Results 81 to 90 of about 604,873 (284)

Performances of Microwave Photonic Notch Filter Based on Microring Resonator With Dual-Drive Modulator

IEEE Photonics Journal, 2019
A tunable microwave photonic notch filter with ultrahigh radio frequency (RF) rejection ratio is achieved by using a dual-drive Mach–Zender modulator and a microring resonator.
Pengfei Zheng, Hong Hong, Jing Li, Guohua Hu, Binfeng Yun, Yiping Cui   +5 more
doaj   +1 more source

Relative Permittivity Measurement of Microliter Volume Liquid Samples through Microwave Filters. [PDF]

Sensors (Basel), 2023
Yasin A, Gogosh N, Sohail SI, Abbas SM, Shafique MF, Mahmoud A.   +5 more
europepmc   +1 more source

Unraveling Hierarchical B-Site Ordering: Mechanism of Microwave Dielectric Enhancement in Complex Perovskite Oxide Ceramics. [PDF]

Adv Sci (Weinh)
This study maps out the hierarchical ordering in 1:2 B‐site complex perovskite ceramics using a comprehensive multiscale characterization route. It turns out that intradomain strain, oxygen vacancies, and Mg disorder within the ordered domains act as strong phonon scatterers.
Fu Q, Gu H, Gao H, Ma P, Chen X, Xing J, Zheng Q.   +6 more
europepmc   +2 more sources

Astrocytic LMP2 Coordinates NF‐κB and TGF‐β1/Smad3 Signaling to Drive Neuroinflammation after Cerebral Ischemia/Reperfusion

Advanced Science, EarlyView.
ABSTRACT Astrocyte reactivity critically shapes neuroinflammatory outcomes after ischemic stroke, yet the upstream regulators governing astrocyte state transitions remain incompletely defined. Here, we identify the immunoproteasome subunit low molecular weight protein 2 (LMP2) as an important modulator of astrocyte functional remodeling following ...
Yanguang Mao, Rulan Ma, Zejing Lin, Huiying Zhao, Yuexian Liu, Yonghe Su, Xu Zhang, Xingyong Chen   +7 more
wiley   +1 more source

Compact wide single‐/dual‐band bandpass filter with equal inductance configuration in thin film IPD technology

Electronics Letters
Here, based on thin film integrated passive device (TF‐IPD) technology, compact ultra‐wideband (UWB) bandpass filter (BPF) and dual‐band bandpass filter (DBBPF) with equal inductance configuration are proposed.
Zhi‐Hao Liu, Bao‐Guang Liu, Chong‐Hu Cheng, Yong Cheng   +3 more
doaj   +1 more source

Advances and Perspectives in Graphene‐Based Quantum Dots Enabled Neuromorphic Devices

Advanced Science, EarlyView.
Graphene‐based QDs are zero‐dimensional carbon nanomaterials with pronounced quantum confinement and tunable electronic structures. Herein, we summarize their synthesis strategies and functionalization methods, and highlight their functional roles and operating mechanisms in devices, as well as recent advances in neuromorphic electronics. We anticipate
Yulin Zhen, Wei Zeng, Zherui Zhao, JiYu Zhao, Ziyan Huang, Zhuo Chen, Kui Zhou, Guanglong Ding, Su‐Ting Han, Ye Zhou   +9 more
wiley   +1 more source

Statistical modeling of manufacturing uncertainties for microstrip filters

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
This work presents a technique to characterize the errors that occur in the process of manufacturing into electromagnetic simulations of microwave devices. The procedure combines the unscented transform (UT) with simulations.
Abraham E. Ortega P., Leonardo R.A.X. de Menezes, Humberto Abdalla Jr.   +2 more
doaj   +1 more source

Efficient enhancements in spectral domain method to speed up open planar circuit analysis [PDF]

, 1998
The spectral domain method is a very fast and powerful technique to analyse planar microwave circuits. Available techniques for simulating the excitation of open planar microwave circuits are not very effective at relatively low frequencies.
Railton, CJ, Balik, HH
core   +1 more source

Lattice Distortion‐Driven Metal Exsolution in Perovskite Oxides

Advanced Science, EarlyView.
This study elucidates the mechanism of lattice distortion‐driven exsolution through a combination of computational simulations and experimental approaches. Lattice distortion facilitates the formation of oxygen vacancies and subsequent metal segregation, thereby enhancing the exsolution behavior.
Yo Han Kim, Uchan Jeon, Hyeongwon Jeong, Bo‐Ram Won, Jeong Woo Han, Jae‐ha Myung   +5 more
wiley   +1 more source

Ni doped carbon-based composites derived from waste cigarette polypropylene filter rod with electromagnetic wave absorption performance

Materials Research Express
Polypropylene is widely used in the plastics industry, especially in the tobacco industry, served as cigarette filters to reduce tar and harm. However, it’s difficult to degrade these polypropylene plastics and suitable methods for recycling and reuse is
Guangyuan Yang, Jing Che, Xiaokang Zhao, Xinxin Li, Sanwen Peng, Heng Yang, Bin Zhang, Jiuxiao Sun   +7 more
doaj   +1 more source