Title :
Pulse radiation from an insulated linear antenna: an analogue of Cherenkov radiation from a moving charge
Author :
Hertel, T.W. ; Smith, G.S.
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
We analyze an insulated, traveling-wave linear antenna using the finite-difference time-domain (FDTD) method. The rotationally symmetric computational volume is truncated with the new perfectly matched layer (PML) for cylindrical coordinates (Maloney et al. 1997). The radiated field (far-field) is calculated from the field on a cylindrical surface surrounding the antenna using a near-field to far-field transformation. The FDTD analysis involves no approximations and directly produces results in the time domain.
Keywords :
antenna radiation patterns; dielectric-loaded antennas; finite difference time-domain analysis; leaky wave antennas; linear antennas; Cherenkov radiation; FDTD method; cylindrical coordinates; cylindrical surface; finite-difference time-domain method; insulated linear antenna; insulated traveling-wave linear antenna; near-field to far-field transformation; perfectly matched layer; pulse radiation; radiated field; rotationally symmetric computational volume; time domain; Finite difference methods; Insulation; Perfectly matched layers; Time domain analysis;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1998. IEEE
Conference_Location :
Atlanta, GA, USA
Print_ISBN :
0-7803-4478-2
DOI :
10.1109/APS.1998.702110
