Error calculation circuit for mixer

Details Error calculation circuit for mixer Error calculation circuit for mixer

2011-01-25

2011-01-25

Jackson, Blane J (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

C455S063100

Reexamination Certificate

active

07877076

ABSTRACT:
An error calculation circuit used for compensating a carrier leak at an output signal of a mixer has a sign extraction unit for extracting the sign of a baseband signal which is applied to the mixer, an envelope detecting unit for performing envelope detection on the output signal of the mixer, and a signal processing unit for generating an error compensation signal to compensate the carrier leak based on the result of the sign extraction and envelope detection. The signal processing unit preferably calculates the compensation signal by using multiplication of the sign of the baseband signal by an amplitude of the envelope.

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