Apparatus for providing a multi-mode interface between a...

Details Apparatus for providing a multi-mode interface between a... Apparatus for providing a multi-mode interface between a...

2006-02-08

2008-09-30

Tran, Khai (Department: 2611)

Pulse or digital communications

Apparatus convertible to analog

C327S103000

Reexamination Certificate

active

07430235

ABSTRACT:
An apparatus for providing a multi-mode interface between a baseband receiver and radio frequency (RF) circuitry. According to a preferred embodiment of the invention, the apparatus includes a first differential-to-single-ended converter, a second differential-to-single-ended converter and an analog-to-digital converter. The first differential-to-single-ended converter receives an incoming differential current pair to be converted into a first single-ended voltage signal. The second differential-to-single-ended converter receives an incoming differential voltage pair to be converted into a second single-ended voltage signal. Further, the analog-to-digital converter selectively receives an incoming single-ended voltage signal, the first single-ended voltage signal, or the second single-ended voltage signal to be converted into a digital signal to be further processed by the baseband processor. Note that the incoming single-ended voltage signal, as well as the incoming differential voltage and current signal pairs together form the multi-mode interface to the RF circuitry.

REFERENCES:
patent: 5673047 (1997-09-01), Moreland
patent: 5880618 (1999-03-01), Koen
patent: 6810266 (2004-10-01), Ecklund et al.
patent: 2003/0067359 (2003-04-01), Darabi et al.

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