公开(公告)号：US11211678B2

公开(公告)日：2021-12-28

申请号：US16608245

申请日：2018-04-27

申请人： TOKYO KEIKI INC. ,  THE JAPAN STEEL WORKS, LTD. ,  UNIVERSITY OF YAMANASHI

发明人： Naoto Sekiya ,  Takahiro Unno ,  Tsutomu Tsuruoka ,  Kazuhito Kishida ,  Yasuo Sato ,  Noritaka Kitada

IPC分类号： H01P1/203 ,  H01P7/08 ,  H01P7/10

摘要： Provided is a dual-band resonator which can be downsized further than conventional ones. A dual-band resonator is provided with a first conductor and a second conductor. The first conductor is configured to be folded at a first folding part at the center so that both extensions are in a prescribed direction and adjacent to one another with a prescribed space therebetween, wherein a conductor part closer to one end side than the first folding part and a conductor part closer to the other end side than the first folding part are further folded at second folding parts between the one end and the first folding part and between the other end and the first folding part, respectively, in a direction in which the one end and the other end are apart from each other. The second conductor extends in a prescribed direction contiguously to the first folding part of the first conductor. The first conductor constitutes a half-wavelength resonator, and odd-mode resonance occurs in the first conductor. The first conductor and the second conductor constitute a half-wavelength resonator, and even-mode resonance occurs in the first conductor and the second conductor.

公开(公告)号：US09979064B2

公开(公告)日：2018-05-22

申请号：US14808183

申请日：2015-07-24

申请人： UNIVERSITY OF YAMANASHI ,  THE JAPAN STEEL WORKS, LTD.

发明人： Naoto Sekiya ,  Katsuhiro Terao ,  Kazuhito Kishida ,  Yasuo Sato ,  Noritaka Kitada

IPC分类号： H01P1/203 ,  H01P7/08 ,  H01P7/10 ,  H03H7/01 ,  H03H9/24

CPC分类号： H01P1/20309 ,  H01P1/20372 ,  H01P7/082 ,  H01P7/088 ,  H01P7/105 ,  H03H7/0161 ,  H03H9/24 ,  H03H2210/028

摘要： A tunable dual-band resonator and a tunable dual-band band-pass filter using the tunable dual-band resonator. The dual-band resonator is structured such that a stub is added to each half-wavelength resonator provided with half-wavelength resonator protrusions (capacity-component adjust parts). The dual-band resonator is made up of an odd-number mode resonator in a shape including a ground conductor disposed on the back surface of a dielectric body, and a strip conductor disposed on the top surface thereof, and an even-number mode resonator in such a shape as to be formed when the stub is connected to an end face on the opposite side of the open-end of the strip, characterized in that a dielectric rod having a circular cross section is provided in the space above the respective stubs and another dielectric rod having a circular cross section is provided in the space above the half-wavelength resonator protrusions.

公开(公告)号：US11227706B2

公开(公告)日：2022-01-18

申请号：US16033473

申请日：2018-07-12

申请人： UNIVERSITY OF YAMANASHI

发明人： Naoto Sekiya

IPC分类号： H01B12/06 ,  H01F6/06 ,  H01L39/14

摘要： A superconducting wire according to the present disclosure includes: a base material; a superconductor layer formed on each of the respective surfaces of the base material; and a conductive protection layer formed on each of the surfaces of the respective superconductor layers. The thickness of each of the conductive protection layers is 5% or less of the skin depth when a high-frequency current flows through the superconducting wire. The material for forming the conductive protection layer may be, for example, silver.