Multiple bandwidth FM demodulator

Details Multiple bandwidth FM demodulator Multiple bandwidth FM demodulator

1981-10-13

1984-04-03

Grimm, Siegfried H.

Demodulators

Amplitude modulation demodulator

Having specific distortion, noise or other interference...

329137, H03D 306

Patent

active

044410794

ABSTRACT:
A multiple bandwidth quadrature type FM demodulator employs a double-balanced mixer supplied with a frequency modulated IF signal directly and through one of a selectable plurality of bandpass circuits each having a different bandwidth, having a linear phase shift versus frequency characteristic and producing a 90.degree. phase shift at the IF frequency whereby to produce at the output of the mixer a signal level that varies as a linear function of frequency of the input signal, the demodulator including a bias control circuit for the mixer to establish a normalized output for all filters at full bandwidth modulation and further including circuits for establishing a signal balanced with respect to ground or other reference potential regardless of the filter employed.

REFERENCES:
patent: 4066972 (1978-01-01), Ishigaki et al.

Affiliated with

Also associated with

Rating

Multiple bandwidth FM demodulator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multiple bandwidth FM demodulator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multiple bandwidth FM demodulator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-669381