NDLI: Non-linear amplifier effects in transmit beamforming arrays

Content Provider	IEEE Xplore Digital Library
Author	Real, E.C. Charette, D.P.
Copyright Year	1995
Description	Author affiliation: Lockheed Sanders Inc., Nashua, NH, USA (Real, E.C.; Charette, D.P.)
Abstract	The effects of memoryless (no feedback) amplifiers with amplitude non-linearities on the output of transmit beamforming arrays is studied. These studies are limited to "small signal" cases where the output signal is not undergoing significant compression by the amplifier; and where the amplifier non-linearities can be approximated well by a cubic polynomial. The performance of three "optimal" beamforming techniques are compared and contrasted when both linear and non-linear amplifiers are used in a two dimensional array. The two dimensional array considered is designed to simultaneously transmit two narrowband signals, at different frequencies, through a common aperture. Attention is focused on the non-linearity induced interaction of the stimulus signals, and the effect this has on the array's outputs as a function of the beamforming technique.
Starting Page	3635
Ending Page	3638
File Size	419070
Page Count	4
File Format	PDF
ISBN	0780324315
ISSN	15206149
DOI	10.1109/ICASSP.1995.479774
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-05-09
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Array signal processing Apertures Frequency Narrowband Phased arrays Power amplifiers Output feedback Polynomials Signal design Quantization
Content Type	Text
Resource Type	Article

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