Envelope detector having reduced harmonic interference
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United States of America Patent
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Issued Date -
Jan 15, 2009
app pub date -
Jul 11, 2007
filing date -
Jul 11, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A system for detecting the envelope of a signal is provided. The system includes a first envelope detector generating a first envelope signal of an input RF signal, such as an envelope signal representing the positive peak envelope of the input RF signal. A second envelope detector generates a second envelope signal of the input RF signal, such as an envelope signal representing the negative peak envelope of the input RF signal. A signal combiner receives the first envelope signal and the second envelope signal and generates an even-order harmonic compensated envelope signal, such as by compensating for the difference between the positive peak envelope and the negative peak envelope.
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