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Electronics
Volume 11
Issue 20
10.3390/electronics11203369
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Communication

An Improved Combination Method of MoM and UTD for Calculating the Radiation Characteristics of Antenna Arrays Mounted around Electrically Large Platform

by
Nan Wang
*,
Junzhi Liu
,
Qi Zhang
and
Yu Zhang
Shaanxi Key Laboratory of Large Scale Electromagnetic Computing, School of Electronic Engineering, Xidian University, Xi’an 710071, China
*
Author to whom correspondence should be addressed.
Electronics 2022, 11(20), 3369; https://doi.org/10.3390/electronics11203369
Submission received: 5 September 2022 / Revised: 11 October 2022 / Accepted: 12 October 2022 / Published: 19 October 2022
(This article belongs to the Special Issue Application of Computational Electromagnetics Techniques and Artificial Intelligence in the Engineering)
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Abstract

An improved method, namely, combined UTD with MoM, is studied to calculate the disturbed pattern of array antennas mounted around an electrically large platform. Each array unit is fed in turns in an MoM processor and then substituted into the UTD process to pursue the calculation of the disturbed pattern. When solving the current coefficient in MoM, the linear superposition principle is used to realize the separate feeding of each array unit. The proposed method can avoid unreliable UTD results when an equivalent phase center of the antenna is sheltered, and it can improve the RMS error from more than 15 dB to about 1 dB in the T-shaped example given. No large amount of computing resources are needed for the proposed method; the accuracy, efficiency and necessity are illustrated by examples given.
Keywords: array antenna; disturbed pattern; electrically large platforms; MoM; UTD array antenna; disturbed pattern; electrically large platforms; MoM; UTD

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MDPI and ACS Style

Wang, N.; Liu, J.; Zhang, Q.; Zhang, Y. An Improved Combination Method of MoM and UTD for Calculating the Radiation Characteristics of Antenna Arrays Mounted around Electrically Large Platform. Electronics 2022, 11, 3369. https://doi.org/10.3390/electronics11203369

AMA Style

Wang N, Liu J, Zhang Q, Zhang Y. An Improved Combination Method of MoM and UTD for Calculating the Radiation Characteristics of Antenna Arrays Mounted around Electrically Large Platform. Electronics. 2022; 11(20):3369. https://doi.org/10.3390/electronics11203369

Chicago/Turabian Style

Wang, Nan, Junzhi Liu, Qi Zhang, and Yu Zhang. 2022. "An Improved Combination Method of MoM and UTD for Calculating the Radiation Characteristics of Antenna Arrays Mounted around Electrically Large Platform" Electronics 11, no. 20: 3369. https://doi.org/10.3390/electronics11203369

APA Style

Wang, N., Liu, J., Zhang, Q., & Zhang, Y. (2022). An Improved Combination Method of MoM and UTD for Calculating the Radiation Characteristics of Antenna Arrays Mounted around Electrically Large Platform. Electronics, 11(20), 3369. https://doi.org/10.3390/electronics11203369

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