A waveguide switched-susceptance (diode-patch) phase shifter

Author

Virga, K.L. ; Seaton, A.F. ; Walker, L.R.

Author_Institution

Hughes Aircraft Co., El Segundo, CA, USA

fYear

1989

fDate

13-15 June 1989

Firstpage

123

Abstract

A digital p-i-n diode phase shifter that operates in double-ridge waveguide is described. The phase shifter consists of several split conductive patches etched on a dielectric strip which is inserted in the longitudinal direction in the waveguide. The upper and lower half of each split patch are electrically connected by a diode that is switched between forward and reverse bias to shift the phase in the waveguide. A four-patch 22.5 degrees phase shifter and a five-patch 45.0 degrees phase shifter were designed and fabricated using a computer design program. The measured voltage standing-wave ratio and phase shift performance of the phase shifters are shown. Both phase shifters have less than 0.4-dB insertion loss and less than -40-dB interwaveguide coupling.<>

Keywords

p-i-n diodes; phase shifters; solid-state microwave circuits; waveguide components; computer design program; dielectric strip; digital p-i-n diode phase shifter; diode-patch; double-ridge waveguide; insertion loss; interwaveguide coupling; phase shift performance; reverse bias; split conductive patches; voltage standing-wave ratio; Antenna arrays; Antenna feeds; Dielectrics; Diodes; Etching; Horn antennas; Microstrip; Phase shifters; Strips; Waveguide transitions;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 1989., IEEE MTT-S International

Conference_Location

Long Beach, CA, USA

Type

conf

DOI

10.1109/MWSYM.1989.38684

Filename

38684