The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 15, 2000
Filed:
Aug. 10, 1998
Shinji Goma, Komatsu, JP;
Takeshi Kataya, Komatsu, JP;
Murata Manufacturing Co., Ltd., Nagaokakyo, JP;
Abstract
A voltage controlled oscillation circuit includes a resonance circuit and an oscillation circuit. The oscillation circuit includes a capacitor, a variable capacitance diode, and a resonator composed of a strip line one end of which is grounded. The oscillation circuit includes an oscillation transistor, bias resistors, and, a Colpitts capacitor, a harmonic bypass capacitor, and a chip capacitor, one end of which is connected in series with a resistor and the other end of which is grounded. A node between the bias resistor and the chip capacitor connects the resonator composed of a strip line provided within the resonance circuit via a connection line, whereby the emitter of the oscillation transistor provided within the resonance circuit is grounded via the bias resistor and the resonator. In addition, a parallel resonance circuit is composed of the resonator and the chip capacitor.