Cheng Yang

Cheng Yang
Technische Universität Hamburg | TUHH · Institute of Electromagnetic Theory

Doctor of Engineering

About

27
Publications
2,505
Reads
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360
Citations
Introduction
Cheng Yang currently works at the Institute of Electromagnetic Theory, Technische Universität Hamburg. Cheng does research in Computational Electromagnetics, Microwave Measurements,..

Publications

Publications (27)
Preprint
There have been considerable efforts devoted to the study of topological phases in certain non-Hermitian systems that possess real eigenfrequencies in the presence of gain and loss. However, it is challenging to experimentally realize such non-Hermitian topological insulators in either quantum or photonic systems, due to the difficulties in introdu...
Article
In this paper the orbital angular momentum (OAM) mode system, known from antenna communication, is applied and extended to various multiconductor transmission lines. In the context of this work, an OAM mode describes the excitation of a multi-port system with a voltage distribution that is an eigenmode of a cyclic system. The OAM mode system is the...
Article
Lumped-element grids provide an attractive option for wave propagation control in electromagnetic compatibility (EMC) engineering. This article investigates the peak shielding effectiveness (SE) of a diode grid used for protection of enclosures with apertures against high-intensity radiation fields (HIRFs). The nonlinearly loaded aperture is invest...
Article
A recently developed concept for designing passive microwave components using functional vertical interconnect accesses (vias) for vertical integration in printed circuit boards (PCBs) is extended and transferred to the low temperature co-fired ceramic (LTCC) technology. Given the changed material properties and new technology constraints, it is sh...
Article
This paper proposes a hierarchical adaptive sampling scheme for passivity characterization of large-scale linear lumped macromodels. Here, large-scale is intended both in terms of dynamic order and especially number of input/output ports. Standard passivity characterization approaches based on spectral properties of associated Hamiltonian matrices...
Preprint
This paper proposes a hierarchical adaptive sampling scheme for passivity characterization of large-scale linear lumped macromodels. Here, large-scale is intended both in terms of dynamic order and especially number of input/output ports. Standard passivity characterization approaches based on spectral properties of associated Hamiltonian matrices...
Article
Full-text available
Higher-order topological insulators (HOTIs) represent a new family of topological materials featuring quantized bulk polarizations and zero-dimensional corner states. In recent years, zero-dimensional corner states have been demonstrated in two-dimensional systems in the form of quadrupole modes or dipole modes. Due to the challenges in designing a...
Article
In this article, we present a hybrid numerical scheme to compute the transient electromagnetic fields scattered by a metallic structure loaded with lumped nonlinear loads. The proposed scheme is based on three successive steps. First, the field coupling problem to the structure with the nonlinear loads removed is solved in the frequency domain usin...
Article
Radio waves carrying orbital angular momentum (OAM) have been intensively studied in recent years with respect to generation, propagation, and communication. In this article, the effect of an infinite ground on OAM wave propagation and communication is investigated numerically using the method of moments (MoM). A circular array of half-wavelength d...
Article
There have been considerable efforts devoted to the study of topological phases in certain non-Hermitian systems that possess real eigenfrequencies in the presence of gain and loss. However, it is challenging to experimentally realize such non-Hermitian topological insulators in either quantum or photonic systems, due to difficulties in introducing...
Article
Full-text available
Intelligence at either the material or metamaterial level is a goal that researchers have been pursuing. From passive to active, metasurfaces have been developed to be programmable to dynamically and arbitrarily manipulate electromagnetic (EM) wavefields. However, the programmable metasurfaces require manual control to switch among different functi...
Article
Full-text available
The crosstalk suppression of multichannel coupled drivelines is studied for high performance integration of micro-electro-mechanical system (MEMS) arrays. By using traditional drivelines, for example, microstrip lines, the distance between adjacent drivelines should be large enough to reduce the multichannel coupling effects. As a result, the size...
Article
Digital coding metasurfaces have attracted attention due to their advantages compared to metamaterials. Many devices have been proposed by encoding the phase responses on metasurfaces such as orbit angular momentum generation, prefect absorbers, and holography. For complete manipulation for propagation of electromagnetic waves, it would be benefici...

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