Wearable Reconfigurable Antenna

2021 ◽  
pp. 23-44
Author(s):  
Reji V ◽  
C. T. Manimegalai
Keyword(s):  
Energy Harvesting ◽  
Mode Frequency ◽  
Monitoring Systems ◽  
Reconfigurable Antenna ◽  
Printed Antennas ◽  
Wearable Antenna ◽  
Wearable Antennas ◽  
Military Applications ◽  
Patient Monitoring Systems ◽  
Wireless Application

Printed antennas are designed for various applications in recent years. The latest development of antennas are wearable antennas; these wearable antennas are playing a major role in the energy harvesting mechanisms, patient monitoring systems, and military applications. In this chapter a reconfigurable wearable antenna is proposed. Reconfigurable wearable antennas are able to operate in both modes on body and off body. These antennas are reconfigured from one frequency to another frequency depending upon the requirement. Three types of reconfigurable antenna modes are designed and analyzed in the chapter. Frequency reconfiguration with off body mode and on body mode, frequency reconfiguration between inside receiver and outside interrogator, and frequency reconfiguration with different substrate conditions. The choice of frequency bands are WBAN and other wireless application bands. Different switches are used to control the frequencies.

Modeling of Strain Energy Harvesting in Pneumatic Tires Using Piezoelectric Transducer

2014 ◽  
Vol 42 (1) ◽  
pp. 16-34 ◽  
Author(s):  
Ali E. Kubba ◽  
Mohammad Behroozi ◽  
Oluremi A. Olatunbosun ◽  
Carl Anthony ◽  
Kyle Jiang
Keyword(s):  
Energy Harvesting ◽  
Strain Energy ◽  
Fiber Composite ◽  
Experimental Tests ◽  
Evaluation Study ◽  
Monitoring Systems ◽  
Monitoring Device ◽  
Optimum Location ◽  
Piezoelectric Fiber Composite ◽  
Piezoelectric Fiber

ABSTRACT This paper presents an evaluation study of the feasibility of harvesting energy from rolling tire deformation and using it to supply a tire monitoring device installed within the tire cavity. The developed technique is simulated by using a flexible piezoelectric fiber composite transducer (PFC) adhered onto the tire inner liner acting as the energy harvesting element for tire monitoring systems. The PFC element generates electric charge when strain is applied to it. Tire cyclic deformation, particularly at the contact patch surface due to rolling conditions, can be exploited to harvest energy. Finite element simulations, using Abaqus package, were employed to estimate the available strain energy within the tire structure in order to select the optimum location for the PFC element. Experimental tests were carried out by using an evaluation kit for the energy harvesting element installed within the tire cavity to examine the PFC performance under controlled speed and loading conditions.

scholarly journals New Compact Wearable Metamaterials Circular Patch Antennas for IoT, Medical and 5G Applications

2020 ◽  
Vol 3 (4) ◽  
pp. 42
Author(s):  
Albert Sabban
Keyword(s):  
Communication Systems ◽  
Dynamic Range ◽  
Low Cost ◽  
Patch Antennas ◽  
Antenna Feed ◽  
Circular Patch ◽  
Wearable Antenna ◽  
Wearable Antennas ◽  
Feed Network ◽  
Line Design

The development of compact passive and active wearable circular patch metamaterials antennas for communication, Internet of Things (IoT) and biomedical systems is presented in this paper. Development of compact efficient low-cost wearable antennas are one of the most significant challenges in development of wearable communication, IoT and medical systems. Moreover, the advantage of an integrated compact low-cost feed network is attained by integrating the antenna feed network with the antennas on the same printed board. The efficiency of communication systems may be increased by using efficient passive and active antennas. The system dynamic range may be improved by connecting amplifiers to the printed antenna feed line. Design, design considerations, computed and measured results of wearable circular patch meta-materials antennas with high efficiency for 5G, IoT and biomedical applications are presented in this paper. The circular patch antennas electrical parameters on the human body were analyzed by using commercial full-wave software. The circular patch metamaterial wearable antennas are compact and flexible. The directivity and gain of the antennas with Circular Split-Ring Resonators (CSRR) is higher by 2.5dB to 3dB than the antennas without CSRR. The resonant frequency of the antennas without CSRR is higher by 6% to 9% than the antennas with CSRR. The computed and measured bandwidth of the stacked circular patch wearable antenna with CSRR for IoT and medical applications is around 12%, for S11 lover than −6dB. The gain of the circular patch wearable antenna with CSRR is around 8dBi.

scholarly journals Utilization of Software Product Lines for Generation of Patient Monitoring Systems and Sending Alerts

2013 ◽  
Vol 9 ◽  
pp. 1245-1251
Author(s):  
Bruno Gomes de Araújo ◽  
Philippi Sedir Grilo de Morais ◽  
Jailton Carlos de Paiva ◽  
Ricardo Alexsandro de Medeiros Valentim ◽  
José Diniz Júnior ◽  
...  
Keyword(s):  
Patient Monitoring ◽  
Software Product Lines ◽  
Monitoring Systems ◽  
Product Lines ◽  
Software Product ◽  
Patient Monitoring Systems

A Dual-Band Flexible Wearable Antenna Integrated on a Smart Watch for 5G Applications

2020 ◽  
pp. 77-101
Author(s):  
Mohamed Ismail Ahmed ◽  
Mai Fouad Ahmed
Keyword(s):  
Dielectric Properties ◽  
Textile Material ◽  
Dual Band ◽  
60 Ghz ◽  
Specific Absorption ◽  
Absorption Ratio ◽  
Wearable Antenna ◽  
Wearable Antennas ◽  
Flexible Material ◽  
Smart Watch

This chapter focuses on the design of dual band flexible wearable antennas for modern 5G applications to integrate on a smartwatch. The first is a rectangular antenna which the patch and the ground etched on new flexible material is called ULTRALAM® 3850HT. This antenna is designed to operate at 38 GHz and 60 GHz. The second is a planar inverted-2F wearable antenna pasted on a jeans textile material. Two methods for measuring the dielectric properties of the jeans will be presented. This antenna is designed to operate at 28 GHz and 38 GHz. The SAR (specific absorption ratio) is also introduced and SAR results will be shown. Moreover, the proposed smartwatch under the bent condition will be also studied. These antennas are simulated using HFSS and CST 2018.

Use of Telemedicine Systems and Devices for Patient Monitoring

2011 ◽  
pp. 221-227
Author(s):  
Dionisia Damigou ◽  
Fotini Kalogirou ◽  
Georgios Zarras
Keyword(s):  
Information Technology ◽  
Health Service ◽  
Patient Monitoring ◽  
Monitoring Systems ◽  
Health Providers ◽  
High Quality ◽  
The Public ◽  
Patient Monitoring Systems ◽  
The Individual ◽  
Remote Patient

Today’s health standards demand a high quality and efficiency as a major characteristic of every health service provided to the public, even in cases where patients have to be treated from a distance. The combination of medicine and information technology (telecommunications) led to the introduction of the term telemedicine. Telemedicine services are used in assisting remote patients. Interaction and feedback through patient monitoring systems and devices allow the health providers interfere when necessary, so medical maintenance can be guaranteed. This chapter deals with the different kinds of such systems and devices. The contribution of old and new telecommunication technologies is currently being discussed. The individual needs of every remote patient are taken into account, thus, several devices and systems are used for telemonitoring. This chapter indicates characteristics and features of the various kinds of patient monitoring systems and devices.

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