Wideband microwave frequency divider
AssigneeRCA Corporation
InventorDaniel D. Mawhinney
Life of this patent
Estimating the term…
Abstract
A signal of frequency value F.sub.IN is coupled to a discriminator and to one terminal of a voltage controlled oscillator (VCO) tuned to operate at a range of frequencies about F.sub.IN .div.N where N is a nonunity positive integer. The discriminator produces a voltage proportional to frequency F.sub.IN which is scaled and applied to a control terminal of the VCO to cause it to be tuned to approximately F.sub.IN .div.N. The signal of frequency F.sub.IN applied to the VCO causes it to be injection locked to frequency F.sub.IN .div.N.
Claims6
A frequency divider circuit having an input terminal which is responsive to an input signal of frequency F.sub.IN for producing an output signal at an output terminal of frequency F.sub.IN .div.N, where N is a nonunity positive integer, comprising in combination:
- means responsive to said input signal for producing a voltage signal proportional to the frequency of said input signal;
- a voltage controlled oscillator (VCO) operable over a range of frequencies about F.sub.IN .div.N, said VCO having a control terminal;
- a correlation means coupled to said control terminal and responsive to said proportional signal for applying a voltage to said VCO to tune it to operate at substantially frequency F.sub.IN .div.N, wherein application of the signal F.sub.IN to said VCO causes it to be tuned to produce a signal of frequency F.sub.IN .div.N, and
- means for applying said input signal F.sub.IN to said VCO for injection locking said VCO at F.sub.IN .div.N.
Dependencies are inferred from the claim text.