Journal ArticleDOI
Coupling reduction in enclosures and cavities using electromagnetic band gap structures
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TLDR
In this article, the use of electromagnetic band gap (EBG) structures is proposed for surface current suppression, and the effectiveness of the EBG as an EMI suppresser is demonstrated using numerical simulations and measurements.Abstract:
The physical mechanism behind electromagnetic interference (EMI) is the coupling of energy between different primary and secondary sources of radiation and components within the package or chassis. This coupling can be either through conduction or radiation. However, regardless of the coupling mechanism, surface currents are needed to support the electromagnetic fields that eventually cause radiation, which in turn, constitute the EMI in the victim component. Minimizing these surface currents is considered a fundamental and critical step in minimizing EMI. In this work, we address novel strategies to confine surface currents. Unlike the traditional use of lossy materials and absorbers, which can be costly and can suffer from considerable disadvantages including mechanical and thermal reliability leading to limited life time, we consider the use of electromagnetic band gap (EBG) structures. These structures are inherently suited for surface current suppression. Their design is straightforward, and they are inexpensive to implement and do not suffer from the limitation of the previous methods used for the type of EMI suppression previously described. The effectiveness of the EBG as an EMI suppresser will be demonstrated using numerical simulations and measurements.read more
Citations
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Journal ArticleDOI
A Novel Quad-Band Diversity Antenna for LTE and Wi-Fi Applications With High Isolation
TL;DR: In this article, a planar inverted F-shaped antennas (PIFA) constructed by a meandered line and folded patch with interdigitated capacitive strips connected to the folded patch is presented.
Journal ArticleDOI
Wideband Circuit Model for Planar EBG Structures
TL;DR: In this paper, a comprehensive equivalent circuit model is presented to accurately characterize an important class of electromagnetic bandgap (EBG) structures over a wide range of frequencies, based on a combination of lumped elements and transmission lines.
Journal ArticleDOI
Compact EBG Structures for Reduction of Mutual Coupling in Patch Antenna MIMO Arrays
TL;DR: In this paper, a new arrangement of EBG structures is presented for reducing mutual coupling between patch antenna MIMO arrays, which operate at 5.35 GHz which is defined for wireless application.
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Compact mobile handset MIMO antenna for LTE700 applications
Hongpyo Bae,Frances J. Harackiewicz,Myun-Joo Park,Taekyun Kim,Namhoon Kim,Deokyun Kim,Byungje Lee +6 more
TL;DR: In this paper, the authors proposed a compact mobile handset MIMO antenna for LTE-700 applications, which consists of two side-to-side printed symmetrical printed inverted-F antennas (PIFAs), a capacitively coupled feed, a suspended line, and a branch line.
Journal ArticleDOI
Hybrid Microstrip T-Stub/Defected Ground Structure Cell for Electromagnetic Interference Bandpass Filter Design
TL;DR: In this paper, a hybrid microstrip T-stub/defected ground structure (HMT/DGS) cell is presented, which is composed of a microstrip tstub and an interdigital DGS with the broadside-coupled (BC) transition.
References
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Journal ArticleDOI
High-impedance electromagnetic surfaces with a forbidden frequency band
TL;DR: In this paper, a new type of metallic structure has been developed that is characterized by having high surface impedance, which is analogous to a corrugated metal surface in which the corrugations have been folded up into lumped-circuit elements and distributed in a two-dimensional lattice.
Journal ArticleDOI
Metallo-dielectric electromagnetic bandgap structures for suppression and isolation of the parallel-plate noise in high-speed circuits
TL;DR: In this paper, a novel approach for the suppression of the parallel-plate waveguide (PPW) noise in high-speed printed circuit boards is presented, where one of the two conductors forming the PPW is replaced by an electromagnetic bandgap (EBG) surface.
Journal ArticleDOI
A novel power plane with integrated simultaneous switching noise mitigation capability using high impedance surface
TL;DR: In this paper, a novel technique for suppressing power plane resonance at microwave and radio frequencies is presented, which consists of replacing one of the plates of a parallel power plane pair with a high impedance surface or electromagnetic band gap structure.
Journal ArticleDOI
Electromagnetic interference (EMI) reduction from printed circuit boards (PCB) using electromagnetic bandgap structures
S. Shahparnia,Omar M. Ramahi +1 more
TL;DR: In this paper, an effective method for suppressing PCB radiation from their power bus over an ultrawide range of frequencies by using metallo-dielectric electromagnetic band-gap structures was introduced.
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