Electrodynamic control of wave emission in the whistler frequency range by a loop antenna in magnetized plasma

2006 ◽  
Vol 32 (8) ◽  
pp. 653-655 ◽  
Author(s):  
M. E. Gushchin ◽  
T. M. Zaboronkova ◽  
S. V. Korobkov ◽  
A. V. Kostrov ◽  
A. V. Strikovsky
Keyword(s):  
Magnetized Plasma ◽  
Loop Antenna ◽  
Frequency Range ◽  
Wave Emission

scholarly journals A Compact Four-Port Coplanar Antenna Based on an Excitation Switching Reconfigurable Mechanism for Cognitive Radio Applications

2019 ◽  
Vol 9 (15) ◽  
pp. 3157 ◽  
Author(s):  
O ◽  
Jin ◽  
Choi
Keyword(s):  
Cognitive Radio ◽  
High Frequency ◽  
Coplanar Waveguide ◽  
Low Frequency ◽  
Loop Antenna ◽  
Ultra Wideband ◽  
Frequency Range ◽  
Uwb Antenna ◽  
High Isolation ◽  
Loop Antennas

In this paper, we propose a compact four-port coplanar antenna for cognitive radio applications. The proposed antenna consists of a coplanar waveguide (CPW)-fed ultra-wideband (UWB) antenna and three inner rectangular loop antennas. The dimensions of the proposed antenna are 42 mm × 50 mm × 0.8 mm. The UWB antenna is used for spectrum sensing and fully covers the UWB spectrum of 3.1–10.6 GHz. The three loop antennas cover the UWB frequency band partially for communication purposes. The first loop antenna for the low frequency range operates from 2.96 GHz to 5.38 GHz. The second loop antenna is in charge of the mid band from 5.31 GHz to 8.62 GHz. The third antenna operates from 8.48 GHz to 11.02 GHz, which is the high-frequency range. A high isolation level (greater than 17.3 dB) is realized among the UWB antenna and three loop antennas without applying any additional decoupling structures. The realized gains of the UWB antenna and three loop antennas are greater than 2.7 dBi and 1.38 dBi, respectively.

Near field of a loop antenna operating in plasma in the whistler frequency range

2007 ◽  
Vol 33 (2) ◽  
pp. 102-108 ◽  
Author(s):  
S. V. Korobkov ◽  
M. E. Gushchin ◽  
A. V. Kostrov ◽  
A. V. Strikovskiĭ ◽  
C. Krafft
Keyword(s):  
Near Field ◽  
Loop Antenna ◽  
Frequency Range

scholarly journals Design and Implementation a Non-uniform Helical Antenna in Frequency Range of 450–850 MHz for Ultra-high-frequency Television Application

2019 ◽  
Vol 3 (2) ◽  
pp. 75-79
Author(s):  
Firas Muhammad Zeki ◽  
Adil Hussein Mohammed Al-Dalawie
Keyword(s):  
High Gain ◽  
Loop Antenna ◽  
Local Market ◽  
Antenna Gain ◽  
Frequency Range ◽  
Helical Antenna ◽  
Matlab Program ◽  
The People ◽  
Received Power ◽  
Tv Broadcasting

In a domestic region, the people are living inside cities, they complaining from the weak of local TV broadcasting signals in frequency range of 450–850 MHz, in this paper try to get a solution by increase the gain antenna by design new antenna have a wideband and high gain compare with antennas are available in the local market. A non-uniform helical antenna designed using helical antenna calculator according to equations then implemented and measured the radiation pattern and gain of antenna, then compare with commercial loop antenna gain found increase in received power about 10–12 dB more than loop antenna gain. The results of measurement applied in Matlab program to draw the pattern of the antenna.

Numerical study of self-interaction of Bernstein waves by nonlinear Landau damping

1992 ◽  
Vol 48 (3) ◽  
pp. 465-476
Author(s):  
Masao Sugawa
Keyword(s):  
Numerical Study ◽  
Magnetized Plasma ◽  
Wave Frequency ◽  
Landau Damping ◽  
Frequency Range ◽  
Electron Heating ◽  
Dominant Mechanism ◽  
Bernstein Waves ◽  
Nonlinear Landau Damping ◽  
Bulk Plasma

When Bernstein waves (B waves) are excited in a magnetized plasma, their self-interaction by nonlinear Landau damping (NLD) becomes the dominant mechanism for the electron heating of the bulk plasma. We examine this behaviour numerically. This occurs only for B waves with relatively small k∥ because the damping of the B waves becomes very small. This occurs in the relatively broad B-wave frequency range betweenω/ωc = 1.45 and 1.78. For B waves with large k∥ (k∥R > 0.15), virtual waves are not generated via self-interaction due to NLD because the quasi-linear cyclotron damping of the B waves becomes the dominant mechanism. The numerical results agree well with experimental ones.

THEORY OF A STRIP LOOP ANTENNA LOCATED ON THE SURFACE OF AN AXIALLY MAGNETIZED PLASMA COLUMN

2013 ◽  
Vol 51 ◽  
pp. 221-246 ◽  
Author(s):  
Alexander V. Kudrin ◽  
Anna S. Zaitseva ◽  
Tatyana M. Zaboronkova ◽  
Catherine Krafft ◽  
George A. Kyriacou
Keyword(s):  
Plasma Column ◽  
Magnetized Plasma ◽  
Loop Antenna

Numerical Analysis of a Tunable Magnetized Plasma Loop Antenna

2018 ◽  
Vol E101.B (4) ◽  
pp. 1055-1060
Author(s):  
Mohammadreza GHADERI ◽  
Gholamreza MORADI
Keyword(s):  
Numerical Analysis ◽  
Magnetized Plasma ◽  
Loop Antenna ◽  
Plasma Loop
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