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

Volume

2

fYear

1998

fDate

21-26 June 1998

Firstpage

964

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1998. IEEE

Conference_Location

Atlanta, GA, USA

Print_ISBN

0-7803-4478-2

Type

conf

DOI

10.1109/APS.1998.702110

Filename

702110