Adaptive transmit antenna

Author

Dybdal, R.B. ; Curry, S.J.

Author_Institution

Aerosp. Corp., El Segundo, CA, USA

Volume

4

fYear

1997

fDate

13-18 July 1997

Firstpage

2410

Abstract

Adaptive techniques applied to receive antennas are a well established technology. However, the application of adaptive techniques to transmitting antennas has not been pursued. An example of adaptively controlling a transmitting antenna is described. The application that motivated this adaptive transmit antenna concept is personal communication systems where user antennas are required to have broad antenna coverage to avoid antenna pointing requirements. The broad coverage characteristics of the antenna unavoidably results in multipath susceptibility that degrades the performance. This new adaptive transmit antenna provides a means to reduce the multipath in the transmit case. Multipath distortions on transmission reduce the isolation between multiple users in CDMA systems, which is a well known limit on overall system capacity.

Keywords

adaptive antenna arrays; CDMA systems; RAKE receiver; adaptive transmit antenna; broad antenna coverage; multipath distortions; multipath susceptibility; performance; personal communication systems; system capacity; transmitting antennas; Adaptive arrays; Adaptive control; Degradation; Fading; Lighting; Multiaccess communication; Programmable control; Receiving antennas; Transmitters; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1997. IEEE., 1997 Digest

Conference_Location

Montreal, Quebec, Canada

Print_ISBN

0-7803-4178-3

Type

conf

DOI

10.1109/APS.1997.625456

Filename

625456