Accurate Sub-Structure Characteristic Mode Analysis of Dielectric Resonator Antennas With Finite Ground Plan

Huang, Shaode; Wang, Chao‐Fu; Pan, Jin; Yang, Dan

doi:10.1109/tap.2021.3070648

Cited by 23 publications

(5 citation statements)

References 27 publications

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“…In [59] a PEC-EFIE-based approach is proposed where the modes are found on a portion of the structure only, and the rest of the structure is treated as a background. In [60], [61] this so called sub-structure formulation is generalized for combined PEC and dielectric structures. Sub-structure formulations have also been developed with the combined VSIO [32], [53].…”

Section: F Sub-structure Formulationmentioning

confidence: 99%

“…CMs obtained with the sub-structure formulation are not identical with the ones of the full-structure formulation [53], [59]- [61], while they share, e.g., similar orthogonality properties [62]. These modes have been found to be particularly useful in cases where the solutions only on a part of the structure are of interest [32], [53], [61].…”

Section: F Sub-structure Formulationmentioning

confidence: 99%

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Integral Operator-Based Characteristic Mode Theory for Conducting, Material, and Lossy Structures

Ylä‐Oijala

Kuosmanen

Wallén

2024

IEEE Trans. Antennas Propagat.

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Integral operator-based theory of characteristic modes (CMs) for conducting, material, and lossy structures is reviewed. CMs are defined as solutions of a generalized eigenvalue equation (GEE). These GEEs are presented for various surface and volume integral operators and material structures. Interpretation of the characteristic eigenvalues in terms of electromagnetic power is studied based on the Mie expansion and integral operator formalism. Orthogonality and diagonalizing properties of the CMs are summarized. Challenges related to dielectric-magnetic bodies, lossy structures and spurious modes are discussed, as well as differences between the surface and volume operator approaches.

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Section: F Sub-structure Formulationmentioning

confidence: 99%

Section: F Sub-structure Formulationmentioning

confidence: 99%

Integral Operator-Based Characteristic Mode Theory for Conducting, Material, and Lossy Structures

Ylä‐Oijala

Kuosmanen

Wallén

2024

IEEE Trans. Antennas Propagat.

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“…According to the description in Ref. [26], the induced current on the metallic conductor surface can be expressed as a linear superposition of orthogonal characteristic currents…”

Section: CM Design Of the Rfss Elementmentioning

confidence: 99%

“…However, the ECM-based designs lack electromagnetic field insight into the operating mechanism. To this end, the theory of characteristic modes (TCM) [26] has recently been used to guide the design of antennas [7,[27][28][29] and metasurfaces [30,31] from a physical perspective. Inspired by TCM, a dual-polarized metasurface lens is proposed for improving antenna aperture efficiency in Ref.…”

Section: Introductionmentioning

confidence: 99%

Characteristic Mode Design of Dual‐Band Reconfigurable Frequency Selective Surface

Ning

Ding

et al. 2022

Chinese J of Electronics

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In this paper, a characteristic mode design of dual-band reconfigurable frequency selective surface (RFSS) with transmission/reflection band is presented. Through the visualization of modal behavior, the theory of characteristic modes (TCM) is used to guide design from a physical perspective. At first, the dominant modes of two basic structures that have a major impact on reflection are clarified by observing the modal behaviors. The appropriate combination of the two structures forms an initial element with bandpass properties. Then, the positive-intrinsic-negative (PIN) diode is placed in the middle of the microstrip line and as the state shifts from ON to OFF, the dominant mode resonant frequency of the microstrip line shifts upward. Such a feature can be used to design the transmission/reflection RFSS. Experimentally, a dual-band RFSS operating at 8.8 GHz and 10.4 GHz is designed and fabricated. The measured results that agree with the full-wave simulation validate the proposed TCM-based design.

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“…Moreover, we recently employed CMA to study coupling and interference to wires and other 2-D structures [28][29][30]. However, applying CMA for complex shapes composed of one or more dielectric materials is still under development [31][32][33][34][35][36][37].…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Compatibility Study of Quadcopter Uavs: Characteristic Mode Analysis of the Frame's Material and Shape Effect

Hamdalla¹,

Roacho-Valles²,

Caruso³

et al. 2022

PIER M

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The variation in flight attitude, line-of-sight, and speed of unmanned aerial vehicles (UAVs) affect their polarization-dependent coupling cross-section and resultant compatibility to pulsed electromagnetic energy. Here, we present the out-of-band electromagnetic compatibility (EMC) effects of UAV frame material and shape on the UAV subcomponents. Characteristic mode analysis (CMA) is employed to study the fundamental modes supported by UAVs which facilitate the interpretation of its electromagnetic response and the prediction of its effect on the nearby components. Using CMA, we develop a framework that optimizes the placement of wires and traces of printed circuit boards (PCBs) on the frame mitigating interference from undesired electromagnetic sources. A 3-D scanner is used to provide four versions of a quadrotor UAV to study the frame shape effect on the coupling. Materials of differing permittivity are assigned to these frame versions to assist in understanding the material effect on the EM coupling to the UAV.

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Accurate Sub-Structure Characteristic Mode Analysis of Dielectric Resonator Antennas With Finite Ground Plan

Cited by 23 publications

References 27 publications

Integral Operator-Based Characteristic Mode Theory for Conducting, Material, and Lossy Structures

Integral Operator-Based Characteristic Mode Theory for Conducting, Material, and Lossy Structures

Characteristic Mode Design of Dual‐Band Reconfigurable Frequency Selective Surface

Electromagnetic Compatibility Study of Quadcopter Uavs: Characteristic Mode Analysis of the Frame's Material and Shape Effect

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