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A theory of a receiving antenna in a moving isotropic plasma

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Radiophysics and Quantum Electronics Aims and scope

We analyze the response of a dipole antenna to the noise-like and/or regular (quasimonochromatic) plasma oscillations and waves. The antenna is immersed in an isotropic plasma moving with velocity greater than the electron thermal velocity. In the case of a noise field, we calculate the squared spectral power density of the noise voltage at the input of a receiving antenna for frequencies close to the electron plasma frequency. It is shown that the main contribution to the noise is made by the radiation due to the excitation of waves at anomalous Doppler frequencies. In the case of an incident monochromatic wave, the mean square voltage at the antenna input is calculated as a function of the wave frequency and angle of arrival. It is shown that the effective antenna length can differ strongly from the geometrical length of the dipole. This fact results from the dispersion of longitudinal waves ensuring that many plane waves (a continuum, in the limiting case) contribute to the re-radiated field for a given direction of propagation of the radiation energy.

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Authors and Affiliations

  1. Institute of Applied Physics of the Russian Academy of Sciences, Nizhny Novgorod, Russia

    Yu. V. Chugunov

  2. Institute of Atmospheric Physics, Prague, Czech Republic

    V. Fiala

Authors
  1. Yu. V. Chugunov
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  2. V. Fiala
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Corresponding author

Correspondence to Yu. V. Chugunov.

Additional information

Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 52, No. 12, pp. 960–971, December 2009.

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Chugunov, Y.V., Fiala, V. A theory of a receiving antenna in a moving isotropic plasma. Radiophys Quantum El 52, 867–877 (2009). https://doi.org/10.1007/s11141-010-9194-z

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  • DOI: https://doi.org/10.1007/s11141-010-9194-z

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