Attenuation effects of plasma on Ka-band wave propagation in various gas and pressure environments

Joo Hwan Lee, Joonsuk Kim, Yuna Kim, Sangin Kim, Doo Soo Kim, Yongshik Lee, Jong Gwan Yook

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


This work demonstrates attenuation effects of plasma on waves propagating in the 26.5-40 GHz range. The effect is investigated via experiments measuring the transmission between two Ka-band horn antennas set 30 cm apart. A dielectric-barrier-discharge (DBD) plasma generator with a size of 200 mm × 100 mm × 70 mm and consisting of 20 layers of electrodes is placed between the two antennas. The DBD generator is placed in a 400 mm × 300 mm × 400 mm acrylic chamber so that the experiments can be performed for plasma generated under various conditions of gas and pressure, for instance, in air, Ar, and He environments at 0.001, 0.05, and 1 atm of pressure. Attenuation is calculated by the difference in the transmission level, with and without plasma, which is generated with a bias voltage of 20 kV in the 0.1-1.4 kHz range. Results show that the attenuation varies from 0.05 dB/m to 9.0 dB/m depending on the environment. Noble gas environments show higher levels of attenuation than air, and He is lossier than Ar. In all gas environments, attenuation increases as pressure increases. Finally, electromagnetic models of plasmas generated in various conditions are provided.

Original languageEnglish
Pages (from-to)63-69
Number of pages7
JournalJournal of Electromagnetic Engineering and Science
Issue number1
Publication statusPublished - 2018 Jan 1

Bibliographical note

Funding Information:
This work has been supported by the Low Observable Technology Research Center program of the Defense Acquisition Program Administration and Agency for Defense Development.

Publisher Copyright:
© Copyright The Korean Institute of Electromagnetic Engineering and Science.

All Science Journal Classification (ASJC) codes

  • Radiation
  • Instrumentation
  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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