公开(公告)号：US20210181123A1

公开(公告)日：2021-06-17

申请号：US17117701

申请日：2020-12-10

Applicant: UNIVERSITY OF MANITOBA

Inventor： Can-Ming Hu ,  Yi-Pu Wang ,  Yongsheng Gui ,  Mun Kim

IPC: G01N22/00 ,  H01F1/34 ,  H01P3/08 ,  H05K1/02 ,  H01Q7/00

Abstract: A device for unidirectional propagation of microwaves comprises a resonant microwave structure arranged to transmit microwaves between two ports and a magnetic source arranged to provide a generally static magnetic field and to have a resonant frequency distinct from that of the microwave structure, which is disposed adjacent the microwave structure so as to be located in presence of electromagnetic fields emanating from the transmitted microwaves such that the magnetic field interacts with the electromagnetic fields of the microwaves so as to form a set of hybridized resonant frequencies at which zero intrinsic damping exists, one of the set of hybridized resonant frequencies being a real eigenvalue providing the unidirectional propagation from one of the first and second ports to the other. A related method comprises arranging the magnetic source at a prescribed position where the real eigenvalue matches the frequency of an input signal applied at a selected port.

公开(公告)号：US11946878B2

公开(公告)日：2024-04-02

申请号：US17117701

申请日：2020-12-10

Applicant: UNIVERSITY OF MANITOBA

Inventor： Can-Ming Hu ,  Yi-Pu Wang ,  Yongsheng Gui ,  Mun Kim

IPC: H01Q7/06 ,  G01N22/00 ,  H01F1/34 ,  H01P3/08 ,  H01Q1/36 ,  H01Q7/00 ,  H05K1/02 ,  H01P1/36 ,  H01P1/38

CPC classification number: G01N22/00 ,  H01F1/346 ,  H01P3/081 ,  H01Q7/00 ,  H05K1/0237 ,  H01P1/36 ,  H01P1/38

Abstract: A device for unidirectional propagation of microwaves comprises a resonant microwave structure arranged to transmit microwaves between two ports and a magnetic source arranged to provide a generally static magnetic field and to have a resonant frequency distinct from that of the microwave structure, which is disposed adjacent the microwave structure so as to be located in presence of electromagnetic fields emanating from the transmitted microwaves such that the magnetic field interacts with the electromagnetic fields of the microwaves so as to form a set of hybridized resonant frequencies at which zero intrinsic damping exists, one of the set of hybridized resonant frequencies being a real eigenvalue providing the unidirectional propagation from one of the first and second ports to the other. A related method comprises arranging the magnetic source at a prescribed position where the real eigenvalue matches the frequency of an input signal applied at a selected port.

公开(公告)号：US11442027B2

公开(公告)日：2022-09-13

申请号：US16548401

申请日：2019-08-22

Applicant: University of Manitoba

Inventor： Alex Reimer ,  Yongsheng Gui ,  Can-Ming Hu ,  Fuji Jian ,  Paul Fields ,  Digvir Jayas

IPC: G01N22/04 ,  A23L7/10 ,  G01K1/024

Abstract: Novel microwave devices capable of monitoring pest activity or moisture content in grain. A planar active microwave resonator with a regenerative element is placed in proximity to the grain to be tested, for example by immersion within in a bulk grain store to monitor moisture levels or pest activity therein, mounting within a sample container to monitor moisture levels or pest activity in a smaller volume of grain sampled from a grain store or shipment, or exposure to individual sample kernels for detecting internal pests therein.

公开(公告)号：US20200072766A1

公开(公告)日：2020-03-05

申请号：US16548401

申请日：2019-08-22

Applicant: University of Manitoba

Inventor： Alex Reimer ,  Yongsheng Gui ,  Can-Ming Hu ,  Fuji Jian ,  Paul Fields ,  Digvir Jayas

IPC: G01N22/04 ,  A23L7/10

Abstract: Novel microwave devices capable of monitoring pest activity or moisture content in grain. A planar active microwave resonator with a regenerative element is placed in proximity to the grain to be tested, for example by immersion within in a bulk grain store to monitor moisture levels or pest activity therein, mounting within a sample container to monitor moisture levels or pest activity in a smaller volume of grain sampled from a grain store or shipment, or exposure to individual sample kernels for detecting internal pests therein.

公开(公告)号：US20150221847A1

公开(公告)日：2015-08-06

申请号：US14420000

申请日：2013-01-18

Applicant: The University of Manitoba

Inventor： Can-Ming Hu ,  Yongsheng Gui ,  Zhaohui Zhang ,  Hong Guo

IPC: H01L35/32 ,  G01N22/02 ,  H01L43/10 ,  H01L35/22 ,  H01L35/04 ,  H01L43/02

CPC classification number: H01L35/32 ,  G01N22/00 ,  G01N22/02 ,  G01S7/35 ,  G01S13/89 ,  H01L35/04 ,  H01L35/22 ,  H01L43/02 ,  H01L43/08 ,  H01L43/10

Abstract: Embodiments of intrinsic magneto-thermoelectric transport in MTJs carrying a tunneling current/in the absence of external heat sources are presented. In one embodiment Ohm's law for describing MTJs may be revised even in the linear transport regime. This has a profound impact on the dynamic response of MTJs subject to an ac electric bias with frequency ω, as demonstrated by a novel Seebeck rectification effect measured for ω up to microwave (GHz) frequencies. This Seebeck rectification effect may be employed in magneto-thermoelectric devices.

Abstract translation: 提出了在没有外部热源的情况下承载隧道电流的MTJ中的固有磁电 - 热电传输的实施例。 在一个实施例中，即使在线性传输方案中，也可以修改用于描述MTJ的欧姆定律。 这对具有频率ω的交流电偏压的MTJ的动态响应具有深远的影响，如通过测量ω至微波（GHz）频率的新颖的塞贝克整流效应所证明的。 这种塞贝克整流效应可用于磁电热器件。