Results 81 to 90 of about 67,297 (277)

NEW WAVEGUIDE METHOD FOR DIELECTRIC PARAMETER MEASUREMENT

Известия высших учебных заведений России: Радиоэлектроника, 2018
Perfect knowledge of dielectric parameters is necessary for its application in various devices. In spite of the whole range of measurement techniques, their practical implementation in the microwave frequency band runs into some difficulties.
Andrey D. Grigoriev
doaj   +1 more source

Food Security Sensing System Using a Waveguide Antenna Microwave Imaging through an Example of an Egg

Sensors, 2020
In this paper, we present a form of food security sensing using a waveguide antenna microwave imaging system through an example of an egg. A waveguide antenna system with a frequency range of 7−13 GHz and a maximum gain of 17.37 dBi was proposed ...
Tzu-Chun Tai, Hung-Wei Wu, Cheng-Yuan Hung, Yeong-Her Wang   +3 more
doaj   +1 more source

Dielectric-waveguide discontinuities

Electronics Letters, 1972
The discontinuity between two planar dielectric waveguides is examined on the basis of an integral-equation formulation.
G.A. Hockham, A.B. Sharpe
openaire   +1 more source

Aperture excited dielectric antennas [PDF]

The results of a comprehensive experimental and theoretical study of the effect of placing dielectric objects over the aperture of waveguide antennas are presented.
Chatterjee, J. S., Crosswell, W. F., Mason, V. B., Tai, C. T.   +3 more
core   +1 more source

Strongly anisotropic media: the THz perspectives of left-handed materials

, 2005
We demonstrate that non-magnetic ($\mu \equiv 1$) left-handed materials can be effectively used for waveguide imaging systems. We also propose a specific THz realization of the non-magnetic left-handed material based on homogeneous, naturally-occurring ...
Agranovich VM, Edelman VS, Friedman AN, Kittel C, Landau LD, Pendry JB, Pendry JB, Pendry JB, Podolskiy VA, Podolskiy VA, Podolskiy VA, Reneker DH, Shadrivov IV, Yen TY   +13 more
core   +1 more source

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source

Drive Bunch Train for the Dielectric Trojan Horse Experiment at the Argonne Wakefield Accelerator

Instruments
The recently demonstrated concept of the plasma photocathode, whereby a high-brightness bunch is initialized by laser ionization within a plasma wakefield acceleration bubble, is informally referred to as Trojan Horse wakefield acceleration. In a similar
Gerard Andonian, Nathan Burger, Nathan Cook, Scott Doran, Tara Hodgetts, Seongyeol Kim, Gwanghui Ha, Wanming Liu, Walter Lynn, Nathan Majernik, John Power, Alexey Pronikov, James Rosenzweig, Eric Wisniewski   +13 more
doaj   +1 more source

Phenomenon of Electromagnetic Field Resonance in Metal and Dielectric Gratings and Its Possible Practical Applications

Condensed Matter, 2020
Calculations of the field distribution in the structure of the dielectric substrate/buffer layer/volume phase grating/analyzed medium were performed.
Stefano Bellucci, Andrii Bendziak, Oleksandr Vernyhor, Volodymyr M. Fitio   +3 more
doaj   +1 more source

Microstrip Patch Antennas Fed by Substrate Integrated Waveguide [PDF]

, 2013
Dizertační práce je zaměřena na výzkum mikropáskových flíčkových antén a anténních řad napájených vlnovodem integrovaným do substrátu (SIW). Využitím vlnovodu integrovaného do substrátu pro napájení mikropáskové flíčkové antény dochází ke kombinaci ...
Mikulášek, Tomáš
core  

MXene‐Coated 3D Printed Horn Antennas for Ku Frequency Band

Advanced Materials Technologies, EarlyView.
An additive manufacturing approach to 3D printing horn antennas and coating them with Ti3C2Tx MXene is proposed. Rapid fabrication of lightweight, high‐performance antennas operating in the Ku‐band (12.4–18 GHz) has been demonstrated. The MXene‐coated antennas exhibit comparable electromagnetic performance to conventional, costly aluminum ones, with ...
Zahra Sarpanah Sourkouhi, Jamal Alhourani, Yury Gogotsi, Mohammad H. Zarifi   +3 more
wiley   +1 more source