A novel T-shaped optically controlled microwave phase shifter

Author

Pendharker, Sarang ; Shevgaonkar, R.K. ; Chandorkar, A.N.

Author_Institution

Dept. of Electr. Eng., Indian Inst. of Technol. Bombay, Mumbai, India

fYear

2011

fDate

7-9 Nov. 2011

Firstpage

1

Lastpage

3

Abstract

A novel T-shaped optically controlled microwave phase shifter is presented in this paper. The phase shifter consists of a T-shaped microstrip line with a gap in the shunt arm. The gap is filled with silicon and its conductivity is modulated by photo-excitation. The preliminary design of phase shifter is carried out using the transmission line model. Further Method of Moments is used to accurately model the photo-excited microstrip gap. The phase shifter parameters are optimized to achieve high phase shift with minimal insertion loss and ON-to-OFF amplitude change.

Keywords

elemental semiconductors; method of moments; microstrip lines; microwave phase shifters; photoexcitation; silicon; transmission lines; ON-to-OFF amplitude change; Si; T-shaped microstrip line; T-shaped optically controlled microwave phase shifter; conductivity; method of moments; minimal insertion loss; photo-excited microstrip gap; shunt arm; transmission line model; Optical attenuators; Optical control; Optical device fabrication; Optical interferometry; Optical reflection; Optical switches; Phase shifters; Optical control; phase shifter; photo-excitation; photoconductance;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwaves, Communications, Antennas and Electronics Systems (COMCAS), 2011 IEEE International Conference on

Conference_Location

Tel Aviv

Print_ISBN

978-1-4577-1692-8

Type

conf

DOI

10.1109/COMCAS.2011.6105822

Filename

6105822