Class-E self-oscillation for the transmission of wireless power to implants

Laskovski, Anthony N.; Yuce, Mehmet Rasit

doi:10.1016/j.sna.2011.07.018

Cited by 12 publications

(7 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Powering the implantable active DDS such as micropumps and associated wiring are two main challenges which must be overcome before they can be used in vivo and subsequently in clinical applications. Wireless power transfer [72] is one option to consider though it is not easy because extra hardware must be brought in for energy generation and usage at the site.…”

Section: Implantable Drug Delivery Systemsmentioning

confidence: 99%

Towards soft robotic devices for site-specific drug delivery

Alici

2015

Expert Review of Medical Devices

View full text Add to dashboard Cite

Considerable research efforts have recently been dedicated to the establishment of various drug delivery systems (DDS) that are mechanical/physical, chemical and biological/molecular DDS. In this paper, we report on the recent advances in site-specific drug delivery (site-specific, controlled, targeted or smart drug delivery are terms used interchangeably in the literature, to mean to transport a drug or a therapeutic agent to a desired location within the body and release it as desired with negligibly small toxicity and side effect compared to classical drug administration means such as peroral, parenteral, transmucosal, topical and inhalation) based on mechanical/physical systems consisting of implantable and robotic drug delivery systems. While we specifically focus on the robotic or autonomous DDS, which can be reprogrammable and provide multiple doses of a drug at a required time and rate, we briefly cover the implanted DDS, which are well-developed relative to the robotic DDS, to highlight the design and performance requirements, and investigate issues associated with the robotic DDS. Critical research issues associated with both DDSs are presented to describe the research challenges ahead of us in order to establish soft robotic devices for clinical and biomedical applications. Towards soft robotic devices for site-specific drug delivery Abstract Considerable research efforts have recently been dedicated to the establishment of various drug delivery systems (DDS) which are mechanical / physical, chemical and biological/molecular DDS. In this paper, we report on recent advances in site-specific drug delivery 1 based on mechanical / physical systems consisting of implantable and robotic drug delivery systems. While we specifically focus on the robotic or autonomous DDS, which can be reprogrammable and provide multiple doses of a drug at a required time and rate, we briefly cover the implanted DDS, which are well-developed relative to the robotic DDS, to highlight the design and performance requirements, and investigate issues associated with the robotic DDS. Critical research issues associated with both DDSs are presented to describe the research challenges ahead of us in order to establish really soft robotic devices for clinical and biomedical applications.

show abstract

Section: Implantable Drug Delivery Systemsmentioning

confidence: 99%

Towards soft robotic devices for site-specific drug delivery

Alici

2015

Expert Review of Medical Devices

View full text Add to dashboard Cite

show abstract

“…2(a). Because the ratio is the current rate to transmit the output load from (11) to (13), it can be briefly expressed as 2 1 . When the difference between ESRs of those capacitors is neglected and the ESR is described as r CT , the power loss of the capacitors in the matching circuit can be expressed as…”

Section: Design and Loss Analysis Of The Amplifiermentioning

confidence: 99%

“…It is promising technology especially in the mobile devices such as cellular phones and tablets. Because the transmission efficiency of the WPT system is generally lower than that of wired power supply system and the transmitted power through the air is restricted by the government regulation, the transmitted power and transmission efficiency are important factors in the WPT system [1]. A class E power amplifier (PA) is the promising circuit topology of a power transmitter in the WPT system on the HF bands due to high output power and theoretical 100% drain efficiency with a simple design [2].…”

Section: Introductionmentioning

confidence: 99%

Class E Power Amplifiers using High-Q Inductors for Loosely Coupled Wireless Power Transfer System

Yang¹,

Kim²,

Park³

2014

Journal of Electrical Engineering and Technology

View full text Add to dashboard Cite

-A highly efficient class E power amplifier is demonstrated for application to wireless power transfer system. The amplifier is designed with an L-type matching at the output for harmonic rejection and output matching. The power loss and the effect of each component in the amplifier with the matching circuit are analyzed with the current ratio transmitted to the output load. Inductors with a quality factor of more than 120 are used in a dc feed and the matching circuit to improve transmission efficiency. The single-ended amplifier with 20 V supply voltage shows 7.7 W output power and 90.8% power added efficiency at 6.78 MHz. The wireless power transfer (WPT) system with the amplifier shows 5.4 W transmitted power and 82.3% overall efficiency. The analysis and measurements show that high-Q inductors are required for the amplifier design to realize highly efficient WPT system.

show abstract

“…A relay circuit between a transmitting circuit and a receiving circuit is proposed to improve efficiency of WPT [5]. An oscillation circuit is utilized as a transmitting circuit for a transmission with a DC power supply targeted to implants [6].…”

Section: Introductionmentioning

confidence: 99%

A General Method to Parameter Optimization for Highly Efficient Wireless Power Transfer

Yamaguchi¹,

Hirata²,

Hodaka³

2016

IJECE

View full text Add to dashboard Cite

This paper proposes a new and general method to optimize a working frequency and a load resistance in order to realize highly efficient wireless power transfer. It should be noticed that neither resonant frequency nor matched impedance maximizes efficiency of wireless power transfer circuit, in general. This paper establishes a mathematical model of a commonly used wireless power transfer circuit, and derives a mathematical expression of circuit efficiency which involves a working frequency, a load resistance and the other parameters as symbols. This enables us to find the optimal working frequency and load resistance. The result of this paper is compared with results by a method based on resonance and impedance matching, and then clarified by a numerical example.

show abstract

Class-E self-oscillation for the transmission of wireless power to implants

Cited by 12 publications

References 13 publications

Towards soft robotic devices for site-specific drug delivery

Towards soft robotic devices for site-specific drug delivery

Class E Power Amplifiers using High-Q Inductors for Loosely Coupled Wireless Power Transfer System

A General Method to Parameter Optimization for Highly Efficient Wireless Power Transfer

Contact Info

Product

Resources

About