@misc{Killat, author = {Killat, Dirk}, title = {A One-Chip Solution for Electronic Ballasts}, series = {Power Electronics Technology}, volume = {30}, journal = {Power Electronics Technology}, number = {3}, pages = {22 -- 27}, language = {en} } @misc{KillatXuZhuetal., author = {Killat, Dirk and Xu, Weiwei and Zhu, Xiaoting and Hong, Zhiliang}, title = {A single-inductor dual-output switching converter with average current mode control}, series = {Journal of Semiconductors}, volume = {39}, journal = {Journal of Semiconductors}, number = {9}, issn = {1674-4926}, pages = {095012-1 -- 095012-6}, language = {en} } @misc{KillatXuLietal., author = {Killat, Dirk and Xu, Weiwei and Li, Ye and Gong, Xiaohan and Hong, Zhiliang}, title = {A Dual-Mode Single-Inductor Dual-Output Switching Converter with Small Ripple}, series = {IEEE transactions on power electronics}, volume = {25}, journal = {IEEE transactions on power electronics}, number = {3}, issn = {0885-8993}, pages = {614 -- 623}, language = {en} } @misc{PashminehKillat, author = {Pashmineh, Sara and Killat, Dirk}, title = {High-voltage circuits for power management on 65 nm CMOS}, series = {Advances in Radio Science}, journal = {Advances in Radio Science}, number = {13}, doi = {10.5194/ars-13-109-2015}, pages = {109 -- 120}, abstract = {This paper presents two high-voltage circuits used in power management, a switching driver for buck converter with optimized on-resistance and a low dropout (LDO) voltage regulator with 2-stacked pMOS pass devices. The circuit design is based on stacked MOSFETs, thus the circuits are technology independent.}, language = {en} } @misc{KillatSchmitz, author = {Killat, Dirk and Schmitz, Richard}, title = {A reflected-light receiver with 2 nA sensitivity using CDS and separate low-pass filtering of the input signal at each clock-phase}, series = {Sensors and Actuators}, volume = {52}, journal = {Sensors and Actuators}, number = {1-3}, issn = {0924-4247}, doi = {10.1016/0924-4247(96)80145-2}, pages = {175 -- 178}, abstract = {The design of an integrated receiver for reflected light using correlated double sampling (CDS) is presented. CDS has the disadvantage that input signals of high frequencies are folded back to the base band caused by sampling the continuous input signal. However, the circuit presented here uses a new method to limit the bandwidth of the CDS input signal. Two filter-capacitors, one for each clock phase, are periodically connected to the input of the CDS circuit. As the input signal is low-pass filtered by the ohmic output resistance of the optical sensor in conjuction with the filter-capacitors, aliasing can be avoided. Measurements of a test circuit demonstrate the effectiveness of this principle.}, language = {en} } @misc{BramburgerZinkeKillat, author = {Bramburger, Stefan and Zinke, Benny and Killat, Dirk}, title = {Interpolation algorithm for asynchronous ADC-data}, series = {Advances in radio science}, volume = {15}, journal = {Advances in radio science}, issn = {1684-9973}, doi = {10.5194/ars-15-163-2017}, pages = {163 -- 168}, abstract = {This paper presents a modified interpolation algo- rithm for signals with variable data rate from asynchronous ADCs. The Adaptive weights Conjugate gradient Toeplitz matrix (ACT) algorithm is extended to operate with a contin- uous data stream. An additional preprocessing of data with constant and linear sections and a weighted overlap of step- by-step into spectral domain transformed signals improve the reconstruction of the asycnhronous ADC signal. The interpo- lation method can be used if asynchronous ADC data is fed into synchronous digital signal processing.}, language = {en} } @misc{MendoncaMartinsRadeckeretal., author = {Mendonca, Lucas Sangoi and Martins, Leandro Tom{\´e} and Radecker, Matthias and Bisogno, F{\´a}bio Ecke and Killat, Dirk}, title = {Normalized Modeling of Piezoelectric Energy Harvester Based on Equivalence Transformation and Unit-Less Parameters}, series = {Journal of Microelectromechanical Systems}, volume = {28}, journal = {Journal of Microelectromechanical Systems}, number = {4}, issn = {1941-0158}, doi = {10.1109/JMEMS.2019.2921649}, pages = {666 -- 677}, abstract = {Micro-electromechanical systems are ubiquitous in several energy harvesting solutions and can be used in applications such as bio-implantable devices and wireless micro-sensors. Piezoelectricity is an interesting key to perform the interface between environmental extracted energy and the power delivered to the load due to the use of mechanical vibration and resonance features. However, it is necessary for a detailed analysis in order to obtain an accurate understanding of the system. In this regard, some works deal with the normalization procedures to analyze the piezoelectric component behavior based on the mechanical resonance frequency. In order to enhance the system modeling, the electromechanical resonance frequency must also be analyzed. This paper deals with an approach to model the piezoelectric component that allows analyzing several unitless parameters that are critical to improve the performance of the system. In addition, a state-space model for the piezo-harvester based on the Class-E resonant rectifier is presented. Some experimental results are shown to validate the theoretical approach. [2019-0082].}, language = {en} } @misc{BramburgerKillat, author = {Bramburger, Stefan and Killat, Dirk}, title = {10-bit tracking ADC with a multi-bit quantizer, variable step size and segmented current-steering DAC}, series = {Advances in Radio Science}, volume = {Vol. 17}, journal = {Advances in Radio Science}, issn = {1684-9973}, doi = {10.5194/ars-17-161-2019}, pages = {161 -- 167}, abstract = {This paper presents a 10-bit tracking ADC using a multi-bit quantiser and a segmented current-steering DAC. The quantiser allows a dynamical adjustment of the step size dependent on the input signal waveform. This mitigates the limited slew rate of delta encoded ADCs. Energy consumption induced by 1 LSB ripple is removed by the quantiser. The segmented current-steering DAC allows simple control, good monotonicity and improved transient response when compared to previous design as well as potential power reduction.}, language = {en} } @misc{KoeppelUlmannHeimannetal., author = {K{\"o}ppel, Sven and Ulmann, Bernd and Heimann, Lars and Killat, Dirk}, title = {Using analog computers in today's largest computational challenges}, series = {Advances in Radio Science}, volume = {19}, journal = {Advances in Radio Science}, issn = {1684-9973}, doi = {10.5194/ars-19-105-2021}, pages = {105 -- 116}, language = {en} } @misc{KillatUlmannKoeppel, author = {Killat, Dirk and Ulmann, Bernd and K{\"o}ppel, Sven}, title = {Hybrid integrators with predictive overload estimation for analog computers and continuous-time ΔΣ modulators}, series = {Advances in Radio Science}, volume = {21}, journal = {Advances in Radio Science}, issn = {1684-9973}, doi = {10.5194/ars-21-89-2023}, pages = {89 -- 100}, language = {en} }