The influence of the screen on the characteristics of omnidirectional radiators and rarefied arrays
DOI:
https://doi.org/10.1109/ICATT.2013.6650750Keywords:
electromagnetic radiation, Hertz dipole, half-wave vibrator, radiation pattern, antenna directivity, screenAbstract
Hertz dipole radiation pattern and the in-phase half-wave dipole arrays of these radiators have been calculated for the case where the half-wave vibrator is over an in-finite perfectly conducting screen at a height h, and the distance between the transmitters at random lattices and the amplitude distribution of the currents on the grill evenly. The calculations were performed in the whole space of observation. The algorithms and computer programs to calculate CPV investigated radiator s and arrays. It is shown that there is a distance between the radiator s in the sparse grid at which the maximum maximorum CPV (as in the case of gratings in free space). It is shown that when h = 0,25λ the optimal distance between the transmitters than 1.15 wavelength (grating in free space dopt ≈ 0,9 λ).References
GOROBETS, NIKOLAY N.; BULGAKOVA, A.A. Directional characteristics of rarefied antennas array with screen. Proc. of VI Int. Conf. on Antenna Theory and Techniques, ICATT, 17-21 Sept. 2007, Sevastopol, Ukraine. IEEE, 2007, p.464-467, doi: http://dx.doi.org/10.1109/ICATT.2007.4425246.
GOROBETS, N.N.; BULGAKOVA, A.A. Influence of the screen on the range properties of rarefied arrays of near-omnidirectional radiators. Proc. of 5th Int. Conf. on Ultrawideband and Ultrashort Impulse Signals, UWBUSIS, 6-10 Sept. 2010, Sevastopol, Ukraine. IEEE, 2010, p.223-225, doi: http://dx.doi.org/10.1109/UWBUSIS.2010.5609134.
GOROBETS, N.N.; BULGAKOVA, A.A. Direction and range characteristics of rarefied antenna arrays with screens. Proc. of 6th Int. Conf. on Ultrawideband and Ultrashort Impulse Signals, UWBUSIS, 17-21 Sept. 2012, Sevastopol, Ukraine. IEEE, 2012, p.192-194, doi: http://dx.doi.org/10.1109/UWBUSIS.2012.6379776.
GOROBETS, N.N.; BULGAKOVA, A.A. Directional characteristics of sparse arrays with a binomial amplitude distribution. Radio Engineering, 2010, n.163, p.167-174.
