Determination of Single Knife Edge Equivalent Parameters for Triple Knife Edge Diffraction Loss by Giovanelli Method
International Journal of Information and Communication Sciences
Volume 2, Issue 1, February 2017, Pages: 10-14
Received: Jan. 1, 2017; Accepted: Feb. 9, 2017; Published: Apr. 22, 2017
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Ezenugu Isaac A., Department of Electrical/Electronic Engineering, Imo State University, Owerri, Nigeria
Ikechukwu H. Ezeh, Department of Electrical/Electronic Engineering, Imo State University, Owerri, Nigeria
Swinton C. Nwokonko, Department of Electrical/Electronic Engineering, Imo State University, Owerri, Nigeria
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In this paper, the computation of triple knife edge diffraction loss by Giovanelli multiple knife edge diffraction loss method is presented for a 10 GHz Ku-band microwave link. Also, the computation of equivalent single knife edge obstruction that will replace the triple obstruction by giving the same diffraction loss as the dual obstructions is presented. The results shows that for the triple obstructions (M1, M2 and M3) the total diffraction loss is 59.5095778 dB as computed by the Giovanelli method. The individual diffraction loss from obstructions M1, M2 and M3 are 13.3856983 dB, 29.59291 dB and 16.5309693 dB respectively. Furthermore, a single knife edge obstruction located at the middle of the link (dt = dr = 4475m) and with LOS clearance height of 1237.591 m will be give the same diffraction loss as the three knife edge obstructions M1, M2 and M3. Essentially, the line of sight clearance height of the equivalent single knife edge obstruction are much more than the sum of the line of sight clearance height of the three original obstructions.
Diffraction Parameter, Diffraction Loss, Knife Edge obstruction, Multiple Knife Edge Obstruction, Equivalent Single Knife Edge Obstruction, Giovanelli Method
To cite this article
Ezenugu Isaac A., Ikechukwu H. Ezeh, Swinton C. Nwokonko, Determination of Single Knife Edge Equivalent Parameters for Triple Knife Edge Diffraction Loss by Giovanelli Method, International Journal of Information and Communication Sciences. Vol. 2, No. 1, 2017, pp. 10-14. doi: 10.11648/j.ijics.20170201.12
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This article 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.
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