Filter with feed-forward AGC

Details Filter with feed-forward AGC Filter with feed-forward AGC

1995-02-03

1996-11-05

Mai, Tan V.

Boots, shoes, and leggings

73900, G06F 738

Patent

active

055724523

ABSTRACT:
A device and method are provided for fully realizing the precision gained internally from a conventional digital signal processor by generating a feed forward automatic gain control (AGC) signal. The feed forward AGC bit is indicative of the output of the digital signal processor being multiplied by a gain factor when the output from the digital filter included in the digital signal processor is below a threshold value. When the feed forward AGC signal is received by an inphase and quadrature (I/Q)-to-(logR/.phi.) converter connected to the digital signal processor, a corresponding value is subtracted from the radius component of the signal calculated by the (I/Q)-to-(logR/.phi.) converter. Because conventional digital signal processors have 16 IO bits, the feed forward AGC signal allows an input signal with a dynamic range and precision exceeding 16 bits to be transferred from the digital signal processor without loosing performance. As a result, a digital signal processor with a fewer number of IO bits than is nominally required for the precision and dynamic range of the output signal is implemented.

REFERENCES:
patent: 4021739 (1977-05-01), Baum et al.
patent: 4439864 (1984-03-01), Qureshi
patent: 4680588 (1987-07-01), Cantwell
patent: 4710772 (1987-12-01), Cantwell et al.
patent: 4801939 (1989-01-01), Jones
patent: 4901333 (1990-02-01), Hodgkiss
patent: 4959619 (1990-09-01), Delacroise et al.
patent: 5134722 (1992-07-01), Emslie et al.
patent: 5204976 (1993-04-01), Baldwin et al.
patent: 5291525 (1994-03-01), Funderburk et al.
patent: 5351016 (1994-09-01), Dent
patent: 5422909 (1995-06-01), Love et al.

Affiliated with

Also associated with

Rating

Filter with feed-forward AGC does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Filter with feed-forward AGC, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Filter with feed-forward AGC will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2020102