Title :
On the characteristic impedance of TEM horn antennas
Author :
Maloney, J.G. ; Smith, G.S.
Author_Institution :
Signature Technol. Lab., Georgia Tech. Res. Inst., Atlanta, GA, USA
Abstract :
We have built several TEM horn antennas, measured their performance and compared this to calculations made using the finite-difference time-domain (FDTD) method. All of the horns were of the image equivalent design shown, were driven from a coaxial line (APC-7) with the characteristic impedance Z/sub 0/=50/spl Omega/, and had the angle /spl beta//2=160/spl deg/. During the course of these investigations, we noticed that Carrel´s (1958) formula and graph did not agree with our measurements or FDTD calculations; this observation prompted the study which we present.
Keywords :
antenna testing; electric impedance; finite difference time-domain analysis; horn antennas; 50 ohm; FDTD; TEM horn antennas; characteristic impedance; coaxial line; finite-difference time-domain; image equivalent design; performance measurement; Antenna measurements; Coaxial components; Contracts; Force measurement; Horn antennas; Impedance; Laboratories; Laplace equations; Microstrip; Transmission line antennas;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1995. AP-S. Digest
Conference_Location :
Newport Beach, CA, USA
Print_ISBN :
0-7803-2719-5
DOI :
10.1109/APS.1995.529991
