Title:
TRANSMISSION LINE AND CIRCUIT BOARD, AND HIGH-FREQUENCY DEVICE UTILIZING SAME
Document Type and Number:
WIPO Patent Application WO/2013/147268
Kind Code:
A1
Abstract:
[Problem] To provide a transmission line capable of deterring an insertion loss attributable to a skin depth. Also, to provide a value-added transmission line that utilizes said feature. [Solution] This transmission line comprises conductor layers (A) having a positive magnetic permeability and conductor layers (B) having a negative magnetic permeability. The thicknesses of layers A and layers B are set such that magnetic fluxes of adjoining layers are diminished (cancelled out). Because the magnetic flux density is distributed in accordance with distances from the center such that the density becomes lower toward the center and becomes higher toward the outside, the cancel effect can be improved by setting the thicknesses of the layers thicker toward the center and thinner toward the outside. This circuit board is equipped with a substrate and a transmission line that is provided on the top surface of the substrate, wherein the aforementioned transmission line is used for this transmission line. This high-frequency device is equipped with a transmission line, wherein the aforementioned transmission line is used for this transmission line.
Inventors:
NAKAYAMA HIDETOSHI (JP)
SATO TOSHIRO (JP)
SONEHARA MAKOTO (JP)
YOSHIHARA TAKUMI (JP)
SATO TOSHIRO (JP)
SONEHARA MAKOTO (JP)
YOSHIHARA TAKUMI (JP)
Application Number:
PCT/JP2013/059755
Publication Date:
October 03, 2013
Filing Date:
March 29, 2013
Export Citation:
Assignee:
INST NAT COLLEGES TECH JAPAN (JP)
International Classes:
H01P3/18
Domestic Patent References:
| WO1995006336A1 | 1995-03-02 |
Other References:
YAN ZHUANG ET AL.: "Magnetic-Multilayered Interconnects Featuring Skin Effect Suppression", IEEE ELECTRON DEVICE LETTERS, vol. 29, no. 4, April 2008 (2008-04-01), pages 319 - 321, XP011205798
MASAHIRO YAMAGUCHI ET AL.: "Skin effect suppression in multilayer thin-film spiral inductor taking advantage of negative permeability of magnetic film beyond FMR frequency", PROC. THE 40TH EUROPEAN MICROWAVE CONFERENCE, September 2010 (2010-09-01), pages 1182 - 1185, XP031785391
MASAHIRO YAMAGUCHI ET AL.: "Skin effect suppression in multilayer thin-film spiral inductor taking advantage of negative permeability of magnetic film beyond FMR frequency", PROC. THE 40TH EUROPEAN MICROWAVE CONFERENCE, September 2010 (2010-09-01), pages 1182 - 1185, XP031785391
Attorney, Agent or Firm:
SAEGUSA HIROAKI (JP)
Hiroaki Saegusa (JP)
Hiroaki Saegusa (JP)
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