Power control loop and LO generation method

Details Power control loop and LO generation method Power control loop and LO generation method

2006-02-27

2009-06-09

Anderson, Matthew D (Department: 2618)

Telecommunications

Transmitter and receiver at separate stations

Plural transmitters or receivers

C455S114200, C455S114300, C455S115100, C455S127100, C375S296000, C375S254000, C370S282000

Reexamination Certificate

active

07546137

ABSTRACT:
A method for use in a RFID reader, the method comprising providing an output signal from an amplifier of a transmitter, attenuating the output signal via a step attenuator, detecting and comparing the attenuated output signal to a reference value, and adjusting power to the amplifier until the attenuated output signal is substantially equal to the reference value. The attenuated output signal drives a local oscillator signal of a receiver thereby canceling noise generated by the transmitter in the receiver.

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