Apparatus and method for correcting DC offset of receiver in...

Details Apparatus and method for correcting DC offset of receiver in... Apparatus and method for correcting DC offset of receiver in...

2006-10-31

2006-10-31

Jeanglaude, Jean Bruner (Department: 2819)

Coded data generation or conversion

Converter compensation

C341S119000, C341S120000

Reexamination Certificate

active

07129867

ABSTRACT:
A DC offset correction apparatus and method of a receiver in a multiband-hopping communication system is provided. The DC offset correction apparatus of the receiver in the communication system which hops to a plurality of bands, includes a controller for generating and outputting a plurality of DC offset correction signals different from each other for the respective bands; a plurality of digital-to-analog converters (DACs) for receiving, digital-to-analog converting and outputting the plurality of the DC offset correction signals from the controller; an analog multiplexer (MUX) for switching to output one of the plurality of the DC offset correction signals output from the plurality of the DACs, respectively; and an adder for adding and outputting an input signal with the output signal of the analog MUX. Accordingly, the DC offset correction apparatus can be implemented by low-speed DACs and the fast analog MUX that are relatively small-sized and low-cost elements.

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