Title:
伝送線路、配線基板、及び、これらを用いた高周波装置、並びに、伝送線路の設計方法
Document Type and Number:
Japanese Patent JP6693655
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a transmission line capable of suppressing the insertion loss due to the skin depth, and to provide a value-added transmission line utilizing this properties.SOLUTION: A transmission line is constituted of a conductor layer A having a positive permeability, and a conductor layer B having a negative permeability. The thicknesses of the layer A and layer B are set so that the magnetic fluxes of adjoining layers are diminished (cancelled). Since the flux density is distributed by the distance from the position of center, such that the flux density is small in the center and increases toward the outside, cancellation effect of the magnetic flux can be increased by making the layer thicker toward the center and thinner toward the outside. An evaluation index, such as the loss rate Loss, is calculated when the thickness is changed so that the ratio of a material of higher resistivity is decreased after the thickness of each layer was set temporarily, and the thickness of each layer, where the evaluation index is in a suitable range, is determined.SELECTED DRAWING: Figure 1
Inventors:
Hidetoshi Nakayama
Toshiro Sato
Makoto Sonehara
Takumi Yoshihara
Shiro Kawakubo
Kiyono Yuki
Yuzawa Ryobu
Toshiro Sato
Makoto Sonehara
Takumi Yoshihara
Shiro Kawakubo
Kiyono Yuki
Yuzawa Ryobu
Application Number:
JP2016073215A
Publication Date:
May 13, 2020
Filing Date:
March 31, 2016
Export Citation:
Assignee:
National Institute of Technology
International Classes:
H01P3/06; H01P3/08; H01P11/00
Foreign References:
| WO2013147268A1 | ||||
| US20060267705 |
Other References:
山口 他,負透磁率強磁性体と導体との多層膜によるRFデバイスの表皮効果抑制法,MWE2008 Microwave Workshop Digest,2008年,p.207-210
Attorney, Agent or Firm:
Hiroaki Saegusa