Offset-frequency loop-back calibration

Details Offset-frequency loop-back calibration Offset-frequency loop-back calibration

2006-09-18

2010-02-02

Yun, Eugene (Department: 2618)

Telecommunications

Transmitter and receiver at separate stations

Having measuring, testing, or monitoring of system or part

C455S067130, C455S275000, C455S063100

Reexamination Certificate

active

07657232

ABSTRACT:
Embodiments of methods and means for calibrating a linearization characteristic within an RF transceiver system are provided. Such embodiments generally include extracting a portion of an output signal and frequency shifting or translating that signal by a predetermined value. The frequency shifted signal is then summed or otherwise introduced into a receiver signal pathway where it is analyzed by digital signal processing or other means to determine if linearization distortion is present. Linearization calibration of a power amplifier, a low-noise amplifier and/or other functionality within the system can then be performed in an automatic, reliable and ongoing manner.

REFERENCES:
patent: 6996375 (2006-02-01), Dent et al.

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