METHOD FOR CONTROLLING ARRAY ANTENNA EQUIPPED WITH A PLURALITY OF ANTENNA ELEMENTS, METHOD FOR CALCULATING SIGNAL TO NOISE RATIO OF RECEIVED SIGNAL, AND METHOD FOR ADAPTIVELY CONTROLLING RADIO RECEIVER
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United States of America Patent
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Jun 6, 2006
Grant Date -
Aug 21, 2003
app pub date -
Nov 7, 2002
filing date -
Nov 7, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Based on a received signal y(t) received by a radiating element of an array antenna including the single radiating element and a plurality of parasitic elements, an adaptive controller calculates and sets a reactance value of a variable reactance element for directing a main beam of the array antenna in a direction of a desired wave and directing nulls in directions of interference waves so that a value of an objective function expressed by only the received signal y(t) becomes either one of the maximum and the minimum by using an iterative numerical solution of a nonlinear programming method.
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