A Multi-Cycle Switching Technique for Efficient Ultrasonic Wireless Power Delivery

Hesam Sadeghi Gougheri; Mehdi Kiani

doi:10.1109/TCSII.2017.2689014

A Multi-Cycle Switching Technique for Efficient Ultrasonic Wireless Power Delivery

Hesam Sadeghi Gougheri
, Mehdi Kiani

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

A multi-cycle switching technique is proposed for efficient ultrasonic power delivery by providing dc-level shifting and load transformation in the receiver (Rx) side. This technique can increase the power delivery efficiency in the Rx and achieve larger voltages across the load (R_L). In the proposed switching scheme, the Rx transducer is first shorted for several power carrier cycles, T_p, to store the energy into the Rx ultrasonic transducer, and then is opened to deliver the energy to the load. A circuit model for this scheme has been presented and verified by simulations. In a proof-of-concept measurement setup, the proposed ultrasonic WPT link, operating at f_p = 1/T_p = 1.02 MHz, achieved a large rectified voltage (V_L) of 4.7 V by shorting the Rx transducer for 5×T_p and then delivered the energy to an R_L of 100 kΩ within T_p, with the switching rate of f_sw = 1/6T_p = 170 kHz. For the same input power, a conventional ultrasonic link with a passive full-wave rectifier achieved a small V_L of 1 V.

Original language	English (US)
Pages (from-to)	286-290
Number of pages	5
Journal	IEEE Transactions on Circuits and Systems II: Express Briefs
Volume	65
Issue number	3
DOIs	https://doi.org/10.1109/TCSII.2017.2689014
State	Published - Mar 2018

All Science Journal Classification (ASJC) codes

Electrical and Electronic Engineering

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10.1109/TCSII.2017.2689014

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title = "A Multi-Cycle Switching Technique for Efficient Ultrasonic Wireless Power Delivery",

abstract = "A multi-cycle switching technique is proposed for efficient ultrasonic power delivery by providing dc-level shifting and load transformation in the receiver (Rx) side. This technique can increase the power delivery efficiency in the Rx and achieve larger voltages across the load (RL). In the proposed switching scheme, the Rx transducer is first shorted for several power carrier cycles, Tp, to store the energy into the Rx ultrasonic transducer, and then is opened to deliver the energy to the load. A circuit model for this scheme has been presented and verified by simulations. In a proof-of-concept measurement setup, the proposed ultrasonic WPT link, operating at fp = 1/Tp = 1.02 MHz, achieved a large rectified voltage (VL) of 4.7 V by shorting the Rx transducer for 5×Tp and then delivered the energy to an RL of 100 kΩ within Tp, with the switching rate of fsw = 1/6Tp = 170 kHz. For the same input power, a conventional ultrasonic link with a passive full-wave rectifier achieved a small VL of 1 V.",

author = "Gougheri, \{Hesam Sadeghi\} and Mehdi Kiani",

note = "Publisher Copyright: {\textcopyright} 2017 IEEE.",

year = "2018",

month = mar,

doi = "10.1109/TCSII.2017.2689014",

language = "English (US)",

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pages = "286--290",

journal = "IEEE Transactions on Circuits and Systems II: Express Briefs",

issn = "1549-7747",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "3",

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T1 - A Multi-Cycle Switching Technique for Efficient Ultrasonic Wireless Power Delivery

AU - Gougheri, Hesam Sadeghi

AU - Kiani, Mehdi

PY - 2018/3

Y1 - 2018/3

N2 - A multi-cycle switching technique is proposed for efficient ultrasonic power delivery by providing dc-level shifting and load transformation in the receiver (Rx) side. This technique can increase the power delivery efficiency in the Rx and achieve larger voltages across the load (RL). In the proposed switching scheme, the Rx transducer is first shorted for several power carrier cycles, Tp, to store the energy into the Rx ultrasonic transducer, and then is opened to deliver the energy to the load. A circuit model for this scheme has been presented and verified by simulations. In a proof-of-concept measurement setup, the proposed ultrasonic WPT link, operating at fp = 1/Tp = 1.02 MHz, achieved a large rectified voltage (VL) of 4.7 V by shorting the Rx transducer for 5×Tp and then delivered the energy to an RL of 100 kΩ within Tp, with the switching rate of fsw = 1/6Tp = 170 kHz. For the same input power, a conventional ultrasonic link with a passive full-wave rectifier achieved a small VL of 1 V.

AB - A multi-cycle switching technique is proposed for efficient ultrasonic power delivery by providing dc-level shifting and load transformation in the receiver (Rx) side. This technique can increase the power delivery efficiency in the Rx and achieve larger voltages across the load (RL). In the proposed switching scheme, the Rx transducer is first shorted for several power carrier cycles, Tp, to store the energy into the Rx ultrasonic transducer, and then is opened to deliver the energy to the load. A circuit model for this scheme has been presented and verified by simulations. In a proof-of-concept measurement setup, the proposed ultrasonic WPT link, operating at fp = 1/Tp = 1.02 MHz, achieved a large rectified voltage (VL) of 4.7 V by shorting the Rx transducer for 5×Tp and then delivered the energy to an RL of 100 kΩ within Tp, with the switching rate of fsw = 1/6Tp = 170 kHz. For the same input power, a conventional ultrasonic link with a passive full-wave rectifier achieved a small VL of 1 V.

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A Multi-Cycle Switching Technique for Efficient Ultrasonic Wireless Power Delivery

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