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. 21, 2005
Filed:
Dec. 26, 2002
Masayoshi Aikawa, Kanagawa, JP;
Takayuki Tanaka, Saga, JP;
Fumio Asamura, Saitama, JP;
Takeo Oita, Saitama, JP;
Masayoshi Aikawa, Kanagawa, JP;
Takayuki Tanaka, Saga, JP;
Fumio Asamura, Saitama, JP;
Takeo Oita, Saitama, JP;
Other;
Nihon Dempa Kogyo Co., Ltd., Tokyo, JP;
Abstract
A high frequency oscillator has a substrate made of, for example, a dielectric material, a resonator circuit disposed on one principal surface of the substrate and formed of a finite-length coplanar line having a signal line and a ground conductor arranged along the signal line on both sides thereof, a negative resistance element for connecting between the signal line and the ground conductor, and an output line routed on the other principal surface of the substrate and electromagnetically coupled to the resonator circuit through the substrate. A Gunn diode is preferably used for the negative resistance element, and is connected, for example, in a substantially central region of the signal line. The output line preferably forms a microstrip line structure together with the ground conductor.