Results 321 to 330 of about 1,709,207 (373)
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Review of Scientific Instruments, 1949
A microwave polarimeter is described which enables the determination of rotation of the plane of polarization of microwaves in the 3.2-cm band. The transmitter-analyzer utilizes klystron tube 723 A/B. The microwaves are fed into a horn which acts as a polarizing agent.
Alfred E. Schwaneke, Zaboj V. Harvalik
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A microwave polarimeter is described which enables the determination of rotation of the plane of polarization of microwaves in the 3.2-cm band. The transmitter-analyzer utilizes klystron tube 723 A/B. The microwaves are fed into a horn which acts as a polarizing agent.
Alfred E. Schwaneke, Zaboj V. Harvalik
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Absorption of microwaves in the microwave oven
The Physics Teacher, 2001A microwave oven is used to demonstrate that, in comparison to liquid water, both ice and liquid nitrogen are almost completely transparent to microwaves. The difference in transparency is also simply explained.
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Advanced Functional Materials, 2019
Multifunctionalization is the future development direction for microwave absorbing materials, but has not yet been explored. The effective integration of multiple functions into one material remains a huge challenge.
Ya Li +6 more
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Multifunctionalization is the future development direction for microwave absorbing materials, but has not yet been explored. The effective integration of multiple functions into one material remains a huge challenge.
Ya Li +6 more
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SiGe Microwave Phototransistors for Microwave-Photonics Applications
2020 IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium (BCICTS), 2020This paper gives an overview on the development of microwave phototransistors within SiGe Bipolar and BiCMOS technologies. The physics and design of SiGe/Si Heterojunction Bipolar Phototransistors (HPT) are covered. A comprehensive analysis of the photodetection mechanisms and its localization into the structure is provided.
Tegegne, Zerihun +8 more
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, 2005
Preface. Acknowledgments. Acronyms. 1 Introduction. 1.1 Definition of Metamaterials (MTMs) and Left-Handed (LH) MTMs. 1.2 Theoretical Speculation by Viktor Veselago. 1.3 Experimental Demonstration of Left-Handedness.
C. Caloz, T. Itoh
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Preface. Acknowledgments. Acronyms. 1 Introduction. 1.1 Definition of Metamaterials (MTMs) and Left-Handed (LH) MTMs. 1.2 Theoretical Speculation by Viktor Veselago. 1.3 Experimental Demonstration of Left-Handedness.
C. Caloz, T. Itoh
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Advances in Microwave Synthesis of Nanoporous Materials
Advances in Materials, 2021Usually, porous materials are synthesized by using conventional electric heating, which can be energy‐ and time‐consuming. Microwave heating is commonly used in many households to quickly heat food. Microwave ovens can also be used as powerful devices in
Sylwia Głowniak +3 more
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The Microwave Absorbing Phenomena Of Ferrite Microwave Absorber
[1993] Digests of International Magnetics Conference, 1993The complex permeability dispersions and the microwave absorbing phenomena are investigated in ferrite microwave absorbers. The complex permeability of hexagonal (Y- and Z-type) and spinel (NiZn ferrite and NiZnCo ferrite) ferrite microwave absorbers were measured in 200 MHz-16 GHz range.
Jae-Hee Oh, J.Y. Shin
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ACS Applied Materials and Interfaces, 2019
Lightweight and high-efficiency microwave attenuation are two major challenges in the exploration of carbon-based absorbers, which can be achieved simultaneously by manipulating their chemical composition, microstructure, or impedance matching.
Panbo Liu +5 more
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Lightweight and high-efficiency microwave attenuation are two major challenges in the exploration of carbon-based absorbers, which can be achieved simultaneously by manipulating their chemical composition, microstructure, or impedance matching.
Panbo Liu +5 more
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1999
Various uses of the microwave spectrum are discussed. The first realisation was communications across the Channel by British and French engineers in 1931. During the Second World War enormous effort was expended to harness microwaves for radar. The research work was often done with limited resources (a poem by one of the participants describes the ...
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Various uses of the microwave spectrum are discussed. The first realisation was communications across the Channel by British and French engineers in 1931. During the Second World War enormous effort was expended to harness microwaves for radar. The research work was often done with limited resources (a poem by one of the participants describes the ...
openaire +1 more source
Advanced Functional Materials, 2018
Absorbers with lightweight, low filler loading and broad absorption band are highly desirable for electromagnetic wave absorption field. Here, hollow Co1–xS microspheres constructed by nanosheets are fabricated via a facile synthetic method based on ...
Xiao-Juan Zhang +6 more
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Absorbers with lightweight, low filler loading and broad absorption band are highly desirable for electromagnetic wave absorption field. Here, hollow Co1–xS microspheres constructed by nanosheets are fabricated via a facile synthetic method based on ...
Xiao-Juan Zhang +6 more
semanticscholar +1 more source