Re-tuning device comprising a switching mixer stage and a tuning

Details Re-tuning device comprising a switching mixer stage and a tuning Re-tuning device comprising a switching mixer stage and a tuning

1984-07-06

1986-05-20

Ng, Jin F.

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

455326, 455333, H04B 126

Patent

active

045906165

ABSTRACT:
RF-tuning device comprising a switching mixer stage (M) and a tuning oscillator (O) coupled thereto. According to the invention, so as to reduce the noise contribution of the mixer stage (M) without increasing the oscillator radiation, the slew rate of the oscillator switching signal applied to the mixer stage (M) is increased by connecting bistable trigger circuit between the tuning oscillator and the mixing stage. Under the control of the tuning oscillator, the bistable trigger circuit generates a substantially square-wave output signal.

REFERENCES:
patent: 3665343 (1972-05-01), Thompson
patent: 4268916 (1981-05-01), Kusakabe
patent: 4313221 (1982-01-01), Mattfeld
patent: 4385401 (1983-05-01), Jagnow et al.
"An Automatic Equalizer for Echo Reduction in Teletext on a Single Chip", by Voorman et al., Philips Technical Review, vol. 40, 1982, No. 11/12.
"Philips Data Handbook" C2, No. 12, 1982, TV-Tuners, Video Modulators and Saw-Filters, pp. 141-143.

Affiliated with

Also associated with

Rating

Re-tuning device comprising a switching mixer stage and a tuning does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Re-tuning device comprising a switching mixer stage and a tuning, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Re-tuning device comprising a switching mixer stage and a tuning will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2113119