Current distribution and input impedance of a circular loop antenna located on the surface of a gyromagnetic cylinder

2018 ◽  
Author(s):  
Alexander V. Kudrin ◽  
Anna S. Zaitseva ◽  
Tatyana M. Zaboronkova ◽  
Catherine Krafft
Keyword(s):  
Current Distribution ◽  
Input Impedance ◽  
Loop Antenna ◽  
Circular Loop

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.

Model of input impedance of a circular-loop antenna

2016 ◽  
Vol 65 (2) ◽  
pp. 331-337
Author(s):  
Yan Yang ◽  
Yida Zeng ◽  
Qixing Chen
Keyword(s):  
Input Impedance ◽  
Loop Antenna ◽  
Circular Loop

scholarly journals CURRENT DISTRIBUTION AND INPUT IMPEDANCE OF A STRIP LOOP ANTENNA LOCATED ON THE SURFACE OF A CIRCULAR COLUMN FILLED WITH A RESONANT MAGNETOPLASMA

2013 ◽  
Vol 55 ◽  
pp. 241-256 ◽  
Author(s):  
Alexander V. Kudrin ◽  
Anna S. Zaitseva ◽  
Tatyana M. Zaboronkova ◽  
Sergej S. Zilitinkevich
Keyword(s):  
Current Distribution ◽  
Input Impedance ◽  
Loop Antenna ◽  
Circular Column

Radiation and Impedance Characteristics of a Circular Loop Antenna Driven by Fractional Order Electronics

2013 ◽  
Author(s):  
Calvin Coopmans ◽  
Hadi Malek ◽  
Edmund Spencer
Keyword(s):  
Fractional Order ◽  
Input Impedance ◽  
Degrees Of Freedom ◽  
Impedance Matching ◽  
Loop Antenna ◽  
Antenna Gain ◽  
Circular Loop ◽  
Capacitive Element ◽  
Impedance Characteristics ◽  
Order Components

Fractional calculus techniques (non-integer order systems) have been successfully applied in many fields of electronics and engineering. In this paper the effects of including fractional order electronic components on the radiated antenna pattern of a circular loop antenna is presented. A fractional order “RLC” impedance matching circuit is placed between the generator and the equivalent circuit of a loop antenna. The input impedance of the antenna and the antenna gain are controllable through varying the fractional orders of an inductive element and a capacitive element (Fractors) in the matching network. The circuit is presented and solved analytically, and some numerical simulations follow. We discuss the effects of fractional order components on the resulting radiation patterns. In particular, the amplitude of the antenna gain is controlled by the fractional order parameters. This effect could be exploited in future for antenna beam-forming applications when using an array of antenna elements. Further, the input impedance of the antenna circuit can also be controlled by the fractional order components. The introduction of fractional order variables provides for higher degrees of freedom, enabling a flexible approach to tuning antennas for optimal performance.

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