ANECHOIC TEST BOXES (atb) FOR ACCURATE
ANTENNA PATTERN AND
RADAR CROSS-SECTION MEASUREMENTS
Low cost solution to anechoic chamber.
Reflection
signal (reaching test zone) down by min -30dB with respect
to direct signal.
Low RCS (Plastic
pipe and holding devices) stand supplied to hold transmitting
antenna (generally a high gain pyramidal horn.)
The antenna under
test / Radar Cross Section measurement target stand provided
on a manually/ electrically operated turntable with low RCS stand.
Five-side absorber
covered plywood boxes.
Special corner block
absorbers used.
Suitable type optimum
performing absorbers at near normal/grazing incidences
of extraneous signals used.
Two types of boxes
are being made. Custom tailored solution, other size boxes,
anechoic chambers can be provided.
KV-ATB-X, suitable
for X band and higher frequency, viz., frequency higher then 8.0 GHz
Size 0.8m X 0.8m X 1.0m typical.
KV-ATB-L, suitable
for 900 MHz and higher frequencies. Performance (Reflection
Loss) at lower frequencies shall be deteriorated, like
at 750MHz it will be-25dB only), Size 1.2m X 1.2m X 1.2m typical.
Suitable
for Microwave and Antenna labs.
Designed in view
of requirements of educational institutes.
Necessary attachment
for Antenna/Microwave Trainer kits.
Necessary requirement
for accurate antenna pattern/RCS Measurements.
ANECHOIC TEST BOXES FOR ACCURATE
ANTENNA PATTERN AND
RADAR CROSS-SECTION MEASUREMENTS
EXPERIMENTS TO BE CARRIED OUT USING ANECHOIC TEST BOXES
1/d2 characteristics of Microwave propagation
Polar
Plots- E & H Plane
Cartesian Plots-
E & H Plane
Vertical Plane Plots
– Ground Plane effect
Directivity / gain of
Antenna.
Front to Back Ratio
Side lobe Level
and its Angular Position
Beam width –
Half Power (3dB) & 10 dB
Frequency Bandwidth
of an Antenna
Verify Reciprocity
axiom
Study RF reflection loss and absorption
loss properties of some sample absorbers
