Current distribution and input admittance of an infinite cylindrical antenna in anisotropic plasma

1967 ◽  
Vol 15 (2) ◽  
pp. 244-252 ◽  
Author(s):  
S. Lee ◽  
Y. Lo
Keyword(s):  
Current Distribution ◽  
Anisotropic Plasma ◽  
Input Admittance ◽  
Cylindrical Antenna

The Field in a Narrow Circumferential Slot in a Coaxial Waveguide

1973 ◽  
Vol 51 (9) ◽  
pp. 946-955 ◽  
Author(s):  
R. A. Hurd
Keyword(s):  
Electric Field ◽  
Outer Wall ◽  
Coaxial Waveguide ◽  
Input Admittance ◽  
Quantity Of Interest ◽  
Cylindrical Antenna

The first three terms in the expansion of the electric field in a narrow circumferential gap in the outer wall of a coaxial waveguide have been determined. Also found is the input admittance of an infinite, coaxially fed cylindrical antenna, a quantity of interest in the theory of sleeve antennas.

A Series Solution for the Input Admittance of a Circular Loop Antenna over a Lossy Earth

2019 ◽  
Vol 12 (2) ◽  
pp. 113-117
Author(s):  
Osman M. Alsemaid ◽  
Sameir M. Ali Hamed ◽  
Saif A. Mahmood
Keyword(s):  
Current Distribution ◽  
Series Solution ◽  
Numerical Solutions ◽  
Loop Antenna ◽  
Fourier Series Expansion ◽  
Image Method ◽  
Input Admittance ◽  
Circular Loop ◽  
Numerical Integrations ◽  
Good Agreement

Background: This study deals with the derivation of expressions for the current distribution and the input admittance of a circular loop antenna (CLA) over a lossy Earth in a series form. Methods: The analysis is based on the image method, Fourier series expansion and the direct integration of the vector potential. Result: The results for the current distribution of the study are in very good agreement with those corresponding results available in the literature, which checks the correctness of the formulations of the study. Conclusion: The provided solution in this paper is simple, straightforward and can be applied without performing any numerical integrations, which makes it preferred compared to the numerical solutions that are available in the literature.

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