A resonant E-field probe for RFI measurements

Guanghua Li, Koichi Itou, Yoshihiro Katou, Noriyuki Mukai, David Pommerenke, Jun Fan

Research output: Contribution to journalArticlepeer-review


Near-field probes with high sensitivity facilitate the identification of the root causes of intrasystem radio frequency interference issues, where weak noise desensitizes the receiver. In the study presented in this paper, a high-sensitivity resonant electric field probe was designed, consisting of an LC resonator loaded by quarter-wave transformers for optimal power transfer at the resonant frequency. Based on the equivalent circuit model, analytical derivations and numerical simulations were performed to illustrate the design methodology. The simulation results agreed well with the measured values. At the resonant frequency of 1.577 GHz, the measured /S21/ from a matched trace to the resonant probe was approximately 6.6 dB higher than that of an equivalently sized broadband probe.

Original languageEnglish
Article number6913505
Pages (from-to)1719-1722
Number of pages4
JournalIEEE Transactions on Electromagnetic Compatibility
Issue number6
Publication statusPublished - 1 Dec 2014
Externally publishedYes


  • Electric field probe
  • enhanced sensitivity
  • impedance transformer
  • receiver desensitization
  • RF interference

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this