Signal DC offset correction method and device

Details Signal DC offset correction method and device Signal DC offset correction method and device

2006-10-10

2006-10-10

Ghebretinsae, Temesghen (Department: 2611)

Pulse or digital communications

Receivers

Automatic baseline or threshold adjustment

C375S130000, C327S307000

Reexamination Certificate

active

07120206

ABSTRACT:
A method and a device for estimating the DC offset portion of a signal, especially of a signal containing parts with sinusoidal shape, for example a signal which results from demodulation of a frequency modulated receive signal. A method is presented for correcting the direct current offset portion (DC offset) of a first signal which includes phase shifting the first signal for obtaining a second signal and comparing the first signal and the second signal with an estimated DC offset. The estimated DC offset is adjusted if the result of the comparison is that the first signal and the second signal are on different sides of the estimated DC offset and the estimated DC offset remains constant as long as the result of the comparison is that the first signal and the second signal are on the same side of the estimated DC offset.

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Analog Wide Band Audio Phase Shift Networks. Peter C. McNulty, WA1SOV□□http://home.att.net/˜wa1sov/technical/allpass/allpass.html.

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