CN111541050B - Sum-difference dual-channel sidelobe suppression antenna - Google Patents
Sum-difference dual-channel sidelobe suppression antenna Download PDFInfo
- Publication number
- CN111541050B CN111541050B CN202010481111.4A CN202010481111A CN111541050B CN 111541050 B CN111541050 B CN 111541050B CN 202010481111 A CN202010481111 A CN 202010481111A CN 111541050 B CN111541050 B CN 111541050B
- Authority
- CN
- China
- Prior art keywords
- array
- antenna
- backward
- sum
- radio frequency
- 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.)
- Active
Links
Images
Classifications
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
-
- 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
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
- H01Q1/525—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas between emitting and receiving antennas
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a sum-difference dual-channel sidelobe suppression antenna, and relates to a passive array antenna for mechanical scanning. An array antenna capable of improving sidelobe suppression capability is provided. The invention is realized by the following technical scheme: the front array installation frame is provided with front array units which are arranged at equal intervals and two rear array units which are fixed in the rear array installation frame, and the front array units and the rear array units both adopt the same printed dipole antenna; the beam forming network is respectively connected with the feed interfaces of the forward array unit and the backward array unit through radio frequency cables, and is respectively connected with a sum channel interface and a difference channel interface which are positioned on the array antenna mounting base through the radio frequency cables, and simultaneously forms a sum beam and a difference beam; the sum channel interface and the difference channel interface respectively input radio frequency signals to form two kinds of amplitude and phase weighted distribution required by the forward array unit and the backward array unit; thereby realizing the full coverage of the difference channel signal pair and the channel signal side lobe.
Description
Technical Field
The invention relates to a passive array antenna for mechanical scanning, in particular to an array antenna technology for realizing sidelobe suppression by adopting a sum-difference dual-channel system.
Background
A Secondary Radar (SRR) is an electronic device that obtains target information by transmitting a signal and receiving a response signal. In secondary radar systems, sidelobe interference exists. To eliminate the sidelobe interference, the mechanically scanned array antenna of the secondary radar system is usually designed as a sum and difference two-channel antenna or a sum, difference and sidelobe suppression three-channel antenna. The sum and difference dual-channel antenna scheme only needs to form sum and difference dual-beams, needs sum and difference channels, and adopts the difference channel to carry out side lobe suppression on the sum channel. This solution requires two channels of rotary joints, two radio frequency cables and two receivers for processing. And the sum, difference and sidelobe suppression three-channel antenna scheme needs to form a sidelobe suppression beam on the basis of forming the sum and difference beams, needs to perform sum, difference and sidelobe suppression on three channels, and performs sidelobe suppression on the sum channel by adopting the sidelobe suppression channel. The scheme needs three channels of rotary joints or the inside of an antenna to be added with a radio frequency switch and three radio frequency cables, and simultaneously needs three receivers to process.
The document "a secondary radar antenna (SSR) antenna with integrated difference and sidelillo suppression (SLS) channel", published in 1996 by m.j.blefko et al (IEEE Antennas and Propagation Society International Symposium), reports a secondary radar antenna using a difference channel for side lobe suppression of a sum channel. From the literature results, the coverage of the side lobe of the difference channel pair sum channel signal can be realized in the range of pitching-1 degrees to +30 degrees and azimuth-60 degrees to +60 degrees (namely 120 degrees), but the full coverage of the side lobe of the difference channel pair sum channel signal can not be realized in the range of azimuth 360 degrees. For the sum and difference dual-channel antenna schemes, the literature (wang wave, telecommunication technology, 2013, 53 (4): 425-428) discloses a new scheme for suppressing side lobe in the interrogation of a secondary radar system, and a place where the side lobe of the sum (Σ) channel signal is higher than the level of the difference (Δ) channel signal in the sum (Σ) and difference (Δ) dual-channel antenna patterns is called a puncture point. The existence of the puncture point triggers the false response of the transponder, so that the transponder occupies the space, and the identification performance and the anti-interference capability of the system are influenced. It is difficult for the interrogating antenna to achieve full coverage of the poor channel pair and the channel side lobes. The requirement of the difference channel pair and the channel coverage rate of the interrogation antenna of the foreign active equipment is not increased by 100 percent, and the typical design requirement values are more than 95 percent, 98 percent and the like.
For a sum, difference and sidelobe suppression three-channel antenna scheme, two methods for forming sidelobe suppression beams are mentioned in a book 'secondary radar' (zhuyu major, national defense industry publishing agency, 2007). In the first method, sum beams and side lobe suppression beams can be respectively formed by feeding the same antenna array through different feeding networks. The advantages are that: the phase centers of the generated sum beam and the sidelobe suppression beam are the same, and the influence of the change of the vertical directional pattern caused by ground reflection on the two beams is the same. The disadvantages are that: the side lobe suppression channel rotating joint needs to be added or a radio frequency switch is added in the antenna, and meanwhile, the side lobe suppression beam hardly covers the side lobe of the sum beam in the range in the +/-90-degree direction of the two sides of the beam axis. And in the second method, the independent omnidirectional antenna is used for forming the sidelobe suppression beam, so that all the sidelobes of the sum beam can be well covered. The disadvantages are that: if the omni-directional antenna is mounted on top of the array antenna, the phase centers of the sum beam and the sidelobe suppression beam may be separated; if the omnidirectional antenna and the array antenna are arranged side by side, the omnidirectional antenna and the array antenna can form a mutual shielding.
In summary, by adopting the sum-difference dual-channel system array antenna, the full coverage of the sum channel to the side lobe of the sum channel signal cannot be realized within the working frequency band and in the range of 360 degrees in the azimuth at present; the sum, difference and side lobe suppression three-channel system array antenna is adopted, the complexity of equipment is increased, three-channel rotary joints or radio frequency switches and three radio frequency cables are required to be added in the antenna, three receivers are required to process the antenna, and the problem of difficulty in implementation exists in practical application.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, make up the defects of the prior sidelobe suppression technology and provide an array antenna with a sum-difference dual-channel system, which can improve sidelobe suppression capability.
The above object of the present invention can be achieved by the following means. In view of the above object, the present invention provides a sum-difference dual-channel sidelobe canceling antenna, including: support array antenna mounting base 2 of antenna house 1, fix the backward array unit 11 on the forward array unit 4 and the backward array mounting frame 5 on the forward array mounting frame 3 in antenna house 1 to and the beam forming network 10 of the forward array unit 4 of connection and backward array unit 11 through the radio frequency cable, its characterized in that: at least 8 forward array units 4 arranged at equal intervals on the forward array mounting frame 3 and at least 2 backward array units 11 fixed in the backward array mounting frame 5; the forward array unit 4 and the backward array unit 11 adopt the same printed dipole antenna; the beam forming network 10 is respectively connected with the feed interfaces 6 of the forward array unit 4 and the backward array unit 11 through radio frequency cables, and is respectively connected with the sum channel interface 8 and the difference channel interface 9 which are positioned on the array antenna mounting base 2 through the radio frequency cables, and simultaneously forms sum beams and difference beams; when the sum channel interface 8 inputs radio frequency signals, first amplitude and phase weighted distribution required by the forward array unit 4 and the backward array unit 11 is formed; when the difference channel interface 9 inputs radio frequency signals, second amplitude and phase weighted distribution required by the forward array unit 4 and the backward array unit 11 is formed; therefore, the sum-difference dual-channel sidelobe suppression array antenna with the difference channel signal pair and the sum channel signal sidelobe full coverage is realized.
Compared with the prior art, the invention has the following beneficial effects:
the invention adopts the sum-difference dual-channel sidelobe suppression antenna which is composed of 8 forward array units 4 which are fixed on a forward array installation frame 3 in an antenna cover 1 and are arranged at equal intervals, 2 backward array units 11 which are fixed on a backward array installation frame 5 and a beam forming network 10 which is connected with the forward array units 4 and the backward array units 11 through radio frequency cables, solves the problem that the traditional sum-difference dual-channel system array antenna can not realize the full coverage of the sum channel sidelobe of a difference channel within a working frequency band and in a range of 360 degrees in azimuth, and overcomes the problems that the equipment of the sum-difference and sidelobe suppression three-channel system array antenna is high in complexity, high in cost and difficult to realize in practical application.
The array antenna adopts a sum-difference dual-channel system, the relative bandwidth in a working frequency band is more than or equal to 13 percent, the full coverage of a difference beam pair and a beam side lobe can be realized in the ranges of a pitch angle of-30 degrees to +30 degrees and a direction of 360 degrees, namely the difference beam signal electric average ratio and the beam side lobe signal level are high outside a sum beam main lobe, and the coverage rate reaches 100 percent. And the difference beam signal level is at least 3dB greater than the sum channel side lobe signal level at each respective angle. Meanwhile, compared with the array antenna of the traditional sum and difference dual-channel system with the same antenna aperture, the sum beam performance of the invention is not reduced, namely the sum beam gain is not reduced, and the beam width of the sum beam is not widened.
Compared with a sum, difference and sidelobe suppression three-channel antenna scheme, the invention only needs to form a sum beam and a difference beam and does not need to form a sidelobe suppression beam; only a sum channel and a difference channel are formed, and a side lobe suppression channel is not required to be added; only two-channel rotary joints are needed, and three-channel rotary joints or radio frequency switches are not needed to be added in the antenna; only two receivers are required for processing and no three receivers are required for processing. Therefore, the complexity and the design difficulty of the device can be reduced, the cost is reduced, and the reliability of the antenna is improved.
The invention can be widely applied to the field of radar antenna sidelobe suppression, in particular to the field of secondary radar system antennas, such as air traffic control and friend or foe identification.
Drawings
FIG. 1 is a three-dimensional profile of a sum and difference dual channel sidelobe canceling antenna of the present invention;
FIG. 2 is a front three-dimensional block diagram of the sum two-channel sidelobe canceling antenna of FIG. 1 with the radome concealed;
FIG. 3 is a rear three-dimensional block diagram of FIG. 2;
FIG. 4 is a top view block diagram of FIG. 3;
FIG. 5 is a graph of amplitude and phase weighting profiles during beamforming and beamforming in accordance with the present invention;
FIG. 6 is a graph of amplitude and phase weighting for a difference beam formed by the beamforming network of the present invention;
FIG. 7 is a diagram of a sum and difference dual channel sidelobe canceling antenna of the present invention operating at a low frequency fLA temporal far-field azimuth plane and difference directional diagram;
FIG. 8 is a diagram of a sum and difference dual channel sidelobe canceling antenna of the present invention operating at a center frequency f0A temporal far-field azimuth plane and difference directional diagram;
FIG. 9 is a diagram of a sum and difference dual channel sidelobe canceling antenna of the present invention operating at high frequency fHFar field azimuth plane of timeAnd a difference pattern.
In the figure: 1 antenna house, 2 array antenna mounting base, 3 forward array installation frames, 4 forward array units, 5 backward array installation frames, 6 feed interface, 7 triangle reinforcing plates, 8 and channel interface, 9 poor channel interface, 10 beam forming network, 11 backward array units.
Detailed Description
See fig. 1, 2 and 3. In an embodiment described below, a sum and difference dual channel sidelobe canceling antenna includes: support array antenna mounting base 2 of antenna house 1, fix the backward array unit 11 on the forward array unit 4 and the backward array mounting frame 5 on the forward array mounting frame 3 in antenna house 1 to and the beam forming network 10 of the forward array unit 4 of connection and backward array unit 11 through the radio frequency cable, its characterized in that: at least 8 forward array units 4 arranged at equal intervals on the forward array mounting frame 3 and at least 2 backward array units 11 fixed in the backward array mounting frame 5; the forward array unit 4 and the backward array unit 11 adopt the same printed dipole antenna; the beam forming network 10 is respectively connected with the feed interfaces 6 of the forward array unit 4 and the backward array unit 11 through radio frequency cables, and is respectively connected with the sum channel interface 8 and the difference channel interface 9 which are positioned on the array antenna mounting base 2 through the radio frequency cables, and simultaneously forms sum beams and difference beams; when the sum channel interface 8 inputs radio frequency signals, first amplitude and phase weighted distribution required by the forward array unit 4 and the backward array unit 11 is formed; when the difference channel interface 9 inputs radio frequency signals, second amplitude and phase weighted distribution required by the forward array unit 4 and the backward array unit 11 is formed; therefore, the sum-difference dual-channel sidelobe suppression array antenna with the difference channel signal pair and the sum channel signal sidelobe full coverage is realized.
See fig. 4. The trapezoidal support on the disc base forms an array antenna mounting base 2. A forward array mounting frame 3 and a backward array mounting frame 5 are fixedly mounted on the array antenna mounting base 2. The 8 forward array units 4 are arranged on the forward web plate of the forward array mounting frame 3 at equal intervals by adopting printed dipole antennas, and the interval of each forward array unit 4 is 0.71 wavelength of low frequency. Each front partThe array elements 4 are all fed through SMA type feed interfaces 6. Triangular reinforcing plates 7 which are distributed at equal intervals are fixed on the plate surface of the backward web plate of the forward array mounting frame 3. The 2 backward array units 11 are arranged on the backward web of the backward array mounting frame 5 by using the same printed element antenna as the forward array unit 4, and the distance is 0.47 wavelength of low frequency. Each backward array element 11 is fed through an SMA type feed interface 6. The backward array unit 11 is fixed to the middle of the array antenna mounting base 2. The 8 forward array units 4 are numbered from left to right as Ant in sequence1～Ant8(ii) a The 2 backward array units 11 are numbered from right to left as Ant in sequence9～Ant10. The sum channel interface 8 and the difference channel interface 9 are fixed on the platform of the array antenna mounting base 2 by adopting N-N type connectors and are respectively positioned at two sides of the backward array unit 11.
The array antenna mounting base 2 is mounted and fixed on a servo mechanism and supports the whole antenna so as to realize mechanical scanning of the antenna. An antenna cover 1 for protecting the internal circuit of the antenna is installed and fixed on an array antenna installation base 2, so that a forward antenna array, a backward antenna array, a beam forming network 10, a radio frequency cable and the like can not be exposed outside. Meanwhile, the shape of the antenna housing 1 is designed to be repaired, and when the array antenna is mechanically scanned, the effect of reducing wind resistance can be achieved.
The beam forming network 10 is fixed to the rear web of the forward array mounting frame 3, located between the forward array mounting frame 3 and the rear array mounting frame 5, and supported by the platform of the array antenna mounting base 2. The beam forming network 10 includes ports numbered respectively1～Port1212 SMA type radio frequency interfaces. 10 radio frequency interfaces of the beam forming network 10 are correspondingly connected with feed interfaces 6 of each unit of the forward antenna array and the backward antenna array through 10 same SMA-SMA radio frequency cables and are used for forming amplitude and phase weighting distribution required by the forward antenna array and the backward antenna array; the other 2 radio frequency interfaces of the beam forming network 10 are respectively and correspondingly connected with the sum channel interface 8 and the difference channel interface 9 of the array antenna mounting base 2 through 2 identical SMA-N radio frequency cables, and are used for forming sum beams and difference beams. The specific implementation is as follows, beam-formingThe network 10 interface is numbered Port1～Port8The 8 radio frequency interfaces and the forward antenna array are numbered Ant1～Ant8The feed interfaces 6 of the forward array units 4 are correspondingly connected one by one through 8 SMA-SMA radio frequency cables, namely portsiRadio frequency interface and AntiThe feed interface 6 of the forward array unit 4 corresponds to; the beamforming network 10 interface is numbered Port9～Port10The 2 radio frequency interfaces and the backward antenna array are numbered Ant9～Ant10The feed interfaces 6 of the backward array units 11 are correspondingly connected one by one through 2 SMA-SMA radio frequency cables, namely portsiRadio frequency interface and AntiThe feed interface 6 of the backward array unit 11 corresponds to; the beamforming network 10 interface is numbered Port11～Port12The 2 radio frequency interfaces are respectively and correspondingly connected with a sum channel interface 8 and a difference channel interface 9 of the array antenna mounting base 2 through 2 same SMA-N radio frequency cables.
See fig. 5-6. When the RF signal is input to the channel interface 8, the interface of the beam forming network 10 is numbered Port1～Port10Each rf interface outputs an amplitude weighting profile (W) as shown in fig. 5: 0.1064:0.3046:0.6864:1:1:0.6864:0.3046:0.1064:0:0, with phase weight distribution (deg): 0:0:0:0:0:0:0:0: 0; when the difference channel interface 9 inputs radio frequency signals, the interface of the beam forming network 10 is numbered as Port1～Port10Each rf interface outputs an amplitude weighting profile (W) as shown in fig. 6:
0.1064:0.3046:0.6864:1: 0.6864:0.3046:0.1064:0.3:0.3, with phase weight distribution (deg): 0:0:0:0:180:180:180:180:132:6. The two amplitude and phase weighted values are design nominal values, and a certain amount of error is allowed to exist in an object.
If the interrogation signal is received by the main lobe of the array antenna and the wave beam, the sum signal level extracted by the receiver is higher than the difference signal level, otherwise, the signal is regarded as the signal received by the side lobe of the array antenna and the wave beam, the receiver only responds to the main lobe interrogation signal according to the comparison value of the sum signal level and the difference signal level, and the side lobe interrogation signal is discarded. The place where the sum channel signal sidelobe is higher than the difference channel signal level is called the puncture point.The existence of the puncture point triggers the false response of the transponder, so that the transponder occupies the space, and the identification performance and the anti-interference capability of the system are influenced. FIGS. 7-9 illustrate the distribution of the sum and difference dual channel sidelobe canceling antenna of the present invention operating at low frequency fLCenter frequency f0High frequency fHTest values of far field azimuth and difference patterns. The operating band of the antenna is 13% or more. As can be seen from fig. 7 to 9, in the range of 360 ° in azimuth, the full coverage of the difference beam pair and the beam side lobe can be achieved, that is, the difference beam signal level is higher than the sum beam side lobe signal level outside the sum beam main lobe, and the coverage rate reaches 100%. And the difference beam signal level is at least 3dB greater than the sum channel side lobe signal level at each respective angle.
The foregoing description of the present invention is provided to enable those skilled in the art to make and use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, without the need for inventive faculty. Accordingly, the invention is not to be limited except as by the appended claims.
Claims (9)
1. A sum and difference dual channel sidelobe canceling antenna comprising: support array antenna mounting base (2) of antenna house (1), fix preceding array unit (4) on preceding array mounting frame (3) in antenna house (1) and backward array unit (11) on backward array mounting frame (5) to and through beam forming network (10) of the preceding array unit (4) of radio frequency cable connection and backward array unit (11), its characterized in that: at least 8 forward array units (4) arranged at equal intervals on the forward array mounting frame (3) and at least 2 backward array units (11) fixed in the backward array mounting frame (5); the forward array units (4) and the backward array units (11) adopt the same printed dipole antennas, 8 forward array units (4) are arranged on a forward web plate of the forward array mounting frame (3) at equal intervals by adopting the printed dipole antennas, the interval of each forward array unit (4) is 0.71 wavelength of low frequency, 2 backward array units (11) are arranged on a backward web plate of the backward array mounting frame 5 by adopting the printed dipole antennas which are the same as the forward array units (4), and the interval is 0.47 wavelength of the low frequency; the beam forming network (10) is respectively connected with the feed interfaces (6) of the forward array unit (4) and the backward array unit (11) through radio frequency cables, and is respectively connected with the sum channel interface (8) and the difference channel interface (9) which are positioned on the array antenna mounting base (2) through the radio frequency cables, and simultaneously forms sum beams and difference beams; when a radio frequency signal is input into the sum channel interface (8), a first amplitude and phase weighting distribution required by the forward array unit (4) and the backward array unit (11) is formed; when the difference channel interface (9) inputs radio frequency signals, second amplitude and phase weighted distribution required by the forward array unit (4) and the backward array unit (11) is formed; therefore, the sum-difference dual-channel sidelobe suppression array antenna with the difference channel signal pair and the sum channel signal sidelobe full coverage is realized.
2. The sum and difference dual channel sidelobe canceling antenna of claim 1, wherein: each forward array unit (4) is fed through an SMA type feed interface (6).
3. The sum and difference dual channel sidelobe canceling antenna of claim 1, wherein: the backward radiation array elements (11) are arranged on a backward web plate of the backward array installation frame (5) by adopting the same printed dipole antenna as the forward array units (4), the distance is 0.47 wavelength of low frequency, and each backward array unit (4) feeds power through the SMA type feed interface (6).
4. The sum and difference dual channel sidelobe canceling antenna of claim 1, wherein: be fixed with triangle reinforcing plate (7) that the equidistance distributes on the face of the backward web of preceding array installation frame (3), 8 of arranging on the preceding web are in proper order for Ant to array unit (4) from a left side to the right side in advance to array unit (4)1～Ant8(ii) a Two backward array units (11) on the backward web plate of the backward array mounting frame (5) are numbered from right to left as Ant in sequence9～Ant10。
5. The sum and difference dual channel sidelobe canceling antenna of claim 1, wherein: the backward array unit (11) is fixed in the middle of the array antenna mounting base (2), and the sum channel interface (8) and the difference channel interface (9) are connected and fixed on a platform of the array antenna mounting base (2) by adopting N-N type connectors and are respectively positioned on two sides of the backward array unit (11).
6. The sum and difference dual channel sidelobe canceling antenna of claim 1, wherein: the beam forming network (10) is fixed on a backward web plate of the forward array mounting frame (3), is positioned between the forward array mounting frame (3) and the backward array mounting frame (5), and is supported by a platform of the array antenna mounting base (2).
7. The sum and difference dual channel sidelobe canceling antenna of claim 1, wherein: the beam forming network (10) includes ports numbered respectively1～Port1212 SMA type radio frequency interfaces; 10 radio frequency interfaces of a beam forming network (10) are correspondingly connected with feed interfaces (6) of each array element of the forward antenna array and the backward antenna array through 10 same SMA-SMA radio frequency cables and are used for forming amplitude and phase weighted distribution required by the forward antenna array and the backward antenna array; the other 2 radio frequency interfaces of the beam forming network (10) are respectively and correspondingly connected with the sum channel interface (8) and the difference channel interface (9) of the array antenna mounting base (2) through 2 same SMA-N radio frequency cables, and are used for forming sum beams and difference beams.
8. The sum and difference dual channel sidelobe canceling antenna of claim 1, wherein: the interface number of the beam forming network (10) is Port1～Port8The 8 radio frequency interfaces and the forward antenna array are numbered Ant1～Ant8The feed interfaces (6) of the forward array units (4) are correspondingly connected one by one through 8 SMA-SMA radio frequency cables, namely portsiRadio frequency interface and AntiThe feed interfaces (6) of the forward array units (4) correspond to each other; the interface number of the beam forming network (10) is Port9～Port10The 2 radio frequency interfaces and the backward antenna array are numbered Ant9～Ant10The feed interfaces (6) of the backward array units (11) are connected in a one-to-one correspondence way through 2 SMA-SMA radio frequency cables, namely portsiRadio frequency interface and AntiThe feed interfaces (6) of the backward array units (11) correspond to each other; the interface number of the beam forming network (10) is Port11～Port12The 2 radio frequency interfaces are respectively and correspondingly connected with a sum channel interface (8) and a difference channel interface (9) of the array antenna mounting base (2) through 2 same SMA-N radio frequency cables.
9. The sum and difference dual channel sidelobe canceling antenna of claim 1, wherein: when the RF signal is input to the channel interface (8), the interface of the beam forming network (10) is numbered as Port1～Port10Each radio frequency interface outputs amplitude weighted distribution W: 0.1064:0.3046:0.6864:1:1:0.6864:0.3046:0.1064:0:0, phase weight distribution (deg): 0:0:0:0:0:0:0:0: 0; when the difference channel interface (9) inputs radio frequency signals, the interface number of the beam forming network (10) is Port1～Port10Each radio frequency interface corresponds to an output amplitude weighted distribution (W): 0.1064:0.3046:0.6864:1: 0.6864:0.3046:0.1064:0.3:0.3, phase weight distribution (deg): 0:0:0:0:180:180:180:180:132:6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010481111.4A CN111541050B (en) | 2020-05-31 | 2020-05-31 | Sum-difference dual-channel sidelobe suppression antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010481111.4A CN111541050B (en) | 2020-05-31 | 2020-05-31 | Sum-difference dual-channel sidelobe suppression antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111541050A CN111541050A (en) | 2020-08-14 |
| CN111541050B true CN111541050B (en) | 2021-04-06 |
Family
ID=71979588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010481111.4A Active CN111541050B (en) | 2020-05-31 | 2020-05-31 | Sum-difference dual-channel sidelobe suppression antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111541050B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113691479B (en) * | 2021-07-15 | 2023-05-23 | 中国电子科技集团公司第二十九研究所 | Method and device for eliminating side lobe influence of signal and readable storage medium |
| CN114361814B (en) * | 2022-01-18 | 2023-06-20 | 中国电子科技集团公司第十研究所 | Phased array antenna containing sidelobe suppression wave beam, system and use method thereof |
| CN114361815B (en) * | 2022-01-18 | 2023-06-16 | 中国电子科技集团公司第十研究所 | Use method of sum-difference double-channel sidelobe suppression phased array antenna system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4283729A (en) * | 1979-12-26 | 1981-08-11 | Texas Instruments Incorporated | Multiple beam antenna feed |
| CN103558594A (en) * | 2013-10-28 | 2014-02-05 | 四川九洲空管科技有限责任公司 | Phased array beamforming method based on airborne equipment |
| CN107565227A (en) * | 2017-07-27 | 2018-01-09 | 中国船舶重工集团公司第七二四研究所 | A kind of low sidelobe antenna air strip line and poor power division network |
| CN108051782A (en) * | 2017-11-22 | 2018-05-18 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Extensive phased array difference beam based on Subarray partition forms system |
| CN108598717A (en) * | 2017-12-30 | 2018-09-28 | 中国船舶重工集团公司第七二三研究所 | A kind of array antenna of wide band printed and poor power division network feed |
| CN110581342A (en) * | 2019-09-11 | 2019-12-17 | 安徽隼波科技有限公司 | High-integration integrated efficient sum-difference beam waveguide antenna |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101587188A (en) * | 2008-05-22 | 2009-11-25 | 电子科技大学 | Monopulse radar system based on time modulation antenna array |
-
2020
- 2020-05-31 CN CN202010481111.4A patent/CN111541050B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4283729A (en) * | 1979-12-26 | 1981-08-11 | Texas Instruments Incorporated | Multiple beam antenna feed |
| CN103558594A (en) * | 2013-10-28 | 2014-02-05 | 四川九洲空管科技有限责任公司 | Phased array beamforming method based on airborne equipment |
| CN107565227A (en) * | 2017-07-27 | 2018-01-09 | 中国船舶重工集团公司第七二四研究所 | A kind of low sidelobe antenna air strip line and poor power division network |
| CN108051782A (en) * | 2017-11-22 | 2018-05-18 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Extensive phased array difference beam based on Subarray partition forms system |
| CN108598717A (en) * | 2017-12-30 | 2018-09-28 | 中国船舶重工集团公司第七二三研究所 | A kind of array antenna of wide band printed and poor power division network feed |
| CN110581342A (en) * | 2019-09-11 | 2019-12-17 | 安徽隼波科技有限公司 | High-integration integrated efficient sum-difference beam waveguide antenna |
Non-Patent Citations (1)
| Title |
|---|
| 《一种二次雷达大垂直口径天线的电讯设计》;汪旭东;《数字通信世界》;20170131;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111541050A (en) | 2020-08-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111541050B (en) | Sum-difference dual-channel sidelobe suppression antenna | |
| CN111246496B (en) | Beam tracking covering and enhancing method based on intelligent reflection surface | |
| EP0818059B1 (en) | Wide antenna lobe | |
| US7283844B2 (en) | Multi-beam antenna wireless network system | |
| KR100871432B1 (en) | Low altitude radar antenna | |
| CN105589058B (en) | A kind of antenna assembly and three-dimensional radar system | |
| CN113064173A (en) | Spherical dual-polarization phased array weather radar | |
| CN113381169B (en) | Antenna and radar system | |
| WO2023051240A1 (en) | Antenna module, millimeter wave radar, and vehicle | |
| CN112986921A (en) | Side lobe suppression method of broadband digital receiving array | |
| CN103326133A (en) | Mesh-network-based integral complete coverage phased-array antenna | |
| EP3292636B1 (en) | Transmit device and method thereof | |
| CN212062682U (en) | Microstrip antenna | |
| CN210123797U (en) | Antenna array | |
| JP2012122801A (en) | Antenna for radar, and radar device | |
| CN217561727U (en) | Radar and unmanned aerial vehicle | |
| US10454183B1 (en) | Multi-tile AESA systems and methods | |
| US10663576B2 (en) | Method for controlling transmission of an electronically steerable antenna system and such electronically steerable antenna system | |
| CN114361814B (en) | Phased array antenna containing sidelobe suppression wave beam, system and use method thereof | |
| CN113471717A (en) | Antenna module and radar | |
| Nasr et al. | Active Windshield Antenna for 5G Applications | |
| KR101833038B1 (en) | A vehicle radar antenna system for preventing collision | |
| CN114361815B (en) | Use method of sum-difference double-channel sidelobe suppression phased array antenna system | |
| CN114706043B (en) | Method for improving effective angle power by using digital beam deflection | |
| CN216793978U (en) | Millimeter wave radar antenna and millimeter wave radar |
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 |