Method and a device pertaining to an electro-mechanically controlled resonance module
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United States of America Patent
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Apr 18, 1995
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N/A
app pub date -
Jun 15, 1992
filing date -
Dec 2, 1988
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Abstract
Method and apparatus in mobile telephone system including base stations with a plurality of resonance modules, for separately adjusting each resonance module to its own frequency for receiving and expediting telephone signals at this frequency. In each resonance module, tuning is controlled to its given resonance position in relation to the frequency of the incoming signal, by an electromechanical drive which is connected for obtaining drive voltage by phase comparison. The drive voltage passes solely when two input signals differ in phase. When both signals are in phase, the drive voltage is zero, the drive then being stationary and the resonance module being adjusted in resonance to the input signal.
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