Design of Rat-Race based Retrodirective Arrays for Backscatter Communications

Mahalakshmi P,Vallikannu A L

doi:10.34256/bsr2022

Abstract

Fast beaming tracking and security are important factors for the development of communication technology. A Retrodirective antenna (RDA) technique has been attenuated to one way of improving security. It has the interesting property of automatically responding to an incoming signal location without any prior knowledge of the direction of that source. The purpose of this paper is to design a Rat race coupler which acts as a Retrodirective mode in ANSYS. The resonant frequency of the coupler is 2.4 GHz. The Proposed Rat race couplers have been devised using the Glass Epoxy substrate (FR4) with dielectric constant (?r = 4.4). S parameters, radiation pattern, insertion and isolation losses are obtained from ANSYS software

Highlights

IntroductionIn recent years, interest in wireless communication is increasing due to the development of communication technology
Retrodirective antenna (RDA) has a simpler structure than a conventional antenna
Battlefield IFF (Identification friend or foe) transponders, and target or project surveillance detection radar for mobile vehicles, are some scenarios which would benefit from an RDA

Summary

Introduction

In recent years, interest in wireless communication is increasing due to the development of communication technology. Many RF systems are designed for tracking systems, military communications, radar, and Radiofrequency identification and microwave power transmission [1]. RDA has a simpler structure than a conventional antenna. This high speed and self-tracking process make Retrodirective array useful for RFID and civilian applications by offering automatic maintenance of a high gain link between an interrogator and an RDA. Retrodirective array is ideal use as passive transponders for a wide range of applications. Battlefield IFF (Identification friend or foe) transponders, and target or project surveillance detection radar for mobile vehicles, are some scenarios which would benefit from an RDA. Retro directive systems can accelerate the detection of targets and reduce the complexity of systems compared with conventional phased arraybased smart antennas

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Conclusion