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Title:
NONRECIPROCAL TRANSMISSION LINE DEVICE AND ANTENNA APPARATUS
Document Type and Number:
WIPO Patent Application WO/2019/172192
Kind Code:
A1
Abstract:
A nonreciprocal transmission line device (10) having mutually different propagation characteristics in forward and backward directions is provided with a plurality of unit cells (20) which are formed on a substrate having first and second surfaces facing each other, and are cascade-connected. Each of the unit cells (20) is provided with a grounded conductor (1) formed on the first surface of the substrate, an electromagnetic wave transmission line portion (11) formed on the second surface of the substrate, and a first parallel branch circuit (12) formed on the second surface of the substrate and equivalently including a capacitive element connected to the transmission line portion (11). Each of the unit cells (20) is magnetized in a magnetization direction different from a direction along the first and second surfaces of the substrate and different from the propagation direction of the transmission line portion (11) and has gyro anisotropy. Each of the first parallel branch circuits (12) is formed on one side of a plane passing through the transmission line portion (11) and formed by the propagation direction and the magnetization direction. The substrate comprises a magnetic substance (15) between each of the first parallel branch circuits (12) and the grounded conductor (1).

Inventors:
UEDA, Tetsuya (1 Matsugasaki Hashikami-cho, Sakyo-ku, Kyoto-sh, Kyoto 85, 〒6068585, JP)
OKAMOTO, Koji (1 Matsugasaki Hashikami-cho, Sakyo-ku, Kyoto-sh, Kyoto 85, 〒6068585, JP)
Application Number:
JP2019/008438
Publication Date:
September 12, 2019
Filing Date:
March 04, 2019
Export Citation:
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Assignee:
NATIONAL UNIVERSITY CORPORATION KYOTO INSTITUTE OF TECHNOLOGY (1 Matsugasaki Hashikami-cho, Sakyo-ku Kyoto-sh, Kyoto 85, 〒6068585, JP)
International Classes:
H01P1/32; H01Q13/20
Domestic Patent References:
WO2015129757A12015-09-03
WO2012115245A12012-08-30
Attorney, Agent or Firm:
YAMAO, Norihito et al. (AOYAMA & PARTNERS, Umeda Hankyu Bldg. Office Tower 8-1, Kakuda-cho, Kita-ku, Osaka-sh, Osaka 17, 〒5300017, JP)
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