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Open Access

Investigation on frequency-reconfigurable antenna of NiTi shape memory alloy based on SLM

Lanxi SHIa, Song DONGa, Hengchao LIANb, Jiawen XUb, Kan ZHENGa( )
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
State Key Laboratory of Advanced Equipment and Technology for Metal Forming, Shandong University, Ji’nan 250061, China
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Abstract

Aiming at the demand of variable configuration and reconfigurable antenna technology for space equipment such as satellites, a frequency reconfigurable antenna manufacturing method based on laser Selective Melting (SLM) NiTi shape memory alloy is proposed. Firstly, the SLM process is studied by experiments, and the electromagnetic properties of NiTi alloy with defects are analyzed. The shape memory effect and the functional characteristics of superelasticity are revealed. On this basis, a frequency reconfigurable satellite antenna based on NiTi shape memory alloy is developed. S11 measurement and microwave darkroom gain test show that the antenna is tunable in the 7.7-12.6 GHz band, with a maximum gain of 6.2 dBi and a reflection loss of less than −10 dB.

Keywords

laser powder bed meltingNiTi shape memory alloyshape memory effectfrequency reconfigurablesatellite antenna

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Journal of Advanced Manufacturing Science and Technology
Volume 6 Issue 1,
January 2026
Article number: 2026001
DOI: 10.51393/j.jamst.2026001

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Cite this article:
SHI L, DONG S, LIAN H, et al. Investigation on frequency-reconfigurable antenna of NiTi shape memory alloy based on SLM. Journal of Advanced Manufacturing Science and Technology, 2026, 6(1): 2026001. https://doi.org/10.51393/j.jamst.2026001

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Received: 15 April 2025
Revised: 09 June 2025
Accepted: 15 July 2025
Published: 30 September 2025
© 2026 JAMST

This is an Open Access article distributed under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.