968 citations · 1.4k across the 16 of their papers we have counts for
16 papers
Site-Specific Channel Modeling and Optimization of RIS-Assisted Multiuser MISO Systems
Ziqi Liu, Wei Yu, Sean Victor Hum
This paper presents a physics-based channel modeling and optimization framework for reconfigurable intelligent surface (RIS)-assisted downlink multi-user multiple-input single-outp…
Inverse Design of Multi-band Reflective Polarizing Metasurfaces Using Generative Machine Learning
Parinaz Naseri, George Goussetis, Nelson J. G. Fonseca +1
Electromagnetic linear-to-circular polarization converters with wide- and multi-band capabilities can simplify antenna systems where circular polarization is required. Multi-band s…
Inverse Design and Experimental Verification of a Bianisotropic Metasurface Using Optimization and Machine Learning
Stewart Pearson, Parinaz Naseri, Sean V. Hum
Electromagnetic metasurfaces have attracted significant interest recently due to their low profile and advantageous applications. Practically, many metasurface designs start with a…
Extreme Beam-forming with Impedance Metasurfaces Featuring Embedded Sources and Auxiliary Surface Wave Optimization
Gengyu Xu, Vasileios G. Ataloglou, Sean V. Hum +1
We present the end-to-end design of compact passive and lossless metasurface (MTS) antennas with integrated feeds. The complete low-profile system consists of a single-layered reac…
Extreme Beam-forming with Metagrating-assisted Planar Antennas
Gengyu Xu, Sean V. Hum, George V. Eleftheriades
We present a highly efficient metagrating-assisted antenna (MGA) architecture with a simple integrated feed. Power from a localized line source is distributed throughout the arbitr…
An Efficient Integral Equation Method for Full-wave Analysis of Inhomogeneous Electromagnetic Surfaces with Connected Conductors
Reza Gholami, Parinaz Naseri, Piero Triverio +1
In this paper, a generalized macromodeling approach is presented to simulate complex electromagnetic (EM) surfaces consisting of unit cells with connected conductors. Macromodels o…
A Combined Machine-Learning / Optimization-Based Approach for Inverse Design of Nonuniform Bianisotropic Metasurfaces
Parinaz Naseri, Stewart Pearson, Zhengzheng Wang +1
Electromagnetic metasurface design based on far-field constraints without the complete knowledge of the fields on both sides of the metasurface is typically a time consuming and it…
Optimization of Scalar and Bianisotropic Electromagnetic Metasurface Parameters Satisfying Far-Field Criteria
Stewart Pearson, Sean V. Hum
Electromagnetic metasurfaces offer the capability to realize almost arbitrary power conserving field transformations. These field transformations are governed by the generalized sh…
Approach to the Analysis and Synthesis of Cylindrical Metasurfaces with Non-circular Cross Sections Based on Conformal Transformations
Gengyu Xu, George V. Eleftheriades, Sean V. Hum
We present methods for analyzing and designing cylindrical electromagnetic metasurfaces with non-circular cross sections based on conformal transformations. It can be difficult to…
A Generative Machine Learning-Based Approach for Inverse Design of Multilayer Metasurfaces
Parinaz Naseri, Sean V. Hum
The synthesis of a metasurface exhibiting a specific set of desired scattering properties is a time-consuming and resource-demanding process, which conventionally relies on many cy…
A Discrete Fourier Transform-Based Framework for Analysis and Synthesis of Cylindrical Omega-bianisotropic Metasurfaces
Gengyu Xu, George V. Eleftheriades, Sean V. Hum
This paper presents a framework for analyzing and designing cylindrical omega-bianisotropic metasurfaces, inspired by mode matching and digital signal processing techniques. Using…
A Fast Macromodeling Approach to Efficiently Simulate Inhomogeneous Electromagnetic Surfaces
Utkarsh R. Patel, Piero Triverio, Sean V. Hum
The full-wave simulation of complex electromagnetic surfaces such as reflectarrays and metasurfaces is a challenging problem. In this paper, we present a macromodeling approach to…
A Complete Surface Integral Method for Broadband Modeling of 3D Interconnects in Stratified Media
Shashwat Sharma, Utkarsh R. Patel, Sean V. Hum +1
A surface integral equation solver is proposed for fast and accurate simulation of interconnects embedded in stratified media. A novel technique for efficient computation of the mu…
A Macromodeling Approach to Efficiently Compute Scattering from Large Arrays of Complex Scatterers
Utkarsh R. Patel, Piero Triverio, Sean V. Hum
Full-wave electromagnetic simulations of electrically large arrays of complex antennas and scatterers are challenging, as they consume large amount of memory and require long CPU t…
A Novel Single-Source Surface Integral Method to Compute Scattering from Dielectric Objects
Utkarsh R. Patel, Piero Triverio, Sean V. Hum
Using the traditional surface integral methods, the computation of scattering from a dielectric object requires two equivalent current densities on the boundary of the dielectric.…
Reconfigurable Reflectarrays and Array Lenses for Dynamic Antenna Beam Control: A Review
Sean Victor Hum, Julien Perruisseau-Carrier
Advances in reflectarrays and array lenses with electronic beam-forming capabilities are enabling a host of new possibilities for these high-performance, low-cost antenna architect…