Tuning control arrangement
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United States of America Patent
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Sep 20, 2011
Grant Date -
Aug 7, 2008
app pub date -
Oct 17, 2005
filing date -
Apr 5, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A tuning arrangement for a resonant circuit, the tuning arrangement having an output reactance dependent upon a plurality of input applied signals one of which is an input tuning signal, and including: an array of tuning circuits connected in a network whose output reactance is used to control the resonance frequency of the resonant circuit, each tuning circuit having a control input and having a reactance which varies in dependence upon the value of a control signal applied to the control input; elements for generating a plurality of different control signals for application to the control inputs of the tuning circuits; and each such control signal varying substantially linearly with the input tuning signal throughout a predetermined range specific to that control signal, so that the frequency response of the resonant circuit to the input tuning signal is substantially linear throughout a desired range of the input tuning signal.
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