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Electronics, Volume 9, Issue 9

September 2020 - 223 articles

Cover Story: A low-cost high-efficiency ultra-wideband (UWB) cavity-backed spiral antenna is proposed. It employs an equiangular spiral enclosed by an Archimedean spiral and it is fed through a tapered microstrip balun. A center-raised cylindrical absorber-free cavity backs the spiral to minimize the backward radiation without decreasing the efficiency. The cavity is designed to ensure an impedance bandwidth exceeding 16:1 ratio (from 350 MHz to 5.5 GHz). Simulated and measured results are presented and compared, demonstrating competitive performance in terms of impedance bandwidth and efficiency. Time–domain measurements indicate fidelity of 0.62 at boresight. View this paper.
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Articles (223)

  • Feature Paper
  • Article
  • Open Access
1 Citations
3,177 Views
14 Pages

22 September 2020

We propose an improved RLizard implementation method that enables the RLizard key encapsulation mechanism (KEM) to run in a resource-constrained Internet of Things (IoT) environment with an 8-bit micro controller unit (MCU) and 8–16 KB of SRAM....

  • Article
  • Open Access
45 Citations
15,515 Views
19 Pages

22 September 2020

To help address the global growing demand for food and fiber, selective breeding programs aim to cultivate crops with higher yields and more resistance to stress. Measuring phenotypic traits needed for breeding programs is usually done manually and i...

  • Article
  • Open Access
5 Citations
3,585 Views
11 Pages

22 September 2020

Air pollution is one of the big concerns for smart cities. The problem of applying big data analytics to sampling bias in the context of urban air quality is studied in this paper. A nonparametric estimator that incorporates kernel density estimation...

  • Article
  • Open Access
2 Citations
2,822 Views
20 Pages

Digital System Performance Enhancement of a Tent Map-Based ADC for Monitoring Photovoltaic Systems

  • Philippa Hazell,
  • Peter Mather,
  • Andrew Longstaff and
  • Simon Fletcher

22 September 2020

Efficient photovoltaic installations require control systems that detect small signal variations over large measurement ranges. High measurement accuracy requires data acquisition systems with high-resolution analogue-to-digital converters; however,...

  • Article
  • Open Access
1 Citations
3,192 Views
18 Pages

22 September 2020

The human gait pattern is an emerging biometric trait for user identification of smart devices. However, one of the challenges in this biometric domain is the gait pattern change caused by footwear, especially if the users are wearing high heels (HH)...

  • Article
  • Open Access
4 Citations
6,486 Views
11 Pages

22 September 2020

Recently, fashion industries have introduced artificial intelligence to provide new services, and research to combine fashion design and artificial intelligence has been continuously conducted. Among them, generative adversarial networks that synthes...

  • Article
  • Open Access
11 Citations
4,450 Views
30 Pages

A Modified Topology of a High Efficiency Bidirectional Type DC–DC Converter by Synchronous Rectification

  • Somalinga S Sethuraman,
  • KR. Santha,
  • Lucian Mihet-Popa and
  • C. Bharatiraja

22 September 2020

A modified Topology to acquire high efficiency of a bidirectional method of DC–DC converter of non-isolated approach is proposed. The modified circuit involves four numbers of switches with their body diodes, passive elements as two inductors a...

  • Article
  • Open Access
74 Citations
6,538 Views
24 Pages

State of Charge Estimation in Lithium-Ion Batteries: A Neural Network Optimization Approach

  • M. S. Hossain Lipu,
  • M. A. Hannan,
  • Aini Hussain,
  • Afida Ayob,
  • Mohamad H. M. Saad and
  • Kashem M. Muttaqi

22 September 2020

The development of an accurate and robust state-of-charge (SOC) estimation is crucial for the battery lifetime, efficiency, charge control, and safe driving of electric vehicles (EV). This paper proposes an enhanced data-driven method based on a time...

  • Article
  • Open Access
146 Citations
15,816 Views
16 Pages

Defect Detection in Printed Circuit Boards Using You-Only-Look-Once Convolutional Neural Networks

  • Venkat Anil Adibhatla,
  • Huan-Chuang Chih,
  • Chi-Chang Hsu,
  • Joseph Cheng,
  • Maysam F. Abbod and
  • Jiann-Shing Shieh

22 September 2020

In this study, a deep learning algorithm based on the you-only-look-once (YOLO) approach is proposed for the quality inspection of printed circuit boards (PCBs). The high accuracy and efficiency of deep learning algorithms has resulted in their incre...

  • Article
  • Open Access
11 Citations
4,167 Views
16 Pages

Designing a CHAM Block Cipher on Low-End Microcontrollers for Internet of Things

  • Hyeokdong Kwon,
  • SangWoo An,
  • YoungBeom Kim,
  • Hyunji Kim,
  • Seung Ju Choi,
  • Kyoungbae Jang,
  • Jaehoon Park,
  • Hyunjun Kim,
  • Seog Chung Seo and
  • Hwajeong Seo

22 September 2020

As the technology of Internet of Things (IoT) evolves, abundant data is generated from sensor nodes and exchanged between them. For this reason, efficient encryption is required to keep data in secret. Since low-end IoT devices have limited computati...

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Electronics - ISSN 2079-9292