Results 131 to 140 of about 24,719 (256)

Neural Network-Assisted DPD of Wideband PA Nonlinearity for Sub-Nyquist Sampling Systems. [PDF]

Sensors (Basel)
Liu M, Yang X, Gao J, Cao S, Liao G, Hou G, Gao D.   +6 more
europepmc   +1 more source

Effects of Optical Sampling Pulse Power, RF Power, and Electronic Back-End Bandwidth on the Performance of Photonic Analog-to-Digital Converter. [PDF]

Micromachines (Basel), 2023
Qi J, Chen X, Fu M, Zhang H, Yi W, Xu T, Su D, Zhang H, Wei X, Shi B, Li X.   +10 more
europepmc   +1 more source

High‐Order Nonlinear Photonic Crystal with Ordered Structures for Giant Enhancement of Frequency Tripling

Advanced Science, EarlyView.
A meta‐YAG crystal with artificially order/disorder structures was fabricated to realize the efficient third‐harmonic generation at 343 nm with a conversion efficiency of 4.5×10−3, surpassing six orders of magnitude compared to bulk YAG crystal. Moreover, a wide spectral tunability from 331 to 356 nm was also achieved in the meta‐YAG, indicating its ...
Xiaotian Guo, Qiaoling Han, Fei Liang, Bin Zhang, Dazhi Lu, Haohai Yu, Huaijin Zhang   +6 more
wiley   +1 more source

Signal Processing for Novel Noise Radar Based on de-chirp and Delay Matching. [PDF]

Sensors (Basel)
Cao X, Zhang S, Tan K, Yang J, Lu X, Dai Z, Gu H.   +6 more
europepmc   +1 more source

Extending Carrier Diffusion via Interfacial Dielectric Shielding for Operationally Stable Perovskite/TOPCon Tandem Solar Cells

Advanced Science, EarlyView.
A high‐dielectric niobium oxide (NbOX) electron‐selective contact is introduced to modulate the perovskite/C60 interface in perovskite/silicon tandem solar cells. By shrinking the defect capture radius and chemically passivating Pb‐related defects, NbOX extends carrier diffusion length and optimizes energy‐level alignment, enabling both high efficiency
Wenfeng Liu, Zhiqin Ying, Huan Li, Xin Li, Haofan Ma, Yunyun Yu, Ziyu He, Rui Li, Meili Zhang, Yuheng Zeng, Luyao Zheng, Xi Yang, Jichun Ye   +12 more
wiley   +1 more source

2 km Uncompressed HD Video Wireless Transmission at 100 GHz Based on All-Optical Frequency Up- and Down-Conversion. [PDF]

Micromachines (Basel)
Gao S, Jiang Y, Li Z, Zhong Q, Zhu M, Zhang J.   +5 more
europepmc   +1 more source

Hierarchical Reconfigurable Metasurface Based on Scenario‐Guided Functional Modules and Programmable Core

Advanced Science, EarlyView.
This paper proposes a hierarchical reconfigurable metasurface architecture (HRMA) to achieve comprehensive electromagnetic parameter modulation and on‐demand polymorphic function switching. The reconfigurable metasurface is divided into a programmable core (PC) and scenario‐guided functional modules (FMs), exhibiting significant flexibility and ...
Lihao Zhu, Jiaqi Han, Zhe Zheng, Qiang Feng, Dexiao Xia, Xiangjin Ma, Yajie Mu, Guoliang Luo, Rui Li, Haixia Liu, Hao Xue, Long Li   +11 more
wiley   +1 more source

Non-Contact Measurement of Human Vital Signs in Dynamic Conditions Using Microwave Techniques: A Review. [PDF]

Sensors (Basel)
Ostrysz M, Szczepaniak Z, Sondej T.
europepmc   +1 more source

Thermally Programmable Two‐Port Non‐Hermitian Acoustic Metastructure for Broadband and Direction‐Dependent Absorption

Advanced Science, EarlyView.
A thermally programmable two‐port non‐Hermitian acoustic metastructure is presented, where temperature acts as a non‐geometric tuning variable. Thermal modulation reconfigures impedance matching and loss‐leakage coupling, enabling exceptional‐point driven, broadband, and direction‐dependent sound absorption without requiring geometric reconfiguration ...
Zichao Guo, Zhendong Li, Ziping Lei, Zirui Yang, Kexin Zeng, Zheng Fan, Zhonggang Wang   +6 more
wiley   +1 more source

320 GHz photonic-electronic analogue-to-digital converter (ADC) exploiting Kerr soliton microcombs. [PDF]

Light Sci Appl
Fang D, Drayss D, Peng H, Lihachev G, Füllner C, Kuzmin A, Marin-Palomo P, Matalla P, Kharel P, Wang RN, Riemensberger J, Zhang M, Witzens J, Scheytt JC, Freude W, Randel S, Kippenberg TJ, Koos C.   +17 more
europepmc   +1 more source