Sahajanand Laser Technology Ltd

Sector 26, Gandhinagar, Gujarat

Structure:

• The frame is in Alluminum 6082 tube diam. 34mm thick 4, 5mm.
• The joints are type 6-1 diam. 33, 7mm.
• The weight of the dimension 8x5 h.3, 5 mt is 296 Kg.

A total low cost solution of Shielded Anechoic Chamber for antenna measurements and RCS measurement.

• A PAN type design for high performance shielded chamber, a Total Steel Structure (TSS), an improved design over conventional sandwich type wood core structure (WCS).
• TSS offers years of maintenance free, high RF attenuation.
• Easy expandability and relocation using less parts.
• P.U. Foam based pyramidal/wedge/walk on/corner absorbers as required.
• Access Panel: Providing access to outer and inner signal. Consists of various RF connectors with matched terminations on both ends.
• Provided power line filter one phase, 2 lines, 15 Amperes, 220V.
• Various accessories and components available to utilize chamber in best possible way for various tests

• Frequency Range: 800MHz 18GHz and beyond.
• Shielding Effectiveness (SE): Min.-80 dB on walls and -80 dB on windows or door. SE tested as per IEEE STD, 299.
• Quiet-Zone size: 0.5m X 0.5m Cross section. Length of quiet zone can be customized.
• Quietness Level: Min -30 dB at 800MHz raising to -40 dB at 3.0 GHz and higher frequencies.

Microwave Absorbers-
• P.U. Foam based absorber tested as per IEEE STD. 1128.
• All Absorbers to be used are Fire Retarded: Passes NRL-8093, USA test 1, 2 & 3 With Zero Halogen Means.

Chamber Construction Details-
• PAN Type Shielded structure.
• 2mm thick hot galvanized sheets used for PAN manufacturing.
• Cutting and bending by Laser / CNC machines.
• Radiography quality TIG welding of corners of panels.
• Joining of PANs using Rail Road wire mesh based metallic Gasket.

Shielded Window-
• Windows are designed to open approx.180.
• Rail Road gasket used between the window frame and the basic Pan structure.
• Two rows of Copper Beryllium fingers are provided for ensuring Shielding Effectiveness.

• For various RF and Microwave Measurements under controlled conditions.
• RF Noise Security.
• EMI/RFI testing and research.
• High security communications.
• Areas of high security, such as government or commercial communication centers.

Antenna Positioner-
• Advanced Antenna positioner with turntable capable of 360 degree azimuth rotation with 1 degree step precisely controlled by PC software.
• Load bearing capacity 5.0Kg.
• Antenna positioner can be synchronized with various analyzers like VNA, Power Meter etc. to record power reading automatically at various positions.
• PC interface software to operate positioner & to draw polar plots.
• Low RCS stands for both transmitting & receiving antennas mounting.
• Various RF cables & connectors to be used inside chamber.