Modulators – Amplitude modulator – Nonlinear device controlled by modulating signal
Patent
1975-05-01
1976-09-21
Grimm, Siegfried H.
Modulators
Amplitude modulator
Nonlinear device controlled by modulating signal
331 96, 331107G, 331177V, H03C 322
Patent
active
039822117
ABSTRACT:
The present invention relates to a frequency modulated oscillator, preferably operating within the microwave range, comprising a resonator having a reversed biased semi-conductor element, for example, a Gunn diode and voltage dependent capacitor, for example a varactor diode acting as a frequency modulator and being connected to a modulating signal source. In order to linearize the modulation characteristic, there is a resonant circuit in the resonator which circuit is tuned to the first harmonic 2fo of the unmodulated fundamental frequency fo of the oscillator. When modulating the varactor diode the resonant circuit becomes detuned and the voltage across the Gunn diode is changed so that its capacitance is also changed to change the fundamental frequency fo which compensates the non-linear change in the modulation characteristic of the varactor diode.
REFERENCES:
patent: 3711792 (1973-01-01), Kaneko et al.
patent: 3747032 (1973-07-01), Hall et al.
patent: 3820039 (1974-06-01), Farrer
Grimm Siegfried H.
Telefonaktiebolaget L M Ericsson
LandOfFree
Linearized varactor frequency modulated semi-conductor diode osc does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Linearized varactor frequency modulated semi-conductor diode osc, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Linearized varactor frequency modulated semi-conductor diode osc will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1416606