A millimeter-sized wirelessly powered and remotely controlled locomotive implant

<a href="https://embed.stanford.edu/iframe/?url=https%3A%2F%2Fpurl.stanford.edu%2Fmc396tg3704" class="su-underline">Show Content</a>

Abstract/Contents

Abstract: A wirelessly powered and controlled implantable device capable of locomotion in a fluid medium is presented. Two scalable low-power propulsion methods are described that achieve roughly an order of magnitude better performance than existing methods in terms of thrust conversion efficiency. The wireless prototype occupies 0.6mm x 1mm in 65 nm CMOS with an external 2mm x 2mm receive antenna . The IC consists of a matching network, a rectifier, a bandgap reference, a regulator, a demodulator, a digital controller, and high-current drivers that interface directly with the propulsion system. It receives 500 uW from a 2 W 1.86 GHz power signal at a distance of 5 cm. Asynchronous pulse-width modulation on the carrier allows for data rates from 2.5-25 Mbps with energy efficiency of 0.5 pJ/b at 10 Mbps. The received data configures the propulsion system drivers, which are capable of driving up to 2 mA at 0.2 V and can achieve a speed of 0.53 cm/sec in a 60 mT magnetic field.

Type of resource	text
Form	electronic; electronic resource; remote
Extent	1 online resource.
Publication date	2012
Issuance	monographic
Language	English

Associated with	Pivonka, Daniel Michael
Associated with	Stanford University, Department of Electrical Engineering
Primary advisor	Meng, Teresa H
Primary advisor	Poon, Ada Shuk Yan
Thesis advisor	Meng, Teresa H
Thesis advisor	Poon, Ada Shuk Yan
Thesis advisor	Howe, Roger Thomas
Advisor	Howe, Roger Thomas

Genre	Theses

Statement of responsibility	Daniel Michael Pivonka.
Note	Submitted to the Department of Electrical Engineering.
Thesis	Thesis (Ph.D.)--Stanford University, 2012.
Location	electronic resource

View in SearchWorks

Loading usage metrics...