A 72-Channel Resistive-and-Capacitive Sensor-Interface Chip With Noise-Orthogonalizing and Pad-Sharing Techniques

The growing trend of the Internet of Things (IoT) involves trillions of sensors in various applications. An extensive array of parameters need to be gathered concurrently with high-precision, low-cost, and low-power sensor nodes, such as resistive (R) and capacitive (C) sensors. Single-chip channel fusion can be an effective solution, while...

Development Of An Energy-Efficient Gaming Platform To Evaluate Novel User Interaction

In the modern age, the proliferation of electronic devices and their subsequent waste presents an increasing environmental challenge. With the continuing growth of technology and the urgency of sustainability becoming ever more important, there is an ever-increasing need to reimagine how we power and utilize our devices. This has been...

Time-to-Digital Converter for Low-Power Direct Time-of-Flight System

Depth sensing technology has developed rapidly recently due to its broad applications. Time-of-Flight (ToF) is a popular technology in depth sensing because of its advantages in high measuring accuracy and low complexity in image processing. ToF technologies are divided into two kinds: indirect time-of-flight (iToF) and direct Time-of-Flight ...

An Energy-Efficient High-Speed Full-Duplex IR-UWB Transceiver For Joint Radar and Communication (RadCom)

In recent years, short-range reliable wireless system with high data rate and low power consumption has drawn sufficient attention and is in great demand in various applications. For biomedical implantable applications such as neural sensing and Brain-computer Interfaces (BCIs), due to the increasing number of sensing channels and elements, not...

Efficient Memory Architecture for Next Generation Low-Power Embedded Systems

In this thesis we propose a novel memory architecture design that is robust to frequent memory failures targeting next generation low power embedded system. We explore the how the architecture works and perform detailed evaluations to show that our system achieves better performance than the state-of-the-art.

Energy harvesting on the human body: Hybrid charge pump design for cold start compatibility and high efficiency harvesting with minimal footprint

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...

Design of a wideband low-power low noise transconductance amplifier for sub-GHz IoT applications

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...

A Low-Power Standard Cell Library for Cryogenic Operation

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...

Wireless Charger for Hand-held Mobile Devices

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...

Low-power processing and communication

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...

IQ offset and gain mismatch compensation for phase-domain ADC

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...

A 0.5 μA/Channel front-end for implantable and external ambulatory ECG recorders

There is an increasing demand for low power, low voltage, and small size analog readout bio-potential systems. This paper presents an analog front-end for measuring the intra-cardiac signals in implantable and also external ambulatory ECG cardiac recording applications. The analog front-end benefits from voltage to frequency conversion...

A 0.6V, 1μW, low-power low-noise instrumentation amplifier for ECG/BioZ measurement in 40nm CMOS

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...

Design Features of Product-Integrated PV: An Evaluation of Various Factors under Indoor Irradiance Conditions

This thesis explores the field of product-integrated photovoltaics (PIPV), a term which is used for all types of products that contain solar cells in one or more of their surfaces, aiming at providing power during the product’s use. Product-integrated photovoltaics (PIPV) began to be widely introduced around 2000, although the use of PV systems...

A Sampled Voltage Reference

A sampled voltage reference aims to achieve both low-power and low-noise by storing the output of a voltage reference on a capacitor for a long time. This allows the reference to be switched off during the hold period, which leads to lower average power. At the same time, all the voltage reference's noise is pushed down into a bandwidth...

Power efficient digital correlator in the scope of an UWB baseband design

Ultra Wideband (UWB) radio represents a promising way of communication for low power applications in interference-prone environments. For achieving a low power solution the digital baseband architecture needs to be carefully optimized to reduce the total power consumption. Particularly for the computationally intensive synchronization phase that...

Design of Low Power Analog to Digital Converters - Sigma-Delta converters