Title :
Proposal and evaluation of reactively loaded inverted F antenna for cognitive wireless communication
Author :
Iigusa, Kyoichi ; Harada, Hiroshi ; Kato, Shuzo
Author_Institution :
Nat. Inst. of Inf. & Commun. Technol., Yokosuka
Abstract :
In this paper, we propose a frequency-tunable compact antenna to enable cognitive wireless communication. Planar type inverted F antennas corresponding to some wireless service frequency bands are combined with a common feed rod. By loading variable diodes in the closed loops of each inverted F antenna, the reactance for each varactor diode can be controlled independently with DC voltage. We demonstrated an antenna design that achieved an impedance matching less than three for VSWR in the three frequency bands of the UHF band, the 1.92 - 2.17 GHz band, and the 5.15 - 5.35 GHz band.
Keywords :
UHF antennas; antenna feeds; cognitive radio; impedance matching; microwave antennas; planar inverted-F antennas; varactors; VSWR; antenna design; antenna feed rod; cognitive wireless communication; frequency 1.92 GHz to 2.17 GHz; frequency 5.15 GHz to 5.35 GHz; frequency-tunable compact antenna; impedance matching; reactively loaded planar inverted F antenna; varactor diode; Antenna feeds; Communication system control; Diodes; Frequency; Loaded antennas; Proposals; UHF antennas; Varactors; Voltage control; Wireless communication;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2007 IEEE
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-0877-1
Electronic_ISBN :
978-1-4244-0878-8
DOI :
10.1109/APS.2007.4395624
