Abstract

In this work, a dual-band printed planar antenna, operating at two ultra-high frequency bands (2.5 GHz/4.5 GHz), is proposed for wireless power transfer for wearable applications. The receiving antenna is printed on a Kapton polyimide-based flexible substrate, and the transmitting antenna is on FR-4 substrate. The receiver antenna occupies 2.1 area. Antennas were simulated using ANSYS HFSS software and the simulation results are compared with the measurement results.

Highlights

  • Wearable devices have been of interest due to an increase in their applications, such as the Internet of Things (IoT), biomedical sensors, and body area network

  • A reliable and suitable power source is required, especially a method of power transfer that does not rely on batteries or wired power sources

  • A wireless power transfer (WPT) system requires a transmitting unit connected to the main source of power and the transform the electrical power into an electromagnetic field

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Summary

Introduction

Wearable devices have been of interest due to an increase in their applications, such as the Internet of Things (IoT), biomedical sensors, and body area network. For these particular applications, a reliable and suitable power source is required, especially a method of power transfer that does not rely on batteries or wired power sources. Wireless power transfer (WPT) has been of interest for recharging wearable devices. WPT technology is used for energy transfer in wireless sensor networks (WSNs). In these applications, WSN is limited by the battery lifetime [2]. In [6], the authors designed a wireless power transfer system for a wearable and wireless neurotransmitter sensor recording system

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