A Wireless Power and Data Transfer Receiver Achieving 75.4% Effective Power Conversion Efficiency and Supporting 0.1% Modulation Depth for ASK Demodulation

Ye, Dawei; Wang, Yu; Xiang, Yingfei; Lyu, Liangjian; Min, Hao; Shi, C.-J.R.

doi:10.1109/jssc.2019.2943871

Cited by 35 publications

(13 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The PMU includes a 13.56 MHz RF power harvester and a switched-capacitor DC-DC converter for wireless and battery-powered scenarios. On-chip low drop-out regulators (LDOs) and bias generators provide suitable operation voltage for each block [ 22 , 23 ]. Figure 4 b shows the micrograph of the chip fabricated in a 65 nm complementary metal-oxide-semiconductor (CMOS) process with a total area of 3.7 × 3.7 mm 2 .…”

Section: Methodsmentioning

confidence: 99%

Flexible Pressure Sensor Array with Multi-Channel Wireless Readout Chip

Wangxu

Lyu

et al. 2022

Sensors

View full text Add to dashboard Cite

Flexible sensor arrays are widely used for wearable physiological signal recording applications. A high density sensor array requires the signal readout to be compatible with multiple channels. This paper presents a highly-integrated remote health monitoring system integrating a flexible pressure sensor array with a multi-channel wireless readout chip. The custom-designed chip features 64 voltage readout channels, a power management unit, and a wireless transceiver. The whole chip fabricated in a 65 nm complementary metal-oxide-semiconductor (CMOS) process occupies 3.7 × 3.7 mm2, and the core blocks consume 2.3 mW from a 1 V supply in the wireless recording mode. The proposed multi-channel system is validated by measuring the ballistocardiogram (BCG) and pulse wave, which paves the way for future portable remote human physiological signals monitoring devices.

show abstract

Section: Methodsmentioning

confidence: 99%

Flexible Pressure Sensor Array with Multi-Channel Wireless Readout Chip

Wangxu

Lyu

et al. 2022

Sensors

View full text Add to dashboard Cite

show abstract

“…With the optimized coupling coils driven by the BPSK modulated Class-E amplifier, the work presents competitive coil FoM among the link based on single pair of coils. Although the transmission efficiency (40.7%) is reduced by 34.7% compared to 75.4% in [36], the maximum data rate is increased by 15x, due to the proposed BPSK modulation. Thanks to the proposed innovative digitalassisted-PLL-based demodulator, the highest data rate and the best demodulator FoM have been achieved.…”

Section: Power Transmission Efficiencymentioning

confidence: 95%

An Energy-Autonomous Power-and-Data Telemetry Circuit With Digital-Assisted-PLL-Based BPSK Demodulator for Implantable Flexible Electronics Applications

Pan

Chen

et al. 2021

IEEE Open J. Circuits Syst.

View full text Add to dashboard Cite

“…The design becomes now an optimization problem, where the objective is to maximize (15) by changing the geometry parameters and tuning capacitances, while meeting the constraints such that all distances must be positive and fit into normalized packaging. Additionally, the inductances and geometry parameters are linked together by (8), (9), (12), (17) - (34). Due to the number of turns having to be an integer, the obtained optimization problem is a Mixed Integer Non Linear Problem (MINLP) that can be implemented in any spreadsheet or optimization software (MATLAB, R or GAMS), and optimized using an appropriate non linear solver.…”

Section: Optimization Of the Efficiency Of A Wpdt Systemmentioning

confidence: 99%

“…Indeed, NFC forum recently included a Wireless Charging Mode for IoT devices using the same antenna as for the NFC communication, making it necessary to have the best efficiency for fast power transfer at 13.56 MHz, while allowing communication at the usual data rates [7]. To address these challenges, current literature focuses mainly on the design of more efficient chips, by working especially on the rectifier of the chip [8]- [11] or on the data processing part of the chips [12], [13], or on the voltage management at the entry level of the chip [14]. Meanwhile, because of the evolution of standards and because IoT systems are more and more integrated with challenging space constraints, recent literature has also focused on the integration of inductive power transfer capability with planar rectangular or spiral coils into IoT devices [11], [15], [16].…”

Section: Introductionmentioning

confidence: 99%

A Low Complexity Design Framework for NFC-RFID Inductive Coupled Antennas

et al. 2020

View full text Add to dashboard Cite

Inductive Wireless Power and Data Transfer (WPDT) technology has become a vital enabler to the globalisation of Internet of Things. Driven by an increasing demand for data within applications and by the need to reduce the devices footprint by transmitting data and power with the same antenna, power transfer efficiency has become a barrier to WPDT systems' performance. To overcome the limitations of power transfer efficiency, current research focuses on the design of efficient integrated circuits and does not consider the challenges of inductive antennas' design and system integration. Hence, current system integration methods used in industry to design receivers for WPDT applications still require expensive experimental benchmarking of antennas. This paper introduces a new framework for inductive WPDT systems integration that focuses on the design of inductive coils and tuning capacitances. First, this framework proposes a new planar rectangular coil inductance formula that achieves an average error of 11% based on the testing of one hundred of coils, which out performs the current state of the art. Then, based on a detailed electrical model of both transmitter and receiver of WPDT systems, our design framework computes the coils geometric parameters and tuning capacitances that will optimize the overall efficiency of the WPDT system. Unlike state of the art design approaches, the main advantage of this framework is that it does not require expensive benchmarking of inductive antennas to find the optimal antenna. Verification of our design framework was achieved through a comparative analysis for Very High Bit Rate 13.56 MHz RFID applications. Results indicate an improvement of more than 15% in overall system power transfer efficiency compared to current state of the art methods within a comparatively more cost effective framework. A sensitivity analysis provides an insight and practical guide to implications of manufacturing variances in component parameters.

show abstract

A Wireless Power and Data Transfer Receiver Achieving 75.4% Effective Power Conversion Efficiency and Supporting 0.1% Modulation Depth for ASK Demodulation

Cited by 35 publications

References 17 publications

Flexible Pressure Sensor Array with Multi-Channel Wireless Readout Chip

Flexible Pressure Sensor Array with Multi-Channel Wireless Readout Chip

An Energy-Autonomous Power-and-Data Telemetry Circuit With Digital-Assisted-PLL-Based BPSK Demodulator for Implantable Flexible Electronics Applications

A Low Complexity Design Framework for NFC-RFID Inductive Coupled Antennas

Contact Info

Product

Resources

About