How To Use The Easyfix Quick Fastening Lug; Horn Gain And Space Attenuation - Chauvin Arnoux ORITEL ANC 100/15 Manual De Instrucciones

ORITEL CF 204A power supply unit for Gunn diode oscillator ................................... Please consult us
ORITEL IR 205 SWR indicator ............................................................................................. P01.2705.01
ORITEL RD 100 displacement sensor for measuring line ................................................... P01.2753.02
ORITEL ANC 100/15 (15 dB) horn antenna ........................................................................ P01.2753.04
ORITEL CGX 100/20 waveguide cross coupler ................................................................... P01.2753.05
ORITEL IRIS 20-30 (20 and 30 dB) coupling irises ............................................................. P01.2753.06
To use these components, refer to the corresponding operating manual.
3.2

How to use the EASYFIX quick fastening lug

See diagram § 7.2
Arrange the two components to be assembled, taking care to correctly place the centring studs
opposite the holes
Simultaneously tighten the two knurled knobs
3.3

Horn gain and space attenuation

The aim of the following manipulations is to determine the gain value of a transmission-reception assembly
formed by two identical horns.
These are: - measuring the horn's standing wave ratio
- determining the P
calculating the gain.
3.3.1 A summary of the theory on which the experiment is based
Antennas are radiating elements, meaning that they provide the transition between the waveguide and
the free space (transmission and, conversely, reception).
In the field of microwaves, the smallness of the wavelength enables a wide variety of radiating devices
to be made: horns, parabolic antennas, dipoles, helical antennas, etc.
In fact, they have certain similarities to optical devices: lenses, projectors, through which - as in microwave
technology - the purpose is to concentrate energy in a given direction.
Antenna gain
If P is the power emitted by a purely hypothetical antenna radiating uniformly in every direction (isotropic
0
antenna), the gain of a radiated power P
coordinates) is written as follows:
P (θ, φ)
(θ, φ)
G =
P
The gain enables the concentration of energy emitted (or received) in a given direction to be expressed.
An antenna's equivalent (or effective) area is also associated with it.
∑
(θ, φ) (θ, φ)
= G
For a hypothetical isotropic antenna, G
λ
∑
(θ, φ)
=
4 π
/P ratio of the powers received and transmitted by the horns and
r e
(1)
0
λ
(2)
4 π
(θ, φ)
2
(3)
antenna (θ and φ designating a direction in spherical
(θ, φ)
= 1 by definition, and therefore:
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