DocumentCode :
2980949
Title :
Design of Optically Controlled Microwave Switch for Reconfigurable Antenna Systems
Author :
Liu, Peng-Ju ; Zhao, De-Shuang ; Wang, Bing-Zhong
Author_Institution :
Univ. of Electron. Sci. & Technol. of China, Chengdu
fYear :
2007
fDate :
18-21 April 2007
Firstpage :
1
Lastpage :
4
Abstract :
A novel optically controlled microwave switch has been designed for applications in reconfigurable antenna systems. This new configuration consists of a microstrip transmission line with a gap etched in the metal strip and two identical microstrip square open-loop resonators. A piece of silicon photoconductive dice is placed on the etched gap. With no optical illumination the switch exhibits a well-defined stopband. The isolation is about 53 dB at the resonant frequency of 11.65 GHz. When light is focused onto the silicon dice, the photoconductivity effect suppresses the bandstop characteristic and induces the switch at "ON" state. The simulation result shows that there is a distinct improvement of the isolation by 20 dB than the optically controlled switches previously reported.
Keywords :
microstrip antennas; microwave antennas; microwave switches; open loop systems; reconfigurable architectures; microstrip transmission line; open loop resonators; optically controlled microwave switch; reconfigurable antenna systems; silicon photoconductive dice; Control systems; Etching; Microstrip resonators; Microwave antennas; Open loop systems; Optical control; Optical design; Optical resonators; Optical switches; Silicon; open-loop resonator; optically controlled switch; photoconductivity effect; reconfigurable antenna;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Microwave and Millimeter Wave Technology, 2007. ICMMT '07. International Conference on
Conference_Location :
Builin
Print_ISBN :
1-4244-1049-5
Electronic_ISBN :
1-4244-1049-5
Type :
conf
DOI :
10.1109/ICMMT.2007.381325
Filename :
4266084
Link To Document :
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