Title :
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
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;
Conference_Titel :
Radio and Wireless Conference, 2003. RAWCON '03. Proceedings
Print_ISBN :
0-7803-7829-6
DOI :
10.1109/RAWCON.2003.1227911
