Imperial College London


Faculty of EngineeringDepartment of Electrical and Electronic Engineering

Research Assistant







Electrical EngineeringSouth Kensington Campus






BibTex format

author = {Mifsud, A and Haci, D and Ghoreishizadeh, SS and Liu, Y and Constandinou, TG},
doi = {10.1109/BIOCAS.2017.8325208},
pages = {1--4},
title = {Adaptive power regulation and data delivery for multi-module implants},
url = {},
year = {2018}

RIS format (EndNote, RefMan)

AB - © 2017 IEEE. Emerging applications for implantable devices are requiring multi-unit systems with intrabody transmission of power and data through wireline interfaces. This paper proposes a novel method for power delivery within such a configuration that makes use of closed loop dynamic regulation. This is implemented for an implantable application requiring a single master and multiple identical slave devices utilising a parallel-connected 4-wire interface. The power regulation is achieved within the master unit through closed loop monitoring of the current consumption to the wired link. Simultaneous power transfer and full-duplex data communication is achieved by superimposing the power carrier and downlink data over two wires and uplink data over a second pair of wires. Measured results using a fully isolated (AC coupled) 4-wire lead, demonstrate this implementation can transmit up to 120 mW of power at 6 V (at the slave device, after eliminating any losses). The master device has a maximum efficiency of 80 % including a dominant dynamic power loss. A 6 V constant supply at the slave device is recovered 1.5 ms after a step of 22 mA.
AU - Mifsud,A
AU - Haci,D
AU - Ghoreishizadeh,SS
AU - Liu,Y
AU - Constandinou,TG
DO - 10.1109/BIOCAS.2017.8325208
EP - 4
PY - 2018///
SP - 1
TI - Adaptive power regulation and data delivery for multi-module implants
UR -
ER -