FM Modulator using an oscillating feedback circuit

Modulators – Amplitude modulator – Nonlinear device controlled by modulating signal

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

331135, 332 23R, H03C 302

Patent

active

045688923

ABSTRACT:
A frequency modulating circuit for modulating a carrier signal by a modulating signal is disclosed which includes a band-pass filter of biquad type having a first integrating circuit and a second integrating circuit, an output of the first integrating circuit being supplied to an input terminal of the second integrating circuit and an output of the second integrating circuit being supplied to an input terminal of the first integrating circuit and a second input terminal of the second integrating circuit, and a limiting amplifier circuit supplied with the output signal of the band-pass filter and the output thereof being positively fed back to the band-pass filter. In this case, the modulating signal is supplied to the first and second integrating circuits such that the center frequency of the band-pass filter is linearly controlled by the modulating signal whereby a frequency modulated signal modulated by the modulating signal is led out of the output terminal of the second integrating circuit.

REFERENCES:
patent: 4459566 (1984-07-01), Lane

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

FM Modulator using an oscillating feedback circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with FM Modulator using an oscillating feedback circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and FM Modulator using an oscillating feedback circuit will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2343258

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