NDLI: Instantaneous power variance and radio frequency to dc conversion efficiency of wireless power transfer systems

Content Provider	IET Digital Library
Author	Blanco, Javier Bolos, Ferran Georgiadis, Apostolos
Abstract	This study compares the maximum rectifier radio frequency (RF)–dc conversion efficiency for various input signals with random modulation. The instantaneous power variance (IPV) is proposed as an easy to compute parameter to classify the effect of modulation on the obtained rectifier efficiency. A prototype ultra high frequency (UHF) rectifier is used to simulate as well as measure the performance of randomly modulated signals with binary phase-shift keying (BPSK), quadrature phase-shift keying (QPSK), 8 phase-shift keying (PSK) and 64 quadrature amplitude modulation (QAM) modulations. In addition to considering different modulation formats, the roll-off factor of the baseband filter is also varied due to the fact that it has a strong impact on the time-varying nature of the signal envelope. For the given rectifier, it is shown that the peak RF–dc conversion efficiency versus the output load is shifted to larger load values for signals with higher IPV. Furthermore, by comparing signals with different time-varying envelope characteristics, it is shown that IPV represents a more accurate signal characteristic than peak-to-average power ratio in terms of properly characterising the effect of modulation on the rectifier efficiency.
Starting Page	1065
Ending Page	1070
Page Count	6
ISSN	17518725
Volume Number	10
e-ISSN	17518733
Issue Number	Issue 10, Jul (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-map/10/10
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-map.2015.0790
Journal	IET Microwaves, Antennas & Propagation
Publisher Date	2016-07-18
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Baseband Filter BPSK Filter Inductive Power Transmission Instantaneous Power Variance Maximum Rectifier Radio Frequency Modulated Signal Modulation Modulation Formats Modulations Peak-to-average Power Ratio in Phase Shift Keying QPSK Quadrature Amplitude Modulation Radio Frequency Rectifier RF–dc Conversion Efficiency Roll-off Factor Time-varying Envelope Characteristic UHF Rectifier Wireless Power Transfer System
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

DC voltage boosting technique in radio frequency wireless power transfer systems utilising high PAPR digital modulations

Compact Six-Port Transceiver for Time-Division Duplex Systems

Phase noise-tolerant synchronous QPSK/BPSK baseband-type intradyne receiver concept with feedforward carrier recovery

A W-band high-power predistorted direct-conversion digital modulator for transmitter applications

Enhanced radio frequency rectifier with a power splitting/combining topology for wireless energy transfer and harvesting

Generalised constant-envelope DualQPSK and AltBOC modulations for modern GNSS signals

Power Optimized Waveform for Wireless Power Transfer Systems : Simulations and Experiments

A 200-pJ/b MUX-Based RF Transmitter for Implantable Multichannel Neural Recording

Efficiency improvement of an UWB rectifier by using optimized pulse modulation signal: simulation and experiments

Instantaneous power variance and radio frequency to dc conversion efficiency of wireless power transfer systems

Similar Documents

DC voltage boosting technique in radio frequency wireless power transfer systems utilising high PAPR digital modulations

Compact Six-Port Transceiver for Time-Division Duplex Systems

Phase noise-tolerant synchronous QPSK/BPSK baseband-type intradyne receiver concept with feedforward carrier recovery

A W-band high-power predistorted direct-conversion digital modulator for transmitter applications

Enhanced radio frequency rectifier with a power splitting/combining topology for wireless energy transfer and harvesting

Generalised constant-envelope DualQPSK and AltBOC modulations for modern GNSS signals

Power Optimized Waveform for Wireless Power Transfer Systems : Simulations and Experiments

A 200-pJ/b MUX-Based RF Transmitter for Implantable Multichannel Neural Recording

Efficiency improvement of an UWB rectifier by using optimized pulse modulation signal: simulation and experiments

Instantaneous power variance and radio frequency to dc conversion efficiency of wireless power transfer systems