Receiver local oscillator leakage compensation in the...

Details Receiver local oscillator leakage compensation in the... Receiver local oscillator leakage compensation in the...

2008-12-29

2011-11-29

Zweizig, Jeffrey (Department: 2816)

Telecommunications

Receiver or analog modulated signal frequency converter

Noise or interference elimination

Reexamination Certificate

active

08068804

ABSTRACT:
A ZIF radio compensation method is disclosed. The ZIF radio compensation method employs high gain setting compensation values, which are reliably calculated for low gain settings, during entry of the radio into a communications network. Once the network entry is complete, these coarse calibration values are refined during times when no interfering signal is present. The ZIF radio compensation method allows a receiver to use no additional circuitry to achieve isolation, for potential cost savings. The ZIF radio compensation method further speeds up initial calibration, allowing the radio to join the communications network more rapidly.

REFERENCES:
patent: 5724653 (1998-03-01), Baker et al.
patent: 7558550 (2009-07-01), Brobston et al.
patent: 7929060 (2011-04-01), Yun et al.

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