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<p>A novel design for a reconfigurable antenna is proposed for 5G communication systems. The antenna operates in two bands 28 and 38&#xa0;GHz. Two parallel slots have been created in the upper surface of the SIW antenna cavity. The configurability of the antenna is achieved through a rotary strip where the orientation of the strip specify the operating frequency either 28–38&#xa0;GHz. The controlling strip can be rotated while touching the upper external wall surface of the SIW cavity by means of a micro-electro-mechanical system (MEMS) servomotor. At the orientation where the rotary strip is rotated to be normal to the feed line and parallel to the slots, it operates at 28&#xa0;GHz. And, at the orientation where the rotary strip is rotated to be parallel to the feed line and normal to the slots, it operates at 38&#xa0;GHz. When the rotary strip is normal to the two radiating slots, it divides each slot into two equal slots. The radiation efficiency is improved by the dual-slot configuration at the two operating frequencies 28 and 38&#xa0;GHz. The bandwidth at 28&#xa0;GHz-band is 1.1&#xa0;GHz and at 38&#xa0;GHz-band 0.9&#xa0;GHz. The peak value of the gain at the 28&#xa0;GHz-band is 5.4 dBi with radiation efficiency of 80.5% and at the 38&#xa0;GHz-band 6 dBi with radiation efficiency of 82%. To verify the achieved numerical results by simulations, a prototype of the antenna is fabricated and subjected to practical measurements showing good consent with the simulation results.</p>

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28/38 GHz MEMS-Controlled Reconfigurable SIW Antenna

  • 期刊论文

  • 发表日期：

    2026年5月6日

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  • Samar M. Azab,
  • Abdelhamid A. Shaalan,
  • Khalid F. A. Hussein,
  • Asmaa E. Farahat

摘要

A novel design for a reconfigurable antenna is proposed for 5G communication systems. The antenna operates in two bands 28 and 38 GHz. Two parallel slots have been created in the upper surface of the SIW antenna cavity. The configurability of the antenna is achieved through a rotary strip where the orientation of the strip specify the operating frequency either 28–38 GHz. The controlling strip can be rotated while touching the upper external wall surface of the SIW cavity by means of a micro-electro-mechanical system (MEMS) servomotor. At the orientation where the rotary strip is rotated to be normal to the feed line and parallel to the slots, it operates at 28 GHz. And, at the orientation where the rotary strip is rotated to be parallel to the feed line and normal to the slots, it operates at 38 GHz. When the rotary strip is normal to the two radiating slots, it divides each slot into two equal slots. The radiation efficiency is improved by the dual-slot configuration at the two operating frequencies 28 and 38 GHz. The bandwidth at 28 GHz-band is 1.1 GHz and at 38 GHz-band 0.9 GHz. The peak value of the gain at the 28 GHz-band is 5.4 dBi with radiation efficiency of 80.5% and at the 38 GHz-band 6 dBi with radiation efficiency of 82%. To verify the achieved numerical results by simulations, a prototype of the antenna is fabricated and subjected to practical measurements showing good consent with the simulation results.