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公开(公告)号：US20170201335A1
公开(公告)日：2017-07-13
申请号：US15057072
申请日：2016-02-29
Applicant: Purdue Research Foundation
Inventor： Mohammad Abu Khater , Dimitrios Peroulis
CPC classification number: H04B17/21 , G01R1/24 , G01R23/02 , H01P1/2136 , H01P1/219 , H03H7/1775 , H03H2007/013 , H03K19/21
Abstract: Methods and devices suitable for monitoring the frequency of microwave tunable filters in real time. The frequency readout relies on the natural response of such a filter when excited by a pulse. Methods of measuring an operating frequency of a pole in a tunable filter include measuring a number of cycles in a natural response in the filter when the filter is excited by an electric current pulse, and determining a resonance frequency based on the number of cycles measured in the natural response. Such a method can provide the operating frequency information in a binary digital format, making it relatively easy to read and process. A measuring resonator may be mounted to the filter resonator and connected by a common actuator.
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公开(公告)号：US20160265984A1
公开(公告)日：2016-09-15
申请号：US15069926
申请日：2016-03-14
Applicant: Purdue Research Foundation
Inventor： Dimitrios Peroulis , Nithin Raghunathan , Michael Todd Hall
CPC classification number: G01K13/006 , G01K1/024 , G01K7/34 , G08C17/02 , H04W4/70 , H04W52/0229 , Y02D70/144
Abstract: A sensor is provided that is capable of sensing a level of a parameter in an environment surrounding the sensor, wirelessly transmitting data regarding the level of the parameter to another device, and converting a wireless signal to a current and powering the sensors with the current. The sensor may measure capacitance data and transmit the data to a computer to be converted into temperature readings. The sensor may provide temperature readings from multiple locations within a container into which the sensor is placed.
Abstract translation: 提供了一种传感器，其能够感测传感器周围的环境中的参数水平，将关于参数的等级的数据无线传输到另一设备，并且将无线信号转换为电流并且利用电流为传感器供电。 传感器可以测量电容数据并将数据传输到计算机以转换为温度读数。 传感器可以从传感器放置到的容器内的多个位置提供温度读数。
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公开(公告)号：US09354125B2
公开(公告)日：2016-05-31
申请号：US13936192
申请日：2013-07-07
Applicant: Purdue Research Foundation
Inventor： Dimitrios Peroulis , Lokesh Anilkumar Gupta , Andrew S. Kovacs , Amir Shahidi
CPC classification number: G01K7/34 , G01H11/00 , G01K1/024 , G01K13/08 , G01M13/045 , G01P15/097 , G01P15/11
Abstract: A sensor arrangement for wirelessly measuring temperature and vibration is disclosed. The sensor arrangement includes a sensor element and a sensor coil affixed on the device. A readout coil is configured to be magnetically coupled to the sensor coil configured to energize the sensor coil with an energizing signal, configured to provide the natural frequency of the sensor element, the sensor coil, and the readout coil, and configured to provide amplitude modulations of the energizing signal, the amplitude modulations being induced by changes in the coupling factor of the readout coil and the sensor coil. An energizing circuit is configured to energize the readout coil with the energizing signal. A readout circuit is configured to store or display information regarding the natural frequency and the amplitude modulations.
Abstract translation: 公开了一种用于无线测量温度和振动的传感器装置。 传感器装置包括固定在装置上的传感器元件和传感器线圈。 读出线圈被配置为磁耦合到传感器线圈，所述传感器线圈被配置成用激励信号激励传感器线圈，该激励信号被配置为提供传感器元件，传感器线圈和读出线圈的固有频率，并且被配置为提供幅度调制 的激励信号，由读出线圈和传感器线圈的耦合因子的变化引起振幅调制。 激励电路被配置为用激励信号使读出线圈通电。 读出电路被配置为存储或显示关于固有频率和幅度调制的信息。
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公开(公告)号：US11437859B2
公开(公告)日：2022-09-06
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：US20200321802A1
公开(公告)日：2020-10-08
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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Patent Agency Ranking
公开(公告)号：US20200182709A1
公开(公告)日：2020-06-11
申请号：US16518970
申请日：2019-07-22
Applicant: Purdue Research Foundation
Inventor： Dimitrios Peroulis , Nithin Raghunathan , Michael Todd Hall
Abstract: A sensor is provided that is capable of sensing a level of a parameter in an environment surrounding the sensor, wirelessly transmitting data regarding the level of the parameter to another device, and converting a wireless signal to a current and powering the sensors with the current. The sensor may measure capacitance data and transmit the data to a computer to be converted into temperature readings. The sensor may provide temperature readings from multiple locations within a container into which the sensor is placed.
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公开(公告)号：US10122478B2
公开(公告)日：2018-11-06
申请号：US15057072
申请日：2016-02-29
Applicant: Purdue Research Foundation
Inventor： Mohammad Abu Khater , Dimitrios Peroulis
IPC: H04B17/21 , H04B3/04 , G01R1/24 , G01R23/02 , H03H7/01 , H03K19/21 , H03K3/282 , H01P1/20 , H01P1/207 , H01P1/208
Abstract: Methods and devices suitable for monitoring the frequency of microwave tunable filters in real time. The frequency readout relies on the natural response of such a filter when excited by a pulse. Methods of measuring an operating frequency of a pole in a tunable filter include measuring a number of cycles in a natural response in the filter when the filter is excited by an electric current pulse, and determining a resonance frequency based on the number of cycles measured in the natural response. Such a method can provide the operating frequency information in a binary digital format, making it relatively easy to read and process. A measuring resonator may be mounted to the filter resonator and connected by a common actuator.
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公开(公告)号：US10122327B2
公开(公告)日：2018-11-06
申请号：US14786890
申请日：2014-04-24
Applicant: PURDUE RESEARCH FOUNDATION
Inventor： Kenle Chen , Dimitrios Peroulis
Abstract: A tunable amplifier includes continuous tunability for both frequency and power levels. The tunable amplifier includes a combination of a tunable series resonator and a multi-stage LC network as the output matching network. The tunable amplifier incorporates a variable diode varactor with high breakdown voltage and high tuning range into a tunable resonator. The tunable resonator is connected to a fixed output matching network to enable a wide range of operating frequencies. The tunable amplifier enables high power, high efficiency, broadband and load-modulated power amplification, which is greatly desired for next-generation wireless communication systems and other high-frequency applications.
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公开(公告)号：US20240266708A1
公开(公告)日：2024-08-08
申请号：US18429314
申请日：2024-01-31
Applicant: Purdue Research Foundation
Inventor： Dimitrios Peroulis , Michael Dimitri Sinanis
CPC classification number: H01P7/06 , H01P11/008
Abstract: A tunable radio frequency (RF) resonator may include an RF cavity core defining an RF cavity. The RF cavity core may include a post positioned within the RF cavity. The tunable RF resonator may further include a flexible membrane covering the RF cavity. A gap may be defined between the flexible membrane and the post. An actuator may cause movement of the flexible membrane and vary the distance between the membrane and the post. The RF cavity core is may be injection molded plastic with a metalized electroplating.
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公开(公告)号：US20230268945A1
公开(公告)日：2023-08-24
申请号：US18112604
申请日：2023-02-22
Applicant: Purdue Research Foundation
Inventor： Dimitrios Peroulis , Mohammad Abu Khater
CPC classification number: H04B1/1027 , G01R19/04
Abstract: Systems and methods for wideband RF interference detection and suppression include an open-circuit stub, a first voltage peak detector, a second voltage peak detector, an analog-to-digital converter (ADC), and a controller. The open-circuit stub is configured to receive an input signal. The first voltage peak detector is coupled at the open end of the open-circuit stub and configured to output a first voltage signal based on a portion of the input signal. The second voltage peak detector is coupled a distance away from the open end of the open-circuit stub and configured to output a second voltage signal based on the portion of the input signal. The controller is configured to generate an output control signal operable to adjust a signal filter based on the first digital voltage signal and the second digital voltage signal to suppress the portion of the input signal.
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