Radio frequency U-shape slot antenna design with NiTi shape memory alloys

Adnan Kaya, Irfan Kaya, Haluk E. Karaca

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


In this article, a novel instruments, scientific, measurements (ISM) band antenna which includes NiTi shape memory alloy is proposed and its return loss, impedance bandwidth, and gain performance are analyzed. A NiTi-based U-shape antenna operating at 2.4 GHz having 12.3% bandwidth has been utilized as a reference antenna. The 10-dB return loss bandwidth of the proposed antenna is found to be 12.3%, which covers the recently proposed communication applications. In addition, it has been shown that NiTi antenna improves the radiation pattern. The gain of the NiTi antenna is higher than 6 dBi. An accurate electromagnetic model of the NiTi antenna is developed. The computed and measured results showed good agreement for copper, aluminum, and NiTi antennas. The NiTi-based antenna shows stable gain and radiation patterns over the frequency range of 2-3 GHz.

Original languageEnglish
Pages (from-to)2976-2984
Number of pages9
JournalMicrowave and Optical Technology Letters
Issue number12
StatePublished - Dec 2013


  • NiTi
  • bandwidth improvement
  • shape memory alloy
  • slot antenna

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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