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

fYear

2008

fDate

17-18 March 2008

Firstpage

253

Lastpage

256

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/LAPC.2008.4516914

Filename

4516914