CN107732465A - A kind of Dual-band dual-polarization quickly falls rectangle transmission distance antenna - Google Patents
A kind of Dual-band dual-polarization quickly falls rectangle transmission distance antenna Download PDFInfo
- Publication number
- CN107732465A CN107732465A CN201710832632.8A CN201710832632A CN107732465A CN 107732465 A CN107732465 A CN 107732465A CN 201710832632 A CN201710832632 A CN 201710832632A CN 107732465 A CN107732465 A CN 107732465A
- Authority
- CN
- China
- Prior art keywords
- power division
- division network
- polarization
- dual
- radiating element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
- H01Q21/065—Patch antenna array
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a kind of Dual-band dual-polarization quickly to fall rectangle transmission distance antenna, including：Aerial radiation front and feeding network；Aerial radiation front includes N × N number of radiating element；Each radiating element includes+45 ° of polarization ports for connecting a secondary Microwave Net respectively and 45 ° of polarization ports；Feeding network includes horizontal power distribution network and vertical power distribution network, the output port of horizontal power distribution network inputs mouth connection vertical power distribution network, delivery outlet connects the radiating element in radiation submatrix, vertical power distribution network input port connection combiner by Microwave Net；The present invention can realize Antenna Operation in the range of 1710MHz~2170MHz and 2300MHz~2690MHz band operations, 3dB beam angles are 22 °~28 °, 3dB~20dB level of horizontal section and plumb cut roll-offs in the range of 10 °, reduce 50% in radiating element total number while reduce antenna weights and production cost, and a step reduces the difficulty of antenna installation.
Description
Technical field
It is more particularly to a kind of quickly to fall rectangle transmission distance antenna the present invention relates to microwave antenna art field.
Background technology
The level of the horizontal section of figuration venue radiation pattern common at present and 3dB~20dB of plumb cut
Roll-off in the range of mostly 20 °~25 °, such as Application No. 201510705631.8《A kind of wideband array antenna》, application number
For 201510936949.7《Rectangle shaped aerial array》It is such case.In Application No. 201610982345.0
《A kind of wave beam Sidelobe of dual polarization two quickly falls array antenna》Disclosed in scheme in, antenna realizes in Vertical Square first
It is less than 14 ° in 3dB to 20dB power fall downs angle upwards, but exists in the horizontal direction in 3dB to 20dB power fall down angles
20 °, in the design of these three patents, 3dB~20dB of antenna radiation pattern horizontal section and plumb cut level roll-offs still
It is not fast enough.
Meanwhile current figuration venue antenna is due to being limited to the bandwidth limitation of antenna in itself, at present transmission distance antenna
Mentality of designing be that common antenna radiation front and corresponding feed are utilized in 1710MHz~2170MHz working frequency range
Performance in this sectional area of real-time performance, in 2300MHz~2690MHz working frequency range using another width radiation front and
Corresponding feeding network realizes the performance in this sectional area, and two frequency band signals then are combined into place by combiner
Reason.Three of the above patent is this mentality of designing.
The problem of transmission distance antenna that presently, there are is present be mainly：3dB~20dB of horizontal section and plumb cut
Level roll-off not enough fast, when caused actual venue carries out sector arrangement, definition is not good enough between sector.Meanwhile
In the range of 1710MHz~2170MHz and 2300MHz~2690MHz band operation, two radiation fronts be present, cause battle array
The radiating element numbers of row is more, causes production cost to improve；It is larger that the size of antenna is caused simultaneously, heavier-weight so that
During actual venue is laid out antenna, there is certain difficulty in the erection of antenna.Therefore, in order to solve array antenna
3dB~20dB of horizontal section and plumb cut level roll-offs not enough soon, due to radiating element caused by two radiation fronts
Excessively, production cost is high, the size of array is big, the problems such as heavier-weight, it is desirable to provide than existing antenna 3dB~20dB level
Roll-off faster, than existing array antenna radiation front is few, radiating element is few array antenna so as to reducing the production of antenna
A series of problems, such as cost, array sizes, weight of antenna.
The content of the invention
The purpose of the present invention is：The shortcomings of the prior art, there is provided one kind is in 1710MHz~2170MHz and 2300MHz
In the range of~2690MHz band operations ensure antenna radiation pattern for rectangle figuration characteristic, horizontal section and plumb cut 3dB~
20dB level roll-offs in the range of 10 °, Dual-band dual-polarization of the total space minor level no more than 20dB quickly falls rectangle tax
Shape array antenna.
The technical scheme is that：A kind of Dual-band dual-polarization quickly falls rectangle transmission distance antenna, including：Antenna
Radiate front and feeding network；
The aerial radiation front includes N × N number of radiating element, and N number of radiating element of horizontal direction forms one group of radiation
Submatrix, N are the integer not less than 2；The adjacent radiating element spacing is identical in horizontal direction, is designated as dx；On vertical direction
The radiation submatrix spacing is identical, is designated as dy；dx、dyIn 0.4 times of center frequency wavelength~1.6 times center frequency wavelength scope
It is interior；The working frequency of the radiating element is in 1710MHz~2170MHz and 2300MHz~2690MHz band limits；
The feeding network includes：The horizontal power division network of 2N low frequency, the horizontal power division network of 2N high frequency, two low frequencies hang down
Straight power division network and two frequency vertical power division networks；Each radiation submatrix corresponds to the horizontal power division network of two low frequencies and two
The individual horizontal power division network of high frequency；
Each radiating element includes two polarization ports, is respectively+45 ° of polarization ports and -45 ° of polarization ports, and two
Individual polarization port respectively connects a secondary Microwave Net；
On+45 ° of polarization ports of the radiating element of same radiation submatrix, the first input port connection of Microwave Net is low
Frequently horizontal power division network A output port, the horizontal power division network A of the second input port connection high frequency of Microwave Net output end
Mouthful；The input port connection low frequency vertical power division network A of the horizontal power division network A of low frequency output port, the High-frequency water
Flat power division network A input port connection frequency vertical power division network A output port；The low frequency vertical power division network A's
The input port connection combiner A of input port, the frequency vertical power division network A；
On -45 ° of polarization ports of the radiating element of same radiation submatrix, the first input port connection of Microwave Net is low
Frequently horizontal power division network B output port, the horizontal power division network B of the second input port connection high frequency of Microwave Net output end
Mouthful；The input port connection low frequency vertical power division network B of the horizontal power division network B of low frequency output port, the High-frequency water
Flat power division network B input port connection frequency vertical power division network B output port；The low frequency vertical power division network B's
The output port link road combiner B of output port, the frequency vertical power division network B.
Specifically ,+45 °, in -45 ° of polarised directions, on 1710MHz~2170MHz working frequency range, horizontal power point
Distribution network quantity is identical with the number for radiating submatrix, and vertical power distribution network number is one；
+ 45 °, in -45 ° of polarised directions, on 2300MHz~2690MHz working frequency range, horizontal power distributes the number networks
Identical with the number for radiating submatrix, vertical power distribution network number is one.
The antenna of the present invention is in the range of 1710MHz~2170MHz and 2300MHz~2690MHz band operations, Ke Yi
A fixed beam is generated in the range of full three dimensions, the wave beam is rectangle shaped-beam, i.e. is seen in contour map, its direction
Figure is square profile, and 3dB~20dB level of horizontal section and plumb cut roll-offs in the range of 10 °, in full three dimensions
Minor level be not more than 20dB.
Beneficial effect：
The present invention realizes Antenna Operation in 1710MHz~2170MHz and 2300MHz merely with a collateral radiation front can
In the range of~2690MHz band operations, 3dB beam angles are 22 °~28 °, 3dB~20dB electricity of horizontal section and plumb cut
It is flat to roll-off in the range of 10 °, reduce 50% in radiating element total number while reduce antenna weights and production cost, enter one
Step reduces the difficulty of antenna installation.
Brief description of the drawings
Fig. 1 is the structure composition schematic diagram of the present invention；
Fig. 2 is the structural representation of aerial radiation front in the embodiment of the present invention；
Fig. 3 is the present invention in the horizontal section of 1.71GHz working frequency points, the antenna pattern of plumb cut；
Fig. 4 is the present invention in the horizontal section of 2.17GHz working frequency points, the antenna pattern of plumb cut；
Fig. 5 is the present invention in the horizontal section of 2.3GHz working frequency points, the antenna pattern of plumb cut；
Fig. 6 is the present invention in the horizontal section of 2.69GHz working frequency points, the antenna pattern of plumb cut；
Fig. 7 is the present invention in 1.71GHz working frequency points contour antenna patterns；
Fig. 8 is the present invention in 2.17GHz working frequency points contour antenna patterns；
Fig. 9 is the present invention in 2.3GHz working frequency points contour antenna patterns；
Figure 10 is the present invention in 2.69GHz working frequency points contour antenna patterns.
Embodiment
The present invention will now be described in detail with reference to the accompanying drawings and examples.
This example provides a band limits for being operated in 1710MHz~2170MHz and 2300MHz~2690MHz
Interior rectangle shaped aerial, the 3dB beam angles of its centre frequency are 25 °.
Fig. 1 shows that a kind of Dual-band dual-polarization quickly falls the schematic diagram of rectangle transmission distance antenna, and it includes：Antenna
Radiate front 1 and fourth officer feeding network；
The fourth officer feeding network includes：The horizontal power division network 2,3 of low frequency, the horizontal power division network 4,5 of high frequency, low frequency vertical
Power division network 6,7, frequency vertical power division network 8,9；
Radiating element in wherein described radiation front 1 is dual polarization crossed dipole antenna or dual polarization metal
Paster antenna, the design work frequency of the antenna are 1710MHz~2170MHz and 2300MHz~2690MHz band limits
It is interior.
The horizontal power division network 2 of the low frequency power division network 3 horizontal with the low frequency is identical configuration, corresponds to battle array respectively
Array antenna is operated in 1.71GHz~2.17GHz+45 ° of polarization and -45 ° of polarization；The horizontal power division network 4 of the high frequency and described
The horizontal power division network 5 of high frequency is identical configuration, corresponds to+45 ° of poles that array antenna is operated in 2.3GHz~2.69GHz respectively
Change and -45 ° are polarized；The low frequency vertical power division network 6 is identical configuration with the low frequency vertical power division network 7, respectively
Corresponding array antenna is operated in 1.71GHz~2.17GHz+45 ° of polarization and -45 ° of polarization；The frequency vertical power division network 8
It is identical configuration with the frequency vertical power division network 9, corresponds to array antenna respectively and be operated in 2.3GHz~2.69GHz's
+ 45 ° of polarization and -45 ° of polarization.
Fig. 2 shows the schematic diagram of aerial radiation front 1, it is preferred that the aerial radiation front 1 contains eight radiation altogether
Submatrix, each radiate in submatrix contain eight radiating elements, and whole battle array amounts to 64 radiating elements；Aerial radiation front 1 is by spoke
Penetrate submatrix 11, radiation submatrix 12, radiation submatrix 13, radiation submatrix 14, radiation submatrix 15, radiation submatrix 16, radiation submatrix 17 and
Radiation submatrix 18 forms.It is d to radiate adjacent cells spacing in submatrixx, preferable dxFor 0.5 times of center operating frequency wavelength；It is adjacent
It is d to radiate submatrix spacingy, it is preferred that dyFor 0.5 times of center operating frequency wavelength.
+ 45 ° of polarization ports of radiating element in each radiation submatrix connect small microwave network input port respectively,
- 45 ° of polarization ports of radiating element in each radiation submatrix connect small microwave network input port respectively, and whole battle array amounts to 128
Individual small microwave network.
Polarized at+45 ° on port, in eight output ports connection radiation submatrix of each horizontal power division network 2 of low frequency
Each Microwave Net first input port of eight radiating elements, eight output ports of each horizontal power division network 4 of high frequency connect
Connect the input port of each Microwave Net second of eight radiating elements in radiation submatrix.The horizontal power division network 2 of eight low frequencies
The output port of input port connection low frequency vertical power division network 6, the input port connection of the horizontal power division network 4 of eight high frequencies are high
The output port of the vertical power division network 8 of frequency；The input port of low frequency vertical power division network 6, the input port of frequency vertical power division network 8
Connect combiner all the way.
Polarized at -45 ° on port, in eight output ports connection radiation submatrix of each horizontal power division network 3 of low frequency
Each Microwave Net first input port of eight radiating elements, eight output ports of each horizontal power division network 5 of high frequency connect
Connect the input port of each Microwave Net second of eight radiating elements in radiation submatrix.The horizontal power division network 3 of eight low frequencies
The output port of input port connection low frequency vertical power division network 7, the input port connection of the horizontal power division network 5 of eight high frequencies are low
The output port of the vertical power division network 9 of frequency；Low frequency vertical power division network 3 enters output port, frequency vertical power division network 5 in polarization
Enter output port connection another way combiner.
Working frequency range of the embodiment in the whole 1710MHz~2170MHz and 2300MHz~2690MHz of venue antenna
In the range of there is single main lobe.3dB beam angles in the range of whole working frequency range are at 22 °~28 °.Horizontal direction, Vertical Square
To two sections on upper 3dB to 20dB power fall downs angle no more than 10 °；Full three dimensions minor level is not more than 20dB.
It is nearly positive direction shape on 3dB~20dB contour maps of antenna pattern.Ensureing to effectively reduce the hot zones such as venue
The adjacent sectors interference in domain, realizes channeling, on the premise of further improving communication network capacity, by radiating element total number
Reduce 50% simultaneously, the difficulty of antenna installation can be further reduced while reducing antenna weights and production cost, it is real
The miniaturization of array antenna is showed.
It is emphasized that each radiating submatrix, spacing is fixed between horizontal direction adjacent vibration generators, that is, between waiting
Away from arrangement, do not arrange in Practical Project or equidistantly.In vertical direction, the distance between adjacent radiation submatrix is
Fixed.That is equidistantly arrangement, is not arranged in Practical Project or equidistantly.Due to not departing from the design of the present invention,
Also it is within the scope of the present invention.
To sum up, presently preferred embodiments of the present invention is these are only, is not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvements made etc., the protection of the present invention should be included in
Within the scope of.
Claims (5)
1. a kind of Dual-band dual-polarization quickly falls rectangle transmission distance antenna, it is characterised in that：Including：Aerial radiation front
And feeding network (1)；
The aerial radiation front (1) includes N × N number of radiating element, and N number of radiating element of horizontal direction forms one group of radiator
Battle array, N are the integer not less than 2；The adjacent radiating element spacing is identical in horizontal direction, is designated as dx；Institute on vertical direction
It is identical to state radiation submatrix spacing, is designated as dy；dx、dyIn the range of 0.4 times of center frequency wavelength~1.6 times center frequency wavelength；
The working frequency of the radiating element is in 1710MHz~2170MHz and 2300MHz~2690MHz band limits；
The feeding network includes：The horizontal power division network of 2N low frequency, the horizontal power division network of 2N high frequency, two low frequency vertical work(
Subnetwork and two frequency vertical power division networks；The corresponding horizontal power division network of two low frequencies of each radiation submatrix and two height
Frequently horizontal power division network；
Each radiating element includes two polarization ports, respectively+45 ° of polarization ports and -45 ° of polarization ports, two poles
Change port respectively one secondary Microwave Net of connection；
On+45 ° of polarization ports of the radiating element of same radiation submatrix, the first input port connection low frequency water of Microwave Net
Flat power division network A output port, the horizontal power division network A of the second input port connection high frequency of Microwave Net output port；
The input port connection low frequency vertical power division network A of the horizontal power division network A of low frequency output port, the horizontal work(of high frequency
Subnetwork A input port connection frequency vertical power division network A output port；The input of the low frequency vertical power division network A
Port, the input port connection combiner A of the frequency vertical power division network A；
On -45 ° of polarization ports of the radiating element of same radiation submatrix, the first input port connection low frequency water of Microwave Net
Flat power division network B output port, the horizontal power division network B of the second input port connection high frequency of Microwave Net output port；
The input port connection low frequency vertical power division network B of the horizontal power division network B of low frequency output port, the horizontal work(of high frequency
Subnetwork B input port connection frequency vertical power division network B output port；The output of the low frequency vertical power division network B
Port, the output port link road combiner B of the frequency vertical power division network B.
2. a kind of Dual-band dual-polarization as claimed in claim 1 quickly falls rectangle transmission distance antenna, it is characterised in that：dx、
dyFor 0.5 times of center operating frequency wavelength.
3. a kind of Dual-band dual-polarization as claimed in claim 1 or 2 quickly falls rectangle transmission distance antenna, its feature exists
In：The radiation submatrix shares 8 groups.
4. a kind of Dual-band dual-polarization as claimed in claim 1 or 2 quickly falls rectangle transmission distance antenna, its feature exists
In：The radiating element is dual polarization crossed dipole antenna or dual polarization metal patch antenna.
5. a kind of Dual-band dual-polarization as claimed in claim 1 or 2 quickly falls rectangle transmission distance antenna, its feature exists
In：The Microwave Net is Wilkinson power divider or directional coupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710832632.8A CN107732465B (en) | 2017-09-15 | 2017-09-15 | Dual-band dual-polarization fast drop rectangular shaped array antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710832632.8A CN107732465B (en) | 2017-09-15 | 2017-09-15 | Dual-band dual-polarization fast drop rectangular shaped array antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107732465A true CN107732465A (en) | 2018-02-23 |
| CN107732465B CN107732465B (en) | 2020-04-21 |
Family
ID=61206303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710832632.8A Active CN107732465B (en) | 2017-09-15 | 2017-09-15 | Dual-band dual-polarization fast drop rectangular shaped array antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107732465B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108767494A (en) * | 2018-03-28 | 2018-11-06 | 北京空间飞行器总体设计部 | A kind of dual polarization rectangle figuration venue thinned array antenna |
| CN108832956A (en) * | 2018-06-29 | 2018-11-16 | 华为技术有限公司 | A kind of signal receiving/transmission device and antenna equipment |
| CN109273828A (en) * | 2018-09-29 | 2019-01-25 | 广东博纬通信科技有限公司 | A kind of miniaturization wideband rectangle transmission distance antenna |
| CN110071373A (en) * | 2018-03-12 | 2019-07-30 | 京信通信系统（中国）有限公司 | The antenna of multi-standard fusion |
| CN112103640A (en) * | 2019-06-17 | 2020-12-18 | 苏州速感智能科技有限公司 | Antenna array based on 5G millimeter wave base station and arrangement method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201408844Y (en) * | 2009-04-22 | 2010-02-17 | 中兴通讯股份有限公司 | Common-mode antenna device |
| EP1428294B1 (en) * | 2001-07-11 | 2011-10-05 | France Telecom | Reactive coupling antenna comprising two radiating elements |
| CN205004448U (en) * | 2015-10-23 | 2016-01-27 | 广东博纬通信科技有限公司 | Wide band array antenna |
-
2017
- 2017-09-15 CN CN201710832632.8A patent/CN107732465B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1428294B1 (en) * | 2001-07-11 | 2011-10-05 | France Telecom | Reactive coupling antenna comprising two radiating elements |
| CN201408844Y (en) * | 2009-04-22 | 2010-02-17 | 中兴通讯股份有限公司 | Common-mode antenna device |
| CN205004448U (en) * | 2015-10-23 | 2016-01-27 | 广东博纬通信科技有限公司 | Wide band array antenna |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110071373A (en) * | 2018-03-12 | 2019-07-30 | 京信通信系统（中国）有限公司 | The antenna of multi-standard fusion |
| CN108767494A (en) * | 2018-03-28 | 2018-11-06 | 北京空间飞行器总体设计部 | A kind of dual polarization rectangle figuration venue thinned array antenna |
| CN108832956A (en) * | 2018-06-29 | 2018-11-16 | 华为技术有限公司 | A kind of signal receiving/transmission device and antenna equipment |
| CN109273828A (en) * | 2018-09-29 | 2019-01-25 | 广东博纬通信科技有限公司 | A kind of miniaturization wideband rectangle transmission distance antenna |
| CN112103640A (en) * | 2019-06-17 | 2020-12-18 | 苏州速感智能科技有限公司 | Antenna array based on 5G millimeter wave base station and arrangement method thereof |
| CN112103640B (en) * | 2019-06-17 | 2022-09-27 | 苏州速感智能科技有限公司 | Antenna array based on 5G millimeter wave base station and arrangement method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107732465B (en) | 2020-04-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107732465A (en) | A kind of Dual-band dual-polarization quickly falls rectangle transmission distance antenna | |
| CN104103900B (en) | A kind of wideband dual polarized omnidirectional antenna of low section | |
| CN105356062B (en) | Broadband array antenna | |
| CN102570054B (en) | Monopolar 6-beam antenna used in mobile communication base station | |
| CN106571537A (en) | Bipolar two-beam low-side-lobe rapid-drop rectangular shaping array antenna | |
| CN103367932B (en) | A kind of two-beam antenna | |
| CN202474227U (en) | Dual-polarized tri-beam antenna for mobile communication base station | |
| CN106252901A (en) | Wideband three beam array antenna | |
| CN106159465B (en) | Five beam array antenna of wideband | |
| CN205004448U (en) | Wide band array antenna | |
| CN204424458U (en) | Dual polarization slotted guide antenna battle array | |
| CN206225561U (en) | A kind of big angle of declination antenna for base station of biserial | |
| CN112768885B (en) | Indoor distributed antenna | |
| CN106356618B (en) | Microwave high-frequency band dual-polarization small base station panel antenna | |
| CN106684574A (en) | 6-18GHz (gigahertz) ultra-wideband array antenna | |
| CN108666769A (en) | A kind of nine beam array antenna of wideband | |
| CN206619691U (en) | One kind miniaturization multi-port antenna array | |
| CN104518289A (en) | Dual-polarized slotted waveguide antenna array | |
| CN204834886U (en) | K wave band microstrip array antenna | |
| CN206322856U (en) | The beam array antenna of wideband three | |
| CN111697328A (en) | Series-fed microstrip antenna | |
| CN206628602U (en) | A kind of ultra-wideband dualbeam electrical tilt antenna | |
| CN207542390U (en) | A kind of three Mould Breadths band double-circle polarization microstrip antenna for being used for U wave band and S-band | |
| CN206322857U (en) | The beam array antenna of wideband five | |
| CN103594802B (en) | A kind of Butler matrix structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |