Energy-Tunneling Dielectric Sensor Based on Substrate Integrated Waveguides

Rashad Ramzan, Muhammad Omar, Omar F. Siddiqui

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


In this paper, we propose a dielectric sensing device based on a wire-loaded substrate-integrated-waveguide (SIW) structure that supports energy-tunneling phenomenon. The extremely intense electromagnetic fields that are created around the resonant wire can be exploited to design highly sensitive dielectric sensor. We show that by constructing two SIWs connected through a thin metallic wire, fine changes in dielectric constant of solid as well as liquid samples placed at high-energy points can be detected by observing the resonant frequency shifts. When the metallic wire is loaded with extremely small sized (1.9 mm3) solid and liquid samples, the respective resonance shifts of 0.2 and 1 GHz are measured. Based on the proposed SIW tunneling structure, a new class of highly sensitive, low cost, and rugged sensors can be designed that are suitable for biomedical and forensic applications.

Original languageEnglish
Article number7786916
Pages (from-to)1264-1268
Number of pages5
JournalIEEE Sensors Journal
Issue number5
Publication statusPublished - Mar 1 2017


  • Dielectric sensors
  • Energy tunneling
  • Energy-tunneling sensors
  • High intensity electromagnetic fields

ASJC Scopus subject areas

  • Instrumentation
  • Electrical and Electronic Engineering


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