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IEEE Transactions on Antennas and Propagation
Volume 48 Number 11, November 2000

Table of Contents for this issue

Complete paper in PDF format

An Electronically Switchable Leaky Wave Antenna

Limin Huang, Member, IEEE Jung-Chih Chiao and Michael P. De Lisio Member, IEEE

Page 1769.

Abstract:

We report an electronically switchable dielectric leaky wave antenna. The main beam angle can be electronically steered using p-i-n diodes. The diodes are used as switches to control the radiation from two sets of gratings with different periods, thereby switching the main beam angle. Beam steering is achieved at a single fixed frequency; no frequency sweeping is necessary. A microwave prototype demonstrates a 35° change in beam direction at 3.5 GHz. Measured antenna patterns agree with theoretical predictions. This approach should be scalable to millimeter-wave frequencies using diodes monolithically integrated on a semiconductor waveguide.

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