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:
Mar. 19, 2002
Filed:
Aug. 30, 2000
Yasuhiro Ikarashi, Fukushima-ken, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
There is provided a voltage-controlled oscillator which prevents generation of an irregular oscillation signal, reduces the number of parts including large size elements, realizes reduction in size of structure and easily adjusts output level of the oscillation signal. An oscillating transistor which operates in a grounded base system to output an oscillation signal, an amplifying transistor which operates in a grounded emitter system to amplify the oscillation signal and a resonance circuit connected to the collector of the oscillating transistor are provided. The resonance circuit is provided with a resonance micro-strip line with an intermediate tap connected in a DC circuit provided between the collector of the oscillating transistor and the emitter of the amplifying transistor and a resonance capacitor connected between the collector of the oscillating transistor and the ground point, and a coupling capacitance to transmit the oscillation signal is connected between the intermediate tap of the resonance micro-strip line and the base of the amplifying transistor.