A Broadband High-Efficiency Rectifier for Mid-Field Wireless Power Transfer
(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:
https://lup.lub.lu.se/record/4893e394-8a25-4670-a4fe-8cef9c8ce0fc
- author
- Le, Giang ; Nguyen, Ngan ; Au, Ngoc Duc LU and Seo, Chulhun
- publishing date
- 2021-05-04
- 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}}, }