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:
Jul. 18, 1978
Filed:
Sep. 08, 1976
Applicant:
Inventor:
Hiroshi Kosugi, Yokohama, JP;
Assignee:
Hitachi, Ltd., , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03H / ; H03H / ; H03H / ;
U.S. Cl.
CPC ...
333 / ; 333 29 ; 333 76 ;
Abstract
In accordance with the present invention, there is provided an economical and compact frequency sampling filter comprising a comb filter and resonators, in which the difference between the output of a frequency sampling filter of the bandpass type or the low-pass type, or the bandstop type or the high-pass type and the output of a circuit having the same gain as that at each sampling point in the pass band of said filter and having a similarly varying phase to that in the pass band is obtained.