Open AccessProceedings Article
Leaky wave antenna based on composite right/left handed substrate integrated waveguide
Cheng Jin,Arokiaswami Alphones,Ong Ling Chuen +2 more
- pp 1997-2000
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TLDR
In this paper, a periodically loaded leaky wave antenna based on composite right/left handed substrate integrated waveguide (CRLH SIW) is proposed, where the series capacitance contributed by etching periodically transverse slots in the upper side of the waveguide and shunt inductance contributed by metallic inductive multiple posts shorted to the ground in the rectangular SIW results a transmission line with left-handed property.Abstract:
A periodically loaded leaky wave antenna based on composite right/left handed substrate integrated waveguide (CRLH SIW) is proposed in this paper. The series capacitance contributed by etching periodically transverse slots in the upper side of the waveguide and shunt inductance contributed by metallic inductive multiple posts shorted to the ground in the rectangular SIW results a transmission line with left-handed property. With this configuration, a frequency scanned leaky wave antenna is designed by cascading 13 unit cells. Frequency responses and radiation patterns of the compact structure are measured and the experimentally observed results confirm the expected scanning leaky wave behavior of the proposed periodic CRLH SIW.read more
Citations
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Journal ArticleDOI
Leaky-Wave Radiation Behavior From a Double Periodic Composite Right/Left-Handed Substrate Integrated Waveguide
Cheng Jin,Arokiaswami Alphones +1 more
TL;DR: In this paper, a double periodic composite right/left-handed (CRLH) substrate integrated waveguide (SIW) is proposed based on the transmission line theory, and a new leaky-wave radiation is observed at low frequency below the left-handed passband.
Proceedings ArticleDOI
Low loss slow-wave unit based on even-mode bilateral broadside-coupled suspended microstrip line
Lan Cui,Wen Wu,Dagang Fang +2 more
TL;DR: In this article, a low loss slow-wave meander-line unit for frequency scanning antennas based on the evenmode bilateral broadside-coupled suspended microstrip line (BSML) is presented.
Dissertation
Study of compact planar antennas for multi and wide band applications
Abstract: This thesis explores different compact planar antenna structures and their applicability in the field of microwave engineering. Miniaturized compact antennas that can provide wide bandwidth, multiple bands of resonance at desired frequencies, good return loss, high gain have always been in demand in the antenna industry. Keeping these desired aspects in mind, the work presented aims at proposing novel antenna designs that have improved performance characteristics in comparison to the ones reported in the literature till date. The overall contribution can be divided into three parts. In the first part, an analytical procedure called singular perturbation method has been performed for a double periodic transmission line structure with both inductance and capacitance modulated. The method has been employed to analyze a double periodic composite right/left handed (CRLH) leaky wave structure. Numerical expressions have been derived from which we have obtained the dispersion characteristics, propagation constant and radiation characteristics of the structure. We have also included the modulation of the permeability along with permittivity which increases the degree of freedom of the analysis. The radiation efficiency has been plotted as a function of antennas length to illustrate the effect of modulating indices on the antenna performance. The theoretical, simulated and the measured results seem to be in good agreement, thus justifying the application of the singular perturbation method on multiple scales for similar kind of structures. The next work proposes a novel leaky wave antenna design based on CRLH metamaterials which has been implemented on a substrate integrated waveguide(SIW) platform. It operates
Journal ArticleDOI
TE20 mode substrate integrated waveguide based high gain eight‐beam leaky‐wave antenna for multi‐directional radiation coverage
Book
Double Periodic Composite Right/Left Handed Metamaterials
TL;DR: Double Periodic Composite Right/Left Handed Metamaterial (DP-CRLH MTM), a new transmission line (TL) double periodically loaded with a pair of alternate capacitances and/or inductances, is introduced in this book.
References
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Book
Microstrip Lines and Slotlines
TL;DR: In this article, the authors present a quasi-static analysis of an Enclosed Microstrip and a Slot-Coupled Microstrip Line, as well as a fullwave analysis of Discontinuity Inductance Evaluation.
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Planar negative refractive index media using periodically L-C loaded transmission lines
TL;DR: In this article, the authors proposed an alternate perspective on the design and function of such materials that exploits the well-known L-C distributed network representation of homogeneous dielectrics.
Journal ArticleDOI
Single-layer feed waveguide consisting of posts for plane TEM wave excitation in parallel plates
Jiro Hirokawa,Makoto Ando +1 more
TL;DR: In this article, a novel feed structure was proposed to excite a plane TEM wave in a parallel-plate waveguide, which is composed of densely arrayed posts on the same layer as the parallel plate.
Proceedings ArticleDOI
A New Travelling Wave Antenna in Microstrip
TL;DR: In this paper, the radiation characteristics of the first higher order mode of microstrip lines are investigated, and a simple travelling wave antenna element is scribed, having a larger bandwidth compared with resonator antennas.
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