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:
Apr. 05, 2001
Toshihiro Makino, Nagaokakyo, JP;
Hiroki Dejima, Nagaokakyo, JP;
Takashi Kawanami, Nagaokakyo, JP;
Toshihiro Yamamoto, Nagaokakyo, JP;
Murata Manufacturing Co., Ltd., Kyoto, JP;
Abstract
The present invention provides a nonreciprocal circuit device which allows the relationship between the input and the output to be reversed using the identical terminal layout on a mounting substrate, only by preparing for a single type of nonreciprocal circuit device, and also provides a communication apparatus using this nonreciprocal circuit device. In this reciprocal circuit device, a plurality of centeral conductors are disposed on a ferrite on which DC magnetic field is to be applied, in a state of intersecting one another, matching capacitors are each connected between the ports of the centeral conductors and grounds, and a terminating resistor is connected between a predetermined port and a ground. In a resin case , input/output terminals which are conductively connected to the respective ports are disposed at substantially rotation-symmetrical positions with respect to the center of the bottom surface of the resin case.