Radiation of electromagnetic field pulses by planar dipole antennas at different modes of excitation
DOI:
https://doi.org/10.1109/ICATT.2007.4425132Keywords:
pulse generation, pulsed antenna, ultra-wide-band antenna, UWBAbstract
The results of experimental investigations of time-amplitude dependences of impulse electromagnetic fields in near and far zone of radiators are presented in the given work. There have been considered the dependence of amplitude and pulse waveforms on radiator configuration and modes of antenna excitation: with energy storage directly in the antenna and with energy storage in capacitors of an external generator. The comparison of time-amplitude dependences of the radiated field for the "bow-tie" radiator and a modified "diamond dipole" with different angular dimensions has shown that the "diamond dipole" with angular dimension of 180deg has a maximal pulse amplitude and minimal duration of afterpulse oscillations of the radiated field. It has been shown that for all radiator types been considered, the antenna excitation by a generator with energy storage directly in the radiator permits to increase the amplitude of the radiated pulse field by 5-15 %.References
SHLAGER, KURT L.; SMITH, GLENN S.; MALONEY, JAMES G. Optimization of Bow-Tie Antennas for Pulse Radiation. IEEE Trans. Antennas Propag., Jul. 1994, v.42, n.7, p.975-982, doi: http://dx.doi.org/10.1109/8.299600.
LESTARI, A.A.; SUKSMONO, A.B.; BHARATA, E.; YAROVOY, A.G.; LIGTHART, L.P. Small UWB antenna with improved efficiency for pulse radiation Antenna Technology: Small Antennas and Novel Metamaterials. Proc. of IEEE Int. Workshop IWAT 2005, 7-9 Mar. 2005. IEEE, 2005, p.295-289.
CERNY, P.; MAZANEK, M. Optimized Ultra Wideband Dipole Antenna Applied Electromagnetics and Communications. Proc. of 18th Int. Conf. ICECom 2005, 12-14 Oct. 2005. IEEE, 2005. p.1-4.
LULE, E.; BABIJ, T.; SIWIAK, K. Analysis using FDTD of ultra-wideband dipole antennas. Proc. of IEEE Antennas and Propagation Society Int. Symp., 22-27 June 2003, Columbus, OH, USA. IEEE, 2003, v.1, p.838-841, doi: http://dx.doi.org/10.1109/APS.2003.1217591.
ORLENKO, A.A.; KHOLOD, P.V. Two Modes of Excitation of the UWB/SP Transmitting Antenna. Proc. of Third Int. Conf. on Ultrawideband and Ultrashort Impulse Signals, 18-22 Sept. 2006, Sevastopol, Ukraine. IEEE, 2006, p.185-187, doi: http://dx.doi.org/10.1109/UWBUS.2006.307197.
