The new application of multilevel method of moments in analysis of wire-antenna arrays

1998 ◽  
Vol 3 (1) ◽  
pp. 46-48
Author(s):  
Jin Qi ◽  
Quan Rongsheng ◽  
Xie Shuguo
Keyword(s):  
Method Of Moments ◽  
Antenna Arrays ◽  
Wire Antenna ◽  
Multilevel Method

scholarly journals Closed-Form Expressions for Numerical Evaluation of Self-Impedance Terms Involved on Wire Antenna Analysis by the Method of Moments

Electronics ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 1316
Author(s):  
Carlos-Ivan Paez-Rueda ◽  
Arturo Fajardo ◽  
Manuel Pérez ◽  
Gabriel Perilla
Keyword(s):  
Numerical Integration ◽  
Method Of Moments ◽  
Computing Time ◽  
Basis Functions ◽  
Wire Antenna ◽  
Complex Geometries ◽  
Point Matching ◽  
Piecewise Constant ◽  
Matching Procedure ◽  
Time Required

This paper proposes new closed expressions of self-impedance using the Method of Moments with the Point Matching Procedure and piecewise constant and linear basis functions in different configurations, which allow saving computing time for the solution of wire antennas with complex geometries. The new expressions have complexity O(1) with well-defined theoretical bound errors. They were compared with an adaptive numerical integration. We obtain an accuracy between 7 and 16 digits depending on the chosen basis function and segmentation used. Besides, the computing time involved in the calculation of the self-impedance terms was evaluated and compared with the time required by the adaptative quadrature integration solution of the same problem. Expressions have a run-time bounded between 50 and 200 times faster than an adaptive numerical integration assuming full computation of all constant of the expressions.

scholarly journals Analysis of an Underground Vertical Electrically Small Wire Antenna

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Shuwei Dong ◽  
Aiguo Yao ◽  
Fanhe Meng
Keyword(s):  
Electric Field ◽  
Green's Function ◽  
Method Of Moments ◽  
Current Distribution ◽  
Radial Distance ◽  
Wire Antenna ◽  
Sommerfeld Integral ◽  
Antenna Surface ◽  
Electromagnetic Signals ◽  
Easy Solution

The problem considered is a vertical electrically small wire antenna located underground, which transmits electromagnetic signals to the ground. Getting Green’s function of the vertical dipole underground was the first step to calculate this issue. A quasistatic situation was considered to make an approximation on Sommerfeld integral for easy solution. The method of moments was used to solve the current distribution on the antenna surface at different frequencies, which laid a good foundation for obtaining the electric field of the antenna. Then the axial and radial components of the electric field with the radial distance on the ground were investigated, as well as the voltage received on the ground. Furthermore, the influence of the frequency and stratum parameters on current and electric field was studied to understand the variation clearly.

A Novel Analysis of Planar Dipole Antenna Arrays in Free Space with the Multiple-Sweep Method of Moments

2011 ◽  
Vol 31 (4) ◽  
pp. 258-272 ◽  
Author(s):  
Supakit Kawdungta ◽  
Chuwong Phongcharoenpanich ◽  
Danai Torrungrueng
Keyword(s):  
Method Of Moments ◽  
Antenna Arrays ◽  
Free Space ◽  
Dipole Antenna ◽  
Sweep Method
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