Design and implementation of a ferroelectric smart antenna system for 802.11b WLANs

Author

Ahn, Minsik ; Quillard, Gregory ; Kim, Dongsu ; Kenney, J. Stevenson

Author_Institution

Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA

fYear

2003

fDate

10-13 Aug. 2003

Firstpage

135

Lastpage

138

Abstract

This paper focuses on the design and implementation of an IEEE 802.11b WLAN smart antenna system for use in 802.11b WLAN network interface cards. The 2.4 GHz ferroelectric phase shifter is the key component for a two-element beam forming network (BFN). The smart antenna system is controlled by software that automatically adjusts the beam pattern to interference, and maximize the signal power. More than three orders of magnitude improvement in receive bit-error rate (BER) were measured when steering the antenna to the optimum position.

Keywords

UHF phase shifters; adaptive antenna arrays; adaptive signal processing; antenna radiation patterns; array signal processing; beam steering; control engineering computing; error statistics; ferrite phase shifters; interference suppression; telecommunication control; wireless LAN; BER; IEEE 802.11b WLAN; bit-error rate; ferroelectric phase shifter; interference; network interface cards; smart antenna system; two-element beam forming network; wireless local area network; Antenna measurements; Automatic control; Bit error rate; Control systems; Ferroelectric materials; Interference; Network interfaces; Phase shifters; Position measurement; Wireless LAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio and Wireless Conference, 2003. RAWCON '03. Proceedings

Print_ISBN

0-7803-7829-6

Type

conf

DOI

10.1109/RAWCON.2003.1227911

Filename

1227911