Design of a planar array transponder with broad responding beam

Author

Chen, Hung-Tu ; Chung, Shyh-Jong

Author_Institution

Dept. of Commun. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan

Volume

7

Issue

9

fYear

1997

fDate

9/1/1997 12:00:00 AM

Firstpage

297

Lastpage

299

Abstract

A new planar array transponder, including four active receiving-transmitting microstrip antenna pairs, were demonstrated by using the Van Atta array design. The fields retransmitted by all the antenna pairs spatially combine in the wave-incidence direction while interfere with each other in other directions, so that the transponder responds the signal only to the on-line interrogator. The measured 10 dB (5 dB) responding beamwidth for the array transponder is 106°(80°), which is approximately the same as that of a transponder with a single antenna pair. Also, the measured radar cross section (RCS) patterns for the transponder at the on state (with bias) and off state (without bias) were compared. More than 20-dB difference between the patterns of these two states has been observed

Keywords

active antenna arrays; microstrip antenna arrays; microwave links; radar cross-sections; transponders; RCS patterns; Van Atta array design; active microstrip antenna pairs; broad responding beam; online interrogator; planar array transponder; radar cross section patterns; receiving-transmitting antenna pairs; Antenna arrays; Microstrip antenna arrays; Microstrip antennas; Millimeter wave communication; Planar arrays; Radar cross section; Receiving antennas; Signal design; Transmitting antennas; Transponders;

fLanguage

English

Journal_Title

Microwave and Guided Wave Letters, IEEE

Publisher

ieee

ISSN

1051-8207

Type

jour

DOI

10.1109/75.622547

Filename

622547