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.

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

IPC: H04B1/10 ,  G01R19/04

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.

公开(公告)号：US12119854B2

公开(公告)日：2024-10-15

申请号：US18112604

申请日：2023-02-22

Applicant: Purdue Research Foundation

Inventor： Mohammad Abu Khater ,  Dimitrios Peroulis

IPC: H04B1/10 ,  G01R19/04

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.

公开(公告)号：US20200076516A1

公开(公告)日：2020-03-05

申请号：US16173275

申请日：2018-10-29

Applicant: Purdue Research Foundation

Inventor： Mohammad Abu Khater ,  Dimitrios Peroulis

IPC: H04B17/21 ,  H01P1/219 ,  G01R23/10 ,  H03K19/21 ,  H03H7/01 ,  G01R1/24 ,  G01R23/02

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.

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

IPC: H04B17/21 ,  G01R23/02 ,  G01R1/24 ,  H03K19/21 ,  H03H7/01

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.