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Electronics, Volume 7, Issue 2

2018 February - 16 articles

Cover Story: The passive repeater consists of two back-to-back arrays, each of which have 16 square microstrip antennas with tunable reactance devices (varactor diodes). This repeater captures and retransmits the signals bidirectionally because no directional component is used. Even though no amplifier is used, the channel gain between the transmitter and receiver can be enhanced by controlling the varactor diodes because the antenna directivity is semi-arbitrarily changed. Furthermore, this repeater can deal with the multiple streams, such as MIMO signals, since multiple antennas can simultaneously repeat the multiple signals. View this paper
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Articles (16)

  • Article
  • Open Access
22 Citations
7,737 Views
9 Pages

A Compact In-Line Waveguide-to-Microstrip Transition in the Q-Band for Radio Astronomy Applications

  • Marco Simone,
  • Alessandro Fanti,
  • Giuseppe Valente,
  • Giorgio Montisci,
  • Riccardo Ghiani and
  • Giuseppe Mazzarella

A microstrip-to-waveguide transition has been realized for radio astronomy applications, designed to operate in the Q-band (33–50 GHz). As part of an array radio frequency (RF) receiver, the main requirement of such a transition is the reduction of t...

  • Article
  • Open Access
14 Citations
10,488 Views
7 Pages

Design of a Low-Cost Microstrip Directional Coupler with High Coupling for a Motion Detection Sensor

  • Giovanni Sanna,
  • Giorgio Montisci,
  • Zushen Jin,
  • Alessandro Fanti and
  • Giovanni Andrea Casula

A coupled-line coupler based on the asymmetric cascade connection of two coupled line sections is used to achieve a high coupling factor using low-cost material and technology in the X frequency band, and its performance is compared with a standard q...

  • Article
  • Open Access
16 Citations
7,083 Views
17 Pages

A biometric recognition system is one of the leading candidates for the current and the next generation of smart visual systems. The visual system is the engine of the surveillance cameras that have great importance for intelligence and security purp...

  • Article
  • Open Access
29 Citations
9,752 Views
13 Pages

A 3D Printing Model Watermarking Algorithm Based on 3D Slicing and Feature Points

  • Giao N. Pham,
  • Suk-Hwan Lee,
  • Oh-Heum Kwon and
  • Ki-Ryong Kwon

With the increase of three-dimensional (3D) printing applications in many areas of life, a large amount of 3D printing data is copied, shared, and used several times without any permission from the original providers. Therefore, copyright protection...

  • Review
  • Open Access
89 Citations
16,502 Views
20 Pages

Multi-Agent Cooperative Control Consensus: A Comparative Review

  • Muhammad Majid Gulzar,
  • Syed Tahir Hussain Rizvi,
  • Muhammad Yaqoob Javed,
  • Umer Munir and
  • Haleema Asif

Cooperative control consensus is one of the most actively studied topics within the realm of multi-agent systems. It generally aims to drive multi-agent systems to achieve a common group objective. The core aim of this paper is to promote research in...

  • Feature Paper
  • Article
  • Open Access
4 Citations
5,343 Views
18 Pages

This paper describes the development and the realization of an adaptive antenna based on a reconfigurable parasitic structure. The geometry of the proposed antenna is circular, and it is composed by an active omni-directional radiator, surrounded by...

  • Article
  • Open Access
24 Citations
6,748 Views
11 Pages

Location information is crucial in various location-based applications, the nodes in location system are often deployed in the 3D scenario in particle, so that localization algorithms in a three-dimensional space are necessary. The existing RFID thre...

  • Article
  • Open Access
60 Citations
11,468 Views
17 Pages

Neural Network Based Maximum Power Point Tracking Control with Quadratic Boost Converter for PMSG—Wind Energy Conversion System

  • Ramji Tiwari,
  • Kumar Krishnamurthy,
  • Ramesh Babu Neelakandan,
  • Sanjeevikumar Padmanaban and
  • Patrick William Wheeler

This paper proposes an artificial neural network (ANN) based maximum power point tracking (MPPT) control strategy for wind energy conversion system (WECS) implemented with a DC/DC converter. The proposed topology utilizes a radial basis function netw...

  • Review
  • Open Access
86 Citations
20,261 Views
37 Pages

Digital Control Techniques Based on Voltage Source Inverters in Renewable Energy Applications: A Review

  • Sohaib Tahir,
  • Jie Wang,
  • Mazhar Hussain Baloch and
  • Ghulam Sarwar Kaloi

In the modern era, distributed generation is considered as an alternative source for power generation. Especially, need of the time is to provide the three-phase loads with smooth sinusoidal voltages having fixed frequency and amplitude. A common sol...

  • Article
  • Open Access
42 Citations
8,294 Views
11 Pages

In the fault diagnosis system using empirical mode decomposition (EMD), it is important to select the intrinsic mode functions (IMFs) which contain as much fault information as possible and to alleviate the problems of mode mixing and spurious modes....

  • Article
  • Open Access
4 Citations
5,452 Views
12 Pages

Device-to-device (D2D) pairs are allowed to reuse the spectrum of cellular users who are in a good quality channel state with underlaying cellular network. However, cellular users usually suffer a poor performance in term of achievable rate when they...

  • Article
  • Open Access
59 Citations
7,180 Views
9 Pages

Graphene Ink Film Based Electrochemical Detector for Paracetamol Analysis

  • Li Fu,
  • Kefeng Xie,
  • Yuhong Zheng,
  • Luxi Zhang and
  • Weitao Su

Graphene ink is a commercialized product in the graphene industry with promising potential application in electronic device design. However, the limitation of the graphene ink is its low electronic performance due to the ink preparation protocol. In...

  • Article
  • Open Access
34 Citations
7,747 Views
19 Pages

Extended Kalman Filter Based Sliding Mode Control of Parallel-Connected Two Five-Phase PMSM Drive System

  • Tounsi Kamel,
  • Djahbar Abdelkader,
  • Barkat Said,
  • Sanjeevikumar Padmanaban and
  • Atif Iqbal

This paper presents sliding mode control of sensor-less parallel-connected two five-phase permanent magnet synchronous machines (PMSMs) fed by a single five-leg inverter. For both machines, the rotor speeds and rotor positions as well as load torques...

  • Article
  • Open Access
2 Citations
6,094 Views
11 Pages

This paper presents a novel passive repeater that achieves enhanced Multiple-Input-Multiple-Output (MIMO) communication between two isolated terminals. The novel aspect of this work is an avoidance of the key-hole effect, which is normally caused by...

  • Article
  • Open Access
19 Citations
9,944 Views
14 Pages

Axial flux machines have positive sides on the power and torque density profile. However, the price of this profile is paid by the torque ripples and irregular magnetic flux density production. To gather higher efficiency, torque ripples should close...

  • Article
  • Open Access
21 Citations
6,683 Views
16 Pages

In this paper, we propose a low-complexity peak-to-average power ratio (PAPR) reduction scheme that combines both multi-band (MB)-Hadamard precoding and clipping for the optical orthogonal frequency division multiplexing (OFDM) systems. Approximation...

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Electronics - ISSN 2079-9292