Title :
Design and optimization of a multipurpose tri-band Electronically Steerable Passive Array Radiator (ESPAR) antenna with steerable-beam-pattern for maximum directionality at the frequencies of 1.8, 1.9 and 2.4 GHz with the aid of genetic algorithms
Author :
Dimousios, Themistoklis D. ; Tsitouri, Christina I. ; Panagiotou, Stylianos C. ; Capsalis, Christos N.
Author_Institution :
Div. of Inf. Transm. Syst. & Mater. Technol., Nat. Tech. Univ. of Athens, Athens
Abstract :
The development of ESPAR antennas is a progressing research area which will play a significant role in commercial mobile communications applications. In this paper the performance of an electronically steerable passive array radiator (ESPAR) antenna, with cylindrical skirt regarding the horizontal radiation pattern, suitable for both mobile telephony (1.8 and 1.9 GHz) and WiFi/WLAN (2.4 GHz) applications is presented. An effort is carried out to optimize the performance of this structure regarding its resonant frequencies and the formation of a directional beam to a predetermined direction with the aid of the genetic algorithms (GA) technique. Due to their limited physical size, these antenna systems can be developed for application in the areas of mobile telephony, WiFi and ad hoc wireless networks.
Keywords :
antenna arrays; antenna radiation patterns; beam steering; directive antennas; genetic algorithms; mobile radio; WiFi/WLAN application; ad hoc wireless network; electronically steerable passive array radiator antenna; frequency 1.8 GHz; frequency 1.9 GHz; frequency 2.4 GHz; genetic algorithm; mobile communications application; mobile telephony; optimization; steerable directional beam pattern; Antenna arrays; Antenna radiation patterns; Design optimization; Directive antennas; Genetic algorithms; Mobile antennas; Mobile communication; Resonant frequency; Telephony; Wireless LAN; 3db beamwidth; ESPAR antenna; WiFi/WLAN; beam sreering; input impedance; mobile telephony;
Conference_Titel :
Antennas and Propagation Conference, 2008. LAPC 2008. Loughborough
Conference_Location :
Loughborough
Print_ISBN :
978-1-4244-1893-0
Electronic_ISBN :
978-1-4244-1894-7
DOI :
10.1109/LAPC.2008.4516914
