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. 22, 1994
Filed:
Sep. 04, 1992
Applicant:
Inventor:
Yoshiyasu Tsuruoka, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01P / ; H03F / ;
U.S. Cl.
CPC ...
333246 ; 330279 ; 330297 ;
Abstract
In a bias circuit including a transmission line and an open stub for preventing a microwave signal from passing through, the lengths of the open stub and a transmission line between the open stub and main transmission line are near .lambda./4 but not equal to .lambda./4. A leakage signal caused by the above deviations is fed to a detector portion. In the above construction, circuit size of the bias circuit and the detector portion is minimized.