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:
Dec. 22, 1981
Filed:
Oct. 12, 1979
Applicant:
Inventors:
Keiro Shinkawa, Yokohama, JP;
Chuichi Sodeyama, Yokohama, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03B / ; H03B / ;
U.S. Cl.
CPC ...
331 99 ; 3311 / ; 3311 / ; 333219 ;
Abstract
A microwave oscillator circuit comprises a micro-strip line having a substrate of a dielectric material, a semiconductor such as a Gunn diode or an FET, and a dielectric resonator connected to the micro-strip line as a resonator circuit. A hole is formed in the substrate beside the micro-strip line, or the substrate is cut off to provide a recess. Through this hole or recess, as the case may be, the dielectric resonator is directly secured to the metal casing supporting the micro-strip line on the opposite side thereof or to the grounding conductor of the micro-strip line.