Channel selecting apparatus for simultaneous use with both phase

Details Channel selecting apparatus for simultaneous use with both phase Channel selecting apparatus for simultaneous use with both phase

1993-11-02

1996-01-09

Pham, Chi H.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455142, 4551851, 4551922, 4551971, 375216, 375344, H04B 116

Patent

active

054836867

ABSTRACT:
A channel selecting apparatus simultaneously selects both the modulation signals, which are simultaneously received at different channels where modulation signals having a continuous phase and digital modulation signals having a discontinuous phase are located. As both the modulation signals are propagated on the same transmission path or approximately the same inclination of transmission path, modulation signals existing on different channel frequencies suffer approximately similar frequency shift from the transmission path before being inputted to the channel selecting apparatus. Therefore, the frequency of the digitally modulated IF signal can be controlled in accordance with the frequency shift information related to an IF signal having a continuous phase and the frequency of the digitally modulated IF signal may be focused into the comparatively narrow frequency range around the synchronous pull-in frequency of the digital demodulating circuit and the modulation signal having a continuous phase may be focused into the comparatively narrow frequency range around the optimum input frequency of the demodulation circuit.

REFERENCES:
patent: 4339725 (1982-07-01), Ichyoshi
patent: 4817192 (1989-03-01), Phillips et al.
patent: 5107522 (1992-04-01), Kitayama et al.
patent: 5163159 (1992-11-01), Rich et al.
patent: 5289506 (1994-02-01), Kitayama et al.

Affiliated with

Also associated with

Rating

Channel selecting apparatus for simultaneous use with both phase does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Channel selecting apparatus for simultaneous use with both phase, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Channel selecting apparatus for simultaneous use with both phase will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1309706