An active self-steering array using self-oscillating mixers

Author

Shiroma, G.S. ; Chenyan Song ; Miyamoto, R.Y. ; Shiroma, W.A.

Author_Institution

Dept. of Electr. Eng., Hawaii Univ. at Manoa, Honolulu, HI, USA

Volume

3

fYear

2003

Firstpage

1685

Abstract

A retrodirective array using self-oscillating mixers (SOMs) is presented. SOMs allow for easier implementation of larger two-dimensional arrays by eliminating the complex local-oscillator (LO) feed structure. A four-element linear retrodirective array using SOMs is demonstrated at a LO frequency of 8.87 GHz. Each element is successfully phased locked at the LO frequency while 33 dB of isolation between adjacent elements is measured at the RF frequency. The LO power generated by a single SOM element at the fundamental frequency is +3 dBm. Retrodirectivity is successfully observed for scattering angles of -30/spl deg/, 0/spl deg/, and +15/spl deg/.

Keywords

active antenna arrays; directive antennas; microstrip antenna arrays; microwave mixers; phase locked oscillators; 8.87 GHz; LO frequency; LO power; RF frequency; active self-steering array; four-element linear retrodirective array; local-oscillator feed structure elimination; patch antennas; phase locked elements; phase-conjugating array; retrodirective array; retrodirectivity; scattering angles; self-oscillating mixers; two-dimensional arrays; Circuits; Feeds; Frequency measurement; Mixers; Oscillators; Phase measurement; Phased arrays; Power generation; Radio frequency; Solar power generation;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 2003 IEEE MTT-S International

Conference_Location

Philadelphia, PA, USA

ISSN

0149-645X

Print_ISBN

0-7803-7695-1

Type

conf

DOI

10.1109/MWSYM.2003.1210463

Filename

1210463