Title :
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
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;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2000. IEEE
Conference_Location :
Salt Lake City, UT, USA
Print_ISBN :
0-7803-6369-8
DOI :
10.1109/APS.2000.874512
