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Information 2017, 8(2), 50; doi:10.3390/info8020050

The Diffraction Research of Cylindrical Block Effect Based on Indoor 45 GHz Millimeter Wave Measurements

Department of Electronic and Communication Engineering, North China Electric Power University, Baoding 071003, China
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Author to whom correspondence should be addressed.
Academic Editors: Lei Chen, Wenjia Li and Rami J. Haddad
Received: 3 April 2017 / Revised: 24 April 2017 / Accepted: 27 April 2017 / Published: 2 May 2017
View Full-Text   |   Download PDF [2666 KB, uploaded 2 May 2017]   |  

Abstract

In this paper, four kinds of block diffraction models were proposed on the basis of the uniform geometrical theory of diffraction, and these models were validated by experiments with 45 GHz millimeter wave in the laboratory. The results are in agreement with the theoretical analysis. Some errors exist in the measurement results because of the unsatisfactory experimental environment. Single conducting cylindrical block measurement error was less than 0.5 dB, and single man block measurement error in the school laboratory was less than 1 dB, while in the factory laboratory environment, the peak to peak error reached 1.6 dB. Human body block attenuation was about 5.9–9.2 dB lower than that of the single conducting cylinder. A human body and a conducting cylinder were used together as a block in model (c) and model (d), but the positions of the cylinder in the two models were different. The measurement results showed that the attenuation of model (d) is about 3 dB higher than that of model (c). View Full-Text
Keywords: cylindrical block; 45 GHz millimeter wave; uniform geometrical diffraction model; communication measurement cylindrical block; 45 GHz millimeter wave; uniform geometrical diffraction model; communication measurement
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Li, X.; Li, Y.; Li, B. The Diffraction Research of Cylindrical Block Effect Based on Indoor 45 GHz Millimeter Wave Measurements. Information 2017, 8, 50.

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