miniaturization, it is characterized in that ground floor paster and second layer paster are rectangle.
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| CN201310186686.3A CN103311653B (en) | 2013-05-20 | 2013-05-20 | Adopt differential feed and the wide band antenna of multiple-layered patches miniaturized structure height isolation |
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| CN105264714A (en) * | 2014-04-22 | 2016-01-20 | 华为技术有限公司 | Multi-polarization substrate integrated waveguide antenna |
| CN106469848A (en) * | 2015-08-20 | 2017-03-01 | 南京理工大学 | A kind of broadband paster antenna based on double resonance pattern |
| CN107196052A (en) * | 2017-04-13 | 2017-09-22 | 成都电科星天科技有限公司 | The low elevation angle omnidirectional radiation circular polarized antenna of small size |
| CN107196053A (en) * | 2017-04-13 | 2017-09-22 | 成都电科星天科技有限公司 | The low elevation angle omnidirectional radiation dual circularly polarized antenna of small size |
| CN108808233A (en) * | 2018-06-06 | 2018-11-13 | 深圳市深大唯同科技有限公司 | A kind of high-gain broadband dual-polarized patch antenna |
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| CN114204256A (en) * | 2021-11-29 | 2022-03-18 | 广东工业大学 | Broadband high-isolation patch antenna applied in full duplex and wireless communication equipment |
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| CN105264714A (en) * | 2014-04-22 | 2016-01-20 | 华为技术有限公司 | Multi-polarization substrate integrated waveguide antenna |
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| CN108808233A (en) * | 2018-06-06 | 2018-11-13 | 深圳市深大唯同科技有限公司 | A kind of high-gain broadband dual-polarized patch antenna |
| CN108808233B (en) * | 2018-06-06 | 2024-01-30 | 中天宽带技术有限公司 | High-gain broadband dual-polarized patch antenna |
| WO2021022941A1 (en) * | 2019-08-06 | 2021-02-11 | 维沃移动通信有限公司 | Antenna array and terminal |
| CN111029759A (en) * | 2019-12-05 | 2020-04-17 | 南京理工大学 | SIW parallel feed array antenna with low cross polarization |
| CN113097745A (en) * | 2021-04-08 | 2021-07-09 | 电子科技大学 | Wide-beam parasitic pixel layer antenna for one-dimensional large-angle scanning |
| CN114204256A (en) * | 2021-11-29 | 2022-03-18 | 广东工业大学 | Broadband high-isolation patch antenna applied in full duplex and wireless communication equipment |
| CN116722363A (en) * | 2023-08-10 | 2023-09-08 | 成都天成电科科技有限公司 | Composite structure broadband phased array antenna unit and antenna |
| CN116722363B (en) * | 2023-08-10 | 2023-10-20 | 成都天成电科科技有限公司 | Composite structure broadband phased array antenna unit and antenna |
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