2025-08-18 マサチューセッツ工科大学（MIT）
＜関連情報＞
- https://news.mit.edu/2025/shape-changing-antenna-more-versatile-sensing-and-communication-0818
- https://hcie.csail.mit.edu/research/Meta_antenna/Meta-antenna.html
メタアンテナ：機械的に周波数再構成可能なメタマテリアルアンテナ
Meta-antenna: Mechanically Frequency Reconfigurable Metamaterial Antennas
Marwa AlAlawi, Regina Zheng, Sooyeon Ahn, Katherine Yan, Ticha Sethapakdi , Junyi Zhu , Stefanie Mueller
Figure 1. a) Meta-antennas are mechanically reconfigurable metamaterial antennas that dynamically transform between expanded and retracted states. (b) As Meta-antennas deform, their resonance frequency shifts between their different configu- rations states. (c) An adaptable Meta-antenna headset that switches between noise-canceling and transparent modes. (d) A smart curtain that adjusts light levels based on the antenna’s expanded state.
We introduce Meta-antenna, a design and fabrication pipeline for creating frequency reconfigurable antennas while making use of a single type of mechanical metamaterial structure. Unlike traditional static antenna systems with fixed radiation patterns and frequency responses per geometry, Meta-antenna leverages mechanical reconfiguration to alter the radiation and geometry characteristics of the antenna, making it more versatile for sensing and communication. Meta-antenna provides a design space of resonance frequency from 500 MHz to 6.3 GHz (≥10dB) upon the structure’s compression, bending, or rotation. Additionally, we provide an Ansys-based editor that allows users to generate metamaterial antenna geometries and simulate their resonance frequency. We also provide a code template for Meta-antenna based sensing interactions. Our technical evaluation demonstrates that our fabricated Meta-antenna structures remain functional even after 10,000 compression cycles. Finally, we contribute three example applications showcasing Meta-antenna’s potential in adaptive personal devices, smart home systems, and tangible user interfaces.
