US 12,316,388 B2
Method and device for energy transfer and harvesting
Jerald Yoo, Singapore (SG); Jiamin Li, Singapore (SG); Yilong Dong, Singapore (SG); and Jeong Hoan Park, Singapore (SG)
Assigned to National University of Singapore, Singapore (SG)
Appl. No. 17/798,176
Filed by National University of Singapore, Singapore (SG)
PCT Filed Feb. 10, 2021, PCT No. PCT/SG2021/050069
§ 371(c)(1), (2) Date Aug. 8, 2022,
PCT Pub. No. WO2021/162636, PCT Pub. Date Aug. 19, 2021.
Claims priority of application No. 10202001357T (SG), filed on Feb. 14, 2020.
Prior Publication US 2023/0155692 A1, May 18, 2023
Int. Cl. H04B 13/00 (2006.01); H02J 50/00 (2016.01); H02J 50/12 (2016.01); H02J 50/20 (2016.01); H02M 3/00 (2006.01); H02M 3/335 (2006.01)
CPC H04B 13/005 (2013.01) [H02J 50/001 (2020.01); H02J 50/12 (2016.02); H02J 50/20 (2016.02); H02M 3/01 (2021.05); H02M 3/335 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A power receiver, comprising:
(i) a first electrode arranged to be electrically coupled to a body of a living being, the first electrode operable to receive an electrical signal via the body, wherein the electrical signal has a power level;
(ii) a rectifier for converting the received electrical signal into a rectified electrical signal, the rectifier having a plurality of rectifier switches and operable in a bulk biasing mode in which selected rectifier switches of the plurality of rectifier switches are forward bulk biased;
(iii) a DC-DC converter for converting the rectified electrical signal to an output electrical signal, the DC-DC converter having a number of selectable discontinuous mode (DCM) times and operable between a power transmission operation mode in which the electrical signal is transmitted by a power transmitter and a power harvesting operation mode in which the electrical signal is harvested ambient energy, in dependence on the power level of the electrical signal; and
(iv) a controller arranged to select a discontinuous mode (DCM) time from the number of selectable discontinuous mode (DCM) times for the DC-DC converter in response to a present operation mode of the DC-DC converter.