Dual FET active patch elements for spatial power combiners

Author

Wu, Xiao Dong ; Chang, Kai

Author_Institution

Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA

Volume

43

Issue

1

fYear

1995

fDate

1/1/1995 12:00:00 AM

Firstpage

26

Lastpage

30

Abstract

A novel dual-FET active patch antenna element and arrays for quasi-optical power combining are described. The circuit uses two FET´s that symmetrically load a split patch antenna. The configuration of the devices decreases H-plane cross-polarization dramatically. The power combining was achieved by injection locking through mutual coupling. An equivalent isotropic radiation power of 0.88 W for a 2-element dual-FET patch antenna array has been obtained. For a 2×2 array, an equivalent isotropic radiated power of 2.99 W was achieved. The circuit is planar and amenable to monolithic circuits

Keywords

active antenna arrays; antenna radiation patterns; circuit feedback; field effect transistor circuits; microstrip antenna arrays; microwave integrated circuits; power combiners; 0.88 to 2.99 W; H-plane cross-polarization; active patch antenna arrays; dual FET active patch elements; equivalent isotropic radiation power; injection locking; monolithic circuits; mutual coupling; planar circuit; quasi-optical power combining; spatial power combiners; split patch antenna; Antenna arrays; Circuits; FETs; Injection-locked oscillators; Millimeter wave technology; Millimeter wave transistors; Mutual coupling; Patch antennas; Power combiners; Power generation;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.363012

Filename

363012