Method and apparatus for compensating for mismatch occurring...

Details Method and apparatus for compensating for mismatch occurring... Method and apparatus for compensating for mismatch occurring...

2007-04-24

2010-10-12

Phu, Phuong (Department: 2611)

Pulse or digital communications

Equalizers

Automatic

C375S219000, C375S222000, C375S261000, C375S298000, C332S103000

Reexamination Certificate

active

07813424

ABSTRACT:
A method and apparatus for compensating for a mismatch in a radio frequency (RF) quadrature transceiver using a direct-conversion scheme is provided. The method includes setting an amplification gain for a baseband quadrature signal to be larger than an amplification gain for a baseband in-phase signal in a reception module; receiving only a baseband in-phase signal in a transmission module; and compensating for a phase mismatch on a basis of a signal output from a quadrature output port. The apparatus includes a phase mismatch compensator which sets an amplification gain for a baseband quadrature signal to be larger than an amplification gain for a baseband in-phase signal in a reception module, inputs only a baseband in-phase signal to a transmission module, and compensates for a phase mismatch on a basis of a signal output from a quadrature output port.

REFERENCES:
patent: 5771263 (1998-06-01), Kanazawa et al.
patent: 7412006 (2008-08-01), Talwalkar et al.

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