TELECOMMUNICATIONS AND RADIO ENGINEERING - 2010 Vol. 69,
No 18
 

 

 

 

NEAR-FIELD EFFECTS OF RESONANT WIRE ANTENNAS

N.N. Gorobets & R.I. Tsekhmistro
V. Karazin National University of Kharkov,
4, Svoboda Sq., Kharkiv, 61077, Ukraine
Address all correspondence to N.N. Gorobets E-mail: Nikolay.N.Gorobets@univer.khakrov.ua

Abstract
The amplitude and phase characteristics of electromagnetic radiation of symmetrical thin wire resonant antennas in the near field and intermediate regions have been analyzed. Computer-aided analysis allowed us to establish that the length of the reactive near field depends on the dipole length and has its minimal value in resonance. The radiation pattern of a half-wave dipole is formed at the distances exceeding one-and-a-half wavelength.
KEY WORDS:electromagnetic field, Hertz dipole, dipole antennas, near field, phase difference

References

  1. Yerokhin, G.A., Kocherzhevskiy, V.G., and Petrovskiy, A.A., (1999), Near field analysis in wire antennas, Antenny, 1(42):31-35 (in Russian).
  2. Buzov, A.L., Kazanskiy, L.S., Minkin, M.A., and Yudin, V.V., (2000), Generalized equivalent circuit in computation of the energy flow density in the proximity of a symmetric dipole, Fizika volnovykh protsessov and radiotekhnichesk. sistemy. 3(2):51-53 (in Russian).
  3. Shubarin, Yu.V., (1960), Microwave frequency antennas, Izd-vo KhGU, Kharkov: 284 p. (in Russian).
  4. Mittra, R., (1977), Computational Methods for Electromagnetics, Mir, Moscow: 487 p. (in Russian).
  5. Gorobets, N.N., (1991), Specific features of wave processes in the near filed of electric and magnetic field sensors, Vinnitsa: 95-100 p. (in Russian).
  6. Gorobets, N.N. and Tsekhmistro, R.I.., (2000), Electromagnetic field characteristics of short wire antennas in the near field, Visnyk KhNU. Radiofizika ta Elektronika. 467(1):62-66 (in Russian).


pages 1615-1622

Back