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. 07, 2000
Filed:
Mar. 13, 1998
Applicant:
Inventor:
Shin Watanabe, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01P / ;
U.S. Cl.
CPC ...
333 / ; 257537 ;
Abstract
A variable attenuator includes a resistance region, a signal line to which the resistance region is connected, a very high frequency signal being propagated through the signal line, and a voltage applying part which applies a dc voltage across the ends of the resistance region, the dc voltage controlling a magnitude of attenuation to the very high frequency signal.