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Title:
COPLANAR FILTER AND METHOD OF FORMING SAME
Document Type and Number:
Japanese Patent JP2005253042
Kind Code:
A
Abstract:

To provide a coplanar filter and method of forming the same in which an increase of a power loss is avoided by reducing a maximum current density in a resonator in a structure where the accuracy of design is easily maintained, and the destruction of a superconductive state can be prevented even if a conductor is comprised of a superconductive material.

In a coplanar filter comprising coplanar resonators comprised of dielectric substrates, center conductors and ground conductors formed on the dielectric substrate and coplanar input/output terminal sections coupled with the resonator via a coupling part, one of a ground conductor spacing and a center conductor line width in the coplanar resonator is made to be greater than a corresponding ground conductor spacing or center conductor line width in each of the input/output terminal sections.


Inventors:
SATO KEI
NARAHASHI SHOICHI
HIROTA TETSUO
YAMAO YASUSHI
Application Number:
JP2004000259685
Publication Date:
September 15, 2005
Filing Date:
September 07, 2004
Export Citation:
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Assignee:
NTT DOCOMO INC
International Classes:
H01P1/203; H01P1/201; H01P7/08; (IPC1-7): H01P1/203; H01P7/08
Attorney, Agent or Firm:
草野 卓
稲垣 稔
中村 幸雄