Results 11 to 20 of about 430,501 (291)

Dielectric resonator bandstop filters [PDF]

, 2011
Dielectric resonators have been widely employed in wireless and satellite communication systems due to their inherently large Q allowing them to fashion low loss and narrow bandwidth filters.
Chan, Richard Kayip
core   +6 more sources

Dielectric resonators and filters for cellular base-stations [PDF]

, 2003
The investigation into three types of dielectric resonators for use in base-station filtering applications is presented. The triple-mode cubic TE016 resonator is shown to have good performance for high Q applications.
Walker, Vanessa Evelyne Guillemette
core   +6 more sources

Boosting the Humidity Performances of Na_0.5Bi_xTiO₃ by Tuning Bi Content

Nanomaterials, 2022
In the field of humidity sensors, a major challenge is how to improve the sensing performance of existing materials. Based on our previous work on Na0.5Bi0.5TiO3, a facile strategy of tuning the Bi content in the material was proposed to improve its ...
Xiaoqi Xuan, Li Li, Tiantian Li, Jingsong Wang, Yi Yu, Chunchang Wang   +5 more
doaj   +1 more source

A Review of Cobalt-Containing Nanomaterials, Carbon Nanomaterials and Their Composites in Preparation Methods and Application

Nanomaterials, 2022
With the increasing demand for sustainable and green energy, electric energy storage technologies have received enough attention and extensive research.
Hongfeng Chen, Wei Wang, Lin Yang, Liang Dong, Dechen Wang, Xinkai Xu, Dijia Wang, Jingchun Huang, Mengge Lv, Haiwang Wang   +9 more
doaj   +1 more source

Humidity Sensitivity Behavior of CH₃NH₃PbI₃ Perovskite

Nanomaterials, 2022
The CH3NH3PbI3 (MAPbI3) powders were ground by PbI2 and CH3NH3I prepared by ice bath method. The humidity sensitive properties of an impedance-type sensor based on MAPbI3 materials were systematically studied.
Xuefeng Zhao, Yuting Sun, Shuyu Liu, Gaifang Chen, Pengfei Chen, Jinsong Wang, Wenjun Cao, Chunchang Wang   +7 more
doaj   +1 more source

Greatly enhanced permittivity in BaTiO3-epoxy dielectric composites with improved connectivity of ceramic phase

Journal of Materiomics, 2021
BaTiO3-epoxy dielectric composites were prepared by curing the liquid epoxy monomer that infiltrated into the partially-sintered BaTiO3 porous ceramics.
Meng Cao, Lei Li, Wen Bin Hong, Shu Ya Wu, Xiang Ming Chen   +4 more
doaj   +1 more source

Humidity Sensing Properties of (In+Nb) Doped HfO₂ Ceramics

Nanomaterials, 2023
(In+Nb) co-doped HfO2 ceramics, Hf1-x(In0.5Nb0.5)xO2 (x = 0, 0.005, 0.05, and 0.1), were prepared via a solid-state reaction method. Dielectric measurements reveal that the environmental moisture has an obvious influence on the dielectric properties of ...
Jiahao Yao, Jingsong Wang, Wenjun Cao, Li Li, Mingxiang Luo, Chunchang Wang   +5 more
doaj   +1 more source

A Review on the Application of Cobalt-Based Nanomaterials in Supercapacitors

Nanomaterials, 2022
Among many electrode materials, cobalt-based nanomaterials are widely used in supercapacitors because of their high natural abundance, good electrical conductivity, and high specific capacitance.
Lin Yang, Qinghan Zhu, Ke Yang, Xinkai Xu, Jingchun Huang, Hongfeng Chen, Haiwang Wang   +6 more
doaj   +1 more source

Diffraction by an acoustically penetrable or an electromagnetically dielectric half plane II [PDF]

, 1989
The present work gives a mathematical model for an acoustically penetrable or electromagnetically dielectric half plane. An approximate boundary condition is derived which depends on the thickness of, and the material constants which constitutes, the ...
Rawlins, A D
core   +6 more sources

Room-temperature-densified H3BO3 microwave dielectric ceramics with ultra-low permittivity and ultra-high Qf value

Journal of Materiomics, 2020
With the rapid development of mobile communication technology towards 5G and 6G, the microwave dielectric materials with ultra-low permittivity and ultra-high Qf value are urgently demanded.
Wen Bin Hong, Lei Li, Han Yan, Shu Ya Wu, Hang Sheng Yang, Xiang Ming Chen   +5 more
doaj   +1 more source