Geometrical Scale Modeling of Gain and Echo Area: Simulations, Measurements and Comparisons

Authors

  • Constantine A. Balanis School of Electrical, Computer and Energy Engineering Arizona State University, Tempe, AZ 85287, USA
  • Life Fellow School of Electrical, Computer and Energy Engineering Arizona State University, Tempe, AZ 85287, USA
  • IEEE School of Electrical, Computer and Energy Engineering Arizona State University, Tempe, AZ 85287, USA
  • Kaiyue Zhang School of Electrical, Computer and Energy Engineering Arizona State University, Tempe, AZ 85287, USA
  • Craig R. Birtcher School of Electrical, Computer and Energy Engineering Arizona State University, Tempe, AZ 85287, USA

Keywords:

Antenna, gain, measurement, radar cross section, scale model

Abstract

Geometrical scale modeling is often necessary to perform measurements of parameters and figures-of-merit of antennas and radar targets with large physical dimensions that cannot be accommodated in indoor and controlled experimental facilities. The measured and simulated parameters and figures-of-merit of the scaledmodels can then be translated to represent, if transformed properly, those of the full-scale models. In this paper, the basic theory is summarized which relates the gain and the echo area (RCS) of scaled models to those of their full-scale counterparts. Simulations and measurements are performed on scaled models, for both gain and RCS, and compared with those of full-scale models to verify the geometrical scaling. For the gain, a quarter-wavelength monopole on a scaled helicopter airframe, and for the RCS, a flat plate of complex configuration, are considered for simulations, measurements and comparisons. A very good agreement has been obtained for both gain and RCS between both sets of data.

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References

G. Sinclair, “Theory of models of electromagnetic systems,” Proc. IRE, vol. 36, no. 11, pp. 1364- 1370, Nov. 1948.

C. A. Balanis, Antenna Theory: Analysis and Design, 3rd edition, Wiley, 2005.

CST Computer Simulation Technology, https:// www.cst.com

C. A. Balanis, Advanced Engineering Electromagnetics, 2nd edition, Wiley, 2012.

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Published

2021-07-27

How to Cite

[1]
Constantine A. Balanis, Life Fellow, IEEE, Kaiyue Zhang, and Craig R. Birtcher, “Geometrical Scale Modeling of Gain and Echo Area: Simulations, Measurements and Comparisons”, ACES Journal, vol. 33, no. 01, pp. 95–98, Jul. 2021.

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Section

General Submission