ELECTRONIC ENVELOPE DETECTION CIRCUIT AND CORRESPONDING DEMODULATOR
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United States of America Patent
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N/A
Issued Date -
Jun 3, 2021
app pub date -
Feb 9, 2021
filing date -
Feb 9, 2021
priority date (Note) -
Published
status (Latency Note)
Importance
Abstract
An electronic envelope detection circuit includes an input signal detecting circuit having at least one MOS transistor configured to receive a radiofrequency input signal and to deliver an internal signal on the basis of the input signal. The biasing point of the at least one transistor is controlled by the input signal and a control signal. A processing circuit that is coupled to the input signal detecting circuit is configured to deliver a low-frequency output signal on the basis of the internal signal and further deliver the control signal on the basis of the output signal. In operation, the value of the control signal decreases when the average power of the input signal increases, and vice versa.
First Claim
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