Full-wave analysis of HF antennas on helicopters using the FDTD, FEM & NEC

Stavros V. Georgakopoulos; Anastasis C. Polycarpou; Constantine Balanis

doi:10.1109/APS.1999.789494

Full-wave analysis of HF antennas on helicopters using the FDTD, FEM & NEC

Stavros V. Georgakopoulos, Anastasis C. Polycarpou, Constantine Balanis

Electrical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

To first analyze and eventually try to achieve an optimum design of an HF antenna on a helicopter in free space is a difficult task. The reason is twofold: first, there are many parameters that could be possibly varied; second, accurate numerical methods which can handle large computational problems must be implemented. In this paper, three different numerical methods are presented to predict the input impedance and radiation patterns of scaled HF antennas mounted on a scaled helicopter model. These include the finite-difference time-domain (FDTD) method, the finite element method (FEM) and the method of moment (MoM), specifically the NEC4 code. Predictions are sometimes compared with each other and/or with measurements. In addition to a large computational size, another major challenge for all these methods is the highly resonant nature of these antennas, loops or inverted-L's, which makes the overall problem ill-conditioned. The advantages and disadvantages of each method, in relation to the analysis of HF antennas in the presence of geometrically complex structures, are emphasized.

Original language	English (US)
Title of host publication	IEEE Antennas and Propagation Society International Symposium
Subtitle of host publication	Wireless Technologies and Information Networks, APS 1999 - Held in conjunction with USNC/URSI National Radio Science Meeting
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1058-1061
Number of pages	4
Volume	2
ISBN (Electronic)	078035639X, 9780780356399
DOIs	https://doi.org/10.1109/APS.1999.789494
State	Published - Jan 1 1999
Event	1999 IEEE Antennas and Propagation Society International Symposium, APSURSI 1999 - Orlando, United States Duration: Jul 11 1999 → Jul 16 1999

Other

Other	1999 IEEE Antennas and Propagation Society International Symposium, APSURSI 1999
Country/Territory	United States
City	Orlando
Period	7/11/99 → 7/16/99

ASJC Scopus subject areas

Computer Networks and Communications
Electronic, Optical and Magnetic Materials
Instrumentation
Radiation

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10.1109/APS.1999.789494

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Georgakopoulos, S. V., Polycarpou, A. C., & Balanis, C. (1999). Full-wave analysis of HF antennas on helicopters using the FDTD, FEM & NEC. In IEEE Antennas and Propagation Society International Symposium: Wireless Technologies and Information Networks, APS 1999 - Held in conjunction with USNC/URSI National Radio Science Meeting (Vol. 2, pp. 1058-1061). Article 789494 Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APS.1999.789494

Full-wave analysis of HF antennas on helicopters using the FDTD, FEM & NEC. / Georgakopoulos, Stavros V.; Polycarpou, Anastasis C.; Balanis, Constantine.
IEEE Antennas and Propagation Society International Symposium: Wireless Technologies and Information Networks, APS 1999 - Held in conjunction with USNC/URSI National Radio Science Meeting. Vol. 2 Institute of Electrical and Electronics Engineers Inc., 1999. p. 1058-1061 789494.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Georgakopoulos, SV, Polycarpou, AC & Balanis, C 1999, Full-wave analysis of HF antennas on helicopters using the FDTD, FEM & NEC. in IEEE Antennas and Propagation Society International Symposium: Wireless Technologies and Information Networks, APS 1999 - Held in conjunction with USNC/URSI National Radio Science Meeting. vol. 2, 789494, Institute of Electrical and Electronics Engineers Inc., pp. 1058-1061, 1999 IEEE Antennas and Propagation Society International Symposium, APSURSI 1999, Orlando, United States, 7/11/99. https://doi.org/10.1109/APS.1999.789494

Georgakopoulos SV, Polycarpou AC, Balanis C. Full-wave analysis of HF antennas on helicopters using the FDTD, FEM & NEC. In IEEE Antennas and Propagation Society International Symposium: Wireless Technologies and Information Networks, APS 1999 - Held in conjunction with USNC/URSI National Radio Science Meeting. Vol. 2. Institute of Electrical and Electronics Engineers Inc. 1999. p. 1058-1061. 789494 doi: 10.1109/APS.1999.789494

Georgakopoulos, Stavros V. ; Polycarpou, Anastasis C. ; Balanis, Constantine. / Full-wave analysis of HF antennas on helicopters using the FDTD, FEM & NEC. IEEE Antennas and Propagation Society International Symposium: Wireless Technologies and Information Networks, APS 1999 - Held in conjunction with USNC/URSI National Radio Science Meeting. Vol. 2 Institute of Electrical and Electronics Engineers Inc., 1999. pp. 1058-1061

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Full-wave analysis of HF antennas on helicopters using the FDTD, FEM & NEC

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