Plasma antenna with frequency adjustment

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Abstract

A discharge of limited length (“plasma column”) in a gas-discharge tube filled with a rarefied gas was studied. The discharge is created due to the one-sided excitation of an extended high-frequency discharge supported by a propagating azimuthally symmetric mode of the surface wave. It is shown that a “plasma column” can be an effective plasma antenna at operating frequencies below the plasma frequency (ωp), with frequency tuning due to changes in the length of the “plasma column”.

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About the authors

I. M. Minaev

Prokhorov General Physics Institute Russian Academy of Sciences

Author for correspondence.
Email: minaev1945@mail.ru
Russian Federation, Moscow, 119991 Russia

O. V. Tikhonevich

Prokhorov General Physics Institute Russian Academy of Sciences

Email: minaev1945@mail.ru
Russian Federation, Moscow, 119991 Russia

Yu. E. Vekshin

16 Central Research Testing Institute of the Ministry of Defense of the Russian Federation named after Marshal A. I. Belov

Email: minaev1945@mail.ru
Russian Federation, Mytishchi Moscow oblast, 140006 Russia

References

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Supplementary files

Supplementary Files
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2. Fig. 1. Scheme of the experimental stand: 1 – transmitter, 2 – SWR meter, 3 – matching line, 4 – gas discharge lamp.

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3. Fig. 2. Dependence of the SWR (1, 2) and the length of the plasma column (3) on the transmitter power at a frequency of 140 MHz; 1 – fluorescent lamp, 2 – pin antenna.

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4. Fig. 3. Dependences of the active (1) and reactive (2) components of the resistance Zn of the plasma capacitor on wn /wr.

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5. Fig. 4. Dependences of the active component of the plasma column resistance on wn (wr = 9 × 108 rad/s) for the length of the plasma column lst: 0.5 Lt (dotted line), 0.75 Lt (dashed curve), 1.0 Lt (solid).The arrows mark the points corresponding to the plasma column resistance values obtained from SWR measurements.

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