Small smart antenna composed of reconfigurable Inverted F-type Antenna

Author

Haitao Liu ; Gao, Smith ; Tian Hong Loh

Author_Institution

Fac. of Eng. & Phys. Sci., Univ. of Surrey, Guildford, UK

fYear

2009

fDate

3-6 Nov. 2009

Firstpage

33

Lastpage

36

Abstract

In this paper, a small size electronically steerable parasitic array radiator (ESPAR) antenna composed of six inverted F-type antennas (IFAs) that covers the frequency band from 2.4 to 2.5 GHz is proposed. Each of the IFAs can be reconfigured either as a driven element or a parasitic element equally. The radius of the proposed ESPAR antenna is 11.5 mm, which enables handheld wireless devices such as mobile phone and walkie talkie to employ a smart antenna. Despite its small size, the proposed ESPAR antenna achieves a gain of 3.5 dBi and a front-back ratio of 7 dB. The beam forming can be achieved by tuning the reactive load of varactors on each IFA radiator.

Keywords

adaptive antenna arrays; beam steering; ESPAR; IFA; beam forming; driven element; electronically steerable parasitic array radiator antenna; frequency 2.4 GHz to 2.5 GHz; inverted F-type antenna; parasitic element; size 11.5 nm; smart antenna; varactors; ESPAR; IFA; beam forming; reconfigurable; small antenna; smart antenna;

fLanguage

English

Publisher

iet

Conference_Titel

Microwave Technology and Computational Electromagnetics, 2009. ICMTCE. International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-84919-140-1

Type

conf

DOI

10.1049/cp.2009.1254

Filename

5521340