Voltage-controlled oscillator
AssigneeGeneral Dynamics Decision Systems, Inc.
InventorsMichael N. Pickett, Robert H. Bickley
Life of this patent
Estimating the term…
Abstract
A voltage-controlled oscillator in which a tunable resonator (102) having a first port (132) and a second port (106) is disclosed. In one embodiment, the tunable resonator is a series resonating circuit having low driving and load impedances. A power gain element (108) is coupled to the first port and the second port, and an output port (110) is coupled to the power gain element and the second port. The first impedance at the first and second ports is less than approximately ten ohms. The voltage-controlled oscillator is capable of generating a signal at the output port of greater than approximately half a watt.
Claims20
A voltage-controlled oscillator comprising:
- a tunable resonator having a first port and a second port;
- a power gain element coupled to the first port and the second port;
- an output port coupled to the power gain element and the second port,
- wherein:
- the first impedance at the first and second ports is less than approximately ten ohms;
- and
- the voltage-controlled oscillator is capable of generating a signal at the output port of greater than approximately 0.5 watts.
A voltage-controlled oscillator comprising:
- a first varactor diode;
- a second varactor diode coupled in series to the first varactor diode in a back-to-back configuration;
- a first capacitor coupled in series to the second varactor diode;
- a second capacitor coupled in parallel with the first varactor diode, the second varactor diode, and the first capacitor;
- a first transformer coupled to the first and second capacitors;
- a second transformer coupled to the first transformer;
- a third capacitor coupled to the second transformer;
- an output port coupled to the third capacitor and the second transformer;
- an inductor coupled in series to the second capacitor and the first varactor diode;
- a bias circuit;
- and
- a transistor having a first terminal coupled in series to the inductor, a second terminal coupled in series to the bias circuit, and a third terminal coupled in series to the third capacitor.
Dependencies are inferred from the claim text.