A reconfigurable active retrodirective/direct conversion receiver array for wireless sensor systems

Author

Miyamoto, R.Y. ; Yongxi Qian ; Itoh, T.

Author_Institution

Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA

Volume

2

fYear

2001

fDate

20-24 May 2001

Firstpage

1119

Abstract

A reconfigurable active retrodirective/direct conversion receiver array is presented. The system can serve as both a retrodirective array transponder and a direct conversion receiver simply by changing the frequency of the LO applied to the mixers. In the retrodirective array mode, the circuit provides 20 dB gain and 20 dB RF-IF isolation. The mixers perform phase-conjugation and modulation simultaneously. When operating as a direct conversion receiver, both I and Q channels are successfully recovered.

Keywords

active antenna arrays; directive antennas; microwave antenna arrays; radio receivers; transponders; 20 dB; I channel; LO signal; Q channel; RF-IF isolation; direct conversion receiver; gain; mixer circuit; modulation; phase conjugation; reconfigurable active retrodirective/direct conversion receiver array; retrodirective array transponder; wireless sensor; Adaptive arrays; Circuits; Mixers; Phase modulation; Phased arrays; Radio frequency; Sensor arrays; Sensor systems; Transponders; Wireless sensor networks;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 2001 IEEE MTT-S International

Conference_Location

Phoenix, AZ, USA

ISSN

0149-645X

Print_ISBN

0-7803-6538-0

Type

conf

DOI

10.1109/MWSYM.2001.967088

Filename

967088