Title :
The technologies for reducing quiet zone level of anechoic chamber
Author :
Song, DongAn ; Fang, Chonghua ; Zhang, Qi ; Wen, Ding E. ; Shi, XinYang
Author_Institution :
Dept. of Electron. & Inf. Eng., Huazhong Univ. of Sci. & Technol., Wuhan, China
Abstract :
In designing of anechoic chamber with higher quality, when requirements of quiet zone index are higher, it must use the geometrical theory of diffraction instead of the geometrical optics for accuracy. The utilities of the theory in design have been discussed in this paper. Besides, in analysis of reflectivity versus incident angle of absorbing materials, it´s used to use linear interpolating method and results in considerable error. In the present paper, new relationship between reflectivity and incident angle of absorbing materials has been derived from the theory of electromagnetic field. It has been demonstrated that new relationship can eliminate the error.
Keywords :
anechoic chambers (electromagnetic); geometrical theory of diffraction; interpolation; anechoic chamber; geometrical optics; geometrical theory of diffraction; incident angle; linear interpolating method; quiet zone level reduction; reflectivity analysis; theory of electromagnetic field; anechoic chamber; geometrical theory of diffraction; quiet zone index; reflectivity;
Conference_Titel :
Signals Systems and Electronics (ISSSE), 2010 International Symposium on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-6352-7
DOI :
10.1109/ISSSE.2010.5607028