Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

A Broadband High-Efficiency Rectifier for Mid-Field Wireless Power Transfer

Le, Giang ; Nguyen, Ngan ; Au, Ngoc Duc LU and Seo, Chulhun (2021) In IEEE Microwave and Wireless Components Letters 31(7). p.913-916
Abstract
In this letter, a compact broadband high-efficiency microwave rectifier is presented for powering implantable medical devices located deeply in the human body. By utilizing a modified real frequency technique and an RF step-up transformer at the input matching network, the proposed rectifier has a measured conversion efficiency ( η) exceeding 50% over a 62% fractional bandwidth from 900 to 1700 MHz at 0-dBm input power level. For measured η above 50%, the widest dynamic input power range achieved is from -7 to 14.2 dBm at 1.5 GHz, and the circuit sensitivity reaches up to -20 dBm with at least 8% conversion efficiency. The circuit has a compact size of 16×11 mm 2 , being suitable for biomedical implant applications.
Please use this url to cite or link to this publication:
author
; ; and
publishing date
type
Contribution to journal
publication status
published
subject
in
IEEE Microwave and Wireless Components Letters
volume
31
issue
7
pages
913 - 916
publisher
IEEE - Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • scopus:85105890548
ISSN
1531-1309
DOI
10.1109/LMWC.2021.3077566
language
English
LU publication?
no
id
4893e394-8a25-4670-a4fe-8cef9c8ce0fc
date added to LUP
2024-09-20 17:53:34
date last changed
2024-09-23 11:42:05
@article{4893e394-8a25-4670-a4fe-8cef9c8ce0fc,
  abstract     = {{In this letter, a compact broadband high-efficiency microwave rectifier is presented for powering implantable medical devices located deeply in the human body. By utilizing a modified real frequency technique and an RF step-up transformer at the input matching network, the proposed rectifier has a measured conversion efficiency ( η) exceeding 50% over a 62% fractional bandwidth from 900 to 1700 MHz at 0-dBm input power level. For measured η above 50%, the widest dynamic input power range achieved is from -7 to 14.2 dBm at 1.5 GHz, and the circuit sensitivity reaches up to -20 dBm with at least 8% conversion efficiency. The circuit has a compact size of 16×11 mm 2 , being suitable for biomedical implant applications.}},
  author       = {{Le, Giang and Nguyen, Ngan and Au, Ngoc Duc and Seo, Chulhun}},
  issn         = {{1531-1309}},
  language     = {{eng}},
  month        = {{05}},
  number       = {{7}},
  pages        = {{913--916}},
  publisher    = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
  series       = {{IEEE Microwave and Wireless Components Letters}},
  title        = {{A Broadband High-Efficiency Rectifier for Mid-Field Wireless Power Transfer}},
  url          = {{http://dx.doi.org/10.1109/LMWC.2021.3077566}},
  doi          = {{10.1109/LMWC.2021.3077566}},
  volume       = {{31}},
  year         = {{2021}},
}