Automatic gain control system for a direct conversion receiver

Telecommunications – Receiver or analog modulated signal frequency converter – Local control of receiver operation

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

330284, 455249, 455324, H03G 320

Patent

active

050955330

ABSTRACT:
A direct conversion receiver having a tri-phase architecture including three separate baseband signal channels. RF communications signals which are being tuned by the receiver are split into three equal and in-phase components which are mixed with three equal but substantially out-of phase injection signals on frequency with the communications signal. The resulting baseband component signals are independently filtered and amplified on the three signal channels. The baseband components are then directed to a signal processing unit which corrects the baseband components for gain or phase mismatch errors between the signal channels based on the information carried by the three components and thereafter demodulates the signals in order to acquire the information carried by the RF communications signal. An automatic gain control system and a signal filtering system adapted for use with direct conversion receivers are also disclosed.

REFERENCES:
patent: 4631738 (1986-12-01), Betts et al.
patent: 4691377 (1987-09-01), Yoshihara et al.
patent: 4715047 (1987-12-01), Hambley
patent: 4829593 (1989-05-01), Hara
patent: 4910797 (1990-03-01), Min et al.
patent: 4926443 (1990-05-01), Reich
patent: 4942591 (1990-07-01), Nease et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Automatic gain control system for a direct conversion receiver does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatic gain control system for a direct conversion receiver, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic gain control system for a direct conversion receiver will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2290590

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.