Electronic scanning of linear slot arrays using diode irises

Author

Goebels, Frank J., Jr. ; Forman, Barry J. ; Nonnemaker, Clarence H., Jr.

Author_Institution

Hughes Aircraft Co., Culver City, CA, USA

Volume

16

Issue

1

fYear

1968

fDate

1/1/1968 12:00:00 AM

Firstpage

8

Lastpage

14

Abstract

Semiconductor diodes were employed as electronic iris control elements to scan linear slot arrays at $X$ -band. An iris cluster of four varactor diodes mounted inside the waveguide around each slot provided $360\\deg$ of phase control for slot coupling levels up to -15 dB and a reduced range of phase control for couplings up to -8 dB. Two linear arrays were fabricated with different iris cluster configurations: 1) A ten-slot array, with vertically mounted diodes, electronically scanned sum and difference patterns up to $90\\deg$ ; 2) a five-slot array, with horizontally mounted diodes, scanned sum patterns up to $120\\deg$ . Both iris configurations had an RF power handling capability of about 0.1 mW.

Keywords

Diodes; Slot arrays; Waveguide discontinuities; Aircraft; Electromagnetic waveguides; Iris; Phase control; Radio frequency; Rectangular waveguides; Semiconductor diodes; Semiconductor waveguides; Voltage; Waveguide discontinuities;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.1968.1139106

Filename

1139106