Title :
Schottky-biased, optically controlled coplanar waveguide phase-shifter
Author :
Cheung, P. ; Neikirk, D.P. ; Itoh, T.
Author_Institution :
Dept. of Electr. & Comput. Eng., Texas Univ., Austin, TX, USA
Abstract :
Phase shift measurements of a Schottky-biased, optically controlled coplanar waveguide (CPW) phase-shifter are presented. A prototype device consisting of a CPW on top of a lightly doped GaAs epilayer on a semi-insulating GaAs substrate was fabricated and tested. The highest phase shift obtained with an illuminating optical intensity of 4mW/cm2 was 120 degrees at 40 GHz for a 1 cm-long device.
Keywords :
Schottky effect; phase shifters; solid-state microwave devices; waveguide components; 40 GHz; CPW; Schottky-biased; coplanar waveguide; lightly doped GaAs epilayer; microwave devices; optically controlled; phase shift measurement; phase-shifter; prototype device; semi-insulating GaAs substrate;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19890870
