Received signal strength detecting circuit
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United States of America Patent
Stats
-
Jan 4, 2000
Grant Date -
N/A
app pub date -
Jul 29, 1997
filing date -
Aug 1, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A received input signal 10 is received by a reception circuit 20 and a modulator 21, and demodulated data 12 and a reception level signal 16 are obtained. A modulator 23 reconstitutes a modulated wave 13 from the demodulated data 12, and an amplitude detector 21 detects the amplitude of the modulated wave, thus taking out amplitude level variations of the received wave due to modulation components. An analog subtractor 27 cancels the amplitude level variation component with respect to the reception level signal of the received wave. With the cancellation of the amplitude level variations of the received wave due to modulation components, it is possible to follow up quick amplitude level variation of the received wave.
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