Amplifiers in Biomedical Engineering: A Review from Application Perspectives

Abstract

Continuous monitoring and treatment of various diseases with biomedical technologies and wearable electronics has become significantly important. The healthcare area is an important, evolving field that, among other things, requires electronic and micro-electromechanical technologies. Designed circuits and smart devices can lead to reduced hospitalization time and hospitals equipped with high-quality equipment. Some of these devices can also be implanted inside the body. Recently, various implanted electronic devices for monitoring and diagnosing diseases have been presented. These instruments require communication links through wireless technologies. In the transmitters of these devices, power amplifiers are the most important components and their performance plays important roles. This paper is devoted to collecting and providing a comprehensive review on the various designed implanted amplifiers for advanced biomedical applications. The reported amplifiers vary with respect to the class/type of amplifier, implemented CMOS technology, frequency band, output power, and the overall efficiency of the designs. The purpose of the authors is to provide a general view of the available solutions, and any researcher can obtain suitable circuit designs that can be selected for their problem by reading this survey.

A Literature Survey with the Focus on Magnetically Coupled Wireless Power Transfer Systems Developed for Engineering and Biomedical Applications

“…The use of resonant magnetically coupled wireless power (WPT) systems is developing day by day to power various applications as diverse as radio frequency identification (RFID) tags, consumer electronics, healthcare, electric vehicle charging [1][2][3][4]. Inductive WPT technology is able to provide a low power level without depending on the physical connections making it interesting not only for engineering but also for implanted biomedical applications [5][6][7][8][9].…”