Searched for: subject:"low%5C+power"
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Blanco Abad, Teresa (author)
Long Range Wide Area Networks (LoRaWAN) offer easy deployment, robustness against interference, and operational longevity to energy constrained IoTdevices which communicate in a best-e_ort fashion in extended ranges. However, the simple (ALOHA-like) design of the MAC layer leads to packet collisions in dense LoRaWAN deployments with high traffic...
master thesis 2020
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Hokke, N.H. (author)
We present a new ultra low-power MAC protocol for networks of event-driven energy-harvesting devices. We specifically target applications with extremely stringent energy requirements, using devices void of energy buffers that harvest energy from ephemeral events, \textit{e.g.,} a switch, a vibration, or an impact. To cater for this challenging...
master thesis 2020
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Zwart, C. (author), Donkers, H.J. (author)
The COVID-19 pandemic caused a shortage of Personal Protective Equipment for Healthcare personnel. This project aims to aid in this shortage by extending the lifetime of the filter material used in a mask. This is done in the form of an SPPE, a Smart Personal Protective Equipment. This face mask has two smart filter heads that are modular and...
bachelor thesis 2020
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de Laat, Willem (author), Roeleveld, Rein (author)
The objective of the bachelor graduation project detailed in this thesis is to develop a wireless sensor patch that monitors the health of newborns. The sensor patch replaces the monitoring tasks of nurses during maternity care. The patch measures temperature, heart rate, oxygen saturation and bilirubin. Many babies are born with high bilirubin,...
bachelor thesis 2020
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Šabanović, Armin (author)
This thesis introduces the concept of phase rotation cancellation (PRC) as a previously unknown error mechanism in narrow-band FSK systems, and proposes a new FSK demodulation algorithm to resolve PRC errors. Phase rotation cancellation is defined as an event where the signal phasor rotation in the IQ plane is temporarily cancelled by the...
master thesis 2019
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Parag, Anirudh Kumar (author)
This work focuses on addressing the fundamental limitation on the minimum cold start-up voltage that could be harvested from a thermoelectric element (TEG) for human-body wearable applications. For ultra-low DC voltages, the challenge translates to generating a timed-signal to amplify it up to a value that could be used to drive, say, a boost...
master thesis 2019
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van Hoek, Vincent (author)
This thesis describes the design of an ultra-low power temperature to digital converter. It is intended to monitor the excess heat produced during the wireless charging of implantable medical devices such as pacemakers. The TDC is designed to achieve an accuracy of ±0.1 °C (3 sigma) from 27 °C to 47 °C, and ±0.3 °C (3 sigma) from -40 °C to 85 °C...
master thesis 2019
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van Wietmarschen, Luc (author)
This work proposes a new charge pump design suitable for energy harvesting on small human wearable devices. By using only one system for both cold start and high efficiency harvesting, the required silicon area is heavily reduced. The most fitting energy transducer is determined to be a photovoltaic cell, based on aspects of voltage, power and...
master thesis 2019
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Treffers, Charlotte (author)
The communication standard IEEE802.11ah, also known as Wifi Halow, is developed especially for IoT applications. This standard works in the sub-GHz range and can, therefore, offer a longer transmission range and achieve low power consumption. This makes the standard suitable for IoT applications. In this thesis, a Low Noise Transconductance...
master thesis 2019
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Sunil Sheelavant, Sunil (author)
While there are many technologies and electronic systems used to detect the human vital signs by monitoring the heart beat rate & respiration rate, all these systems rely on physical contact with the human body. Furthermore, each measuring system can only be used for a single person thus increasing the cost and complexity of integrated...
master thesis 2018
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Schriek, Edwin (author)
With the advances towards a quantum computer incorporating many qubits, the demand for a scalable readout and control platform rises. Recent proposals for such a platform exploit the maturity of CMOS technology, to implement the various analog, RF and digital circuits required. To allow for scaling, the electronics that constitute this platform...
master thesis 2018
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Steunebrink, Tim (author)
master thesis 2018
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Kappelle, Daniël (author), Bronkhorst, Erné (author)
This report discusses one part of a project consisting of three parts. The goal of the project is to design a battery less sensor powered by RF energy fields present in an office environment. The sensor is able to measure temperature and is able to communicate wirelessly using a low power communication protocol. In this project the use case of a...
bachelor thesis 2018
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Marting, Louis (author), van der Velden, Joram (author)
This thesis describes the design and prototyping results of a low power wireless power transfer (WPT) system. In particular the design and testing of a transmitter.<br/><br/>Firstly, existing research is discussed and it is found that a significant part of this discusses higher power transfer systems. Here lies the challenge for this thesis: to...
bachelor thesis 2018
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Thiruvelselvam, Senthil Kumar (author)
Batteries are vital sources in many wireless embedded systems applications like the Tire Pressure Management System (TPMS) in the automobile industry. Also, the growth of electric cars will result in an increasing demand for batteries. Although batteries do not directly pollute the environment during their active life, the production phase and...
master thesis 2018
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Kaichouhi, Ali (author)
A phase-domain analog-to-digital converter (PhADC) is a promising alternative to a pair of amplitude-domain in-phase and quadrature (IQ) ADCs for low power FSK/PSK demodulation, but due to the nonlinear amplitude-to-phase conversion, IQ offsets and gain mismatch can produce nonlinear phase distortions which that can lead to phase errors and an...
master thesis 2018
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Kolağasioğlu, Eralp (author)
Cardiovascular diseases are the leading cause of death in the devel- oped world. Preventing these deaths, require long term monitoring and manual inspection of ECG signals, which is a very time consum- ing process. Consequently, a wearable system that can automatically categorize beats is essential.<br/>Neuromorphic machines have been introduced...
master thesis 2018
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Hussaini, Said (author)
master thesis 2017
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Tsorvas, Dimitris (author)
Internet of Things (IoT) encloses the utilization of sensors, actuators and data communication technologies embedded into physical devices enabling them to be tracked, coordinated or controlled over the Internet. Medical IoT refers to the vision where several wearables, sensors and actuators are scattered inside medical facilities and can...
master thesis 2017
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Lin, Q. (author)
This thesis presents a low-power low-noise instrumentation amplifier designed to be implemented in 40 nm CMOS technology and operating from a 0.6 V supply, intended for use in electrocardiogram (ECG) and bio-impedance (BioZ) signal acquisition. This instrumentation amplifier has one ECG channel, one BioZ channel and allows both signals to be...
master thesis 2016
Searched for: subject:"low%5C+power"
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