Frequency modulation system for a frequency synthesizer

Details Frequency modulation system for a frequency synthesizer Frequency modulation system for a frequency synthesizer

1984-05-25

1985-01-15

Grimm, Siegfried H.

Modulators

Amplitude modulator

Nonlinear device controlled by modulating signal

331 36C, 331177V, 332 18, 332 19, 332 30V, 455113, H03C 308, H03C 309

Patent

active

044940904

ABSTRACT:
A voltage controlled oscillator includes a main varactor diode coupled to a frequency resonating circuit to produce an output frequency in response to a control voltage. A secondary varactor diode of an appreciably lower voltage to frequency sensitivity ratio is coupled to the main varactor diode. A modulation input circuit is coupled to the secondary varactor diode to enable modulation of the resonating output frequency. A linearizing circuit is coupled to the secondary varactor diode and tracks the main varactor diode capacitance to continuously adjust the bias voltage of the secondary varactor diode to provide constant carrier modulation deviation.

REFERENCES:
patent: 4378534 (1983-03-01), Goedken et al.
Irvin, "FM Angle Modulator with Frequency Compensated Deviation", IBM Technical Disclosure Bulletin, vol. 21, No. 6, Nov. 1978, pp. 2482-2483.

Affiliated with

Also associated with

Rating

Frequency modulation system for a frequency synthesizer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Frequency modulation system for a frequency synthesizer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Frequency modulation system for a frequency synthesizer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1483424