Estimating gain and phase imbalance in upconverting...

Details Estimating gain and phase imbalance in upconverting... Estimating gain and phase imbalance in upconverting...

2008-03-18

2008-03-18

Fan, Chieh M. (Department: 2611)

Pulse or digital communications

Transceivers

C375S140000, C375S261000, C375S298000, C375S316000, C330S002000, C330S107000

Reexamination Certificate

active

07346100

ABSTRACT:
Estimation of gain and phase imbalance of an upconverting transmitter. A transmitter transmits symbols containing vector components of pre-specific relationship in an analog signal. A receiver (also contained in a transceiver along with the transmitter) examines the symbols to determine the phase and gain imbalances in the transmitter based on the analog signal. An aspect of the present invention enables the balance estimation circuit to be integrated along with the transmitter and the receiver into a single monolithic integrated circuit.

REFERENCES:
patent: 5381108 (1995-01-01), Whitmarsh et al.
patent: 2003/0035470 (2003-02-01), Gu
patent: 2003/0223480 (2003-12-01), Cafarella
patent: 2004/0013204 (2004-01-01), Dinur

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