Performance enhancement of smart antennas with reduced element spacing


Autoria(s): Chaloupka, Heinz J; Wang, Xin; Coetzee, Jacob
Data(s)

28/05/2003

Resumo

This paper addresses the problem of degradations in adaptive digital beam-forming (DBF) systems caused by mutual coupling between array elements. The focus is on compact arrays with reduced element spacing and, hence, strongly coupled elements. Deviations in the radiation patterns of coupled and (theoretically) uncoupled elements can be compensated for by weight-adjustments in DBF, but SNR degradation due to impedance mismatches cannot be compensated for via signal processing techniques. It is shown that this problem can be overcome via the implementation of a RF-decoupling-network. SNR enhancement is achieved at the cost of a reduced frequency bandwidth and an increased sensitivity to dissipative losses in the antenna and matching network structure.

Formato

application/pdf

Identificador

http://eprints.qut.edu.au/48966/

Publicador

IEEE

Relação

http://eprints.qut.edu.au/48966/1/SNR_Smart_Ant_.pdf

DOI:10.1109/WCNC.2003.1200387

Chaloupka, Heinz J, Wang, Xin, & Coetzee, Jacob (2003) Performance enhancement of smart antennas with reduced element spacing. In IEEE Wireless Communications and Networking Conference Proceedings, IEEE, New Orleans, LA, pp. 425-430.

Direitos

Copyright 2003 IEEE

This work has been submitted to the IEEE for possible publication. Copyright may be transferred without notice, after which this version may no longer be accessible

Fonte

School of Electrical Engineering & Computer Science; Science & Engineering Faculty

Palavras-Chave #090699 Electrical and Electronic Engineering not elsewhere classified #adaptive beamforming #smart antennas #mutual coupling
Tipo

Conference Paper