Analysis and design of conical spiral antennas using the FDTD method

Author

Hertel, T.W. ; Smith, G.S.

Author_Institution

Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA

Volume

3

fYear

2000

fDate

16-21 July 2000

Firstpage

1540

Abstract

Conical spiral antennas were first developed by Dyson (1959, 1965) using empirical results. No analytical/numerical analysis has been performed to date for the full model with expanding arm width. The only numerical analysis has been by the method of moments (MoM) for the thin-wire conical spiral antenna which is not truly frequency independent. The objective of this paper is to analyze this antenna using the finite-difference time-domain (FDTD) method. A parametric study is used to improve upon the available design base. Various design parameters of the conical spiral antenna are provided as a function of the antenna geometry to supplement Dyson´s experimental results.

Keywords

UHF antennas; antenna radiation patterns; conical antennas; finite difference time-domain analysis; spiral antennas; 0.2 to 2 GHz; FDTD method; UHF; antenna geometry; conical spiral antennas; design parameters; finite-difference time-domain; numerical analysis; parametric study; Antenna theory; Arm; Bandwidth; Finite difference methods; Frequency; Geometry; Numerical analysis; Spirals; Time domain analysis; Upper bound;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2000. IEEE

Conference_Location

Salt Lake City, UT, USA

Print_ISBN

0-7803-6369-8

Type

conf

DOI

10.1109/APS.2000.874512

Filename

874512