Calibration circuit and method thereof

Details Calibration circuit and method thereof Calibration circuit and method thereof

2007-08-21

2007-08-21

Deb, Anjan (Department: 2858)

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Calibration

C324S620000

Reexamination Certificate

active

11325512

ABSTRACT:
A calibration circuit and method thereof. In the example method, a common-mode voltage may be detected at an output port of a mixer. At least one common-mode feedback voltage may be generated (e.g., at one or more common-mode feedback circuits) based on the detected common-mode voltage. A loop gain may be adjusted in response to a gate control signal (e.g., received at a controller, such as a second order Intecept Point (IP2) controller). An impedance may be adjusted at the output port of the mixer and a current applied to the output port of the mixer may be adjusted based on the at least one common-mode feedback voltage. The example method may be performed by a calibration circuit (e.g., an IP2 calibration circuit).

REFERENCES:
patent: 5613233 (1997-03-01), Vagher
patent: 5768700 (1998-06-01), Kardontchik
patent: 6026286 (2000-02-01), Long
patent: 2002-141751 (2002-05-01), None
patent: 2004-104515 (2004-04-01), None

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