Phase and time delays for microwave signals using photocarrier drift in a semiconductor

Author

Merlet, Th ; Dolfi, D. ; Huignard, J.P.

Author_Institution

Thomson-CSF, Orsay, France

Volume

9

Issue

4

fYear

1997

fDate

4/1/1997 12:00:00 AM

Firstpage

478

Lastpage

480

Abstract

We present and experimentally demonstrate, at 1.6 GHz, the generation of phase and time delays on microwave signals in a photoconductive semiconductor. It takes advantage of the synchronous drift of photogenerated carriers with a moving interference pattern. Phase and time delays are controlled according to the relative orientation of the moving interference pattern with a high-speed photodetector array. Owing to the resonant principle, high sensitivity is available which is suitable for the control of signals in phased array antennas.

Keywords

antenna phased arrays; arrays; delays; light interference; microwave antenna arrays; phase control; photoconducting materials; photodetectors; semiconductors; 1.6 GHz; high-speed photodetector array; microwave signals; moving interference pattern; phase delays; phased array antennas; photocarrier drift; photoconductive semiconductor; relative orientation; semiconductor; signal control; synchronous drift; time delays; Delay effects; Electrodes; High speed optical techniques; Interference; Optical variables control; Phase modulation; Phased arrays; Photoconductivity; Photodetectors; Resonance;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.559394

Filename

559394