Title :
A band-reconfigurable directed dipole antenna
Author :
Lei Ge ; Kwai Man Luk
Author_Institution :
Dept. of Electron. Eng., City Univ. of Hong Kong, Kowloon, China
Abstract :
A novel reconfigurable directed dipole antenna operated in a wideband or four narrowband modes is presented. The wideband mode (0.83-2.5 GHz) is based on a folded bowtie dipole while the four narrowband modes are based on a length-reconfigurable thin dipole backed by a rectangular cavity. PIN diodes are used as switches at specific locations for choosing different modes. A fully functional prototype is developed and exhibits good performance. The antenna can achieve well-controlled unidirectional radiation patterns and is potentially suitable for cognitive radio.
Keywords :
antenna radiation patterns; bow-tie antennas; broadband antennas; cognitive radio; dipole antennas; directive antennas; microwave antennas; p-i-n diodes; telecommunication control; PIN diodes; band-reconfigurable directed dipole antenna; cognitive radio; folded bowtie dipole; frequency 0.83 GHz to 2.5 GHz; length-reconfigurable thin dipole; narrowband modes; rectangular cavity; well-controlled unidirectional radiation patterns; wideband modes; Antenna measurements; Antenna radiation patterns; Broadband antennas; Cognitive radio; Dipole antennas; Narrowband; Wideband;
Conference_Titel :
Electromagnetics (iWEM), 2013 IEEE International Workshop on
Conference_Location :
Kowloon
Print_ISBN :
978-1-4799-6654-7
DOI :
10.1109/iWEM.2013.6888803
