An anechoic chamber (an-echoic meaning "non-reflective, non-echoing, echo-free") is a room designed to completely absorb reflections of either sound or electromagnetic waves. They are also often isolated from waves entering from their surroundings. This combination means that a person or detector exclusively hears direct sounds (no reverberant sounds), in effect simulating being inside an infinitely large room.
Anechoic chambers range from small compartments the size of household microwave ovens to ones as large as aircraft hangars. The size of the chamber depends on the size of the objects and frequency ranges being tested.
a) Testing of SE and Quietness level (QL) of
b) SE is tested as per IEEE-299.
c) QL test of the chamber be done by free space
Supply along with 3D ANTENNA POSITIONER
(With VNA interfacing for Automatic Measurement of 3D pattern, gain measurement, Parameter etc).
v Maximum load : up to 1Kg.
v Azimuthally rotation : 360 degree.
Elevation Movement should be +90 degree.
18GHz Ultra Low loss Testing cables.
Planar Horn : 0.9 GHz to 12.4 GHz- 2 Nos. Connectors & adapters : SMA (F) to SMA (F) Adapter; N (F) to N (F), adapter.
Hardware Technical Specification:
v Azimuth Start Angle : -360 to 360 degree
v Azimuth Stop Angle : -360 to 360 degree
v Azimuth Min Step Size : 1 degree
v Elevation Start Angle : -360 to 360 degree
v Elevation Stop Angle : -360 to 360 degree
v Elevation Min. Step Size: 1 degree
v Power : 12 V Adapter
v Control : Software via USB
v No of cycles of rotation : User Configurable
v Return to Home : Yes
v Loading Capacity : 5 Kg
v Material : Aluminium alloy
v Finish : Low Radar cross section
v Motor : Std. Nema23/34 stepper motor
v Rating : 2 Amp/Phase
v Resolution : 1.8 degree per step
v Controller output : 4 amps peak current
v Power Input : 90-260 Volts AC
v Compatibility : Key sight, Anritsu, R&S,
v Planar VNA Planar Horn: 0.9 GHz - 12.4 GHz- 2 Nos.
v Polarisation : Linear
v Beam width : 60 degrees (Mid-Band Typ.)
v VSWR :0.9 GHz - 0.15GHz < 2.5:1 ,1.5GHz-12.4GHz<2.0:1
v Gain :5.5dBi @ 1GHz Typ. 8dBi @ 2.7GHz Typ. 5dBi @ 6GHz Typ.
v Power Handling : 10W
v Aperture Width : 165m
v Length : 230mm
v Microwave Cable :SMA-SMA cables 2m, 2-Nos
v Insertion Loss : 6dB 12-18 GHz
v Absorber on Motor : EM Lossy PU Foam
v Pyramidal Reflection : -25dB @ 10GHz
v Equivalent RCS : -30dBsm 10-18GHz
v Motor type :2/4 phase bipolar stepper
v Communication : USB
v Microcontroller : 32 bit
v Radar Cross Section : -20dBsm
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