Method of canceling noise contained in received signal

Details Method of canceling noise contained in received signal Method of canceling noise contained in received signal

2007-12-18

2010-12-28

Vuong, Quochien B (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Noise or interference elimination

C455S067130, C375S346000

Reexamination Certificate

active

07860475

ABSTRACT:
A multiplication section multiplies a signal output from a GPS antenna by a local oscillation signal generated by a local oscillation signal generation section to down-convert the signal output from the GPS antenna into an intermediate-frequency signal. A sampling circuit section samples a generated signal generated by a portable electronic circuit using a sampling clock signal having a frequency lower than a frequency of the generated signal. An attenuation section generates a cancellation signal by attenuating the sampled signal, and an addition section adds the cancellation signal to the signal output from the multiplication section to cancel in-band noise superimposed on the received signal.

REFERENCES:
patent: 2006-145315 (2006-06-01), None

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