Modulators – Amplitude modulator – Nonlinear device controlled by modulating signal
Patent
1983-12-13
1985-11-19
Grimm, Siegfried H.
Modulators
Amplitude modulator
Nonlinear device controlled by modulating signal
331 2, 331 15, 331 23, 332 19, 332 21, 455 44, 455113, H03C 308, H03C 309
Patent
active
045545170
ABSTRACT:
A phase lock loop having an instruction input to which is applied the output signal of the frequency-modulated variable frequency oscillator. The pass band of the loop is regulated in order to obtain at its output, a frequency-filtered signal corresponding to the frequency-modulated signal applied to the instruction input. A phase demodulator having inputs coupled to the instruction input of the loop and to the output of the loop supplies a signal corresponding to the modulation index of the signal supplied by the oscillator. This signal is compared with a reference signal by a comparator circuit, which supplies a control signal to means for adjusting the amplitude of the modulating signal applied to the input of the oscillator, in order to permanently adjust the modulation index of the frequency-modulated signal, produced at the output of the oscillator, to the value of the desired modulation index corresponding to the reference signal.
REFERENCES:
patent: 3396340 (1968-08-01), Black et al.
patent: 4027264 (1977-05-01), Gutleber
patent: 4125817 (1978-11-01), Bagdasarjanz et al.
patent: 4282497 (1981-08-01), Hulbert
Bazenant Dominique
Parniere Alain
"Thomson-CSF"
Grimm Siegfried H.
LandOfFree
Device for the automatic linearization of the control signal-fre does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for the automatic linearization of the control signal-fre, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for the automatic linearization of the control signal-fre will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-85967