A retroreflector with echo enhancement and phase shift modulation

A technology of phase shift modulation and reverse reflection, which is applied in the field of radar interference to achieve the effects of easy portability, improved system integration, and reduced volume

Active Publication Date: 2021-08-31
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiency that the echo phase feature is fixed when the existing retroreflector is used as a retroreflector, the present invention proposes a new retroreflector, which has the characteristics of phase shift modulation and echo enhancement function

Method used

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  • A retroreflector with echo enhancement and phase shift modulation
  • A retroreflector with echo enhancement and phase shift modulation

Examples

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0015] like figure 1 As shown, this specific embodiment includes a receiving antenna array 11 , a transmitting antenna array 12 , transmission lines 21 and 22 , a radio frequency integrated module 3 , a phase shift controller 4 and a power supply 5 . In this embodiment, the receiving antenna array 11 and the transmitting antenna array 12 are the same antenna array, in other embodiments, the receiving antenna array 11 and the transmitting antenna array 12 can be different antenna arrays, as long as the two antenna arrays satisfy phase conjugate relationship. In this example, the receiving antenna array 11 and the transmitting antenna array 12 all adopt 4×4 element antenna arrays. In other embodiments, the number of antenna array elements can be selected according to actual requirements. Usually, the greater the gain of the required antenna array The la...

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Abstract

The invention provides a retroreflector with functions of echo enhancement and phase shift modulation. It is characterized in that it includes a receiving antenna array, a transmitting antenna array, a radio frequency integrated module, and a phase shift controller. A phase shifter and an amplifier constitute a radio frequency integrated module. The signal received by each receiving element is amplified and phase-shifted by the radio frequency integrated module, and then transmitted by the corresponding transmitting element. All phase shifters are synchronously controlled by a phase shifter controller. Because the planar retroreflector provided by the present invention has the function of enhancing the echo signal, it can realize a larger RCS with a smaller structural size, improve the system integration, reduce the volume of the reflector device, and has the advantages of miniaturization, easy Advantages of portability and quick deployment.

Description

technical field [0001] The invention belongs to the technical field of radar interference, and relates to a retroreflector with functions of echo enhancement and phase shift modulation. Background technique [0002] Retroreflector refers to a reflective device that can focus the reflected radar wave signal and reflect it back along the original path of the incident direction within a certain range of radar wave incident angle, and generally has a strong backscattered echo. Commonly used retroreflectors include corner reflectors, Lunberg lenses, and retroreflective antenna arrays. Among them, the retroreflector array has a simple structure and low cost, and is a retroreflector scheme with broad application prospects. The retroactive antenna array is a beam adaptive antenna technology based on phase conjugation, which can automatically adjust the transmit beam pointing to the incoming wave direction through the phase conjugated transmission path of the received radar wave, wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/38
CPCG01S7/38
Inventor 陈强郑月军杨凯丁亮廖敦微郭田田袁方付云起
Owner NAT UNIV OF DEFENSE TECH
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