An electronically switchable leaky wave antenna

Author

Huang, Limin ; Chiao, Jung-Chih ; De Lisio, Michael P.

Author_Institution

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

Volume

48

Issue

11

fYear

2000

fDate

11/1/2000 12:00:00 AM

Firstpage

1769

Lastpage

1772

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

Keywords

antenna radiation patterns; beam steering; dielectric-loaded antennas; leaky wave antennas; microwave antennas; p-i-n diodes; semiconductor switches; 3.5 GHz; SHF; beam direction; beam steering; dielectric leaky wave antenna; dielectric loaded antennas; electronically steered antenna; electronically switchable leaky wave antenna; fixed frequency; gratings; main beam angle; main beam angle switching; measured antenna patterns; microwave prototype; millimeter-wave frequencies; monolithically integrated diodes; p-i-n diodes; periods; radiation; semiconductor waveguide; Antenna measurements; Beam steering; Dielectrics; Frequency; Gratings; Leaky wave antennas; P-i-n diodes; Prototypes; Semiconductor diodes; Switches;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.900235

Filename

900235