Method and apparatus for increasing receiver immunity to interfe

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

4552262, 4552341, 4552401, H04B 110, H03G 320

Patent

active

057220611

ABSTRACT:
A method for adjusting the gain of a receive circuit, thereby improving a receiver's immunity to interference. The circuit has an LNA which amplifies the received signal. The receive signal power is controlled by enabling or disabling the LNA in response to the measured received signal power. The received power level is periodically compared to a threshold. When the received power level is greater than the threshold, the LNA is disabled. The LNA is re-enabled when the received power level is less than the threshold, and there are no significant intermodulation components detected. The intermodulation components are detected by briefly enabling the LNA and detecting the resultant change in the measured signal power. If the detected change is more than a predetermined amount, then there are significant intermodulation components present, and the LNA is not re-enabled. Otherwise, there are not significant intermodulation components present, and the LNA is re-enabled.

REFERENCES:
patent: 4656630 (1987-04-01), Miyo
patent: 4876741 (1989-10-01), Jacobs et al.
patent: 4989074 (1991-01-01), Matsumoto
patent: 5119508 (1992-06-01), Shamaundara
patent: 5184349 (1993-02-01), Riordan
patent: 5465408 (1995-11-01), Sugayama et al.
patent: 5563916 (1996-10-01), Scarpa
patent: 5594760 (1997-01-01), Guillaud 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

Method and apparatus for increasing receiver immunity to interfe does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for increasing receiver immunity to interfe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for increasing receiver immunity to interfe will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1883544

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