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IEEE Transactions on Microwave Theory and Techniques
Volume 48 Number 8, August 2000

Table of Contents for this issue

Complete paper in PDF format

A Seven-Element S-Band Coupled-Oscillator Controlled Agile-Beam Phased Array

Ronald J. Pogorzelski, Fellow, IEEE Rocco P. Scaramastra, John Huang, Fellow, IEEE Robert J. Beckon, Steven M. Petree and Cosme M. Chavez

Page 1375.

Abstract:

This paper describes the design, fabrication, and testing of a seven-element S-band phased array, in which the beam is steered by means of a coupled-oscillator technique. Seven monolithic-microwave integrated-circuit-based voltage-controlled oscillators were coupled via microstrip transmission lines in such a manner that they mutually injection locked and,thus, oscillated as an ensemble. The output of each oscillator was connected to a microstrip patch array element and the seven elements were disposed in a line on a Duroid substrate. The resulting antenna was characterized in benchtop tests, revealing the relative phase behavior of the oscillators, and in range tests, producing far-field pattern cuts. Patterns showing beams steered to several angles were obtained by applying appropriate tuning voltages to the end oscillators of the array.

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