Active probes for creating H-field probes for flat frequency response

Surbhi Mittal*, Ji Zhang, David Pommerenke, James L. Drewniak, Kuifeng Hu, Xiaopeng Dong

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference paperpeer-review


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.

Original languageEnglish
Title of host publication2009 IEEE International Symposium on Electromagnetic Compatibility, EMC 2009
Number of pages6
Publication statusPublished - 1 Dec 2009
Externally publishedYes
Event2009 IEEE International Symposium on Electromagnetic Compatibility: EMC 2009 - Austin, United States
Duration: 17 Aug 200921 Aug 2009

Publication series

NameIEEE International Symposium on Electromagnetic Compatibility
ISSN (Print)1077-4076


Conference2009 IEEE International Symposium on Electromagnetic Compatibility
Country/TerritoryUnited States

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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