Down-converter and calibration method thereof

Details Down-converter and calibration method thereof Down-converter and calibration method thereof

2006-09-05

2009-06-02

Le, Lana N (Department: 2614)

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

C455S067110, C455S226100, C455S323000, C327S113000, C327S359000

Reexamination Certificate

active

07542751

ABSTRACT:
A mixer and calibration method thereof are provided. A direct conversion receiver comprises a differential loading pair utilizing at least one binary weighted resistor. The binary weighted resistor is adjustable to provide a resistance linear to a digital code, comprising a fixed resistor and an adjustable resistor cascaded to the fixed resistor in parallel. Every increment of the digital code induces an equal increment of the resistance. The magnitude of every incremental resistance is below a negligible ratio of the fixed resistor.

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patent: 2005/0170806 (2005-08-01), Kim

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