Results 111 to 120 of about 815,097 (318)

Fundamental Challenges, Physical Implementations, and Integration Strategies for Ising Machines in Large‐Scale Optimization Tasks

Advanced Electronic Materials, EarlyView.
Ising machines are emerging as specialized hardware solvers for computationally hard optimization problems. This review examines five major platforms—digital CMOS, analog CMOS, emerging devices, coherent optics, and quantum systems—highlighting physics‐rooted advantages and shared bottlenecks in scalability and connectivity.
Hyunjun Lee, Joon Pyo Kim, Sanghyeon Kim
wiley   +1 more source

High‐resolution 3D imaging by microwave photonic time division multiplexing‐multiple‐input‐multiple‐output radar with broadband digital beamforming

IET Radar, Sonar & Navigation
A broadband microwave photonic time division multiplexing (TDM) multiple‐input‐multiple‐output (MIMO) radar is proposed in which photonic frequency quadrupling is adopted to generate broadband radar signals and photonic frequency mixing is implemented ...
Yuewen Zhou, Fangzheng Zhang, Jiayuan Kong, Shilong Pan   +3 more
doaj   +1 more source

Continuous Rapid⁃Beam⁃Scanning and Circular⁃Polarized Leaky⁃Wave Antenna Based on Meandering⁃SIW with Defected Ground Structures

Transactions of Nanjing University of Aeronautics and Astronautics
A compact high-scanning-rate circular-polarized leaky-wave antenna （LWA） based on a meandering substrate integrated waveguide （SIW） with defected ground structures （DGSs） is presented.
RUAN Yizheng, NIU Zhenyi, CHEN Weikang, ZHAO Yongjiu, PAN Shilong   +4 more
doaj   +1 more source

Optimal Power Allocation Algorithm for Radar Network Systems Based on Low Probability of Intercept Optimization(in English)

Leida xuebao, 2014
A novel optimal power allocation algorithm for radar network systems is proposed for Low Probability of Intercept (LPI) technology in modern electronic warfare. The algorithm is based on the LPI optimization.
Shi Chen-guang, Wang Fei, Zhou Jian-jiang, Chen Jun   +3 more
doaj   +1 more source

Low-loss microwave photonics links using hollow core fibres. [PDF]

Light Sci Appl, 2022
Zhang X, Feng Z, Marpaung D, Fokoua EN, Sakr H, Hayes JR, Poletti F, Richardson DJ, Slavík R.   +8 more
europepmc   +1 more source

All-integrated universal RF photonic spectral shaper [PDF]

, 2019
We demonstrate a microwave photonic spectral shaper in a silicon chip enabling distinct phase and amplitude modulation transformation. We show unprecedented RF filtering through monolithic integration of the spectral shaper with tunable ring ...
Bedoya, Alvaro Casas, Bogaerts, Wim, Cantaloube, Chris, Eggleton, Benjamin J., Guo, Xin, Liu, Yang, Marpaung, David, Morrison, Blair, Yin, Tangman   +8 more
core  

Exceptional Antimodes in Multi‐Drive Cavity Magnonics

Advanced Electronic Materials, EarlyView.
Driven‐dissipative cavity‐magnonics provides a flexible platform for engineering non‐Hermitian physics such as exceptional points. Here, using a four‐port, three‐mode system with controllable microwave interference, antimodes and coherent perfect extinction (CPE) are realized, enabling active tuning to antimode exceptional points.
Mawgan A. Smith, Ryan D. McKenzie, Alban Joseph, Robert L. Stamps, Rair Macêdo   +4 more
wiley   +1 more source

A New Method of Robust Ground Moving Target Detection Under Different Backgrounds of Airborne SAR Based on Spatial Deformable Module

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Combined with the synthetic aperture radar (SAR) imaging algorithm, diverse simulation sample sets of ground moving targets are constructed to tackle the problem of insufficient measured data in the SAR ground moving target indication algorithm based on ...
He Yan, Hui Liu, Jialin Hao, Wenshuo Xu, Jingdong Zhang, Di Wu, Xudong Wang, Gong Zhang, Daiyin Zhu   +8 more
doaj   +1 more source

Concept for Continuously Tunable Output Filters for Digital Transmitter Architectures

IEEE Access, 2019
This paper presents a novel output filter approach for continuously frequency-tunable digital power amplifiers, suitable for future seamless and band-less applications in 5G, e.g. for cognitive radios (CR). The presented tunable output filter is based on
Christian Schuster, Lukas Schynol, Andreas Wentzel, Florian Huhn, Ersin Polat, Sonke Schmidt, Rolf Jakoby, Wolfgang Heinrich, Holger Maune   +8 more
doaj   +1 more source

Distributed Acoustic Sensing Based on Coherent Microwave Photonics Interferometry. [PDF]

Sensors (Basel), 2021
Hua L, Zhu X, Cheng B, Song Y, Zhang Q, Wu Y, Murdoch LC, Dauson ER, Donahue CM, Xiao H.   +9 more
europepmc   +1 more source