In this paper, topographic data for line-of-sight (LOS) communication link between Eket and Akwa Ibom state University are used to validate the frequency scaling factors for computing the radius of the Fresnel zone, Fresnel-Kirchoff diffraction parameter and the number of Fresnel zones that are partially or fully blocked by single knife edge obstruction in the signal path. The topographic data are obtained using Geocontext online topographic profile tool. In this paper, three microwave frequencies are considered, namely; 4 GHz for the C-band, 16 GHz for the Ku-band and 28 GHz for the Ka-band. The results confirmed that the frequency scaling factor between any two frequencies, f1 and f2 is 
for the Fresnel-Kirchoff diffraction parameter; 
for the radius of the Fresnel zone and 
for the number of Fresnel zones that are blocked by obstruction in the signal path. Consequently, if the value of any of the three parameters is known at frequency, f1, then the corresponding value of the same parameter at another frequency, f2 can be obtained by multiplying the parameter value at f1 with the frequency scaling factor for the parameter.
| Published in | Engineering Physics (Volume 1, Issue 2) |
| DOI | 10.11648/j.ep.20170102.11 |
| Page(s) | 33-39 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2017. Published by Science Publishing Group |
Fresnel Zone, Knife Edge Obstruction, Frequency Scaling Factor, Line-of-Sight (LOS) Communication, Topographic Profile
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APA Style
Wali Samuel, Constance Kalu, Ogungbemi Emmanuel Oluropo. (2017). Empirical Validation of Frequency Scaling Factor for Fresnel-Kirchoff Diffraction Parameter. Engineering Physics, 1(2), 33-39. https://doi.org/10.11648/j.ep.20170102.11
ACS Style
Wali Samuel; Constance Kalu; Ogungbemi Emmanuel Oluropo. Empirical Validation of Frequency Scaling Factor for Fresnel-Kirchoff Diffraction Parameter. Eng. Phys. 2017, 1(2), 33-39. doi: 10.11648/j.ep.20170102.11
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Download@article{10.11648/j.ep.20170102.11,
author = {Wali Samuel and Constance Kalu and Ogungbemi Emmanuel Oluropo},
title = {Empirical Validation of Frequency Scaling Factor for Fresnel-Kirchoff Diffraction Parameter},
journal = {Engineering Physics},
volume = {1},
number = {2},
pages = {33-39},
doi = {10.11648/j.ep.20170102.11},
url = {https://doi.org/10.11648/j.ep.20170102.11},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ep.20170102.11},
abstract = {In this paper, topographic data for line-of-sight (LOS) communication link between Eket and Akwa Ibom state University are used to validate the frequency scaling factors for computing the radius of the Fresnel zone, Fresnel-Kirchoff diffraction parameter and the number of Fresnel zones that are partially or fully blocked by single knife edge obstruction in the signal path. The topographic data are obtained using Geocontext online topographic profile tool. In this paper, three microwave frequencies are considered, namely; 4 GHz for the C-band, 16 GHz for the Ku-band and 28 GHz for the Ka-band. The results confirmed that the frequency scaling factor between any two frequencies, f1 and f2 is for the Fresnel-Kirchoff diffraction parameter; for the radius of the Fresnel zone and for the number of Fresnel zones that are blocked by obstruction in the signal path. Consequently, if the value of any of the three parameters is known at frequency, f1, then the corresponding value of the same parameter at another frequency, f2 can be obtained by multiplying the parameter value at f1 with the frequency scaling factor for the parameter.},
year = {2017}
}
TY - JOUR T1 - Empirical Validation of Frequency Scaling Factor for Fresnel-Kirchoff Diffraction Parameter AU - Wali Samuel AU - Constance Kalu AU - Ogungbemi Emmanuel Oluropo Y1 - 2017/02/04 PY - 2017 N1 - https://doi.org/10.11648/j.ep.20170102.11 DO - 10.11648/j.ep.20170102.11 T2 - Engineering Physics JF - Engineering Physics JO - Engineering Physics SP - 33 EP - 39 PB - Science Publishing Group SN - 2640-1029 UR - https://doi.org/10.11648/j.ep.20170102.11 AB - In this paper, topographic data for line-of-sight (LOS) communication link between Eket and Akwa Ibom state University are used to validate the frequency scaling factors for computing the radius of the Fresnel zone, Fresnel-Kirchoff diffraction parameter and the number of Fresnel zones that are partially or fully blocked by single knife edge obstruction in the signal path. The topographic data are obtained using Geocontext online topographic profile tool. In this paper, three microwave frequencies are considered, namely; 4 GHz for the C-band, 16 GHz for the Ku-band and 28 GHz for the Ka-band. The results confirmed that the frequency scaling factor between any two frequencies, f1 and f2 is for the Fresnel-Kirchoff diffraction parameter; for the radius of the Fresnel zone and for the number of Fresnel zones that are blocked by obstruction in the signal path. Consequently, if the value of any of the three parameters is known at frequency, f1, then the corresponding value of the same parameter at another frequency, f2 can be obtained by multiplying the parameter value at f1 with the frequency scaling factor for the parameter. VL - 1 IS - 2 ER -
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