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:
Oct. 28, 2003
Filed:
Dec. 08, 2000
Applicant:
Inventors:
Takashi Hasegawa, Kanazawa, JP;
Masakatsu Mori, Ishikawa-ken, JP;
Assignee:
Murata Manufacturing Co., Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01P 1/36 ; H01P 1/365 ;
U.S. Cl.
CPC ...
H01P 1/36 ; H01P 1/365 ;
Abstract
A compact, inexpensive nonreciprocal circuit device which provides a large attenuation in a particular frequency band, and a communication device incorporating the same. A series resonance circuit in which an inductor and a capacitor are connected in series to each other is connected between a first port of a central conductor and the ground, capacitors are connected between the ground and a second and a third ports of other central conductors and the ground, and a terminating resistor is connected to the third port.