Radwin WinLink 1000 Series User Manual

Antenna Height Appendix B
WinLink™ 1000 User Manual Release 1.9 B-3
Antenna Height
The recommended antenna height required for line of sight is calculated as
the sum the Fresnel zone height and the boresight height. See About the
Fresnel Zone below. Using the notation of Figure B-1 below, splitting
ExpectedRange into d
1
+ d
2
, the Fresnel zone height at distance d
1
from
the left hand antenna, is given by
For the most conservative setting, we take the mid-point between the
antennas, setting
which gives
simplifying to .
The
boresight clearance height is calculated
as:
where .
About the Fresnel Zone
The Fresnel zone (pronounced "frA-nel", with a silent “s”) is an elliptically
shaped conical zone of electromagnetic energy that propagates from the
transmitting antenna to the receiving antenna. It is always widest in the
middle of the path between the two antennas.
Availability
16–10
7–
× Cfactor× frequency
GHz
× RequiredRange
KM
()
3
×
10
ExpectedFadeM inarg–
10
------------------------------------------------------------
×
=
0.6
300
frequency
GHz
-----------------------------------
d
1
d
2
××
d
1
d
2
+
-----------------------------------------------------------×
d
1
d
2
ExpectedRange
2
-----------------------------------------
==
0.6
300
frequency
GHz
-----------------------------------
ExpectedRange
2
-----------------------------------------
2
×
ExpectedRange
2
-----------------------------------------
ExpectedRange
2
-----------------------------------------
+
--------------------------------------------------------------------------------------------×
0.52
ExpectedRange
frequency
GHz
-----------------------------------------×
R
2
Mean
ExpectedRange
2
-----------------------------------------
2
+ R
Mean
–
R
Mean
6367.4425Km=

Radwin WinLink 1000 Series Specifications

General

Brand	Radwin
Model	WinLink 1000 Series
Category	Network Hardware
Language	English