Author's Latest Posts


Chiplets for Future Automotive Application


Abstract Autonomous vehicles and associated ADAS systems are driving vehicle electronics content to unprecedented levels. These systems require significant processing power via a centralized system. Chiplets are one solution to distribute functionality on different technologies and can help to secure the supply chain and reduce rising development costs in advanced IC nodes. This traditionally ... » read more

Joint Interdisciplinary Work To Enable Novel, Industry-Ready Chiplet Solutions


Fraunhofer is going to establish the Chiplet Center of Excellence (CCoE), which is a unique research activity based on Fraunhofer‘s long experience and broad research portfolio in design, implementation and test of 2.5 and 3D integrated electronic systems. The Center aims at establishing a common understanding among the partners and at creating a suitable chiplet development methodology. This... » read more

Low-Power Relaxation Oscillator With Temperature-Compensated Thyristor Decision Elements


This paper presents a low-power 140 kHz relaxation oscillator (ROSC) for low-frequency clock generators and timers. In voltage-mode ROSCs, unavoidable shunt current consumption results from voltage slewing at the integration capacitor. The proposed circuit employs CMOS thyristor-based decision elements which effectively reduce shunt currents by exploiting internal positive feedback. A complemen... » read more

An Empirical Comparison Of Optimizers For Quantum Machine Learning With SPSA-Based Gradients


Variational quantum algorithms (VQAs) have attracted a lot of attention from the quantum computing community for the last few years. Their hybrid quantum-classical nature with relatively shallow quantum circuits makes them a promising platform for demonstrating the capabilities of noisy intermediate scale quantum (NISQ) devices. Although the classical machine learning community focuses on gradi... » read more

SAP: A Secure Low-Latency Protocol for Mitigating High Computation Overhead in WI-FI Networks


The increase in popularity of wireless networks in industrial, embedded, medical and public sectors has made them an appealing attack surface for attackers who exploit the vulnerabilities in network protocols to launch attacks such as Evil Twin, Man-in-the-middle, sniffing, etc., which may result in economic and non-economic losses. To protect wireless networks against such attacks, IEEE 802.11... » read more

Uncovering Instabilities In Variational-Quantum Deep Q-Networks


By Maja Franz (1), Lucas Wolf (1), Maniraman Periyasamy (2), Christian Ufrecht (2), Daniel D. Scherer (2), Axel Plinge (2), Christopher Mutschler (2), Wolfgang Mauerer (1,3) (1) Technical University of Applied Sciences, Regensburg, Germany, (2) Fraunhofer-IIS, Fraunhofer Institute for Integrated Circuits IIS, Division Positioning and Networks, Nuremberg, Germany, (3) Siemens AG, Corporate ... » read more

Generating the Generator: A User-Driven And Template-Based Approach Towards Analog Layout Automation


Various analog design automation attempts have addressed the shortcomings of the still largely manual and, thus, inefficient and risky analog design approach. These methods can roughly be divided into synthesis and procedural generation. An important key aspect has, however, rarely been considered: usability. While synthesis requires sophisticated constraints, procedural generators require expe... » read more

On The Reverse Breakdown Behavior Of GaAs PIN Diodes For High Power Applications


In the field of power electronics, the compound semiconductors gallium nitride and silicon carbide are dominating the market. Due to its beneficial properties, gallium arsenide is gaining more and more importance. The aim is to manufacture devices based on gallium arsenide for use in power electronics with comparable or better properties, but at lower costs. In this work, a first GaAs PIN diode... » read more

Holistic Die-to-Die Interface Design Methodology For 2.5-D Multi-Chip-Module Systems


More than Moore technologies can be supported by system level diversification enabled by chiplet based integrated systems within multi-chip-modules (MCM) and silicon interposer based 2.5D systems. The division of large system-on-chip dies into smaller chiplets with different technology nodes specific to the chiplet application requirement enables the performance enhancement at system level whil... » read more

Detection Of Electric Vehicles And Photovoltaic Systems In Smart Meter Data


In the course of the switch to renewable energy sources, there is a shift from a few large energy sources (power plants) to a large number of small, distributed energy sources (e.g., photovoltaic systems) and energy storage devices (e.g., electric vehicles). This results in the need to know and identify these energy sources and sinks as soon as new devices are installed, in order to ensure grid... » read more

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