Signal communication device operable in a CDMA mode and an FM mo

Details Signal communication device operable in a CDMA mode and an FM mo Signal communication device operable in a CDMA mode and an FM mo

1994-09-22

1999-03-02

Pham, Chi H.

Pulse or digital communications

Receivers

375342, 370319, 455207, 4551801, H03K 900, H03L 2706, H03L 2714, H03L 2722

Patent

active

058780874

ABSTRACT:
In a dual CDMA mode and FM mode receiver, a local oscillator selectively outputs a local oscillation signal for a CDMA mode or a local oscillation signal for an FM mode in response to a command. A mixer mixes the local oscillation signal with an intermediate frequency signal to produce a signal having a predetermined frequency. Filters assigned to a CDMA mode and an FM mode, respectively, each filters the output of the mixer. After an AGC amplifier has amplified the output of the filter, a digital signal processor demodulates the output of the amplifier. Switches are provided for selecting either a CDMA mode or an FM mode.

REFERENCES:
patent: 4748642 (1988-05-01), Bertsche
patent: 4944025 (1990-07-01), Gehring
patent: 5150377 (1992-09-01), Vannucci
patent: 5291516 (1994-03-01), Dixon et al.
"Mobile Station-Base Station Compatibility Standard for Dual-Mode Wideband Spread Spectrum Cellular System", by Telecommunications Industry Association, Jul. 1993, pp. vii-xxxi and 6-1 to 7-42.

Affiliated with

Also associated with

Rating

Signal communication device operable in a CDMA mode and an FM mo does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Signal communication device operable in a CDMA mode and an FM mo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Signal communication device operable in a CDMA mode and an FM mo will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-429591