Model ATS20 Antenna Training Lab has been designed
to provide useful tools for hands on experimentation and
teaching of various commonly used antennas in VHFUHF-
Microwave band in the laboratory for students of
all levels. It can be used in stand-alone mode as well as
be interfaced with a computer via RS232.
The system consists of a set of two tripods – one for
mounting the transmitting antenna and another stepper
motor controlled antenna positioning tripod for mounting
the receiving antenna, 30 different types of antennas,
PLL synthesized Digital RF Transmitter, PLL
synthesized Digital RF Receiver & Stepper Controller
and all the necessary cables and accessories.
* 30 different types of adjustable Antennas like
Log Spiral, Batwing, Stacked Yagi, Helix, Quad,
Slot, Log periodic, Discone, Biconical, GPS
Patch, Parabolic dish etc. are offered
* User selected variable transmitter & receiver
frequencies and adjustable antenna lengths to
cover wide frequency range for variety of
experiments
* PLL stabilized antenna transmitter and
receiver operating in the frequency range of
5-2000 MHz with 50 KHz step size for full range
testing and modeling of antennas.
* Rs232 interface with polar plotting software
with log, linear cartesian and polar plots, Vi, Vr &
VSWR plots, Multiple pattern overlay, Double
cursor measurement, Zoom, Colour editing,
1000 location editor, Absolute/Relative
measurement , 3dB/10dB beamwidth
measurement
Frequency range: 5-2000 MHz PLL synthesized in
3 ranges
Step size : 0.05, 0.1, 0.25,0.5, 1 & 10 MHz
Accuracy : 0.01%
Display : 16X2 Backlit LCD
Controls : Menu, Enter, Escape, Up &
Down buttons.
Memory : 1000 individual frequencies can
be stored/recalled
Modulation FM : Internal 1KHz/ External Micro
phone
RF Level : 110 dBuV max.
Level Accuracy : +/- 3 dB
Attenuator : 40dB (external)
Output Z : 50 ohms
Auto mode : Tracking operation with receiver
Power Supply : 220V AC + 10%
Frequency range: 5-2000 MHz PLL synthesized
in 3 ranges
Step size : 0.05, 0.1, 0.25, 0.5, 1 & 10 MHz
Accuracy : 0.01%
Display : 16X2 Backlit LCD
Controls : Menu, Enter, Escape, Up &
Down buttons.
Memory : 1000 individual frequencies &
levels can be stored/recalled
Measurements : RF level measurement in dBuV
with 0.1dB resolution
Technical specifications:
Level Accuracy : +/- 3 dB
Dynamic range : 110 dB (70dB logarithmic +
40dB attenuator)
Input Z : 50 ohm
Speaker : Inbuilt for Audio output
RS232 interface: Easy connectivity to PC for polar
plotting using supplied software
Auto mode : Data logging for antenna
bandwidth & polar plots for
interfacing with transmitter &
stepper.
Power Supply : 220V AC + 10%
Stepper Motor Controller Unit
Display : 16X2 backlit LCD for angle
Rotation : 0-359 degrees.
Controls : Menu, Enter, Escape, Up &
Down buttons
Angular steps : User selectable steps of 1,5,10,
45 degrees
Memory : 1000 memories for storing
angular positions for quick recall
Auto mode : Automatic rotation with interface
to receiver
Indication : Beep indication on reaching the
selected position.
Mode : Clockwise/Counterclockwise
rotation, Fast Slow modes, Reset
to zero degree
Power Supply : 220V AC + 10%
Antenna Types
1) Monopole 2) Dipole X2
3) Folded Dipole 4) Crossed Dipole LHCP
5) Crossed Dipole RHCP 6) Yagi(3el)
7) Yagi (4el) 8) Biconical
9) Discone 10) Log Periodic
11) Sleeve 12) Slot
13) End fire 14) Broad side
15) Whip 16) Helix LHCP
17) Helix RHCP 18) Square Loop
19) Quad 20) Spiral
21) V antenna 22) Patch
23) Parabolic Reflector24) Ground plane with
reflector & director
25) Collinear 26) L/4 Phase array
27) Blade 28) Conical Horn
29) Batwing 30) Stacked Yagi
Software:
log, linear cartesian and polar plots, Vi, Vr & VSWR
plots, Multiple pattern overlay, Double cursor, Zoom,
Colour editing, 1000 location editor, Absolute/Relative,
3dB/10dB beam-width, Gain, Front to back, Side lobe
level and position, Plot rotate, File- edit, save, get,
RS232 interface with polar plotting withDirectional Coupler
Directional Coupler is provided with 0.005 to 2 GHz
frequency response and 20dB directivity for antenna
forward & reverse power & VSWR measurements.
Accessories
1) Adjustable Non-conductive AZ-EL tripod for
mounting transmitter Antenna.
2) Stepper motor controlled adjustable nonconducting
AZ-EL tripod for rotation of receiving
antenna.
3) Condenser microphone
4) All necessary connectors & Teflon RF cables.
5) Students activity manual, Teachers reference
Manual & Theory manual
6) Software CD
7) Antenna Kit
8) Sniffer Probe
Areas of experimentation and scope of study
·
To prove the inverse square law of propagation.·
and a directional antenna.
To plot the radiation pattern of an Omni-directional·
Vertical, Horizontal and Circularly polarized
antennas.
To study the phenomenon of Polarization for·
linear & circular antennas
To study polarization discrimination between·
non-resonant antenna and hence calculate the
resonant frequency and estimate the VSWR of a
resonant antenna.
To study the difference between a resonant and·
radiation patterns of an antenna are equal and
hence confirm the reciprocity of antenna.
To demonstrate that the transmitting and receiving·
element of an antenna.
To study the current distribution along the length of·
Study of antenna parameters:·
Cartesian Plots of an antenna.
To plot the radiation pattern E & H Plane - Polar &·
gain, beam width (Half Power/10dB), front to back
ratio, plane of polarization, side lobe level and its
angular position.
From the radiation pattern, measure the directive·
and bandwidth using directional coupler and
adjust the antenna for resonance.
To study antenna resonance and estimate VSWR·
based on antenna parameters.
Comparative study between various antennas·
dimensions on antenna parameters.
To observe the significance of parasitic element·
To study antenna modeling.·
parameters.
To construct your own antenna and study its·
To establish voice communication link using
