CN114069234A - L-band power supply weighted low-sidelobe antenna array - Google Patents
L-band power supply weighted low-sidelobe antenna array Download PDFInfo
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- CN114069234A CN114069234A CN202111349128.5A CN202111349128A CN114069234A CN 114069234 A CN114069234 A CN 114069234A CN 202111349128 A CN202111349128 A CN 202111349128A CN 114069234 A CN114069234 A CN 114069234A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/2605—Array of radiating elements provided with a feedback control over the element weights, e.g. adaptive arrays
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
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- 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
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- 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
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- Radar Systems Or Details Thereof (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses an L-band power supply weighted low sidelobe antenna array, and belongs to the technical field of reconnaissance radars. The invention utilizes the L-band radar phased-array antenna amplitude weighting to form a low side lobe weighting parameter and a corresponding power supply voltage control parameter, controls the transmitting power of a transmitting and receiving component by controlling each path of output level of a power supply unit, forms a preset low side lobe antenna waveform in the air by the radiation of an antenna array antenna unit, and controls the power supply unit voltage on line to change the power by a digital controller, thereby forming an accurate and controllable space weighting amplitude parameter of the active array antenna, leading the antenna array to realize the low side lobe and waveform transformation effect, and enhancing the effect and the application flexibility of the L-band radar side lobe interference suppression.
Description
Technical Field
The invention relates to the technical field of reconnaissance radars, in particular to an L-band power supply weighted low sidelobe antenna array.
Background
Conventional antenna array low side lobe weighting often employs both amplitude weighting and phase weighting. The low side lobe index becomes the important performance of the antenna, most of the antenna side lobe weights are applied to a receiving antenna array, and the DBF digital beam forming mode is adopted for realizing the antenna side lobe weights. However, the current application of the transmit array weighting is mostly limited to an amplitude weighting method, and the method has low side lobe formation but large system loss; once the parameters are determined, online adjustment cannot be realized or the adjustment precision is low; if an attenuation mode is adopted, the power amplifier saturation output is influenced by the attenuation of the front stage, the signal amplitude is unstable due to the fact that the signal driving is easily influenced by the environment, the attenuation precision is reduced, the design difficulty of the attenuator is increased and decreased by the attenuation of the last stage, and the system loss is overlarge.
Disclosure of Invention
In view of this, the invention provides an L-band power-weighted low sidelobe antenna array, which can control the amplitude weighting of a transmitting antenna array on line, reduce the system loss, and be applied to ground low-altitude and ultra-low-altitude reconnaissance monitoring and reconnaissance monitoring of ground moving targets under the condition of tree bundle shielding.
The purpose of the invention is realized as follows:
an L-band power supply weighted low sidelobe antenna array comprises a power supply unit 1, transmitting and receiving components 2-1-2-N, antenna array antenna units 3-1-3-N and a digital controller 4;
the power supply unit 1 is provided with a plurality of paths of independent weighting control power supply outputs, the power supply outputs of the power supply unit 1 are correspondingly connected with the transmitting and receiving components 2-1-2-N one by one, and the transmitting and receiving components 2-1-2-N are correspondingly connected with the antenna array antenna units 3-1-3-N one by one;
the digital controller 4 controls the weighting parameters of each power output of the power supply unit 1 on line, thereby controlling the transmitting power of each transmitting and receiving component.
Further, the digital controller 4 outputs a weighting parameter to the power supply unit 1 in a serial interface or network interface program control manner, where the weighting parameter is used to control the voltage output by the power supply unit 1, and the voltage variation range is 9V to 36V.
Further, the transmitting and receiving components 2-1-2-N are used for realizing power amplification of transmitting signals of all channels and amplification, frequency conversion and control of received signals; meanwhile, the weighting control of the antenna array antenna units is realized; the transmitting power amplifier of the transmitting and receiving component adopts a gallium nitride power amplifier, and the peak transmitting power is 50W-800W; the gallium nitride power amplifier adopts grid voltage to control the saturated output power of the power amplifier, the control voltage range is 9V-36V, the control power attenuation range is-9 dB-0 dB, and the power control precision is 0.05 dB.
Compared with the background technology, the invention has the following advantages:
1. the power supply is adjusted to control the grid voltage of the power amplifier, so that the power output of the power amplifier can be adjusted in an online weighting manner, and the low side lobe weighting of the antenna array is realized.
2. The array is simple in implementation principle, output power is in a saturation state, and signal amplitude change caused by the environment cannot be caused.
3. The array has high adjustment precision, stable power amplifier work and no extra loss of the system.
4. The array can adjust control parameters according to needs, and flexibly realizes the adjustment of the shape of the transmitting beam and the sidelobe level.
5. When the transmitting and receiving assembly is replaced by the radar, online quick replacement can be realized, adjustment is not needed, and convenience, rapidness and easiness in replacement and maintenance are realized.
Drawings
Fig. 1 is an electrical schematic block diagram of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1, an L-band power-weighted low sidelobe antenna array includes the following parts: the antenna system comprises a power supply unit 1, a transmitting and receiving component 2-N, an antenna array antenna unit 3-1, an antenna array antenna unit 3-N and a digital controller 4;
the power supply unit 1 mainly provides power for the system, and comprises a power supply for the transmitting and receiving assembly; the power supply has multiple independent outputs for weighting control power supply, each output is respectively connected with the transmitting and receiving component 2-1 to the port 1 of the transmitting and receiving component 2-N to supply power for the transmitting and receiving component, and the power supply voltage and current can be adjusted and controlled on line according to requirements;
the transmitting and receiving components 2-1 to 2-N realize the power amplification of the transmitting signal of each channel and the amplification, frequency conversion and control of the receiving signal; meanwhile, the antenna array weighting control is realized; the transmitting signal output is connected with an antenna array antenna unit 3-1 to an antenna array antenna unit 3-N through a port 2 from a transmitting and receiving component 2-1 to a transmitting and receiving component 2-N;
the antenna array antenna units 3-1 to 3-N realize the directional radiation and directional reception of the transmitted signals; through the organic combination with the transmitting and receiving assembly 2-1 to the transmitting and receiving assembly 2-N, an active phased array is formed, radio frequency signals with weighting information are radiated, and a beam shape and a side lobe are formed in the air;
the digital controller 4 generates a control signal according to a preset parameter to realize the adjustment of each path of voltage of the power supply unit 1, so that the amplitude of power amplification of each channel from the transmitting and receiving component 2-1 to the transmitting and receiving component 2-N is changed, and a low-sidelobe transmitting waveform is formed in space by combining the antenna array antenna unit 3-1 to the antenna array antenna unit 3-N; meanwhile, the control parameters can be changed on line, and the online change of the shape of the transmitted waveform and the side lobe can be flexibly realized.
The following are more specific examples:
still referring to fig. 1, the L-band power-weighted low sidelobe antenna array is composed of a power supply unit 1, a transmitting and receiving component 2-1 to a transmitting and receiving component 2-N, an antenna array antenna unit 3-1 to an antenna array antenna unit 3-N, a digital controller 4 and the like.
Wherein, the output voltage of each weighted control power supply of the power supply unit 1 can be changed between 9V and 36V, the current is selected between 0.5A and 5A according to the requirement of transmitting power, and the number of the current is matched with the number N from the antenna array antenna unit 3-1, the antenna array antenna unit 3-2 to the antenna array antenna unit 3-N; the control of the power supply can be realized by program control of a serial interface and a network interface; in addition, the power supply also has the capacity of converting and outputting multi-channel and multi-channel power supplies, has safety measures such as leakage protection, short-circuit protection, overcurrent protection and the like, and has the functions of monitoring voltage and current and the like; according to the size of N, the power supply can be divided into sub power supply modules, and the maximum output circuit number of each sub power supply module is 16.
The number N of the transmitting and receiving components 2-1 to 2-N is matched with the number of the antenna units 3-1 to 3-N of the system antenna array; the emission power amplifier adopts a gallium nitride power amplifier, and the peak emission power is 50W-800W; the gallium nitride power amplifier circuit adopts grid voltage to control the saturation output power of the power amplifier, the control voltage range is 9V-36V, the control power attenuation range is-9 dB-0 dB, and the power control precision is 0.05 dB.
The working frequency range of the antenna array antenna units 3-1 to 3-N is in the L frequency range; the number of units is 8-256; the antenna form is a one-dimensional phased array form or a two-dimensional phased array form. The number of the units in the embodiment of the invention is 16, and the form is a one-dimensional array form.
The digital controller 4 is realized by adopting an FPGA, a DSP or a singlechip and the like, and a control port of the digital controller can be realized by adopting a parallel port, a serial port or a network port.
The invention is briefly based on the following principle: the method utilizes the principle that the L-band radar phased-array antenna amplitude is weighted to form low-sidelobe beams, and forms accurate and controllable space weighted amplitude parameters of the active array antenna by controlling the amplitude of a power supply of each transmitting and receiving assembly and changing the output power of the transmitting and receiving assembly, so that the antenna array realizes a low-sidelobe effect, and the effect of L-band radar sidelobe interference suppression is enhanced.
In a word, the invention utilizes the amplitude weighting of the L-band radar phased-array antenna to form a low sidelobe weighting parameter and a corresponding power supply voltage control parameter, controls the transmitting power of a transmitting and receiving component by controlling the output level of each path of the power supply unit, forms a preset low sidelobe antenna waveform in the air by the radiation of the antenna array antenna unit, and controls the voltage of the power supply unit to change the power on line by the digital controller, thereby forming an accurate and controllable space weighting amplitude parameter of the active array antenna, leading the antenna array to realize the low sidelobe and waveform transformation effect, and enhancing the interference suppression effect and application flexibility of the L-band radar sidelobe.
Claims (3)
1. An L-band power supply weighted low sidelobe antenna array is characterized by comprising a power supply unit (1), transmitting and receiving components (2-1-2-N), antenna array antenna units (3-1-3-N) and a digital controller (4);
the power supply unit (1) is provided with multiple paths of independent weighting control power supply outputs, the power supply outputs of the power supply unit (1) are correspondingly connected with the transmitting and receiving components (2-1-2-N) one by one, and the transmitting and receiving components (2-1-2-N) are correspondingly connected with the antenna array antenna units (3-1-3-N) one by one;
the digital controller (4) controls the weighting parameters of each path of power output of the power supply unit (1) on line, thereby controlling the transmitting power of each transmitting and receiving component.
2. The L-band power supply weighted low sidelobe antenna array according to claim 1, wherein the digital controller (4) outputs a weighting parameter to the power supply unit (1) in a serial interface or network interface program-controlled manner, the weighting parameter is used for controlling the voltage output by the power supply unit (1), and the voltage variation range is 9V-36V.
3. The L-band power supply weighted low sidelobe antenna array as claimed in claim 1, wherein the transmitting and receiving components (2-1 to 2-N) are configured to achieve power amplification of transmitting signals of each channel, and amplification, frequency conversion and control of receiving signals; meanwhile, the weighting control of the antenna array antenna units is realized; the transmitting power amplifier of the transmitting and receiving component adopts a gallium nitride power amplifier, and the peak transmitting power is 50W-800W; the gallium nitride power amplifier adopts grid voltage to control the saturated output power of the power amplifier, the control voltage range is 9V-36V, the control power attenuation range is-9 dB-0 dB, and the power control precision is 0.05 dB.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111349128.5A CN114069234A (en) | 2021-11-15 | 2021-11-15 | L-band power supply weighted low-sidelobe antenna array |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111349128.5A CN114069234A (en) | 2021-11-15 | 2021-11-15 | L-band power supply weighted low-sidelobe antenna array |
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| CN114069234A true CN114069234A (en) | 2022-02-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115915164A (en) * | 2022-12-05 | 2023-04-04 | 广东省电信规划设计院有限公司 | Communication indoor distribution system design method and device based on 5G technology |
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2021
- 2021-11-15 CN CN202111349128.5A patent/CN114069234A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115915164A (en) * | 2022-12-05 | 2023-04-04 | 广东省电信规划设计院有限公司 | Communication indoor distribution system design method and device based on 5G technology |
| CN115915164B (en) * | 2022-12-05 | 2024-04-30 | 广东省电信规划设计院有限公司 | 5G technology-based communication indoor distribution system design method and device |
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