VOLTAGE CONTROLLED OSCILLATOR MULTIPLIER
First Claim
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1. A voltage controlled oscillator-multiplier comprising:
- an oscillator circuit for generating a fundamental frequency of oscillations;
a band pass filter for passing a desired frequency band;
a tuning varactor diode circuit coupled across the output of said oscillator and coupled to the input of said band pass filter to multiply the frequency generated by said oscillator and to pass the desired frequency; and
an adjustable direct current biasing voltage source coupled across said varactor diode for adjustably controlling the said fundamental frequency by varying the capacitive reactance thereof which diode at the same time produces frequency multiplication.
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Abstract
A voltage controlled oscillator and varactor multiplier circuit having a varactor network coupling the output of an oscillator through a band pass filter to an output in which a single varactor produces frequencies tuned by varying the bias thereon and produces frequency multiplication.
7 Citations
4 Claims
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1. A voltage controlled oscillator-multiplier comprising:
- an oscillator circuit for generating a fundamental frequency of oscillations;
a band pass filter for passing a desired frequency band;
a tuning varactor diode circuit coupled across the output of said oscillator and coupled to the input of said band pass filter to multiply the frequency generated by said oscillator and to pass the desired frequency; and
an adjustable direct current biasing voltage source coupled across said varactor diode for adjustably controlling the said fundamental frequency by varying the capacitive reactance thereof which diode at the same time produces frequency multiplication.
- an oscillator circuit for generating a fundamental frequency of oscillations;
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2. A voltage controlled oscillator-multiplier as set forth in claim 1 wherein said tuning varactor diode circuit includes a capacitor in series with said varactor with the anode of said varactor coupled to the output of said oscillator and said capacitor coupled to a fixed potential in common with said oscillator and said band pass filter.
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3. A voltage controlled oscillator-multiplier as set forth in claim 2 wherein said adjustable direct current biasing voltage source is a variable voltage applied through an inductance to the cathode of said varactor diode.
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4. A voltage controlled oscillator-multiplier as set forth in claim 3 wherein said tuning varactor diode circuit includes at least one idler to raise the gain in multiplication and to reduce the noise of said desired frequency.
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Current AssigneeHarry F. Egbert, James R. Falls Jr
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Original AssigneeHarry F. Egbert, James R. Falls Jr
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InventorsEgbert, Harry F., Falls, James R. Jr.
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Primary Examiner(s)Kominski, John
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Application NumberUS05/118,274Time in Patent Office440 DaysField of Search331/117D,117,36C,53,177V 334/15 321/69NLUS Class Current331/117.00RCPC Class CodesH03B 19/05 using non-linear capacitanc...
