Author's Latest Posts

Low-Power Relaxation Oscillator With Temperature-Compensated Thyristor Decision Elements
By Fraunhofer IIS/EAS - 10 Apr, 2024 - Comments: 0

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
By Fraunhofer IIS/EAS - 14 Feb, 2024 - Comments: 0

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
By Fraunhofer IIS/EAS - 14 Dec, 2023 - Comments: 0

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 Fraunhofer IIS/EAS - 07 Jun, 2023 - Comments: 0

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
By Fraunhofer IIS/EAS - 12 Apr, 2023 - Comments: 0

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
By Fraunhofer IIS/EAS - 11 Jan, 2023 - Comments: 0

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
By Fraunhofer IIS/EAS - 07 Dec, 2022 - Comments: 0

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
By Fraunhofer IIS/EAS - 12 Oct, 2022 - Comments: 0

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

A Multi-Level Analog IC Design Flow For Fast Performance Estimation Using Template-Based Layout Generators And Structural Models
By Fraunhofer IIS/EAS - 12 Sep, 2022 - Comments: 0

Analog IC design is a very challenging task as essential information is missing in the early design stages. Because the simulation of larger designs is exceedingly computationally expensive at lower abstraction levels, conservative assumptions are usually applied that often result in suboptimal performances such as area and power consumption. In order to enable both early performance estimates ... » read more

Machine Learning-Based Optimization Of Chiral Photonic Nanostructures: Evolution- And Neural Network-Based Design
By Fraunhofer IIS/EAS - 08 Jun, 2022 - Comments: 0

Chiral photonics opens new pathways to manipulate light-matter interactions and tailor the optical response of metasurfaces and -materials by nanostructuring nontrivial patterns. Chirality of matter, such as that of molecules, and light, which in the simplest case is given by the handedness of circular polarization, have attracted much attention for applications in chemistry, nanophotonics and ... » read more

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