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The active power filter (APF) is attracting more and more attention for its outstanding performance in current and voltage ripple compensation. As modern high-energy accelerators are demanding much more stringent current ripple guideline,…

Accelerator Physics · Physics 2015-04-06 Guo Xiaoling , Cheng Jian , Zhang Bo , Zhang Jing

All-optical computing has recently emerged as a vibrant research field in response to the energy crisis and the growing demand for information processing. However, the efficiency of subwavelength-scale all-optical devices remains relatively…

Applied Physics · Physics 2023-10-12 Jie Xu , Yun You , Fengwen Kang , Sanshui Xiao , Lujun Hong , Yun Shen , Yamei Luo , Kosmas L. Tsakmakidis

All-electrical control of spin transport in nanostructures has been the central interest and chal- lenge of spin physics and spintronics. Here we demonstrate on-chip spin polarizing/filtering actions by driving the gate-defined one…

Mesoscale and Nanoscale Physics · Physics 2012-11-13 T. -M. Chen , M. Pepper , I. Farrer , G. A. C. Jones , D. A. Ritchie

In this work, a non-linear controller designed using non-linear transformation linearization and feedback is proposed for an inverter connected to a weak grid through a single-stage inductive filter. The proposed strategy is…

This Ph.D. dissertation contains results in two different but related fields: the implementation of model predictive control (MPC) in embedded systems using first order methods, and restart schemes for accelerated first order methods…

Optimization and Control · Mathematics 2021-09-07 Pablo Krupa

This paper expands on the previously described reflectionless filters - that is, filters having, in principle, identically-zero reflection coefficient at all frequencies - by introducing a wide variety of new reflectionless structures that…

Instrumentation and Methods for Astrophysics · Physics 2015-06-22 Matthew A. Morgan , Tod A. Boyd

The need for a high-performance transceiver with high Signal to Noise Ratio (SNR) has driven the communication system to utilize the latest technique identified as oversampling systems. It was the most economical modulator and decimation in…

Signal Processing · Electrical Eng. & Systems 2018-07-30 Rozita Teymourzadeh , Yazan Samir Algnabi , Masuri Othman , Md Shabiul Islam , Mok Vee Hong

We present the idea and proof of principle measurements for an angular-selective active filter for charged particles. The motivation for the setup arises from the need to distinguish background electrons from signal electrons in a…

Electromagnetic noise is one of the key external factors decreasing superconducting qubits coherence. Matched coaxial filters can prevent microwave and IR photons negative influence on superconducting quantum circuits. Here, we report on…

When Fourier series are employed to solve partial differential equations, low-pass filters can be used to regularize divergent series that may appear. In this paper we show that the linear low-pass filters defined in a previous paper can be…

Complex Variables · Mathematics 2015-03-25 Jorge L. deLyra

An optical equivalent of the field-programmable gate array (FPGA) is of great interest to large-scale photonic integrated circuits. Previous programmable photonic devices relying on the weak, volatile thermo-optic or electro-optic effect…

Applied Physics · Physics 2020-01-28 Peipeng Xu , Jiajiu Zheng , Jonathan Doylend , Arka Majumdar

This paper addresses the problem of state and parameter estimation for a class of second-order systems with single output. A new filtered transformation is proposed for the system via dynamic vector and matrix. In this method, the dynamics…

Systems and Control · Computer Science 2018-03-14 Mehdi Tavan , Kamel Sabahi , Saeid Hoseinzadeh

Scalability and modularity are key features for future power converters, such that these systems can be easily employed in many applications with different electrical specifications. In this thesis, the potential of a new bidirectional…

Systems and Control · Electrical Eng. & Systems 2024-02-02 Aidar Zhetessov

Direct current (DC) converters play an essential role in electronic circuits. Conventional high-efficiency DC voltage converters, especially step-up type, rely on switch-mode operation, where energy is periodically stored within and…

The application of multilevel converters to renewable energy systems is a growing topic due to their advantages in energy efficiency. Regarding its control, model predictive control (MPC) has become very appealing due to its natural…

Systems and Control · Electrical Eng. & Systems 2021-04-06 Joaquin G. Ordonez , Francisco Gordillo , Pablo Montero-Robina , Daniel Limon

Manipulation of qudits in optical tables is a difficult and nonscalable task. The use of integrated optical circuits opens new possibilities for the generation, manipulation, and characterization of high dimensional states besides the ease…

Quantum Physics · Physics 2019-07-29 W. R. Cardoso , D. F. Barros , M. R. Barros , S. Pádua

A modulated model predictive controller is designed for an inductor-less modular multilevel converter targeting an MVDC solid-state transformer application. The underlying optimization problem is formulated such that a unique closed-form…

Optimization and Control · Mathematics 2021-03-26 Sandro Martin , Hui Li , Olugbenga Moses Anubi

In this paper a CMOS operational amplifier is presented which operates at 2V power supply and 1microA input bias current at 0.8 micron technology using non conventional mode of operation of MOS transistors and whose input is depended on…

Other Computer Science · Computer Science 2010-07-15 Ratul Kr. Baruah

In this paper, we propose a new hybrid analog and digital combining architecture for millimeter wave (mmWave) multi-user multiple-input multiple-output (MU-MIMO) systems. The proposed structure employs antenna subset selection per radio…

Information Theory · Computer Science 2020-01-03 Eduard E. Bahingayi , Kyungchun Lee

Inducing an inversion layer in organic semiconductors is a highly nontrivial, but critical, achievement for producing organic field-effect transistor (OFET) devices, which rely on the generation of inversion, accumulation, and depletion…

Mesoscale and Nanoscale Physics · Physics 2021-06-03 Zeno Schumacher , Rasa Rejali , Megan Cowie , Andreas Spielhofer , Yoichi Miyahara , Peter Grutter