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. 13, 2006
Filed:
Dec. 26, 2002
Masayoshi Aikawa, Yokohama, JP;
Takayuki Tanaka, Saga, JP;
Fumio Asamura, Saitama, JP;
Takeo Oita, Saitama, JP;
Masayoshi Aikawa, Yokohama, JP;
Takayuki Tanaka, Saga, JP;
Fumio Asamura, Saitama, JP;
Takeo Oita, Saitama, JP;
Masayoshi Aikawa, Kanagawa, JP;
Nihon Dempa Kogyo Co., Ltd., Tokyo, JP;
Abstract
A high frequency oscillator has a substrate, a resonator circuit which is disposed on one principal surface of the substrate and consists of a closed loop-shaped slot line including an inner conductor and an outer conductor, an electric boundary point set on the slot line, a two-port negative resistance element for connecting between the inner conductor and outer conductor, and an output line electrically connected to the slot line. The electric boundary point is set by connecting, for example, a stub to the resonator circuit. The stub functions as an electrically short-circuited end or an electrically open end. A Gunn diode is preferably used for the negative resistance element, and inserted at a position of the slot line resonator circuit at which impedance matching is achieved.