Combined phase-locked loop and amplitude-locked loop module for switching FM signals
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United States of America Patent
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Oct 6, 2009
Grant Date -
Jul 2, 2009
app pub date -
Dec 26, 2007
filing date -
Dec 26, 2007
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Abstract
A combined PLL and ALL module for switching FM signals includes a PLL unit and an ALL unit electrically connected therewith. The PLL unit is used to initially process FM signals received from a co-channel. Outputs of the PLL unit are sent to the ALL unit and processed therein. The PLL unit and the ALL unit are controlled to process the FM signals by adjusting the ratio of second amplitude to first amplitude to closely approach a predetermined value such that the two FM signals are switched.
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