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US 2006/0223471 A1Published application
Receiver having a gain cancelling amplifier
OwnerScott Dupuie, Charles Thompson +1inventors
InventorsScott Dupuie, Charles Thompson, Andrew Dornbusch
Life of this patent
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Abstract
A technique includes applying a first gain to a first radio frequency signal to generate a second radio frequency signal, and the technique includes generating an intermediate frequency signal in response to the second radio frequency signal. In response to a change occurring in the first gain, a second gain that is applied to the intermediate frequency signal is changed to cancel at least some of the change in the first gain.
Claims26
A method comprising:
- applying a first gain to a first radio frequency signal by a first gain to generate a second radio frequency signal;
- generating an intermediate frequency signal in response to the second radio frequency signal;
- and
- in response to a change to the first gain, changing a second gain that is applied to the intermediate frequency signal to cancel at least some of the change in the first gain.
1 more element
A method comprising:
- in response to a strength of a radio frequency signal, controlling a gain of an amplifier in a radio frequency section of a receiver;
- and
- inversely varying a gain of an amplifier in an intermediate frequency section of the receiver with respect to a variation of the gain of the amplifier in the radio frequency section of the receiver.
A receiver comprising:
- a radio frequency section comprising an amplifier to establish a gain in the radio frequency section in response to a strength of a radio frequency signal received by the RF section;
- and
- an intermediate frequency section coupled to the RF section comprising an amplifier having a gain that inversely varies with respect to a variation in the gain of the amplifier in the radio frequency section.
A receiver associated with a first radio service provider, the receiver comprising:
- a radio frequency section to determine the strength of spectral energy received from the first radio service provider and regulate a gain of a first amplifier of the radio frequency section in response to the determined strength, the determined strength capable of being in error due to reception of additional spectral energy associated with a second radio service provider;
- and
- an intermediate frequency section comprising a second amplifier, the second amplifier having a gain that inversely varies with respect to a variation in the gain of the first amplifier to reduce an overall gain sensitivity of the receiver to said additional spectral energy associated with the second radio service provider.
Dependencies are inferred from the claim text.