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Active Probes for Creating H-Field Probes for Flat Frequency Response

  • Missouri University of Science and Technology

Research output: Contribution to journalArticlepeer-review

Abstract

This paper presents an approach to obtain a flat frequency response from the first order derivative behavior of an electrically small loop and electrically short electric field probe by using them in combination with active oscilloscope probes. An H-field probe made in flex circuit technology was designed to operate up to about 5 GHz. These probes have loop dimensions as small as 3 × 3 mil and trace widths in the order of 1.75 mils. The H-field probe terminals are connected to the differential amplifier of the active oscilloscope probe which functions as an integrator to achieve a flat frequency response. The integrator behavior compensates for the first order derivative response of the flex circuit probes. The E-field probe utilizes the high input impedance of the browser attached to the active probe for achieving a flat frequency response.

Keywords

  • Active Probe
  • Active Probes
  • Cathode Ray Oscilloscopes
  • Circuit Testing
  • Connectors
  • Coupling Circuits
  • Derivative
  • Differential Amplifiers
  • E-Dot Sensor
  • E-Field
  • Electric Fields
  • Electric Impedance
  • Electrically Short Electric Field Probe
  • Electromagnetic Compatibility
  • First Order Derivative Behavior
  • First Order Derivatives
  • Flat Frequency Response
  • Flex Circuit Technology
  • Flex Circuits
  • Flexible Electronics
  • Frequency Conversion
  • Frequency Response
  • H-Dot Sensor
  • H-Field Probes
  • High Input Impedance
  • Integrated Circuits
  • Integrator
  • Oscillographs
  • Oscilloscopes
  • Plastic Molds
  • Probes
  • Radio Frequency
  • Ultrasonic Devices

Disciplines

  • Electrical and Computer Engineering

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