Low-THz transmission through water-containing contaminants on antenna radome

Fatemeh Norouzian*, Rui Du, Edward G. Hoare, Peter Gardner, Costas Constantinou, Mikhail Cherniakov, Marina Gashinova

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)
305 Downloads (Pure)


In this paper, signal reduction due to the presence of water content formed on a radome has been studied at low-THz frequencies. The effect of obscurants on signal reduction has been characterized by measuring the ratio of reflected signals from a reference target through the radome, with contaminant and without contaminant. All the measurements have been compared to theoretical models, demonstrating a reasonable agreement. Water is the most common obscurant in outdoor applications and the main cause of performance deterioration in rainy, snowy, and foggy weather. This paper concentrates on the attenuation caused by different forms of distribution of water as a radome contaminant. Both a thin uniform layer of water and randomly distributed water droplets are studied at 150 and 300 GHz. The results show strong signal reduction due to the presence of uniform thickness of water and higher signal reduction with increasing frequency. However, the measured transmissivity through distributed water droplets, which occur in practice due to the surface tension of water, shows lower transmission loss at the shorter wavelength, due to transmission through the distribution of gaps between droplets.

Original languageEnglish
Pages (from-to)63-75
Number of pages13
JournalIEEE Transactions on Terahertz Science and Technology
Issue number1
Early online date22 Dec 2017
Publication statusPublished - Jan 2018


  • Diffraction
  • loss measurement
  • refractive index
  • submillimeter-wave propagation

ASJC Scopus subject areas

  • Radiation
  • Electrical and Electronic Engineering


Dive into the research topics of 'Low-THz transmission through water-containing contaminants on antenna radome'. Together they form a unique fingerprint.

Cite this