Broadband source-surrounded cloak for on-chip antenna radiation pattern protection
arXiv:2504.09838 · doi:10.3390/photonics13070606
Abstract
As the frequency range of electromagnetic wave communication continues to expand and the integration of integrated circuits increases, electromagnetic waves emitted by on-chip antennas are prone to scattering from electronic components, which limits further improvements in integration and the protection of radiation patterns. Cloaks can be used to reduce electromagnetic scattering; however, they cannot achieve both broadband and omnidirectional effectiveness simultaneously. Moreover, their operating modes are typically designed for scenarios where the source is located outside the cloak, making it difficult to address this problem. In this work, we propose a dispersionless air-impedance-matched metamaterial over the 2-8 GHz bandwidth that achieves an adjustable effective refractive index ranging from 1.1 to 1.5, with transmittance maintained above 93%. Based on this metamaterial, we introduce a broadband source-surrounded cloak that can guide electromagnetic waves from a broadband source surrounded by the cloak in any propagation direction to bypass obstacles and reproduce the original wavefronts outside the cloak. Thereby protecting the radiation pattern from distortion due to scattering caused by obstacles. Our work demonstrates significant potential for enhancing the integration density of integrated circuits and improving the operational stability of communication systems.
5 pages, 5 figures, 1 table
References in corpus (7)
- Hiding Under the Carpet: a New Strategy for Cloaking
- Controlling mass and energy diffusion with metamaterials
- Non-Hermitian Topological Metamaterials with Odd Elasticity
- Topological thermal transport
- Simultaneously realizing thermal and electromagnetic cloaking by multi-physical null medium
- Active thermal metasurfaces for remote heating/cooling by mimicking negative thermal conductivity
- Experimental demonstration of a thermal-EM concentrator for enhancing EM signals and converging heat fluxes simultaneously