Radio Frequency Tuner
AssigneeSiTune Corporation
InventorsVahid Mesgarpour Toosi, Mohammad Bagher Vahidfar, Saeid Mehrmanesh
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Abstract
A RF tuner is described for handling RF signals in a broad frequency range and a broad power range while maintaining high linearity and tolerating high power blockers. A continuous feedback loop comprising a substantially linear LNA and a radio frequency RSSI can adjust the power of the RF signal on the RF side. On the IF side, a continuous feedback loop comprising a substantially linear, variable gain transconductor and a RSSI can adjust the power of the IF signal.
Claims19
A method for processing a RF signal in a RF receiver, comprising:
- receiving the RF signal at the RF receiver;
- attenuating the RF signal in a component with an adjustable level of attenuation;
- measuring the power of the signal;
- and
- adjusting the level of attenuation in the component in an analog feedback loop based on the measured power.
An apparatus for processing a RF signal in a RF receiver, comprising:
- an attenuating component that attenuates the RF signal with an adjustable level of attenuation;
- a component for measuring the power of the signal;
- an analog feedback loop that adjusts the level of attenuation in the attenuating component based on the measured power.
Dependencies are inferred from the claim text.