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<p>Millimeter-wave (mm-Wave) communication has gained significant interest for 5G network deployments due to its ability to provide wide bandwidth for high-data-rate applications. From an antenna perspective, operating at mm-Wave is challenged by severe propagation losses and additional attenuation from user hand blockage. To address these challenges, we present a wideband, dual-polarized 1 × 8 array fabricated using a hybrid MEMS/PCB process that maintains stable gain and incorporates an integrated hand-grip-sensing function. By employing two perpendicularly arranged T-shaped, proximity-coupled square patches in a phased-array configuration, we achieve wideband operation with dual-polarized and highly stable gain. In addition, we demonstrate the feasibility of using the capacitance variation at 1&#xa0;MHz on the patch to detect its hand-grip effect, suggesting the possibility of reducing the need for an expensive sensor. The proposed 1 × 8 antenna array was fabricated using hybrid MEMS/PCB technology. The measured reflection coefficients are below − 10 dB over the frequency ranges 26.9–36.3&#xa0;GHz for − 45-degree slant polarization and 25.3–36.3&#xa0;GHz for + 45-degree slant polarization. The capacitance variation induced by finger contact on the patch antenna is approximately 160 fF. The measured results for both RF characteristics and capacitance sensing show good agreement with simulation, confirming that the proposed hybrid MEMS/PCB antenna array design is a promising candidate for 5G mm-Wave mobile devices with integrated hand-grip sensing.</p>

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Hybrid MEMS/PCB Antenna Array with Hand-grip Sensing for 5G mm-Wave Mobile Devices

  • 期刊论文

  • 发表日期：

    2026年4月7日

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  • Sung-min Sim,
  • Jeong-Ung Yoo,
  • Thi Quynh Hoa Nguyen,
  • Hae-Won Son,
  • Donggu Im,
  • Jung-Mu Kim

摘要

Millimeter-wave (mm-Wave) communication has gained significant interest for 5G network deployments due to its ability to provide wide bandwidth for high-data-rate applications. From an antenna perspective, operating at mm-Wave is challenged by severe propagation losses and additional attenuation from user hand blockage. To address these challenges, we present a wideband, dual-polarized 1 × 8 array fabricated using a hybrid MEMS/PCB process that maintains stable gain and incorporates an integrated hand-grip-sensing function. By employing two perpendicularly arranged T-shaped, proximity-coupled square patches in a phased-array configuration, we achieve wideband operation with dual-polarized and highly stable gain. In addition, we demonstrate the feasibility of using the capacitance variation at 1 MHz on the patch to detect its hand-grip effect, suggesting the possibility of reducing the need for an expensive sensor. The proposed 1 × 8 antenna array was fabricated using hybrid MEMS/PCB technology. The measured reflection coefficients are below − 10 dB over the frequency ranges 26.9–36.3 GHz for − 45-degree slant polarization and 25.3–36.3 GHz for + 45-degree slant polarization. The capacitance variation induced by finger contact on the patch antenna is approximately 160 fF. The measured results for both RF characteristics and capacitance sensing show good agreement with simulation, confirming that the proposed hybrid MEMS/PCB antenna array design is a promising candidate for 5G mm-Wave mobile devices with integrated hand-grip sensing.