Phased-array antenna capable of realizing arbitrary polarization switching

A phased array antenna, phased array technology, applied in the directions of antenna arrays, antennas, and antenna arrays that are powered on separately, can solve the problems of increasing the height and complexity of the antenna profile, increasing the loss, increasing the cost of the antenna, and achieving the loss of The effect of small size, high integration and short polarization switching time

Inactive Publication Date: 2020-04-21
CHENGDU RDW TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The former will increase the loss, as well as some parasitic effects introduced by the diode, and also increase the cost of the antenna; the latter will increase the profile height and complexity of the antenna

Method used

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  • Phased-array antenna capable of realizing arbitrary polarization switching
  • Phased-array antenna capable of realizing arbitrary polarization switching
  • Phased-array antenna capable of realizing arbitrary polarization switching

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A phased array antenna capable of arbitrary polarization switching, characterized in that it includes a TR channel module, the TR channel module includes N 2*2 TR sub-arrays, and each TR sub-array contains 4 phased array radiation units , the number of TR channels of each TR sub-array is 2*4; each phased array radiation unit includes a patch and feed point A and feed point B located on the patch, and each phased array radiation unit is double-fed point feed.

[0039] Further, the structure of the TR sub-array is tile or brick.

[0040] Further, the transceiver channel module of each TR sub-array includes 8 transceiver channels; each transceiver channel module includes a sub-array transceiver channel module including a TR transceiver chip, a radiation unit, a power control circuit, a wave control control circuit and a power divider network ; The TR transceiver chip includes a transceiver amplifier circuit and an attenuation phase-shifting amplifier multifunctional circu...

Embodiment 2

[0051] On the basis of Example 1, the TR channel module adopts a CMOS multifunctional chip combined with a gallium arsenide chip, and the phased array radiation unit uses double feed points for excitation, and each feed point is followed by a phase shifter, so One phased array radiating unit corresponds to 2 TR channels, and four radiating units are used as a TR sub-array, and the number of channels in each TR sub-array is 4*2, a total of 8 channels. The GaAs TR chip mainly completes the functions of polarization switching, transceiver switching, low-noise amplification of the receiving link, and power amplification of the transmitting link. Therefore, the GaAs TR chip consists of three parts: a switch, a low-noise amplifier, and a power amplifier. The silicon-based multifunctional chip mainly completes the phase shifting, attenuation and amplification functions of the signal, so the silicon-based multifunctional chip is composed of amplifiers, attenuators, phase shifters, digi...

Embodiment 3

[0069] Taking the phased array antenna with 8*8=64 array elements as an example, the sub-array contains 2*2 array elements, and the array surface is 16 sub-arrays. Each array element is excited by double feed points, and each feed point is followed by a phase shifter and an attenuator. By controlling the amplitude and phase of phase shifters and attenuators, electromagnetic waves with different polarizations can be realized

[0070] The polarized waves corresponding to the work include linear polarization, left-handed circular polarization, right-handed circular polarization, left-handed elliptical polarization and right-handed elliptical polarization.

[0071] The corresponding working phased array antennas have the same array radiating elements and are placed in the same way.

[0072] The corresponding working phased array antenna uses a double feed point to excite the radiation unit.

[0073] Each excitation of the corresponding phased array antenna is connected with a ph...

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Abstract

The invention relates to the field of phased-array antennas and especially relates to a phased-array antenna capable of realizing arbitrary polarization switching. The phased-array antenna comprises phased-array radiation units and a TR channel module. The TR channel module comprises N 2*2 TR sub-arrays, each TR sub-array comprises four radiation units, and the number of TR channels of each TR sub-array is 2*4; each phased array radiation unit comprises a patch, a feed point A and a feed point B, wherein the feed point A and the feed point B are located on the patch; and each phased array radiation unit carries out double-feed-point feeding. In the invention, one set of phased-array antenna equipment is used to realize functions of linear polarization, left-hand circular polarization, right-hand circular polarization and the like which are possessed by three sets of phased-array antenna equipment in the past so that cost and a structural size are greatly reduced, and a parasitic effectgenerated by using active devices is avoided.

Description

technical field [0001] The present application relates to the field of phased array antennas, and in particular, relates to a phased array antenna that can realize arbitrary polarization switching. Background technique [0002] The phased array antenna is an array antenna composed of many antenna units arranged in an array, and beam scanning and beam forming are realized by adjusting the feeding phase of each antenna unit. It has the advantages of small size, light weight, easy to form multiple beams, the ability to realize rapid changes in antenna beam pointing and beam shape, and the ability to adjust the communication capacity between beams. These advantages make it stable for tracking multiple high-speed moving targets. In addition, the phased array antenna can also realize the synthesis of signal power in space, so as to obtain a large EIRP (isotropic equivalent radiated power), which is to increase the system range, improve the system measurement accuracy and observati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q21/06H01Q1/48H01Q1/50H01Q15/24H01Q3/26
CPCH01Q1/48H01Q1/50H01Q3/2617H01Q15/24H01Q21/065
Inventor 余正冬刘昊马明凯郭宏展
Owner CHENGDU RDW TECH CO LTD
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