Analog circuit for baseband modem

Details Analog circuit for baseband modem Analog circuit for baseband modem

1994-05-23

1996-04-02

Chin, Stephen

Pulse or digital communications

Transceivers

Modems

370 321, 379406, H04B 138

Patent

active

055047785

ABSTRACT:
So as to be directly connected to the predefined logic circuit PLC to form a baseband modem, the analog circuit BBAC is monolithically integrated in accordance with the CMOS technology, using switched-capacitor filters which are driven by only one clock. The automatic equalizer EGA is likewise designed from switched-capacitor filters, equalization being obtained by variable and symmetrical clipping of the signals. In these conditions the modem can operate automatically in a very wide range of data rates.

REFERENCES:
patent: 4607231 (1986-08-01), Nakawama
patent: 4686686 (1987-08-01), Nakayama et al.
patent: 4689805 (1987-08-01), Pyhalammi et al.
patent: 4768205 (1988-08-01), Nakayama
patent: 5297163 (1994-03-01), Pfeiffer
"Commutation et Transmission" No. 1, 1985.

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