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US 10,873,486 B1Granted
Receiver circuits with blocker attenuating RF filter
AssigneeGoodix Technology Inc.
InventorsMohamed Aboudina, Ahmed Emira, Esmail Babakrpur Nalousi
Life of this patent
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Abstract
A receiver circuit is disclosed. The receiver circuit includes an amplifier configured to generate an RF signal based on a received signal, where the RF signal includes an information signal and a blocker signal modulating an RF carrier frequency. The receiver circuit also includes an RF filter connected to the amplifier, where the RF filter is configured to selectively attenuate the blocker signal.
Claims14
A receiver circuit, comprising:
- an amplifier configured to generate an RF signal based on a received signal, wherein the RF signal comprises an information signal and a blocker signal modulating an RF carrier frequency;
- an RF filter connected to the amplifier, wherein the RF filter is configured to selectively attenuate the blocker signal in response to a control signal;
- and
- another circuit configured to detect an indication of the blocker signal, and to generate the control signal in response to the indication being detected, wherein the other circuit comprises a variable gain amplifier configured to generate a clipped output signal in response to one or more signals at the variable gain amplifier exceeding an input or output range limit.
1 more element
A method of operating a receiver circuit, the receiver circuit comprising:
- an amplifier;
- an RF filter connected to the amplifier;
- and
- another circuit comprising a variable gain amplifier,
- the method comprising:
- with the amplifier, generating an RF signal based on a received signal, wherein the RF signal comprises an information signal and a blocker signal modulating an RF carrier frequency;
- with the RF filter, selectively attenuating the blocker signal with the RF filter, attenuating the blocker signal in response to a control signal;
- with the other circuit, detecting an indication of the blocker signal;
- and
- with the other circuit, generating the control signal in response to the indication being detected;
- and
- with the variable gain amplifier, generating a clipped output signal in response to one or more signals at the variable gain amplifier exceeding an input or output range limit.
9 more elements
Dependencies are inferred from the claim text.