Wave processes in near zone of Hertz dipole with plane screen
DOI:
https://doi.org/10.1109/ICATT.2013.6650850Keywords:
Hertz dipole, metal screen, electromagnetic fields, phase velocityAbstract
The physical peculiarities of the wave processes in the whole space in a near-field zone of Hertz dipole placed over ideally conducting plane screen are analyzed. The amplitudes, phases and phase velocities of electric and magnetic fields (EMF) components in the direction of a normal to the screen versus the distance from a dipole to observation point R′ are calculated. It is shown, that the velocity of decreasing the EMF amplitudes are smaller than in case of a dipole in a free space. Modulus of the transverse EMF components ratio equals the wave impedance in a free space beginning with R′ ≈ λ. The ratio argument equals zero and the phase velocities of EMF components coincide with the ones in case of a dipole in a free space beginning with R′ = 0.52λ. The boundary of far-field zone depends also from the observation angles.References
GOROBETS, N.N. Peculiarities of wave processes in near zone of sensors of electromagnetic fields. Proc. of III Ukr. Conf. on The Methods and Measuring Means of Solving the Problems of Electromagnetic Compatibility, Vinnitza, 1991, p.100-105.
YELISEYEVA, N.P.; GOROBETS, N.N. Diffraction of Radiation of the Wire Antenna on the Rectangular and Corner Screens. Kharkiv: Kharkiv National University, 2009, 380 p. [in Russian].
Published
2014-02-19
Issue
Section
Round table
