A transimpedance amplifier for excess noise measurements of high junction capacitance avalanche photodiodes

2012 ◽  
Vol 23 (12) ◽  
pp. 125901 ◽  
Author(s):  
James E Green ◽  
John P R David ◽  
Richard C Tozer
2006 ◽  
Vol 17 (7) ◽  
pp. 1941-1946 ◽  
Author(s):  
K S Lau ◽  
C H Tan ◽  
B K Ng ◽  
K F Li ◽  
R C Tozer ◽  
...  

2017 ◽  
Vol 29 (8) ◽  
pp. 671-674 ◽  
Author(s):  
Junjie Tu ◽  
Yanli Zhao ◽  
Ke Wen ◽  
Qian Li ◽  
Yuan Li

2018 ◽  
Vol 57 (04) ◽  
pp. 1 ◽  
Author(s):  
Tomislav Jukić ◽  
Paul Brandl ◽  
Horst Zimmermann

1970 ◽  
Vol 9 (10) ◽  
pp. 1286-1287 ◽  
Author(s):  
Takeo Igo ◽  
Yoshio Toyoshima

Author(s):  
Olga Kopytenkova ◽  
Dmitriy Kurepin ◽  
Ekaterina Vereshchagina

Objective: Аssessment of acoustic screens effectiveness for protection residential areas when transportation minerals by rail. Methods: The experiment, simulation of acoustic environment. Results: Оne of the main problems of big cities is protection of population from excessive noise. To assess the acoustic screens effectiveness for protection residential areas when transportation minerals by rail were carried out noise measurements at the station Pontoon. The obtained measurement data show that the excess noise above the standard values. Therefore, to reduce noise it is necessary to conduct anti-noise measures. One of the most common means of reducing the noise of rail transport, is the use of acoustic screens. In the work carried out simulation of an acoustic screen using the program «Acoustics» at the following reference conditions: acoustic screen with a height of 5 m were installed on the site along houses № 13–16, 18, 19 A. Titenko Str (railway station Pontoon); design points were taken at a distance of not less than 1 m from the facade of buildings. The obtained simulation results show that normative values are reached only at the height of the calculation points is up to 5 m. With increasing elevation there is growing noise beyond the maximum permissible level. Research shows that the acoustic screen would be effective only at the level of 1–2 floors of the building. Low screen efficiency with increasing altitude is due to the missing in the sound area of the shadow calculated points located above 5 m. Practical importance: Revision of existing noise regulations of the railway transport in the direction of increasing the maximum allowable level by using amendments, can reduce complaints of noise from rail freight transport (in particular carrying solid minerals).


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