scholarly journals Touch-Based Dual-Band System Combined Human Body Communication and Wireless LAN for Wearable Devices

Electronics ◽  
2019 ◽  
Vol 8 (3) ◽  
pp. 335
Author(s):  
Kunho Park ◽  
Jong Baek ◽  
Se Kim ◽  
Min Jeong ◽  
Youn Kim
Keyword(s):  
Human Body ◽  
High Speed ◽  
Local Area Network ◽  
Band System ◽  
Transparent Electrode ◽  
Wearable Devices ◽  
Physical Contact ◽  
Dual Band ◽  
Area Network ◽  
Human Body Communication

A touch-based dual-band system (TBDB), in which human body communication (HBC) and wireless local area network (WLAN) are combined to provide an intuitive service, is proposed. The proposed system can connect the network between devices using HBC, and the data is transmitted via WLAN. The network setup is configured within 100 ms through HBC by simply touching the devices to be connected. Subsequently, data is transmitted at high-speed through the WLAN at a data rate of 54 Mbps. Security is advantageous as HBC technology transmits data through physical contact. The TBDB system can provide a system suitable for wearable devices by combining the advantages of HBC with intuitive service and WLAN at a high transfer rate. A transparent electrode that is adaptable to various display panels is used instead of a metal electrode. The proposed TBDB system using the transparent electrode demonstrates a reliable and intuitive video streaming service between a server and a client, simply by touching the devices. The proposed system can be used between most electronic devices, such as smartphones, tablet PCs, and TVs, owing to the intuitive network connection by touch.

Analysis of electromagnetic absorption in new design of PIFA antenna using metamaterials

2021 ◽  
Author(s):  
Hamza Ben Hamadi ◽  
said ghnimi ◽  
Lassaad Latrach ◽  
Philippe Benech ◽  
Ali Gharsallah
Keyword(s):  
Human Body ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Local Area ◽  
Dual Band ◽  
Area Network ◽  
Dual Band Antenna ◽  
Cubic Model ◽  
The Impact ◽  
Pifa Antenna

Abstract This paper presents the design, simulation and fabrication of a miniaturized wearable dual-band antenna on a semi-flex substrate; she is operable at 2.45/5.8 GHz for wireless local area network applications. The electrical and radiation characteristics of this proposed antenna were obtained by means of a technical of insertion of a slot to tune the operating frequencies. To study the impact of the electromagnetic radiation of the structure of the human body, it is necessary to minimize the back radiation towards the user. Therefore, in this work, a multi-band artificial magnetic conductor (AMC) was placed directly above a dual-band planar inverted F antenna to achieve a miniaturization with excellent radiation performance. The simulation results were designed and simulated using Studio commercial software (CST). A good agreement was achieved between the results of simulation and the experimental. The Comparison of measurement results indicates that the gain improved from 1,84 dB to 3,8 dB, in the lower band, and from 2,4 dB to 4,1 in the upper band, when the antenna is backed by the AMC plane. The front-to-back ratio of the AMC backed PIFA antenna was also enhanced. Then, to ensure that the proposed AMC is harmless to the human body, this prototype was placed on three-layer human tissue cubic model. It was observed that the through inclusion of plane AMC, the peak specific absorption rate (SAR) decreased to 1,45 and 1,1 W/kg at 2,45 and 5.8 GHz, respectively (a reduction of around 3,7 W/kg, compared with an antenna without (AMC).

scholarly journals Design and Realization of a Frequency Reconfigurable Antenna with Wide, Dual, and Single-Band Operations for Compact Sized Wireless Applications

Electronics ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 1321
Author(s):  
Wahaj Abbas Awan ◽  
Syeda Iffat Naqvi ◽  
Wael Abd Ellatif Ali ◽  
Niamat Hussain ◽  
Amjad Iqbal ◽  
...  
Keyword(s):  
Wireless Local Area Network ◽  
Local Area Network ◽  
Single Band ◽  
Dual Band ◽  
Operating Frequency ◽  
Reconfigurable Antenna ◽  
Area Network ◽  
Wireless Applications ◽  
Operating Modes ◽  
Compact Size

This paper presents a compact and simple reconfigurable antenna with wide-band, dual-band, and single-band operating modes. Initially, a co-planar waveguide-fed triangular monopole antenna is obtained with a wide operational frequency band ranging from 4.0 GHz to 7.8 GHz. Then, two additional stubs are connected to the triangular monopole through two p-i-n diodes. By electrically switching these p-i-n diodes ON and OFF, different operating frequency bands can be attained. When turning ON only one diode, the antenna offers dual-band operations of 3.3–4.2 GHz and 5.8–7.2 GHz. Meanwhile, the antenna with single-band operation from 3.3 GHz to 4.2 GHz can be realized when both of the p-i-n diodes are switched to ON states. The proposed compact size antenna with dimensions of 0.27λ0 × 0.16λ0 × 0.017λ0 at the lower operating frequency (3.3 GHz) can be used for several wireless applications such as worldwide interoperability for microwave access (WiMAX), wireless access in the vehicular environment (WAVE), and wireless local area network (WLAN). A comparative analysis with state-of-the-art works exhibits that the presented design possesses advantages of compact size and multiple operating modes.

A Distributed Image Processing Architecture Based On A High-Speed Local Area Network

1986 ◽  
Author(s):  
Thomas Alexander ◽  
James B. Fahy ◽  
Yongmin Kim
Keyword(s):  
Image Processing ◽  
High Speed ◽  
Local Area Network ◽  
Local Area ◽  
Area Network ◽  
Processing Architecture

Design of novel dual-band microstrip antenna for wireless local area network applications

2011 ◽  
Vol 23 (3) ◽  
pp. 717-720
Author(s):  
李伟 Li Wei ◽  
耿友林 Geng Youlin
Keyword(s):  
Microstrip Antenna ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Local Area ◽  
Dual Band ◽  
Area Network ◽  
Network Applications
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