RFIDLabs
Tel. +91 512 2597136
Email: rfidlabs@iitk.ac.in
Department of Electrical Engineering Indian Institute of Technology Kanpur Kanpur - 208 016, India
 
   
Anechoic Chamber
Measurement of RF properties of antennas and tags is carried out in the Anechoic Chamber. The chamber has been designed keeping in mind the requirements of UHF RFID system components. We also use this chamber to carry out Antenna Measurements, Mono static/ Bi-static RCS Measurements, Near Field Measurements, Bore Sight Measurements, Radome Testing etc.
 
 
Transmitting Antennas
A wide variety of antennas which include, dipoles, horn, helix, log-periodic etc.
Quiet-Zone Volume
5.0 m x 3.0 m x 0.9 m
Frequency Range
900 MHz to 26.0 GHz
Chamber Size
7.0 m x 6.0 m x 3.3 m
Shielding Effectiveness
Min. –50 dB at 1.0 GHz and min. –40 dB from 2.0 to 18.0 GHz.

x
Quiet zone Size/Location/Quietness/Residual RCS of Chamber:
S. No Frequency Quite Zone(QZ)(L x W) for Antenna Mear. Height = Length Location of QZ from Transmitting Antennas Quietness Both for Antenna / RFID Residual (Equivalent) RCS of Chamber
          Location RCS in -dBsm
1 1.0 GHz 0.8 m x 2.0 m 3.6 to 4.4 m -30 dB 3.6 m -30
2 2.0 GHz 0.6 m x 2.0 m 3.8 to 4.4 m -35 dB 3.8 m -35
3 3.0 GHz 0.5 m x 2.0 m 3.9 to 4.4 m -40 dB 3.9 m -35
4 10.0-26.0 GHz 0.3 m x 2.0 m 4.1 to 4.4 m -45 dB 4.1 m -40
x
Absorber Performance
TYPE THICKNESS
REFLECTIVITY IN DB FOR ANGLES NEAR NORMAL INCIDENCE RELATIVE TO METAL SURFACE VIZ. 0 DB
1.0GHz 3.0GHz 10.0GHz 18.0GHz
FU-SE-18 18 -40 -40 -40 -40
FU-SE-12 12 -25 -40 -40 -40
FU-SE-8 8 -25 -40 -40
FU-LE-SE-12 16 -25 -30 -30 -30
x
Absorber Type/Quantity
(a) FU-SE-18 ; 18" Thick Pyramidal PU Foam based 66.6 sq m
(b) FU-SE-12; 12" Thick Pyramidal / corner blocks PU Foam based 34.2 sq m
(c) FU-SE-8 / 8" Thick Pyramidal PU corner blocks Foam based 73.8 sq m
(d) FU-SE-FL-12 ----; 16" Thick Walk-on Absorber 10.8 sq m
Total Qty of Absorber 185.4 sq m
x
Intended Performance
a) Test and Characterising of RFID systems under different environment.

b) Azimuthal antenna Pattern: 360 degree.

c) Relative/Absolute Gain Measurements of Antenna whose gain range from 0 dBi to +20 dBi

d) RCS Measurements (both monostatic and bistatic). Bistatic Measurements are from +/- 30 degree from monostatic to be carried out.

e) Chamber may be used for circular polarization and rotating linear polarization.

f) Bore sight measurements be carried out.

g) Radome error measurements be carried out.
x
Wave Guide Air Vents
0.3 m x 0.6 m sized 2 Nos.

Quiet zone Size/Location/Quietness/Residual RCS of Chamber.

Absorber Performance

Absorber Type / Quantity.

Intended Performance

Wave Air Vents
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