A customized reduced size Antipodal Vivaldi Antenna used in Wireless Baseband Transmission for short-range communication

Abayaje, Furat; Febvre, Pascal

doi:10.1016/j.aeue.2016.10.007

Cited by 18 publications

(11 citation statements)

References 14 publications

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“…Moreover, their radiation performance can be improved with some changes in their geometrical properties. There are many Vivaldi antennas available in the literature that were designed with different techniques to be used in MWI breast cancer detection systems [11][12][13][14][15][16][17][18][19][20][21][22][23][24]. A compact antipodal Vivaldi antenna that operates as UWB reported in [11] but its gain is below 4 dB nearly at all operating frequencies and group delay has discontinuities at some frequencies.…”

Section: Mechanism Of Mwi Technique For Detection Of Breast Cancer Rementioning

confidence: 99%

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Radar-based microwave breast cancer detection system with a high-performance ultrawide band antipodal Vivaldi antenna

Özmen¹,

Kurt²

2021

Turk J Elec Eng & Comp Sci

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In this study, a novel ultra-wide band (UWB) antipodal Vivaldi antenna with three pairs of slots designed to be used as a sensor in microwave imaging (MWI) system for breast cancer detection. The proposed antenna operates in UWB frequency range of 3.05-12.2 GHz. FR4 was used as a dielectric material and as a substrate for forming the antenna that has a compact size of 36 mm x 36 mm x 1.6 mm. Frequency and time domain performance of the proposed antenna have been investigated and results show that it meets the requirements for UWB radar applications with linear phase response, nearly constant group delay, ultra-wide bandwidth and directional properties at most of the operating frequency. Then, the capacity of the proposed antenna as a sensor was tested in a monostatic microwave breast imaging system that was developed in the CST Microwave Studio (CST MWS) simulation software. In the simulation application, 50 mm radius hemi-sphreical breast models with different densities were formed and 2 mm diameter spherical tumor was placed inside them. Antennas were positioned cylindrically around the breast to send Gaussian pulse and collect backscattered signals. After signal processing steps, tumors was screened at correct positions with high resolution. Finally, a monostatic radar based breast phantom measurement system developed to automatically scan the breast phantom in the prone position. To perform experimental measurements, an electrically and anatomically realistic homogeneous breast phantom with tumor inside was fabricated. Screening of the tumor at correct location indicates that the proposed antenna and the microwave imaging system developed using this antenna are suitable for the detection of breast cancer at the early stage.

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Section: Mechanism Of Mwi Technique For Detection Of Breast Cancer Rementioning

confidence: 99%

“…GHz band, they do not meet the entire UWB band range. In [22], a 37 mm x 21 mm sized Vivaldi antenna was proposed that operates between 3.6 to > 12 GHz frequency band. The antenna is compact but has maximum 4.5 dB gain.…”

Section: Mechanism Of Mwi Technique For Detection Of Breast Cancer Rementioning

confidence: 99%

Radar-based microwave breast cancer detection system with a high-performance ultrawide band antipodal Vivaldi antenna

Özmen¹,

Kurt²

2021

Turk J Elec Eng & Comp Sci

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“…In the case of more thicker substrate fringing field increases which improves the bandwidth and provides more mechanical strength to an antenna. In the literature, the most commonly used substrate for designing AVA antenna are Flame Retardant 4 (FR-4) [45], Rogers RO4003 [10], and Rogers RT/Duroid 5880 [48]. These materials can be employed as per the required parameters and suitability for the antenna.…”

Section: A Substrate Materialsmentioning

confidence: 99%

A Survey of Performance Enhancement Techniques of Antipodal Vivaldi Antenna

Dixit

Kumar

2020

IEEE Access

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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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“…where is a singular vector of the unitary matrix, is a diagonal matrix singular value, and the diagonal elements are by order of singular value 1 ≥ 2 ≥ ⋅ ⋅ ⋅ ≥ ≥ 0. So the LMMSE channel estimation based on SVD decomposition criteria can be obtained as follows [35]:…”

Section: Svd-lmms's Channel Estimation Principle the Channel Estimatmentioning

confidence: 99%

The Channel Estimation and Modeling in High Altitude Platform Station Wireless Communication Dynamic Network

Liu

Zeng

Liu

et al. 2017

Discrete Dynamics in Nature and Society

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In order to analyze the channel estimation performance of near space high altitude platform station (HAPS) in wireless communication system, the structure and formation of HAPS are studied in this paper. The traditional Least Squares (LS) channel estimation method and Singular Value Decomposition-Linear Minimum Mean-Squared (SVD-LMMS) channel estimation method are compared and investigated. A novel channel estimation method and model are proposed. The channel estimation performance of HAPS is studied deeply. The simulation and theoretical analysis results show that the performance of the proposed method is better than the traditional methods. The lower Bit Error Rate (BER) and higher Signal Noise Ratio (SNR) can be obtained by the proposed method compared with the LS and SVD-LMMS methods.

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A customized reduced size Antipodal Vivaldi Antenna used in Wireless Baseband Transmission for short-range communication

Cited by 18 publications

References 14 publications

Radar-based microwave breast cancer detection system with a high-performance ultrawide band antipodal Vivaldi antenna

Radar-based microwave breast cancer detection system with a high-performance ultrawide band antipodal Vivaldi antenna

A Survey of Performance Enhancement Techniques of Antipodal Vivaldi Antenna

The Channel Estimation and Modeling in High Altitude Platform Station Wireless Communication Dynamic Network

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