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:
Jun. 17, 2003
Filed:
Apr. 17, 2001
Applicant:
Inventor:
Yasuhiro Ikarashi, Fukushima-ken, JP;
Assignee:
Alps Electric Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03B 5/18 ;
U.S. Cl.
CPC ...
H03B 5/18 ;
Abstract
A voltage controlled oscillator includes an oscillating transistor having a collector coupled to ground at high frequencies. A first end of a microstrip is coupled to a base of the oscillating transistor by a first varactor diode. A second end of the microstrip is coupled to a second varactor diode. The length of the microstrip is about ½ to about ¾ of the wavelength of an oscillation frequency.