InformaApp - Publikationen

DOI: 10.5604/01.3001.0012.0821

Nonlinear Analysis of High Q Radio Frequency Energy Harvesting Networks

Informatics, Control, Measurement in Economy and Environment Protection, vol. 8, no. 2, pp. 83-86

2018

Digital Nachhaltig Elektrotechnik und Medientechnik

The paper focuses on nonlinear analysis of high and low Q RF energy harvesting circuits. The analysis is made mathematically and by large signal simulation via Keysight Advanced Design System. The mathematical analysis of the nonlinear harvesting circuits is done by using the Galerkin method and the simulations are performed using the harmonic balance method, which is a special version of the Galerkin method.

Vortrag

Digital Nachhaltig Elektrotechnik und Medientechnik

Nonlinear Large Signal Analysis of High Q RF Energy Harvesting Circuits

22nd International Conference on Applied Electronics (AE 2017) [Sep 5-7, 2017; University of West Bohemia, Pilsen, Czech Republic], Pilsen, Tschechische Republik

2017

Vortrag

Digital Nachhaltig Elektrotechnik und Medientechnik

Efficiency Enhancement of High Q Energy Harvesting Networks

Wireless Power Congress (WPC) 2017, München

2017

Beitrag (Sammelband oder Tagungsband)

Efficiency Enhancement of High Q Energy Harvesting Networks

Proceedings of Wireless Power Congress 2017 (12-12 July, 2017; Munich, Germany)

2017

Beitrag (Sammelband oder Tagungsband)

Nonlinear Large Signal Analysis of High Q RF Energy Harvesting Circuits

Proceedings of the 22nd International Conference on Applied Electronics (AE 2017) [Sep 5-7, 2017; University of West Bohemia, Pilsen, Czech Republic]

2017

Beitrag (Sammelband oder Tagungsband)

Nonlinear Analysis of High Q Radio Frequency Energy Harvesting Networks

Proceedings of the XIX International Symposium on Theoretical Electrical Engineering (ISTET) [July 16-19, 2017; TU Ilmenau]

2017

Zeitschriftenartikel

Christian Merz

Harvesting aus HF

Elektronik wireless - Fachmedium für Entwicklungen funkbasierter Systeme, no. Oktober, pp. 36-39

2016

Beitrag (Sammelband oder Tagungsband)

High Q Impedance Matching for RF Energy Harvesting Applications

Proceedings of the 2016 IEEE 3rd International Symposium on Wireless Systems within the IEEE International Conferences on Intelligent Data Acquisition and Advanced Computing Systems: Technology and Applications (IDAACS-SWS) [26-27 September, 2016; Offenburg, Germany]

2016

Vortrag

Digital Nachhaltig Elektrotechnik und Medientechnik

High Q Impedance Matching for RF Energy Harvesting Applications

2016 IEEE 3rd International Symposium on Wireless Systems within the IEEE International Conferences on Intelligent Data Acquisition and Advanced Computing Systems: Technology and Applications (IDAACS-SWS), Offenburg

2016

Beitrag (Sammelband oder Tagungsband)

Improving the Efficiency of RF Energy Harvesting

Proceedings of Wireless Congress 2015: Systems and Applications (17-18 November, 2015; Munich, Germany)

2015

Gerald Kupris, Christian Merz

Beitrag (Sammelband oder Tagungsband)

Improving the Efficiency of RF Energy Harvesting

Proceedings of Wireless Congress 2015: Systems & Applications (09.-10.11.2015, München)

2015

Vortrag

Improving the Efficiency of RF Energy Harvesting

Wireless Congress 2015: Systems & Applications, München

2015

Zeitschriftenartikel

Effizienzsteigerung von Energy Harvesting Schaltungen durch High-Q-Matching

Bavarian Journal of Applied Sciences, vol. 1, no. 1, pp. 94-104

2015

DOI: 10.25929/aqcz-4z34

Digital Nachhaltig Elektrotechnik und Medientechnik

Unter RF Energy Harvesting versteht man die Gewinnung geringer Energie aus einem elektromagnetischen Feld. Diese Energie kann benutzt werden, um ein kleines Mikrosystem, wie z. B. ein draht- und batterieloses Sensorsystem, zu versorgen. An der Technischen Hochschule Deggendorf ist ein derartiges RF Energy Harvesting System entwickelt und getestet worden. Diese Publikation beschreibt die einzelnen Schaltblöcke des RF Energy Harvesting Systems und zeigt eine explizite Möglichkeit auf, das System zu verbessern. Die Methode beruht auf der Verwendung von Anpassungsnetzwerken mit besonders hoher Güte (High-Q-Matching), welche die Gesamteffizienz von RF Energy Harvesting Systemen erhöhen. Anstatt herkömmliche Induktivitäten und Kapazitäten als Anpassungselemente zu verwenden, werden Elemente mit hoher Güte, wie z. B. Akustische-Oberflächenwellen-Resonatoren, benutzt. Verschiedene High-Q- und Low-Q-Anpassungsnetzwerke werden in dieser Arbeit simuliert und ihre Vor- und Nachteile diskutiert. RF energy harvesting is the extraction of small amounts of energy from an electromagnetic field. This energy can be used to power a tiny microsystem like a wireless and battery-less sensor. At Deggendorf Institute of Technology we have constructed and tested a RF energy harvesting circuit. This paper describes the building blocks of an RF energy harvesting system and explicitly discusses a possibility of improving the system. The method deals with high Q matching circuits that increase the overall efficiency of RF energy harvesting circuits. Instead of common inductive and capacitive matching elements, high Q elements such like surface acoustic wave resonators are used. Different high Q and low Q matching circuits are simulated in the paper and their advantages and disadvantages are discussed.

Beitrag (Sammelband oder Tagungsband)

Digital Nachhaltig Elektrotechnik und Medientechnik

RF Energy Harvesting for Wireless and Battery-less Sensors

Proceedings of Wireless Congress 2014: Systems and Applications (12-13 November, 2014; Munich, Germany)

2014

Beitrag (Sammelband oder Tagungsband)

A Low Power Design for Radio Frequency Energy Harvesting Applications

Proceedings of the 2014 2nd International Symposium on Wireless Systems within the Conferences on Intelligent Data Acquisition and Advanced Computing Systems (IDAACS; 11-12 September, 2014; Offenburg, Germany)

2014

Digital Nachhaltig Elektrotechnik und Medientechnik

A new design for a radio frequency (RF) energy harvesting circuit, which enables capturing energy from an electromagnetic far field, is presented in this paper. First, we present the state of the art of common energy harvesting systems. Second, we introduce some important preconsiderations concerning near and far field propagation and how to calculate the expected power at the input of the system. Third, we describe the design of a RF energy harvesting system. The system consists of a quarter-wave monopole antenna, a matching circuit, an energy conversion module, an energy storage capacitor, a low-power comparator and a DC-to-DC converter. The RF energy harvester operates at a frequency band of 868 MHz and creates a pulsed output voltage of about 1.8 V at an input power of at least -6 dBm. The system can be used to power a wireless low-power sensor node. With this approach, a battery-less sensor network is made possible.

Beitrag (Sammelband oder Tagungsband)

DOI: 10.1109/AE.2014.7011703

Design and Optimization of a Radio Frequency Energy Harvesting System for Energizing Low Power Devices

Proceedings of the 2014 International Conference on Applied Electronics (9-10 September, 2014; Pilsen, Czech Republic)

2014

Digital Nachhaltig Elektrotechnik und Medientechnik

This paper proposes a radio frequency (RF) energy harvesting system which enables scavenging energy from an electromagnetic far field. The system consists of a quarter-wave monopole antenna, a matching circuit, an energy conversion module, an energy storage capacitor, a low-power comparator and a DC-to-DC converter. The RF energy harvester operates at a frequency band of 868 MHz and creates a pulsed output voltage of about 1.8 V at an input power of at least -6 dBm. The system can be used to power a wireless low-power sensor node. With this approach, a battery-less sensor network is made possible.

Beitrag (Sammelband oder Tagungsband)

Digital Nachhaltig Elektrotechnik und Medientechnik

Speisung von energieautarken Sensorsystemen durch elektromagnetische Felder

Konferenzband zum 1. Elektronik Power Management Congress (EMC) 2014 (02.-03.07.2014; München), Haar

2014

ISBN: 978-3-645-50135-4

Beitrag (Sammelband oder Tagungsband)

Wireless and Battery-less Sensor Using RF Energy Harvesting

etc2014 - 34. European Telemetry and Test Conference (03.-04.06.2014; Nürnberg), Wunstorf

2014

ISBN: 978-3-9813484-7-7

DOI: 10.5162/etc2014/1.1

The contribution introduces a RF energy harvesting circuit which can be used to power a wireless and battery-less sensor system. The sensor can be powered wirelessly over a distance of about two meters. The basic principles of RF energy harvesting are explained, it is shown how the system can be designed and special considerations are discussed. The proposed RF energy harvesting system operates at a frequency of 866.6 MHz, so that far field propagation is present. The system consists of an antenna, a matching circuit, a RF-to-DC conversion circuit and a power management module, including a storage capacitor, a comparator and a DC-to-DC converter. The harvester produces a pulsed output voltage of 1.8 V at an input power of at least -6 dBm.

Vortrag

RF Energy Harvesting for Wireless and Battery-less Sensors

Wireless Congress 2014: Systems and Applications, München

2014

Vortrag