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| Wideband RF Radiation from a Nonlinear Transmission Line with a Pre-magnetized Ferromagnetic Core |
| Journal of Magnetics, Volume 21, Number 3, 30 Sep 2016, Pages 450-459 |
J.-W. Ahn (Hanwha Corp.), S. Y. Karelin (National Science Center ‘Kharkov Institute of Physics and Technology’), V. B. Krasovitsky (National Science Center ‘Kharkov Institute of Physics and Technology’), H.-O. Kwon *  (Hanwha Corp.), I. I. Magda (National Science Center ‘Kharkov Institute of Physics and Technology’), V. S. Mukhin (National Science Center ‘Kharkov Institute of Physics and Technology’), O. G. Melezhik (National Science Center ‘Kharkov Institute of Physics and Technology’), V. G. Sinitsin (National Science Center ‘Kharkov Institute of Physics and Technology’) |
| Abstract |
Experimental results and data of numerical simulations are presented, concerning generation of wideband
radio frequency (RF) oscillations in a nonlinear transmission line (NLTL) which contains a pre-magnetized core of ferrite material. Emphasis is made on the means for extracting the RF signal from the line, in order to radiate it into free space. Antennas of two types that can be used for the purpose are considered, both featuring a coaxial design. This permits availing of the principal advantages of coaxial systems, such as operation in the mode of a traveling TEM wave; wide range of the transmitted frequencies, and a reasonably simple design. The antennas studied, specifically a disc-cone dipole (DCD) and an impulse reflector antenna (‘Half-IRA’, or HIRA type) differ significantly in effective width of the radiated spectrum and in spatial characteristics of the radiated field in far region.
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| Keywords: quasi-harmonic wideband signal; pulsed current-excited NLTL; disc-cone dipole; HIRA |
| DOI: http://dx.doi.org/10.4283/JMAG.2016.21.3.450 |
| Full Text: PDF |
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