Title :
Implementation of a cognitive radio front-end using optically reconfigurable antennas
Author :
Tawk, Y. ; Al-Husseini, M. ; Hemmady, S. ; Albrecht, A.R. ; Balakrishnan, G. ; Christodoulou, C.G.
Author_Institution :
Electr. & Comput. Eng. Dept., Univ. of New Mexico, Albuquerque, NM, USA
Abstract :
This paper presents a reconfigurable radio front-end antenna scheme suitable for cognitive radio communications. Our scheme comprises of an UWB antenna structure (antenna-1) and a reconfigurable antenna structure (antenna-2) incorporated together on the same substrate. The UWB antenna-1 is used for channel sensing while the reconfigurable antenna-2 is designed to frequency-hop between pre-determined communication channels. The reconfiguration of antenna-2 is achieved by using photoconductive switches which are selectively illuminated by laser light from a series of integrated laser diodes. A prototype was fabricated and tested to prove the applicability of our proposed radio front-end scheme.
Keywords :
cognitive radio; photoconducting switches; semiconductor lasers; software radio; ultra wideband antennas; UWB antenna structure; cognitive radio communication; integrated laser diode; laser light; optically reconfigurable antenna; photoconductive switches; reconfigurable antenna structure; reconfigurable radio front-end antenna scheme; Antenna measurements; Cognitive radio; Frequency measurement; Loss measurement; Sensors; Ultra wideband antennas;
Conference_Titel :
Electromagnetics in Advanced Applications (ICEAA), 2010 International Conference on
Conference_Location :
Sydney, NSW
Print_ISBN :
978-1-4244-7366-3
DOI :
10.1109/ICEAA.2010.5651539
