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Ref: 57-300

Banc d'étude des antennes 2.0 (USB)

remplace la référence 57-200

is a unique package of hardware modelling and software based measurement system that is suitable for teaching the principles of antenna operation, through to advanced antenna design. AntennaLab uses hardware modelling at frequencies of 650-4400MHz to demonstrate the theoretical principles and practical performance of a wide range of antenna types and systems. AntennaLab is fully supported by assignments and textbooks to cover a wide range of teaching and project work. AntennaLab is complete and requires no additional instrumentation or external power supplies. The system is pc-based, with all measurements for the hardware experimental work being performed by the PC. Signal levels, frequency response, azimuth and elevation plots, return loss and 3-D visualisations are available.
AntennaLab 57-300 is an integrated package of antenna modelling hardware a pc-based measurement system for teaching and demonstrating common antenna configurations at all levels of study. It can also be used as a design tool by those engaged in research and development of antenna systems.
AntennaLab is operated in conjunction with a pc and the whole system can easily be accommodated on a standard laboratory bench. The equipment comprises two towers, approximately 1 metre high, one of which contains a low-power generator controlled by a frequency synthesiser, and a motor/shaft encoder assembly to rotate the antenna under test. The antenna being investigated is mounted on a small platform on top of this tower.
The receiver tower contains a receiver controlled by a frequency synthesiser and produces a dc output representing the received signal intensity. A log periodic antenna is mounted on this tower and is not changed in normal use. The receiver and generator synthesisers are synchronised, the two tower assemblies being linked by a five-metre multi-way cable carrying both power and data. The 'generator' tower is linked to the pc.
A selection of components is supplied with the system to enable many of the common antenna types to be constructed.
The measurements are controlled and the results plotted by the pc. The unique and powerful software provides the test interface and provides high quality graphical displays. There are no user adjustments required on the equipment itself, although it is necessary to connect up the required RF configuration for specific measurements. The results are quantitative and, within the limits of environmental factors, are consistent with antenna theory. The assignments in the accompanying Espial software use the combination of hardware modelling and pc instrumentation to provide a powerful aid to understanding this important subject.
Features
Feedback Espial teaching software (supplied separately, 93-420 & 57-300-SW)
Integration of hardware and software
Models and tests real antennas
Hardware modelling between 650MHz and 4400MHz
PC based measurement and results
Rapid, graphic display of antenna characteristics
Bench-top operation
Low, safe power output
Automatic selection of reverse and forward coupler signals
Automatic self-calibration
USB interface
Espial Software Environment
AntennaLab requires 93-420 Espial Software and the 57-300-SW AntennaLab Course Software (supplied separately). Introductory information about AntennaLab's approach to the subject is followed by details of the available application windows:
Real time signal level monitor
Radiation pattern in 2D and 3D in polar and Cartesian formats
Signal level vs frequency graph window
Return loss vs frequency graph window
Additional guidance is given on the installation of the hardware and the formatting and configuration of the graphing applications. Espial Software products offer a more interactive alternative to the traditional assignment manuals. AntennaLab comes complete with a manual and two reference textbooks.
CURRICULUM COVERAGE
Assignments covered are:
Familiarisation
The Dipole in Free Space
Effects of the Surroundings
Two Sources
Ground Reflections
Monopoles
Phased Monopoles
Measuring Antenna
Input Impedance
Parasitic Elements
Multi-Element Yagi Arrays
Stacked and Bayed Yagi Arrays
The Log Periodic Antenna
The Horn Antenna
The Dish Antenna
Polar Plot Return Loss Plot
Multiple Polar Plots
Frequency Plot Multiple Frequency Plots
Signal amplitude bar graph
Multiple Polar Plots

Caractéristiques techniques :
Modelling Hardware

Operating frequency 650 - 4400MHz
Smallest frequency step 1MHz
Transmitter power
Maximum 10mW
Normal 1mW
Receiver bandwidth 10MHz
Receiver dynamic range 70dB
Receiver dB output precision 8-bit
Transmitter output impedance 50 ohms
Receiver input impedance 50 ohms
Receiver linearity ±1dB
Maximum frequency step rate 25 per second
Transmitter frequency accuracy ±100kHz
Maximum antenna rotation speed 90 degrees/second
Antenna position resolution 1 degree
Receiver input for 1dB compression 5mW
Transmitter output power variation over full frequency range 6dB
Transmitter mismatch capability Infinite
RF connection system SMA
Normal receiving antenna log periodic
Height of antenna towers 1 metre
Tower spacing 2 to 5 metres
Computer connection USB
Antenna characteristics measured

Foward gain
E & H plane polar plots
3dB beamwidth
Maximum side lobe
Front to back ratio
Polarization isolation
Return loss
All of these parameters are measured with respect to frequency.


En option:
Additionally required:
PC with Windows 7/8.1/10; 32bit or 64bit; USB interfac
Poids: 29 Kg