A coplanar vivaldi antenna design with improved frequency response for microwave breast imaging

Uyanik, Cafer; Ertay, Agah Oktay; Dogu, Semih; Akduman, İbrahim; Cahinturk, Hulya

doi:10.1109/cama.2016.7815801

Cited by 5 publications

(6 citation statements)

References 9 publications

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“…Then, the detected signals are processed using microwave imaging algorithms to accurately create the The proposed design's simulation findings have been compared with a few existing works in literature and listed in Table 2. The proposed antenna offers wider bandwidth than [5,11,12,14,33,34]. It exhibits lower SAR than [11,34].…”

Section: Resultsmentioning

confidence: 99%

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Design and Analysis of a Low-profile Tapered Slot UWB Vivaldi Antenna for Breast Cancer Diagnosis

Sasikala,

Karthika,

Arunkumar

et al. 2024

PIER M

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Antennas are significant passive components in Microwave Imaging (MWI) system. The proposed work focuses on the design and analysis of a Vivaldi antenna of size 45 × 40 × 1.6 mm 3 for breast cancer diagnosis. The proposed antenna utilizes an FR4 substrate and offers a wideband response. The suggested antenna design is based on a tapered slot antenna. The design utilizes microstrip slot line transition feed as it provides good impedance matching and wide bandwidth. The proposed antenna's design attributes like the radius of the slot and tapering rate are optimized through parametric analysis to achieve desired ultra-wideband (UWB) performance. The UWB offered by the designed antenna is 13.87 GHz (2.79 GHz-16.66 GHz). A Voltage Standing Wave Ratio (VSWR) of less than 2 is obtained for the entire resonating frequency range. The proposed antenna exhibits 60% size reduction compared to the conventional Vivaldi antenna with a peak gain and directivity of 4.77 dBi and 5.84 dBi, respectively. A breast phantom has been designed and simulated for Specific Absorption Rate (SAR) calculation. The designed structure exhibits an average SAR of 0.997 W/kg. Further, the proposed antenna is fabricated and tested. The measured results agree with simulation findings. Hence, the compactness and radiation performance of the proposed antenna makes it suitable for breast cancer diagnosis.

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Section: Resultsmentioning

confidence: 99%

“…The designed structure has been optimized to achieve high bandwidth and gain. Improved frequency response through a Coplanar Vivaldi Antenna (CVA) is analyzed [12]. This antenna works from 1.3 GHz to 7.09 GHz.…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of a Low-profile Tapered Slot UWB Vivaldi Antenna for Breast Cancer Diagnosis

Sasikala,

Karthika,

Arunkumar

et al. 2024

PIER M

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“…Although the line source modeling is a simple model for computation, it causes some complications in terms of the directive nature of the illuminating field. There are some studies in the literature which try to design directive antennas to achieve localized fields for microwave imaging in practice . The interaction of a line source with a tissue is more complex compared with the interaction of a directive antenna with the tissue in terms of the localization capability.…”

Section: Forward Problem Formulationmentioning

confidence: 99%

“…There are some studies in the literature which try to design directive antennas to achieve localized fields for microwave imaging in practice. 25,26 The interaction of a line source with a tissue is more complex compared with the interaction of a directive antenna with the tissue in terms of the localization capability. Therefore, in fact, line sources allow us to test the proposed method in a relatively harder situation.…”

Section: Construction Of the Problemmentioning

confidence: 99%

Coordinate transformation aided finite element method for contour detection of breast tumors in microwave imaging

Özgün

Kuzuoğlu

2018

Numer Methods Biomed Eng

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A coordinate transformation based finite element method is presented for detecting contours of breast cancer tissues in the context of microwave imaging. The geometry and location of a single or multiple cancerous tumors inside a breast tissue are identified by constructing an inverse problem based on the genetic optimization algorithm. The expensive forward solution phase during repeated cost function evaluations is accelerated by placing a transformation medium inside the finite element mesh. This allows using a uniform or rectangular mesh even when irregular tumor geometries are considered. Therefore, the computational load is reduced. The algorithm is implemented in MATLAB using parallel programming tools. A realistic numerical breast phantom repository, which is available in the University of Wisconsin-Madison webpage, is used to test the algorithm. The performance of the algorithm is also tested by utilizing the Monte Carlo approach, where the inverse problem is run several times and the statistical parameters of the runs are determined. Various simulation results are demonstrated.

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“…In another experiment, a design of a coplanar Vivaldi antenna for breast imaging with frequency response improvement was reported [5]. Their proposed antenna design exhibited a wide impeandce bandwidth of more than 138 percent from 1.3 GHz to 7.09 GHz, and the VSWR response was improved by using a different design technique.…”

Section: Introductionmentioning

confidence: 99%

Gain Enhancement of Double-Slot Vivaldi Antenna using Corrugated Edges and Semicircle Director for Microwave Imaging Application

Witriani¹,

Amrullah²,

Darwis³

et al. 2021

J. Elektron. dan Telekomun.

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Microwave imaging, such as images for radiological inspection in the medical profession, is one of the applications utilized in ultra-wideband (UWB) frequency ranges. The Vivaldi antenna is one of the most popular antennas for this purpose. The antenna is utilized because of its simple, lightweight, and compact design, as well as its excellent efficiency and gain capabilities. In this work, we present a high-gain Vivaldi antenna for microwave imaging applications. The proposed Vivaldi antenna is designed using a double-slot structure method with the addition of corrugated edges and a semicircle director aimed at improving the gain. The antenna is designed to operate at frequencies ranging from 3.1 to 10.6 GHz. Based on the modeling findings, the suggested antenna attain a bandwidth of 7.5 GHz with operating frequencies from 3.1 GHz to 10.6 GHz for a VSWR of less than two. In comparison to a typical single slot antenna, the suggested antenna provides a substantial boost in gain performance. The increase in gain is proportional to the frequency of operation. The constructed antenna has a lower bandwidth than the simulated one, with operating frequencies of 3.5 GHz – 3.75 GHz and 4.25 – 10.89 GHz, respectively, and useable bandwidths of 250 MHz and 6.64 GHz. All these results suggest that the antenna is suitable for microwave imaging applications.

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A coplanar vivaldi antenna design with improved frequency response for microwave breast imaging

Cited by 5 publications

References 9 publications

Design and Analysis of a Low-profile Tapered Slot UWB Vivaldi Antenna for Breast Cancer Diagnosis

Design and Analysis of a Low-profile Tapered Slot UWB Vivaldi Antenna for Breast Cancer Diagnosis

Coordinate transformation aided finite element method for contour detection of breast tumors in microwave imaging

Gain Enhancement of Double-Slot Vivaldi Antenna using Corrugated Edges and Semicircle Director for Microwave Imaging Application

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