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Patent Searching and Data


Title:
ROTARY JOINT
Document Type and Number:
Japanese Patent JP2007258797
Kind Code:
A
Abstract:

To provide a rotary joint that can eliminate the need for installation of a filter, when there is a need for suppression of unwanted waves of an antenna system.

In the rotary joint, provided with oversize circular waveguides 12a, 12b each inside of which includes a rotary mechanism and coaxial lines 11a, 11b for configuring the input output terminals, the coaxial lines 11a, 11b are structured with the coaxial line of the input terminal and the coaxial line of the output terminal being arranged opposite to each other via the oversized circular waveguides 12a, 12b, and respective inner conductors 13a, 13b of the coaxial line of the input terminal and the coaxial line of the output terminal are extended into the oversized circular waveguides 12a, 12b with a length of about 1/4 wavelength of the harmonic mode of the coaxial lines at a stop band of the passing characteristic.

COPYRIGHT: (C)2008,JPO&INPIT


Inventors:
ARAMAKI YOJI
UCHIDA HIROMITSU
YONEDA HISAFUMI
MANO SEIJI
ONO KAZUHISA
YABE JINYA
Application Number:
JP2006077025A
Publication Date:
October 04, 2007
Filing Date:
March 20, 2006
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP
TAIYO MUSEN CO LTD
International Classes:
H01P1/06; H01P1/212; H01P7/00
Domestic Patent References:
JP2002232201A
JPH10163701A
Attorney, Agent or Firm:
曾我 道照
曾我 道治
古川 秀利
鈴木 憲七
梶並 順