Keywords
Amplifier noise, antenna array mutual coupling, multiport circuits, signal-to-noise ratio
Abstract
From classical two-port noise theory, the noise figure of an amplifier is minimized when a source is matched to a particular optimal reflection coefficient at the amplifier input. In this paper, we show that this result extends in a natural way to the multiport case, with a coupled N-port source network such as an array antenna connected by a multiport matching network to the inputs of N low-noise amplifiers. For optimal noise performance, the matching network must decouple the array and present isolated, individually noise-matched ports to the amplifier inputs.
Original Publication Citation
Warnick, K. F., and M. A. Jensen. "Optimal Noise Matching for Mutually Coupled Arrays." Antennas and Propagation, IEEE Transactions on 55.6 (27): 1726-31
BYU ScholarsArchive Citation
Jensen, Michael A. and Warnick, Karl F., "Optimal noise matching for mutually-coupled arrays" (2007). Faculty Publications. 252.
https://scholarsarchive.byu.edu/facpub/252
Document Type
Peer-Reviewed Article
Publication Date
2007-06-01
Permanent URL
http://hdl.lib.byu.edu/1877/1089
Publisher
IEEE
Language
English
College
Ira A. Fulton College of Engineering and Technology
Department
Electrical and Computer Engineering
Copyright Status
© 2007 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
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