Showing posts with label ultra-low power. Show all posts
Showing posts with label ultra-low power. Show all posts

Oct 27, 2020

[book] Ultra-Low Power FM-UWB Transceivers for IoT

book cover image
Ultra-Low Power FM-UWB Transceivers for IoT
Vladimir Kopta and Christian Enz
River Publishers, 2020, pp.i-xxiv

Over the past two decades we have witnessed the increasing popularity of the internet of things. The vision of billions of connected objects, able to interact with their environment, is the key driver directing the development of future communication devices. Today, power consumption as well as the cost and size of radios remain some of the key obstacles towards fulfilling this vision. Ultra-Low Power FM-UWB Transceivers for IoT presents the latest developments in the field of low power wireless communication. It promotes the FM-UWB modulation scheme as a candidate for short range communication in different IoT scenarios. The FM-UWB has the potential to provide exactly what is missing today. This spread spectrum technique enables significant reduction in transceiver complexity, making it smaller, cheaper and more energy efficient than most alternative options. The book provides an overview of both circuit-level and architectural techniques used in low power radio design, with a comprehensive study of state-of-the-art examples. It summarizes key theoretical aspects of FM-UWB with a glimpse at potential future research directions. Finally, it gives an insight into a full FM-UWB transceiver design, from system level specifications down to transistor level design, demonstrating the modern power reduction circuit techniques. Ultra-Low Power FM-UWB Transceivers for IoT is a perfect text and reference for engineers working in RF IC design and wireless communication, as well as academic staff and graduate students engaged in low power communication systems research.

Jan 27, 2017

[paper] 400 fJ Per-Cycle Frequency Reference for IoT

A 400 fJ Per-Cycle Frequency Reference for Internet of Things
Mathieu Coustans, François Krummenacher, Christian Terrier and Maher Kayal
IEL, École Polytechnique Fédérale de Lausanne, Switzerland

Abstract—This work presents an ultra-low power oscillator designed to target different contexts, such as crystal-assisted time keeping, reference oscillator to optimize the always on domain of a microcontroller or wake-up timer. This oscillator enables ultra-low power operation in 180nm CMOS technology with EKV3 compact model; the core oscillator consumes 2.5 nW at room temperature, with a temperature stability of 14 ppm/°C [-40°C - 60°C] and 0.07 %/V supply sensitivity [read more...]