CN109119769A - A kind of array antenna and its implementation for traffic information detection radar - Google Patents
A kind of array antenna and its implementation for traffic information detection radar Download PDFInfo
- Publication number
- CN109119769A CN109119769A CN201810917406.4A CN201810917406A CN109119769A CN 109119769 A CN109119769 A CN 109119769A CN 201810917406 A CN201810917406 A CN 201810917406A CN 109119769 A CN109119769 A CN 109119769A
- Authority
- CN
- China
- Prior art keywords
- network
- array
- array antenna
- micro
- traffic information
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
-
- 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
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The present invention provides a kind of array antenna and its implementation for traffic information detection radar, which includes: patch array and function division into network；The patch array is connected with the function division at network；Wherein, the patch array includes: M+N-1 micro-strip linear array；Wherein, the function division includes: M+N-1 primary power division network and M secondary synthesis network at network；Wherein, M, N are natural number and 1 < M < N, N≤4.Provided by the present invention for the array antenna and its implementation of traffic information detection radar, its beam angle is narrower, avoid wave beam graing lobe, the optimal size of antenna is reached simultaneously, it is compact-sized, help to detect farther distance and reduce noise jamming, while radar is smaller to install or to integrate.
Description
Technical field
The present invention relates to Radar Technology field more particularly to a kind of array antenna for traffic information detection radar and its
Implementation method.
Background technique
The traffic radar of the prior art operates mainly in two frequency ranges of 24GHz and 77GHz.Fig. 1 is the radar of the prior art
The schematic diagram of antenna, as shown in Figure 1, existing traffic radar antenna includes M × N (M > 1, N >=1) for received array antenna
A array element { R11, R12... ..., RMN, receiving antenna one shares M receiving channel { R1, R2... ..., RM, each receiving channel pair
N number of array element is answered, each array element is one group of linear array, Rmn(1≤m≤M, 1≤n≤N) is n-th of array element of m-th of receiving channel.
Receiving channel azimuth plane beam angle are as follows:
Wherein, θ3dBFor receiving channel azimuth plane beam angle, λ is operation wavelength, and F is azimuth plane linear array number, and d is linear array
Spacing.
As it can be seen that radar antenna effective dimensions is bigger, field angle is narrower.Vehicle Detection radar installation site limited area,
Ask radar size as small as possible, while field angle is as narrow as possible to detect farther distance.
However, existing technology cannot guarantee antenna beam angle, antenna spacing and radar antenna size simultaneously, it cannot be fine
Ground meets the Installation And Test requirement of Vehicle Detection radar.
Summary of the invention
It is an object of the present invention to provide a kind of array antenna and its implementation for traffic information detection radar,
To solve the problems, such as while meet the composite request of radar detection precision and radar antenna size.
A kind of array antenna for traffic information detection radar provided by the invention, comprising: patch array and function division
At network；
The patch array is connected with the function division at network；
Wherein, the patch array includes: M+N-1 micro-strip linear array；
Wherein, the function division includes: M+N-1 primary power division network and M secondary synthesis network at network；
Wherein, M, N are natural number and 1 < M < N, N≤4.
Further, the array antenna of the present invention for traffic information detection radar, each primary function subnetting
Network is equipped with an input terminal and N number of output end, and each micro-strip linear array connects the input terminal of a primary power division network,
Each it is divided into N number of secondary signal by the primary power division network from the input signal of the micro-strip linear array.
Further, the array antenna of the present invention for traffic information detection radar, each secondary polymer fabric
Network is equipped with N number of input terminal and an output end, the N number of primary function of N number of input terminal connection of each secondary synthesis network
Subnetwork, N number of secondary signal from the different micro-strip linear arrays is by the secondary synthesis network to signal energy
An output signal is synthesized after amount weighting.
Further, the array antenna of the present invention for traffic information detection radar, each secondary polymer fabric
The output end of network connects a receiving channel.
Further, the array antenna of the present invention for traffic information detection radar, the M+N-1 micro-strip linear arrays
Adjacent spaces be half-wavelength between one times of wavelength.
Further, the array antenna of the present invention for traffic information detection radar, further includes: first substrate, on
Layer conductive ground layer, the second substrate, underlying conductive ground plane and third substrate；
Wherein, the micro-strip linear array, the first substrate, the Upper conductive ground plane, the second substrate, it is described under
Layer conductive ground layer, the third substrate and the function division are successively sequentially arranged at network.
A kind of implementation method of array antenna for traffic information detection radar provided by the invention, the implementation method
Applied to array antenna of the present invention, the implementation method includes:
Primary distribution will be carried out at network by function division from the input signal of M+N-1 micro-strip linear array；
The secondary signal obtained after primary distribution is carried out the weighting of secondary signal energy at network by the function division to close
At；
Output signal after the weighting synthesis of secondary signal energy is sent to M receiving channel.
Further, implementation method of the present invention, the function division include: M+N-1 primary power division network at network
With M secondary synthesis network；
The primary distribution include: by each input signal by the primary power division network be assigned as it is N number of described in
Secondary signal；
The secondary signal energy weighting synthesis includes: that will pass through institute from the secondary signal of N number of different micro-strip linear arrays
It states secondary synthesis network progress secondary signal energy weighting and synthesizes an output signal.
A kind of array antenna and its implementation for traffic information detection radar provided by the invention, by micro-strip linear array
Signal distributes network and secondary synthesis network by primary, is reassembled into M slave antenna array.Compared with prior art, increase
Antenna effective aperture, beam angle is narrower, avoid wave beam graing lobe, while having reached the optimal size of antenna.Of the invention
Array antenna channel gain is high, wave beam is narrow, compact-sized, helps to detect farther distance and reduces noise jamming, while radar
It is smaller to install or to integrate.The use planar structure of array antenna of the present invention, can be integrated with radio frequency microwave circuit plate, knot
Structure is simple, and debugging is convenient.
Detailed description of the invention
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, of the invention other
Feature, objects and advantages will become more apparent upon:
Fig. 1 is the schematic diagram of the radar antenna of the prior art；
Fig. 2 is the structural schematic diagram of the array antenna for traffic information detection radar of the embodiment of the present invention；
Fig. 3 is the schematic illustration of the array antenna for traffic information detection radar of the embodiment of the present invention；
Fig. 4 is the positive structure schematic of the array antenna of the embodiment of the present invention；
Fig. 5 is the structure schematic diagram of the array antenna of the embodiment of the present invention；
Fig. 6 is the side, sectional structural schematic diagram of the array antenna of the embodiment of the present invention；
Fig. 7 is the face array antenna E and the H side gains directional diagram of the embodiment of the present invention.
The same or similar appended drawing reference represents the same or similar component in attached drawing.
Description of symbols: 1- patch array, 11- micro-strip linear array, 111- chip unit A, 112- chip unit B, 113-
Chip unit C, 114- chip unit D, 2- function division synthesizes network, 211- not at network, 21- primary power division network, 22- grade
Power splitters H, 23- isolation resistances such as power splitters G, the 222- such as power splitters F, the 221- such as equal power splitters E, 212-, 24- matched load,
3- receiving channel, 41- first substrate, 42- Upper conductive ground plane, 43- the second substrate, 44- underlying conductive ground plane, 45-
Three substrates, 51- coaxial feed, 52- via hole, 53- microstrip line adjust minor matters.
Specific embodiment
Present invention is further described in detail with reference to the accompanying drawing.
Fig. 2 is the structural schematic diagram of the array antenna for traffic information detection radar of the embodiment of the present invention, such as Fig. 2 institute
Show, the array antenna for traffic information detection radar of the embodiment of the present invention, comprising: patch array 1 and function division are at network
2；
The patch array 1 is connected with the function division at network 2；
Wherein, the patch array 1 includes: M+N-1 micro-strip linear array 11；
Wherein, the function division includes: M+N-1 primary power division network 21 and M secondary synthesis network 22 at network 2；
Wherein, M, N are natural number and 1 < M < N, N≤4.
Specifically, the micro-strip linear array 11 in patch array 1 is connected with function division at the primary power division network 21 in network 2
It connects, primary power division network 21 is connect with secondary synthesis network 22.Array antenna is 24GHz, but the present invention is not limited thereto.It connects
After the primary distribution of primary power division network 21 of the collection of letters number through being connected directly with micro-strip linear array, pass through the secondary synthesis for synthesizing network 22
Reach the weighting to signal energy, then respectively enters multiple receiving channels 3.Microstrip power divider can be used at network 2 in function division
Structure comprising multiple one-to-two constant power distributors and unequal power divider.
The array antenna of the embodiment of the present invention, it is existing shown in azimuth plane linear array number F, linear array spacing d and Fig. 1 if operation wavelength λ
There is the array antenna of technology identical.Then calculated according to the calculation formula of receiving channel azimuth plane beam angle:
It is found that compared with the array antenna of the array antenna of embodiment of the present invention prior art shown in Fig. 1, receiving channel side
Plane beam angle θ3dBBe it is equal, i.e., field angle is equal.But the size of the array antenna of the embodiment of the present invention is (M
+ N-2) × d, and the size of the array antenna of the prior art shown in Fig. 1 is (M × N-1) × d.As it can be seen that the situation larger in M, N
Under, the size of the array antenna of present example is far smaller than the size of the array antenna of the prior art shown in Fig. 1.The present invention is real
The array antenna of example is compared with the array antenna of the prior art, and wave beam is narrower, more compact structure, help to detect farther distance and
Noise jamming is reduced, while radar is smaller to install or to integrate, and meets traffic radar antenna higher precision and structure
More compact composite request.
Fig. 3 is the schematic illustration of the array antenna for traffic information detection radar of the embodiment of the present invention, such as Fig. 3 institute
Show, the array antenna of the embodiment of the present invention includes: M+N-1 micro-strip linear array 11 and X primary power division network 21.Wherein, X=M+
N-1.I.e. each micro-strip linear array 11 is corresponding with a primary power division network 21.The size of M+N-1 micro-strip linear array 11 is (M+N-
2) × d, d are linear array spacing.Each primary power division network 21 is equipped with an input terminal and N number of output end, each primary function
N number of output end of subnetwork 21 is marked as { R11, R12 ... ..., R1N }, and each micro-strip linear array 11 connects described in one
The input terminal of primary power division network 21, each from the input signal of the micro-strip linear array by the primary power division network 21
It is divided into N number of secondary signal, is exported respectively from N number of output end { R11, R12 ... ..., R1N }.The just sub-distribution of two sides micro-strip linear array 11
The prevention at radio-frequency port that power combing is had neither part nor lot in the road N signal afterwards connects matched load 24.
As shown in figure 3, each secondary synthesis network 22 is equipped with N number of input terminal and an output end, M secondary synthesis
The output end of network 22 is denoted as { R1, R2 ... ..., RM } respectively, the output end and receiving channel 3 of each secondary synthesis network 22
Connection.N number of input terminal of each secondary synthesis network 22 is connected from the input terminal of N number of different primary power division networks 21, comes from
N number of secondary signal, N number of secondary signal are converted to through primary power division network 21 in the input signal of N number of different micro-strip linear array 11
An output signal is synthesized after weighting using secondary synthesis network 22 to signal energy.
As shown in Fig. 2, the output end of each secondary synthesis network 22 connects a receiving channel 3, by output signal
It is sent into receiving channel 3.
Further, in order to improve gain, gain compensation is carried out in intermediate frequency, the gain of compensation is 10lg (N) decibel.
Further, the array antenna of the present invention for traffic information detection radar, the M+N-1 micro-strip linear arrays
Adjacent spaces be half-wavelength between one times of wavelength, can avoid generating graing lobe.
For example, aerial array includes 10 micro-strip linear arrays and 10 function divisions into network, linear array spacing d is 0.64 times of wave
Long, the input signal of each micro-strip linear array is divided into 3 secondary signals through primary power division network, finally closes through secondary synthesis network 2
At to 8 receiving channels 3, the corresponding receiver aperture of each receiving channel 3, each receiver aperture is 1.92 times of waves
Long, the synthesis of the input signal of corresponding 3 micro-strip linear arrays, entire aerial array effective length is 6.4 times of wavelength.
Fig. 4 is the positive structure schematic of the array antenna of the embodiment of the present invention, and Fig. 5 is the array day of the embodiment of the present invention
The structure schematic diagram of line, as shown in figure 4, being equipped with patch array 1 in array antenna front.Wherein, patch array 1 is by 10
Micro-strip linear array 11 forms.Each micro-strip linear array 11 includes: at least two chip units (111~114).Specifically, each
Micro-strip linear array includes 8 chip units, i.e. chip unit A (111), chip unit B (112), chip unit C (113), patch
Cells D (114) and with its along middle part be in mirror-symmetrical remaining 4 chip units, each chip unit spacing be 6.80mm.Patch
The length of blade unit D (114) is 3.25mm, width 4.60mm.The length of chip unit C (113) is 3.25mm, and width is
4.20mm.The length of chip unit B (112) is 3.05mm, width 3.40mm.The length of chip unit A (111) is
3.20mm, width 1.80mm.Microstrip feed line width is 0.15mm, and micro-strip linear array passes through the function division of coaxial feed 51 and the back side
It is connected at network 2, port match and phase adjust minor matters 53 by via hole 52 and microstrip line and realize to adjust.
Fig. 5 is the structure schematic diagram of the array antenna of the embodiment of the present invention, as shown in figure 5, the array antenna back side is set
Active division is at network 2.Each function division includes: that at least two constant power distributors and at least two differ at network 2
Power divider, every level-one power divider structure form are identical.In the present embodiment, primary power division network 21 is by not equal power splitters E
(211) with equal power splitters F (212) composition, secondary synthesis network 22 is by equal power splitters G (221) and power splitters H (222) is waited to form.
The function division is made of at network 10 primary power division networks and 8 secondary synthesis networks.The isolation resistance 23 of power splitter is
100 ohm.
10 primary power division network 21 and 10 micro-strip linear arrays 11 are correspondingly connected with, each from the input of micro-strip linear array 11
Signal divides by primary power division network 21 for 3 road secondary signals.Secondary signal after primary distribution is defeated through secondary synthesis network 21
Enter to 8 receiving channels 3.Corresponding 3 tunnels received after the primary distribution of the different micro-strip linear arrays 11 of a routing 3 of each receiving channel 3
The output signal of energy synthesis.The prevention at radio-frequency port for having neither part nor lot in power combing after two sides micro-strip linear array is distributed for the first time connects matched load
24。
Fig. 6 is the side, sectional structural schematic diagram of the array antenna of the embodiment of the present invention, as shown in fig. 6, the present invention is implemented
The array antenna for traffic information detection radar of example, further includes: first substrate 41, Upper conductive ground plane 42, the second base
Plate 43, underlying conductive ground plane 44 and third substrate 45.
Wherein, the micro-strip linear array 11, the first substrate 41, the Upper conductive ground plane 42, the second substrate
43, successively sequence is arranged at network 2 for the underlying conductive ground plane 44, the third substrate 45 and the function division.
Wherein, 4350 substrate of Rogers can be used in first substrate 41 and third substrate 45, and Rogers4350 substrate is the U.S.
One kind of Ross outstanding person's import plate, relative dielectric constant 3.48, with a thickness of 0.25mm.FR4 substrate can be used in the second substrate 43,
FR4 (epoxy glass cloth laminated board) substrate relative dielectric constant is 4.4, with a thickness of 0.50mm.
Fig. 7 is the face array antenna E and the H side gains directional diagram of the embodiment of the present invention, as shown in fig. 7, the face E 3dB wave beam is wide
13 degree of degree, 50 degree of the face H 3dB beam angle, channel gain 9dB.
The embodiment of the present invention also provides a kind of implementation method of array antenna for traffic information detection radar, the side
Method is applied to Fig. 2 of the present invention and array antenna shown in Fig. 3, and the implementation method includes:
Primary distribution will be carried out at network 2 by function division from the input signal of M+N-1 micro-strip linear array 11；
The secondary signal obtained after primary distribution is subjected to the weighting synthesis of secondary signal energy at network 2 by function division；
Output signal after the weighting synthesis of secondary signal energy is sent to M receiving channel 3.
Further, the function division includes: M+N-1 primary power division network 21 and M secondary synthesis network at network 2
22；
The primary distribution includes: that each input signal is assigned as N number of institute by the primary power division network 21
State secondary signal；
The secondary signal energy weighting synthesis includes: that will pass through from the secondary signal of N number of different micro-strip linear arrays 11
The secondary synthesis network 22 carries out the weighting of secondary signal energy and synthesizes an output signal.
Wherein, an input terminal of secondary synthesis network 22 is connect with an output end of primary power division network 21, secondary
N number of input terminal of synthesis network 22 is separately connected an output end of N number of different primary power division networks 21.
The implementation method of the array antenna of the embodiment of the present invention is the implementation method of Fig. 2 and array antenna shown in Fig. 3,
Concrete principle is identical as Fig. 2 and array antenna shown in Fig. 3, and details are not described herein again.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included in the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.This
Outside, it is clear that one word of " comprising " does not exclude other units or steps, and odd number is not excluded for plural number.That states in device claim is multiple
Unit or device can also be implemented through software or hardware by a unit or device.The first, the second equal words are used to table
Show title, and does not indicate any particular order.
Claims (8)
1. a kind of array antenna for traffic information detection radar characterized by comprising patch array and function division networking
Network；
The patch array is connected with the function division at network；
Wherein, the patch array includes: M+N-1 micro-strip linear array；
Wherein, the function division includes: M+N-1 primary power division network and M secondary synthesis network at network；
Wherein, M, N are natural number and 1 < M < N, N≤4.
2. the array antenna according to claim 1 for traffic information detection radar, which is characterized in that each described first
Grade power division network is equipped with an input terminal and N number of output end, and each micro-strip linear array connects the primary power division network
Input terminal, be each divided into N number of secondary signal by the primary power division network from the input signal of the micro-strip linear array.
3. the array antenna according to claim 2 for traffic information detection radar, which is characterized in that each described time
Grade synthesis network is equipped with N number of input terminal and an output end, and N number of input terminal of each secondary synthesis network connects N number of institute
Primary power division network is stated, N number of secondary signal from the different micro-strip linear arrays is by the secondary synthesis network
An output signal is synthesized after weighting to signal energy.
4. the array antenna according to claim 3 for traffic information detection radar, which is characterized in that each described time
The output end of grade synthesis network connects a receiving channel.
5. the array antenna according to claim 1 for traffic information detection radar, which is characterized in that M+N-1 institute
The adjacent spaces for stating micro-strip linear array are half-wavelength between one times of wavelength.
6. the array antenna according to any one of claim 1 to 5 for traffic information detection radar, feature exist
In, further includes: first substrate, Upper conductive ground plane, the second substrate, underlying conductive ground plane and third substrate；
Wherein, the micro-strip linear array, the first substrate, the Upper conductive ground plane, the second substrate, the lower layer lead
Electrically grounded layer, the third substrate and the function division are successively sequentially arranged at network.
7. a kind of implementation method of the array antenna for traffic information detection radar, which is characterized in that the implementation method is answered
For array antenna described in any one of claims 1 to 6, the implementation method includes:
Primary distribution will be carried out at network by function division from the input signal of M+N-1 micro-strip linear array；
The secondary signal obtained after primary distribution is subjected to the weighting synthesis of secondary signal energy at network by the function division；
Output signal after the weighting synthesis of secondary signal energy is sent to M receiving channel.
8. implementation method according to claim 7, which is characterized in that the function division includes: M+N-1 primary at network
Power division network and M secondary synthesis network；
The primary distribution includes: that each input signal is assigned as N number of secondary by the primary power division network
Signal；
The secondary signal energy weighting synthesis includes: that will pass through described time from the secondary signal of N number of different micro-strip linear arrays
Grade synthesis network carries out the weighting of secondary signal energy and synthesizes an output signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810917406.4A CN109119769A (en) | 2018-08-13 | 2018-08-13 | A kind of array antenna and its implementation for traffic information detection radar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810917406.4A CN109119769A (en) | 2018-08-13 | 2018-08-13 | A kind of array antenna and its implementation for traffic information detection radar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109119769A true CN109119769A (en) | 2019-01-01 |
Family
ID=64853271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810917406.4A Pending CN109119769A (en) | 2018-08-13 | 2018-08-13 | A kind of array antenna and its implementation for traffic information detection radar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109119769A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105356069A (en) * | 2015-11-28 | 2016-02-24 | 成都安智杰科技有限公司 | Method for improving unambiguous range of vehicle radar measurement angle and antenna structure |
| CN105428823A (en) * | 2015-12-25 | 2016-03-23 | 成都安智杰科技有限公司 | Receiving-transmitting multiplexing antenna structure applied to vehicle-mounted radar and implementation method thereof |
| CN105428800A (en) * | 2015-11-24 | 2016-03-23 | 大连楼兰科技股份有限公司 | Multi-beam integrated waveguide antenna use for on-board anti-collision radar |
| KR20160084880A (en) * | 2015-01-06 | 2016-07-15 | 블루웨이브텔(주) | Microstrip patch array radar antenna for heavy equipment vehicle |
| CN106602244A (en) * | 2016-12-09 | 2017-04-26 | 安徽四创电子股份有限公司 | Micro-strip array antenna |
-
2018
- 2018-08-13 CN CN201810917406.4A patent/CN109119769A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160084880A (en) * | 2015-01-06 | 2016-07-15 | 블루웨이브텔(주) | Microstrip patch array radar antenna for heavy equipment vehicle |
| CN105428800A (en) * | 2015-11-24 | 2016-03-23 | 大连楼兰科技股份有限公司 | Multi-beam integrated waveguide antenna use for on-board anti-collision radar |
| CN105356069A (en) * | 2015-11-28 | 2016-02-24 | 成都安智杰科技有限公司 | Method for improving unambiguous range of vehicle radar measurement angle and antenna structure |
| CN105428823A (en) * | 2015-12-25 | 2016-03-23 | 成都安智杰科技有限公司 | Receiving-transmitting multiplexing antenna structure applied to vehicle-mounted radar and implementation method thereof |
| CN106602244A (en) * | 2016-12-09 | 2017-04-26 | 安徽四创电子股份有限公司 | Micro-strip array antenna |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7068218B2 (en) | Calibration device for an antenna array, antenna array and methods for antenna array operation | |
| US6686885B1 (en) | Phased array antenna for space based radar | |
| CN110534923B (en) | Beam forming antenna structure and design method | |
| US20130127682A1 (en) | Modular Phased-Array Antenna | |
| US9899736B2 (en) | Low cost active antenna system | |
| WO2023039209A2 (en) | Dual/tri-band antenna array on a shared aperture | |
| Ibrahim et al. | Design and performance analysis of a miniature, dual-frequency, millimeter wave linear phased array antenna | |
| CN113594680A (en) | Circular polarization octave ultra-wideband antenna unit and array | |
| CN109088175A (en) | A kind of space exploration Vivaldi broad-band antenna array system | |
| CN109818145A (en) | A kind of the fluting circular patch antenna and array of vertical folding | |
| CN106443591B (en) | A kind of multi-functional submatrix beam-forming network of phased-array radar | |
| CN113113781A (en) | Active phased array antenna line is presented | |
| CN109119769A (en) | A kind of array antenna and its implementation for traffic information detection radar | |
| Priyadarshan et al. | Beam forming network using 4× 4 narrowband butler matrix for tracking and localization applications | |
| Tadayon et al. | A Wideband Non-Reciprocal Phased Array Antenna with Side Lobe Level Suppression | |
| Angelilli et al. | A family of secondary surveillance radars based on conformal antenna array geometries | |
| CN114709627B (en) | Multi-band configurable receiving antenna | |
| CN110635233A (en) | Low sidelobe lens array antenna for ETC system | |
| US20040235528A1 (en) | Overlapped subarray antenna feed network for wireless communication system phased array antenna | |
| Valkonen et al. | Analysis and design of mm-wave phased array antennas for 5G access | |
| Urzaiz et al. | Design of radio frequency subsystems of a ubiquitous radar in X band | |
| Yu et al. | A compact switched dual-beam antenna array with high gain | |
| CN104882680A (en) | Miniaturized multi-beam antenna array and combiner network connected therewith | |
| CN108598717A (en) | A kind of array antenna of wide band printed and poor power division network feed | |
| KR102198378B1 (en) | Switched beam-forming antenna device and manufacturing method thereof |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190101 |