Open AccessProceedings Article
Three metamaterial-based gap waveguides between parallel metal plates for mm/submm waves
Per-Simon Kildal
- pp 17-21
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TLDR
In this article, the basic ideas of how local waveguides and transmission lines can be designed to propagate along desired paths in the air gap between two metal surfaces are presented, related to the performance of artificial magnetic conductors, EBG surfaces and soft and hard surfaces.Abstract:
This paper presents the basic ideas of how local waveguides and transmission lines can be designed to propagate along desired paths in the air gap between two metal surfaces. The principle of operation is related to the performance of artificial magnetic conductors, EBG surfaces and soft and hard surfaces. Three different major types of gap waveguides are described: ridge gap waveguides, microstrip gap lines and groove gap waveguides. Different realizations of the cut-off structures suppressing normal parallel plate modes are described, as well as expected applications, and possible problem areas preferably seen as research challenges.read more
Citations
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Journal ArticleDOI
Design and experimental verification of ridge gap waveguide in bed of nails for parallel-plate mode suppression
Per-Simon Kildal,Ashraf Uz Zaman,Eva Rajo-Iglesias,Esperanza Alfonso,Alejandro Valero-Nogueira +4 more
TL;DR: In this paper, the ridge gap waveguide is used to verify the large bandwidth and low losses of the quasi-transverse electromagnetic (TEM) mode propagating along the guiding ridge.
Journal ArticleDOI
Wide-Band Slot Antenna Arrays With Single-Layer Corporate-Feed Network in Ridge Gap Waveguide Technology
Ashraf Uz Zaman,Per-Simon Kildal +1 more
TL;DR: In this paper, a single-layer, wideband, and low-loss corporate-feed networks for slot antenna arrays are described, where the antenna is built using ridge gap waveguide technology, formed between two parallel metal plates.
Journal ArticleDOI
Design and Fabrication of a High-Gain 60-GHz Corrugated Slot Antenna Array With Ridge Gap Waveguide Distribution Layer
TL;DR: In this paper, a wideband high-gain high-efficiency $16 \times 16$ -element slot antenna array is presented for 60-GHz band applications, which is designed based on gap waveguide technology.
Journal ArticleDOI
Narrow-Band Microwave Filter Using High-Q Groove Gap Waveguide Resonators With Manufacturing Flexibility and No Sidewalls
TL;DR: In this article, a new type of narrow band filter with good electrical performance and manufacturing flexibility, based on the newly introduced groove gap waveguide technology, was presented, which works at Ku band with 1% fractional bandwidth.
Journal ArticleDOI
2 $\times$ 2-Slot Element for 60-GHz Planar Array Antenna Realized on Two Doubled-Sided PCBs Using SIW Cavity and EBG-Type Soft Surface fed by Microstrip-Ridge Gap Waveguide
TL;DR: In this paper, a wideband 2x2-slot element for a 60 GHz antenna array is designed by making use of two double-sided printed circuit boards (PCBs).
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
Local Metamaterial-Based Waveguides in Gaps Between Parallel Metal Plates
TL;DR: The ridge gap waveguide as mentioned in this paper is a metamaterial-based waveguide that can be realized in a narrow gap between two parallel metal plates by using a texture or multilayer structure on one of the surfaces.
Journal ArticleDOI
Artificially soft and hard surfaces in electromagnetics
TL;DR: In this paper, the concept of soft and hard surfaces is treated in detail, considering different geometries, and it is shown that both the hard and soft boundaries have the advantage of a polarizationindependent reflection coefficient for geometrical optics ray fields, so that a circularly polarized wave is circularly polarization in the same sense after reflection.
Journal ArticleDOI
A novel TEM waveguide using uniplanar compact photonic-bandgap (UC-PBG) structure
TL;DR: In this article, a photonic bandgap (PBG) structure is proposed to realize a magnetic surface in the stopband and is used in the waveguide walls to provide magnetic boundary conditions.
Journal ArticleDOI
Definition of artificially soft and hard surfaces for electromagnetic waves
TL;DR: The widely used transversely corrugated surfaces and other alternative surfaces having the same anisotropic surface impedance deserve a common name as discussed by the authors, and it is proposed to call them soft surfaces by analogy with the soft surfaces in acoustics.