Performance enhancement of novel antipodal Vivaldi antenna with irregular spacing distance slots and modified-w-shaped metamaterial loading

Deng, Run-chun; Yang, Xiaoming; Ma, Bo; Li, Tianqian; Chen, Hong‐Yuan; Yu, Yang; He, Hang; Chen, Yuanwen; Tang, Zhu

doi:10.1007/s00339-018-2298-6

Cited by 7 publications

(3 citation statements)

References 37 publications

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“…They also motivated many research groups to explore their feasibility to increase the effective aperture of antennas. ZIMs and LIMs (or NZIMs) were used to improve the gain of wide range of planar antennas such as patch antenna [53], [73]− [77], Vivaldi antenna [78]− [81], antipodal tapered slot antenna [82], [83], slot antenna [84], [85], bow-tie antenna [86], quasi-yagi antenna [87], and horn antenna [88].…”

Section: A Gain Improvement Based On Zim/limmentioning

confidence: 99%

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Overview of Planar Antenna Loading Metamaterials for Gain Performance Enhancement: The Two Decades of Progress

2022

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Metamaterials (MTMs) are artificially engineered materials with unique electromagnetic properties not occurring in natural materials. MTMs have gained considerable attention owing to their exotic electromagnetic characteristics such as negative permittivity and permeability, thereby a negative refraction index. These extraordinary properties enable many practical applications such as super-lenses, and cloaking technology, and are used to design different electromagnetic devices like filters, polarization converters, sensors, and absorbers. Advances in MTMs have made new application fields to emerge in communication subsystems, especially in the field of antennas. MTMs are usually arranged in front or above the radiating element, or incorporated in the same substrate to improve the performance of planar antennas, in terms of improving directivity, gain, bandwidth, and efficiency, reducing the size and mutual coupling, and deflecting the radiation characteristics. High gain antennas are demanded in modern wireless communication systems. Their importance is in improving the signal strength by reducing the interference and alleviating the free space path loss. This review paper provides a brief introduction to MTMs, with the focus on their operating principles. Furthermore, a detailed study of antenna gain enhancement based on the various properties of MTMs is carried out. MTMs with low values of constitutive parameters; zero-index material (ZIM), lowindex material (LIM), epsilon-near-zero (ENZ), and mu-near-zero (MNZ) are discussed in detail in the context of their capability to enhance the gain of a broad class of planar antennas. The low impedance property and lensing property, which is achieved by three different characteristics: high refractive index (HRI), gradient refractive index (GRIN), and negative refractive index (NRI) materials, are loaded to planar antennas for gain enhancement. The scope of this review has been limited to antennas that were experimentally validated in the respective source papers.INDEX TERMS Metamaterials (MTMs), gain enhancement, low impedance MTM, MTM lens, planar antennas, ZIM.

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Section: A Gain Improvement Based On Zim/limmentioning

confidence: 99%

“…Figures 7(a) and (b) show the fabricated prototype of the antenna with ZIM unit cells and the antenna's gain with single-and multi-layer of ZIMs [78]. In [81], modified wshape metamaterial (MWSM) have been proposed with zero index property at 10 GHz, as illustrated in Fig. 8(a).…”

Section: Source Of Electromagnetic Rays (An Antenna)mentioning

confidence: 99%

Overview of Planar Antenna Loading Metamaterials for Gain Performance Enhancement: The Two Decades of Progress

2022

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“…In [31], 1 × 8 antipodal Vivaldi antenna array is implemented with an anisotropic metasurface (MS) and located at the aperture, resulting in low cut off frequency. Modified W shaped metamaterial unit cells are implemented in [30]. In this, the gain is increased by including slots into the flare with an irregular spacing distance between each other.…”

Section: H Metamaterialsmentioning

confidence: 99%

A Survey of Performance Enhancement Techniques of Antipodal Vivaldi Antenna

2020

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The increasing proliferation of advanced devices for UWB, 5G communication, micrometerwave, and millimeter-wave communication demands an antenna which can handle huge data rates, provides high gain and stable radiation pattern as a panacea of most of the current wireless communication problems. Many different antenna designs have been proposed by the researchers but, Antipodal Vivaldi Antenna (AVA) has drawn the attention of most of the researchers because of its high gain, wide bandwidth, less radiation loss, and stable radiation pattern. Different methods are presented to make AVA more compact while maintaining the performance of an antenna to an acceptable level. These different methods are substrate choice, flare shape, slots, and feeding connectors. Also, AVA performance can be enhanced by incorporating corrugation, dielectric lens, patch in between two flares of AVA, balanced AVA (BAVA), metamaterial, computational intelligence (CI), and AVA array. The AVA performance enhancement techniques modify the electrical and physical properties of an antenna which in turn improves its performance. A large number of performance enhancement methods of AVA design have been proposed, however, no comprehensive study exists to categorize these performance enhancement techniques and outline their concepts, advantages, disadvantages, and applications. So, in this paper, we have attempted to outline all methods available for enhancing and optimizing the parameters of AVA. Additionally, to validate some of the important performance enhancement methods, they are incorporated in the basic conventional AVA design and further simulation results are obtained for the same which are in line with the surveyed literature. Each method is explained in detail by incorporating its key points, merits, and demerits. Moreover, illustrations from the literature are given to demonstrate improvement in the parameters as a result of applying a particular performance enhancement technique. INDEX TERMS Antipodal Vivaldi antenna (AVA), AVA array, balanced antipodal Vivaldi antenna (BAVA), corrugations, dielectric lens, metamaterial, parasitic patch, slots.

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Wideband Antipodal Vivaldi Antenna Using Metamaterial for Micrometer and Millimeter Wave Applications

Kumar

Dixit

2021

J Infrared Milli Terahz Waves

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Performance enhancement of novel antipodal Vivaldi antenna with irregular spacing distance slots and modified-w-shaped metamaterial loading

Cited by 7 publications

References 37 publications

Overview of Planar Antenna Loading Metamaterials for Gain Performance Enhancement: The Two Decades of Progress

Overview of Planar Antenna Loading Metamaterials for Gain Performance Enhancement: The Two Decades of Progress

A Survey of Performance Enhancement Techniques of Antipodal Vivaldi Antenna

Wideband Antipodal Vivaldi Antenna Using Metamaterial for Micrometer and Millimeter Wave Applications

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