Design and Optimization of a Slotted Monopole Antenna for Ultra-Wide Band Body Centric Imaging Applications

Danjuma, Isah Musa; Akinsolu, Mobayode O.; See, Chan Hwang; Abd‐Alhameed, Raed A.; Liu, Bo

doi:10.1109/jerm.2020.2984910

Cited by 45 publications

(24 citation statements)

References 27 publications

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“…The printed monopole antennas, already presented for breast imaging, are relatively larger than our via-fed antenna [26,27] or, with a similar size to our antenna, have less bandwidth or pulse preserving capability [10,16]. [27] presents a large size CPW monopole antenna for UWB bodycentric imaging applications. However, [27] does not evaluate any of the time-or frequency-domain distortion analyses.…”

Section: Introductionmentioning

confidence: 92%

“…The large axial lengths of these antennas increase the overall size of the imaging system in practical scenarios [25]. Recently, planar printed monopole antennas have been considered for breast cancer screening systems [10,16,[25][26][27] because of their merits such as simple and low-cost structure, low profile, wide impedance bandwidth, and ease of fabrication. Additionally, designing a low profile and small-size antenna would also enable a higher number of antenna elements around the tissue; thus, more received signals can be exploited, and resolution would be enhanced [10].…”

Section: Introductionmentioning

confidence: 99%

“…[27] presents a large size CPW monopole antenna for UWB bodycentric imaging applications. However, [27] does not evaluate any of the time-or frequency-domain distortion analyses. Additionally, the return loss performance of the CPW monopole antenna is evaluated in the proximity of a non-dispersive, flat-layered arm model.…”

Section: Introductionmentioning

confidence: 99%

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Dual-Functional Ultrawideband Antenna With High Fidelity Factor for Body Area Networks and Microwave Imaging Systems

2021

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Microwave Imaging (MI) and Body Area Networks (BANs) technologies are widely used in healthcare systems. A dual-functional compact ultrawideband (UWB) antenna with a high on-body and offbody fidelity factor is presented in this paper. The antenna's design approach is based on analyzing the return loss, the antenna's gain, the phase of S21, and the group delay over the UWB frequency band, in each designing step, to achieve the highest level of fidelity factor in both E-and H-plane. The final design (Ant.3) consists of a circular ring with six intersecting rings in the radiating element and an elliptic ground plane with an overall size of 16x20 2 mm . Simulated and experimental evaluations both in free space and onbody prove the excellent operation of Ant. 3 within the FCC UWB bandwidth of 3.1 to 10.6 GHz in terms of return loss and fidelity factor (greater than 0.9 at all angles). For body area communication, the final design presents the fidelity factor greater than 0.93 near the human arm. Also, for breast cancer detection applicability, a 12-element array of Ant. 3 is located around a conical breast model. The results show the antenna's promising performance in detecting 6-mm average diameter malignant tumor and 3-mm average diameter benign tumor.INDEX TERMS Fidelity factor, microwave imaging, pulse preserving capabilities, ultrawideband (UWB), breast cancer detection, body area network (BANs).

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Section: Introductionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

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Dual-Functional Ultrawideband Antenna With High Fidelity Factor for Body Area Networks and Microwave Imaging Systems

2021

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“…The search ranges of the design variables are large, covering all possibilities. The three key elements of SADEA include Gaussian process machine learning for surrogate modeling [38], differential evolution for evolutionary optimization [39] and the surrogate model-aware evolutionary search framework [40,41] to make surrogate modeling and evolutionary optimization The simulation results that have been presented illustrate the complexity of optimizing the proposed antenna structure. As mentioned above, standard global optimization techniques may cost a very long time (estimated 1.5 months for this particular case).…”

Section: Multi-fidelity Surrogate Model Assisted Differential Evolutimentioning

confidence: 99%

“…The search ranges of the design variables are large, covering all possibilities. The three key elements of SADEA include Gaussian process machine learning for surrogate modeling [38], differential evolution for evolutionary optimization [39] and the surrogate model-aware evolutionary search framework [40,41] to make surrogate modeling and evolutionary optimization work harmoniously for antenna design landscapes. The method uses a computationally cheap Gaussian process surrogate model to approximate the computationally expensive EM simulation model in order to reduce the number of necessary EM simulations in the optimization process.…”

Section: Multi-fidelity Surrogate Model Assisted Differential Evolutimentioning

confidence: 99%

Compact Wideband MIMO Diversity Antenna for Mobile Applications Using Multi-Layered Structure

et al. 2020

Self Cite

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A closely packed wideband multiple-input multiple-output (MIMO)/diversity antenna (of two ports) with a small size of less than 18.5 mm by 18.5 mm is proposed for mobile communication applications. The antenna can be orthogonally configured for corner installation or by placing it on a back-to-back structure for compact modules. To enhance the isolation and widen the bandwidth, the antenna is structured with multiple layers having differing dielectric constants. The feeding through a via significantly reduces the ground waves. A multi-fidelity surrogate model-assisted design exploration method is employed to obtain the optimized antenna geometric parameters efficiently. The antenna design was investigated using electromagnetic simulation and a physical realization of the optimal design was then created and subjected to a range of tests. The specific parameters investigated included reflection coefficients, mutual coupling between the input ports, radiation patterns, efficiency and parameters specific to MIMO behavior: envelope correlation coefficient and pattern diversity multiplexing coefficient. It was found that the antenna has an impedance bandwidth of approximately 4 GHz, mutual coupling between input ports of better than −18 dB and an envelope correlation coefficient of less than 0.002 across the operating band. This makes it a good candidate design for many mobile MIMO applications.

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A novel compact semicircular defected ground structure ultrawideband monopole antenna integrated with Ku band for breast cancer detection

Subrahmanyam,

Krishna

2023

Int J Communication

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SummaryA compact and novel ultrawideband (UWB) antenna integrated with Ku band for microwave imaging applications is reported. The reported antenna consists of a novel patch structure along with a tapered feed structure on top of FR‐4 substrate having a compact dimension of 16 × 22 mm2 and novel semicircular defected ground structure (SC‐DGS) etched below the substrate. The proposed antenna covers a wide impedance bandwidth of 15.07 GHz spanning from 3.51 to 18.58 GHz with a fractional bandwidth (FBW) of 136%. The intended antenna performance is analyzed for S11, peak gain, efficiency, and radiation patterns in frequency domain, and group delay, isolation (S21), and linear phase response in time domain. The simulated and measured results of reported antenna are well matched for the usage in practical portable UWB applications. More importantly, the proposed antenna system is simulated for the detection of breast cancer tissue by comparison of S21 results, current densities, and specific absorption rate with and without tumor conditions. These findings show that the radiator and the whole system work well in detecting the breast tumor.

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Design and Optimization of a Slotted Monopole Antenna for Ultra-Wide Band Body Centric Imaging Applications

Abstract: There may be differences between this version and the published version. You are advised to consult the publisher's version if you wish to cite from it.

Cited by 45 publications

References 27 publications

Dual-Functional Ultrawideband Antenna With High Fidelity Factor for Body Area Networks and Microwave Imaging Systems

Dual-Functional Ultrawideband Antenna With High Fidelity Factor for Body Area Networks and Microwave Imaging Systems

Compact Wideband MIMO Diversity Antenna for Mobile Applications Using Multi-Layered Structure

A novel compact semicircular defected ground structure ultrawideband monopole antenna integrated with Ku band for breast cancer detection

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