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公开(公告)号：US20200320275A1
公开(公告)日：2020-10-08
申请号：US16843754
申请日：2020-04-08
Applicant: Purdue Research Foundation
Abstract: A method of focused wireless power transmission is disclosed which includes generating a map for electromagnetic fingerprints at N locations within an environment of interest, including a transmitter and plurality of receivers each located at one of the N locations, transmitting pre-matched signals based on the electromagnetic fingerprints in a predetermined order for a first location of the N location, measuring response at each of the N locations, measuring spatial correlations between all other locations and the first location, and evaluating electromagnetic power focus at each of the N locations by comparing the measured spatial correlations.
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公开(公告)号：US20180198185A1
公开(公告)日：2018-07-12
申请号：US15917992
申请日：2018-03-12
Applicant: Purdue Research Foundation
Inventor： Juan Zeng , Zhengan Yang , Dimitrios Peroulis
CPC classification number: H01P7/06 , H01H59/00 , H01P1/205 , H01P1/2053 , H01P1/208 , H01P7/065 , H03H2003/027 , H03J3/02
Abstract: A cavity resonator tuning diaphragm comprising a plurality of inner corrugations, the plurality of inner corrugations having a first depth. An outer corrugation located between the plurality of inner corrugations and a perimeter of the diaphragm is also included, the outer corrugation having a second depth greater than the first depth. The addition of the outer deep corrugation provides increased thermal stability and reduced required actuation voltage.
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公开(公告)号：US09927531B2
公开(公告)日：2018-03-27
申请号：US14870298
申请日：2015-09-30
Applicant: LANDAUER, INC. , PURDUE RESEARCH FOUNDATION
Inventor： Mark Raymond Salasky , Sean M. Scott , P. Alexander Walerow , Daniel John Valentino , Dimitrios Peroulis
IPC: H01L31/119 , G01T1/02 , H01L31/18 , G01T7/00 , H01L27/144
CPC classification number: G01T1/026 , G01T7/00 , G01T7/005 , H01L27/1443 , H01L31/119 , H01L31/1804
Abstract: A method and apparatus is disclosed for differentially altering the radiation response across multiple MOSCAP sensors by placing different thin gate materials with different atomic numbers on a series of MOS-based radiation sensors. The secondary electrons created in high-atomic weight materials (such as gold) at lower incident photon energy levels enable a tissue equivalent radiation response and radiations source identification/differentiation. This is a desirable alternative to using filters with different coefficients across a series of MOSCAP radiation sensor which will attenuate the signal and degrade the device form factor. The method and apparatus disclosed achieves the same functionality but with inherent gain instead of attenuation, thus increasing sensitivity. This will improve the minimum resolvable dose for x-rays and low-energy gammas (high-energy gammas will remain the same), and produces a response that can distinguish the energy level of incident radiation photon.
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公开(公告)号：US09528885B2
公开(公告)日：2016-12-27
申请号：US14194479
申请日：2014-02-28
Applicant: Purdue Research Foundation
Inventor： Lokesh Anilkumar Gupta , Dimitrios Peroulis , Lionel A. Young
CPC classification number: G01K7/38 , F16J15/3492 , G01K7/36 , G01K13/08 , G01N25/72 , G01R33/038 , G01R33/07
Abstract: A system for measuring a physical characteristic of mechanical face seal includes a permanent magnet and a magnetic sensor. The permanent magnet is affixed to a structure proximate to a bearing surface of the mechanical face seal. The permanent magnet has a magnetic field that decreases as a function of temperature. The magnetic sensor is mounted on the mechanical face seal in a magnetic field sensing relationship with the permanent magnet. The magnetic sensor is configured to generate a voltage signal corresponding to a sensed magnetic field.
Abstract translation: 用于测量机械面密封件的物理特性的系统包括永磁体和磁传感器。 永磁体被固定到靠近机械表面密封件的支承表面的结构上。 永磁体具有作为温度的函数而减小的磁场。 磁传感器与永磁体的磁场感应关系安装在机械表面密封件上。 磁传感器被配置为产生对应于检测到的磁场的电压信号。
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25.发明授权公开(公告)号：US09325052B2
公开(公告)日：2016-04-26
申请号：US13907436
申请日：2013-05-31
Applicant: Purdue Research Foundation
Inventor： Dimitrios Peroulis , Akash Anand , Joshua Azariah Small , Xiaoguang Liu , Muhammad Shoaib Arif , Mihal Sinani
Abstract: A tunable cavity resonator includes a housing, a post, and a controllably variable capacitive coupling. The housing defines an interior and has at least one side wall, a first end, and a second end. The post is located within the interior and extends from the first end to the second end. The post and the housing define a resonating cavity. The controllably variable capacitive coupling is disposed in the housing.
Abstract translation: 可调谐腔谐振器包括外壳，支柱和可控制的电容耦合。 壳体限定内部并且具有至少一个侧壁，第一端和第二端。 该柱位于内部并且从第一端延伸到第二端。 柱和壳体定义谐振腔。 可控制的可变电容耦合设置在壳体中。
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Patent Agency Ranking
公开(公告)号：US09166271B2
公开(公告)日：2015-10-20
申请号：US13908201
申请日：2013-06-03
Applicant: Purdue Research Foundation
Inventor： Dimitrios Peroulis , Adam Fruehling , Joshua Azariah Small , Xiaoguang Liu , Wasim Irshad , Muhammad Shoaib Arif
CPC classification number: H01P7/065
Abstract: A tunable cavity resonator includes a substrate, a cap structure, and a tuning assembly. The cap structure extends from the substrate, and at least one of the substrate and the cap structure defines a resonator cavity. The tuning assembly is positioned at least partially within the resonator cavity. The tuning assembly includes a plurality of fixed-fixed MEMS beams configured for controllable movement relative to the substrate between an activated position and a deactivated position in order to tune a resonant frequency of the tunable cavity resonator.
Abstract translation: 可调谐腔谐振器包括基板，盖结构和调谐组件。 盖结构从衬底延伸，并且衬底和帽结构中的至少一个限定谐振器腔。 调谐组件至少部分地位于谐振器腔内。 调谐组件包括多个固定的固定的MEMS光束，其被配置为在激活的位置和去激活位置之间相对于衬底的可控制移动，以调谐可调谐腔谐振器的谐振频率。
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27.发明公开公开(公告)号：US20240145612A1
公开(公告)日：2024-05-02
申请号：US18506083
申请日：2023-11-09
Inventor： Thomas R. Jones , Dimitrios Peroulis , Alden N. Fisher , Douglas W. Barlage
CPC classification number: H01L31/09 , H01L31/02002 , H01L31/1804 , H01P11/002 , H01L31/035281
Abstract: A waveguide assembly integrated with a semiconductor wafer is provided. The waveguide assembly includes a waveguide channel defined by internal walls of the wafer lined with a metallic layer, and having at least one port for transmission of the RF signal into or out of the waveguide channel. The waveguide assembly also includes a semiconductor obstacle member disposed in the waveguide channel. The waveguide assembly may be fabricated using etching and deposition processes for semiconductor devices. In use, selectively varying either one or both of frequency or power level of electromagnetic radiation applied to the obstacle member varies electrical conductance of the obstacle member, and thereby varies the electrical impedance of the obstacle member to transmission of the RF signal through the waveguide channel. The waveguide assembly may be used for switching, attenuating, routing, filtering, and transforming the RF signal.
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公开(公告)号：US11454443B2
公开(公告)日：2022-09-27
申请号：US16587151
申请日：2019-09-30
Applicant: Purdue Research Foundation
Abstract: A method of uniform RF-heating within a chamber is disclosed, which includes cyclically varying electromagnetic properties of a chamber according to a plurality of configuration, transmitting an alternating RF signal about a first frequency range between a first frequency and a second frequency from a transmitter into the chamber, measuring electromagnetic power at a random receiver location in the chamber for each of the plurality of configurations and at a predetermined resolution of frequency thereby generating a statistical distribution vs. frequency, applying a statistical test to the generated statistical distribution based on a predetermined statistical function, determining a standard deviation of the average received power as a function of frequency, choosing a third frequency range associated with a standard deviation lower than a second threshold, and choosing an operational frequency in the third frequency range which provides maximum heating depending on the material being heated.
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公开(公告)号：US11289946B2
公开(公告)日：2022-03-29
申请号：US16843749
申请日：2020-04-08
Applicant: Purdue Research Foundation
Abstract: A method of uniform wireless power distribution within a chamber is disclosed which includes measuring dimensional characteristics of a chamber, having a transmitter and a plurality of power harvesters, creating a statistical electromagnetic environment, evaluating statistical properties of the statistical electromagnetic environment, setting a new criterion for acceptable statistical properties of the statistical electromagnetic environment, measuring a lowest usable frequency of the chamber below which the statistical properties of the statistical electromagnetic environment are not acceptable according to a predetermined criterion, determining an efficiency profile of the plurality of power harvesters versus frequency at frequencies higher than the lowest usable frequency, selecting an operating frequency that maximizes efficiencies of the plurality of power harvesters, measuring a collective efficiency of the chamber, and returning to setting a new criterion if the measured collective efficiency is below a predetermined efficiency threshold.
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公开(公告)号：US20210041169A1
公开(公告)日：2021-02-11
申请号：US16587151
申请日：2019-09-30
Applicant: Purdue Research Foundation
Abstract: A method of uniform RF-heating within a chamber is disclosed, which includes cyclically varying electromagnetic properties of a chamber according to a plurality of configuration, transmitting an alternating RF signal about a first frequency range between a first frequency and a second frequency from a transmitter into the chamber, measuring electromagnetic power at a random receiver location in the chamber for each of the plurality of configurations and at a predetermined resolution of frequency thereby generating a statistical distribution vs. frequency, applying a statistical test to the generated statistical distribution based on a predetermined statistical function, determining a standard deviation of the average received power as a function of frequency, choosing a third frequency range associated with a standard deviation lower than a second threshold, and choosing an operational frequency in the third frequency range which provides maximum heating depending on the material being heated.
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