Electromagnetic near-field of circumferential slot cut in coaxial line shield


  • Valentina A. Lyashchenko Karazin Kharkiv National University, Ukraine
  • N. V. Medvedev Karazin Kharkiv National University, Ukraine https://orcid.org/0000-0003-1310-9710
  • A. V. Olefir Karazin Kharkiv National University, Ukraine




coaxial line, Green’s function, circumferential slot, near-field, field components


The problem of determining the electromagnetic fields, created by slotted coaxial line, is solved in the present work. To determine the coaxial-slot antenna near-fields the Kirchhoffs method has been applied. Electromagnetic field distributions in the near-zone of coaxial-slot radiator have been explored for different values of feeder parameters on a large range of wavelengths. Field diffraction patterns for the short distances from the slot radiators have been obtained.


Y. F. Han, K. N. Yung, Z. M. Xie, and R. S. Chen, “Analysis and design of a coaxial slot antenna for mobile telecommunications”, IEEE Ant. Propag. Soc. Int. Symp., vol. 4, pp. 2424-2426, 1999. DOI: http://doi.org/10.1109/APS.1999.789299.

K. Inomata, Y. Yamaguchi, H. Yamada, W. Tsujita, M. Shikai, and K. Sumi, “Accuracy of 2-dimensional object location estimation using leaky coaxial cables,” IEEE Trans. Ant. Propag., vol. 59, no. 6, pp. 2396-2403, 2011. DOI: http://doi.org/10.1109/TAP.2011.2143661.

D. H. Kim, and H. J. Eom, “Radiation of leaky coaxial cable with narrow transverse slots,” IEEE Trans. Ant. Propag., vol. 55, no. 1, pp. 107-110, 2007. DOI: http://doi.org/10.1109/TAP.2006.888414.

A. Yelizarenko, “Introduction of dual-band networks of technological radio communication in railway tunnels,” Information and Management Systems of Railway Transport, no. 4, pp. 42-47, 2014.

M. Rubio, A. Hernandez, L. Salas, E. Navarro, and E. Avila-Navarro, “Coaxial slot antenna design for microwave hyperthermia using finite-difference time domain and element method,” Open Nanomed. J., vol. 3, pp. 2-9, 2011. DOI: http://doi.org/10.2174/1875933501103010002.

L. Hamada, K. Saito, H. Yoshimura, and K. Ito, “Dielectric-loaded coaxial-slot antenna for interstitial microwave hyperthermia: longitudinal control of heating patterns,” Int. J. Hypertherm., vol. 16, no. 3, pp. 219-229, 2000. DOI: http://doi.org/10.1080/026567300285240.

Y. N. Feld, and L. S. Benenson, Antenna-Feeder Devices [in Russian], Vol. 2. Moscow: Zhukovsky Academy, 1959.

V. A. Katrich, V. A. Lyashchenko, and N. V. Medvedev, “Coaxial-slot radiator,” Radiotekhnika (Kharkiv), no. 163, pp. 183-190, 2010.

V. A. Katrich, V. A. Lyashchenko, and N. V. Medvedev, “Radiation from a slot array in a coaxial line screen,” Radio Phys. Radio Astron., vol. 3, no. 4, pp. 325-335, 2012. DOI: http://doi.org/10.1615/RadioPhysicsRadioAstronomy.v3.i4.60.

V. A. Katrich, V. A. Lyashchenko, and N. V. Medvedev, “Multielement slot radiator systems in a screen of semi-infinite coaxial line,” Radio Phys. Radio Astron., vol. 18, no. 4, pp. 309-322, 2013.

A. A. Pistolkors, “Radiation from transverse slots in circular cylinder surface,” Techn. Phys. J., vol. XVII, no. 3, pp. 377-387, 1947.





General antenna theory, propagation, numerical and analytical methods