Model of a Miniature Plasma Antenna
Zhivko Kiss’ovski1, Vasil Vachkov1

1Zhivko Kiss’ovski, Department Radio Physics and Electronics, Sofia University, Sofia, Bulgaria.
2Vasil Vachkov, Department Radio Physics and Electronics, Sofia University, Sofia, Bulgaria.

Manuscript received on 15 August 2015 | Revised Manuscript received on 25 August 2015 | Manuscript Published on 30 August 2015 | PP: 330-332 | Volume-4 Issue-6, August 2015 | Retrieval Number: F4256084615/15©BEIESP
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Abstract: In this work we report results from theoretical modeling of miniature plasma antenna at low gas pressure working at a frequency of 2.45 GHz. The plasma antenna is investigated for the first time as a cylindrical dielectric resonator antenna (DRA) with known electric and magnetic fields on the wall surfaces. The plasma column in a finite length vessel is sustained by azimuthally symmetric surface wave (TM00-mode) and this plasma antenna works as an asymmetrical electrical dipole above the metal plane. The dispersion relation of the surface waves in the plasma column is solved numerically and their wavelength, damping rate and field distribution are obtained. Antenna radiated power depends on the value of the axial component of the electric field on the boundary plasma-air. Results show that the antenna radiation from cylindrical plasma column at low gas pressure is similar to a dielectric resonator antenna.
Keywords: Antenna, Dielectric Resonator, Plasma, Surface Waves

Scope of the Article: Microwave Antenna