Work

Theoretical Modeling of Substrate-Integrated Impedance Surfaces

Year: 2025

Type: article

Abstract: Substrate-integrated impedance surfaces (SIIS) or substrate-integrated metasurfaces have recently been proposed to tailor the dispersion and eigenmodes of waveguides, resonators, and cavity antennas, as well as to develop reconfigurable epsilon-near-zero (ENZ) channel with enhanced supercoupling, electric field localization, and sensitivity to perturbations. Here, we present a compact analytical model for calculating the effective surface impedance of the capacitive SIIS formed by a one-dimensional (1D) array of blind vias embedded in a substrateintegrated waveguide (SIW). The analytical model is validated using numerical examples and simulations, achieving good accuracy even for SIISs consisting of the non-diluted and dense array of blind vias. Our theoretical results may be beneficial for SIIS-loading techniques and SIWs, which are critical to realizing the full potential of the next-generation microwave/millimeter-wave communication, sensing, and cavity quantum electrodynamics (cQED) systems.

Source: IEEE Transactions on Antennas and Propagation

DOI: 10.1109/tap.2025.3558591

Authors: Asim Al-Khaibari, Nanshu Wu, Hakan Bağci, Danilo Erricolo, Pai-Yen Chen

Institutions: University of Illinois Chicago, King Abdullah University of Science and Technology

Language: English

Topic: Microwave Engineering and Waveguides

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $2,645

Funder: National Science Foundation