Converters for the TE 11 Mode Generation from TM 01 Vircator at 4 GHz

2001 ◽  
Vol 18 (9) ◽  
pp. 1285-1287 ◽  
Author(s):  
Ling Gen-Shen ◽  
Zhou Jin-Juan
Keyword(s):  
Mode Generation

scholarly journals A Grating Coupler Design for Optical Vortex Mode Generation in Rectangular Waveguides

2021 ◽  
pp. 1-1
Author(s):  
Denis Fatkhiev ◽  
Vladimir S. Lyubopytov ◽  
Ruslan Kutluyarov ◽  
Elizaveta P. Grakhova ◽  
Albert K. Sultanov
Keyword(s):  
Optical Vortex ◽  
Grating Coupler ◽  
Rectangular Waveguides ◽  
Mode Generation

scholarly journals Beam shaping to enhance zero group velocity Lamb mode generation in a composite plate and nondestructive testing application

2017 ◽  
Vol 85 ◽  
pp. 13-19 ◽  
Author(s):  
Frédéric Faëse ◽  
Samuel Raetz ◽  
Nikolay Chigarev ◽  
Charfeddine Mechri ◽  
James Blondeau ◽  
...  
Keyword(s):  
Nondestructive Testing ◽  
Group Velocity ◽  
Composite Plate ◽  
Beam Shaping ◽  
Zero Group ◽  
Mode Generation ◽  
Lamb Mode

scholarly journals Microwave Orbital Angular Momentum Mode Generation and Multiplexing Using a Waveguide Butler Matrix

ETRI Journal ◽  
2017 ◽  
Vol 39 (3) ◽  
pp. 336-344 ◽  
Author(s):  
Wangjoo Lee ◽  
Ju Yeon Hong ◽  
Min Soo Kang ◽  
Bong Su Kim ◽  
Kwang Seon Kim ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Butler Matrix ◽  
Momentum Mode ◽  
Mode Generation

Study of Biomaterials Acoustic Signature Using Annular Lenses

2011 ◽  
Vol 324 ◽  
pp. 493-496
Author(s):  
Samia Bouhedja ◽  
F. Hamdi
Keyword(s):  
Porous Alumina ◽  
Quantitative Investigation ◽  
Materials Properties ◽  
Acoustic Signatures ◽  
Acoustic Signature ◽  
Non Destructive ◽  
Lens Center ◽  
Rayleigh Mode ◽  
Mode Generation

In this work, we study the microstructure of porous alumina Al2O3 through the acoustic signature behavior V(z). This function depends on the low porosity when annular lenses conditions at an operating frequency of 1 GHz are used. In non destructive control, this quantitative investigation which allows the determination of mechanical materials properties is of a great importance in the measurement of the surface waves attenuation in this type of biomaterials. Hence, we have numerically simulated the porous alumina acoustic signatures through variable occultation of generating rays at the lens center, in order to quantify the occultation limiting angle. Consequently, the evaluation of the equivalent Rayleigh velocity using the fast Fourier transform (F.F.T) spectra was achieved thanks to the suppression of the Rayleigh mode generation.

A Theoretically Based Valve Noise Prediction Method for Compressible Fluids

1986 ◽  
Vol 108 (3) ◽  
pp. 329-338 ◽  
Author(s):  
G. Reethof ◽  
W. C. Ward
Keyword(s):  
Transmission Loss ◽  
Prediction Method ◽  
Low Noise ◽  
Compressible Fluids ◽  
Noise Prediction ◽  
Duct Acoustics ◽  
Proper Design ◽  
Predicted Values ◽  
Mode Generation ◽  
Wide Pressure

Noise generated by control valves in power generation, chemical and petrochemical plants must be predictable so that proper design measures can be taken to conform to OSHA’s noise regulation. Currently available noise prediction methods are empirically based and not sufficiently accurate. The method proposed is based on jet noise theory for both subcritical and choked conditions, duct acoustics theory in terms of higher order mode generation and propagation, and the theory of acoustics-structure interaction in the development of the transmission loss values for the pipe. One third octave values are calculated over the audio spectrum by incorporating spectral aspects of noise generation, propagation, transmission, and radiation. The predicted values of noise for several size cage globe valves over wide pressure ranges compare well with measured results by two prominent valve manufacturers. The method, at present, is restricted to conventional valve styles, as opposed to the special low noise valve types with their very complicated orificial elements.

scholarly journals High frequency mode generation by toroidal Alfvén eigenmodes

2019 ◽  
Vol 26 (7) ◽  
pp. 074501
Author(s):  
Shizhao Wei ◽  
Peiwan Shi ◽  
Liming Yu ◽  
Wei Chen ◽  
Ningfei Chen ◽  
...  
Keyword(s):  
High Frequency ◽  
Frequency Mode ◽  
High Frequency Mode ◽  
Alfven Eigenmodes ◽  
Mode Generation

Single-longitudinal-mode generation in a Ho: YLF ring laser with double corner cubes resonator

2018 ◽  
Vol 92 ◽  
pp. 367-371 ◽  
Author(s):  
Jing Wu ◽  
Yunpeng Wang ◽  
Tongyu Dai ◽  
Youlun Ju ◽  
Baoquan Yao ◽  
...  
Keyword(s):  
Ring Laser ◽  
Longitudinal Mode ◽  
Single Longitudinal Mode ◽  
Mode Generation ◽  
Corner Cubes
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