Coupling between transmission line antennas: analytic solution, FDTD, and measurements

Author

Geogakopoulos, S.V. ; Balanis, Constantine A. ; Birtcher, Craig R.

Author_Institution

Dept. of Electr. Eng., Arizona State Univ., Tempe, AZ, USA

Volume

47

Issue

6

fYear

1999

fDate

6/1/1999 12:00:00 AM

Firstpage

978

Lastpage

985

Abstract

Transmission line antennas are widely used elements. Analytical formulations for the coupling between transmission line antennas, e.g., loops and inverted-Ls, are developed. Furthermore, corrected current distributions that exhibit nonzero input current at the antiresonances of such elements are derived. The analytical results are compared with finite-difference time-domain (FDTD) calculations and measurements. Also, the physics of coupling is discussed. Finally, an FDTD technique that efficiently computes the two-port network parameters of a system of two antennas is developed based on a source with an internal resistance

Keywords

antenna arrays; antenna theory; current distribution; electromagnetic coupling; finite difference time-domain analysis; loop antennas; two-port networks; wire antennas; FDTD; analytic solution; antiresonances; current distributions; finite-difference time-domain calculations; inverted-Ls; loops; nonzero input current; transmission line antennas; two-port network parameters; Antenna measurements; Computer networks; Couplings; Current distribution; Electrical resistance measurement; Finite difference methods; Physics; Time domain analysis; Transmission line antennas; Transmission line measurements;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.777120

Filename

777120