Simple non-invasive measurement of complex permittivity

RB Johnson, NM Pothecary, PM Robinson, AW Preece, CJ Railton

Research output: Contribution to journalArticle (Academic Journal)peer-review

4 Citations (Scopus)


A simple non-invasive sensor measures complex permittivity at microwave (UHF) frequencies from changes in resonance frequency and reflection coefficient. Response to reference liquids is in good agreement with finite difference time-domain calculation. The sensor is intended for detection and characterisation of breast tumours but has wider applications
Translated title of the contributionSimple non-invasive measurement of complex permittivity
Original languageEnglish
Pages (from-to)1360 - 1361
Number of pages2
JournalElectronics Letters
Issue number15
Publication statusPublished - 22 Jul 1993

Bibliographical note

Publisher: Institution of Electrical and Electronics Engineers (IEE)


  • breast tumours
  • microwave measurement
  • biomedical measurement
  • resonant current sheet sensor
  • noninvasive sensor


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