Results 31 to 40 of about 61,579 (120)

n+ GaAs/AuGeNi-Au Thermocouple-Type RF MEMS Power Sensors Based on Dual Thermal Flow Paths in GaAs MMIC

Sensors, 2017
To achieve radio frequency (RF) power detection, gain control, and circuit protection, this paper presents n+ GaAs/AuGeNi-Au thermocouple-type RF microelectromechanical system (MEMS) power sensors based on dual thermal flow paths.
Zhiqiang Zhang, Xiaoping Liao
doaj   +1 more source

A High-Temperature and Wide-Permittivity Range Measurement System Based on Ridge Waveguide

Sensors
Potential applications of microwave energy, a developed form of clean energy, are diverse and extensive. To expand the applications of microwave heating in the metallurgical field, it is essential to obtain the permittivity of ores throughout the heating
Rui Xiong, Yuanhang Hu, Anqi Xia, Kama Huang, Liping Yan, Qian Chen   +5 more
doaj   +1 more source

MICROWAVE CONTACTLESS MEASUREMENT METHOD OF SUBSTANCES LEVEL

Доклады Белорусского государственного университета информатики и радиоэлектроники, 2019
The analysis and comparison of existing contactless methods of substance level measurement is carried out. Advantages and lacks of optical, ultrasonic and microwave measurement methods are considered in details.
V. V. Kazlyak, A. V. Gusinskiy, A. M. Kostrikin   +2 more
doaj  

Enhanced microwave-atom coupling via quadrupole transition-dressed Rydberg atoms

Frontiers in Physics
The power broadening of a coupling laser can be converted into two-photon detuning by electromagnetically induced transparency (EIT), resulting in a residual Doppler effect.
Yijie Du, Yijie Du, Nan Cong, Yao Liu, Ziyao Lyu, Jun He, Renfu Yang   +6 more
doaj   +1 more source

Recent Advances in the Design of Electro-Optic Sensors for Minimally Destructive Microwave Field Probing

Sensors, 2011
In this paper we review recent design methodologies for fully dielectric electro-optic sensors that have applications in non-destructive evaluation (NDE) of devices and materials that radiate, guide, or otherwise may be impacted by microwave fields.
John F. Whitaker, Dong-Joon Lee, Junyeon Kim, No-Weon Kang, Jun-Ho Choi   +4 more
doaj   +1 more source

Long-Term Arctic Snow/Ice Interface Temperature from Special Sensor for Microwave Imager Measurements

Remote Sensing, 2018
The Arctic sea ice region is the most visible area experiencing global warming-induced climate change. However, long-term measurements of climate-related variables have been limited to a small number of variables such as the sea ice concentration, extent,
Sang-Moo Lee, Byung-Ju Sohn, Christian D. Kummerow   +2 more
doaj   +1 more source

Robust Algorithms for Fitting Q-Factor in the Complex Domain

IEEE Access
This paper describes robust vector-fitting algorithms for determining the Q-factor and resonant frequency of spectrally-isolated resonances from frequency-swept S-parameter measurements for both one-port (reflection) and two-port (transmission) systems ...
Andrew P. Gregory, Peter D. Woolliams, Stephen M. Hanham   +2 more
doaj   +1 more source

Improved Permittivity Measurement for the Material With Arbitrary Thickness Based on NRW and Adaptivity of Propagation Constant

IET Science, Measurement & Technology
An improved Nicolson‐Ross‐Weir (NRW) transmission/reflection method with the algorithm of adapting propagation constant is proposed in this paper for the permittivity measurement of that material with arbitrary thickness.
Haidong Chen, Haitian Zhou, Xi Dai, Jieyao Yang, Huibing Chen, Shuyou Gan, Mu Tan, Wenquan Che   +7 more
doaj   +1 more source

Experimental measurements of radar signatures of large wind turbine

The Journal of Engineering, 2019
This study presents preliminary results on the signature of a large offshore wind turbine collected using an active S-band radar. The intensity fluctuations of this clutter signal in the range and Doppler domain are characterised, looking at their ...
Francesco Fioranelli, Jarez Patel, Colin Horne, Riccardo Palamà, Hugh Griffiths, Laith Danoon, Anthony Brown   +6 more
doaj   +1 more source