ETS Lindgren Anechoic Chamber

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Edward Cooper
5 years ago
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ETS Lindgren Anechoic Chamber Provides an electromagnetically quiet environment for measuring the radiating properties of a device-undertest Enclosed by an external metallic shielding to provide

a free space environment for testing Application examples: Characterization of intentional radiators or the scattering of electromagnetic energy, such as antenna radiation pattern and radar cross

1 ETS Lindgren Anechoic Chamber Provides an electromagnetically quiet environment for measuring the radiating properties of a device-undertest Enclosed by an external metallic shielding to provide isolation from the outside environment Interior lied with radio frequency/microwave absorbers and ferrite tiles to minimize unwanted multiple internal signal reflections inside the chamber To emulate a free space environment for testing Application examples: Characterization of intentional radiators or the scattering of electromagnetic energy, such as antenna radiation pattern and radar cross section (RCS) measurements Determining the level of radiation/noise from unintentional radiators. For instance, electromagnetic interference (EMI) measurement for digital devices/systems Determining the level of immunity of an electronic device/system when exposed to ambient electromagnetic signal/noise

accommodating small UAV of up to 1,100 lbs ~100 db shielding from external environment Potential

2 Electromagnetic Anechoic Chamber Features Electromagnetic measurement and characterization from 30 MHz to m measurement range Biggest chamber within ~500 miles in the area Capable of accommodating small UAV of up to 1,100 lbs ~100 db shielding from external environment Potential Applications: Antenna performance characterization EMI/EMC measurement Radar cross section study Others

3 Chamber Floor Plan 11.6 m Data acquisition system and device controller Reference RX antenna Absorbers AUT (TX antenna) 7.3 m Walkway Turntable 1.2 m x 2.1 m Single leaf door Connector Panel 2.4 m x 2.4 m Double leaf door

Chamber Specifications Chamber Dimensions Wall Shielding Door Shielding Absorber 11.58 m x 7.29 m 7.36 m (interior, with 0.

from 50 MHz to 1 Microwave: 100 db @ 18 Magnetic field: 20 db @ 1 khz, 70 db @ 14 khz, 100 db @ 200 khz Electric field: 90 db @ 1 khz, 120 db from

4 Chamber Specifications Chamber Dimensions Wall Shielding Door Shielding Absorber m x 7.29 m 7.36 m (interior, with 0.4 m raised floor) Magnetic field: 20 1 khz, khz, khz Electric field: 100 db from 200 khz to 50 MHz Plane wave: 100 db from 50 MHz to 1 Microwave: Magnetic field: 20 1 khz, khz, khz Electric field: 90 1 khz, 120 db from 10 khz to 50 MHz Plane wave: 120 db from 50 MHz to 10 Microwave: 100 db from 10 to 26, Power handling: 775 W/m 2 Attenuation: >10 db from 30 MHz to 18 Normal incidence

5 Chamber Specifications Ferrite Tiles Site-VSWR Field Uniformity Free-space Normalized Site Attenuation CTIA Ripple Testing Connector Panel Handle up to 200 V/m of continuous RF field Quiet zone test volume: 1.5 m Test frequency range: 1 18 Measured performance: 3.37 db Satisfied CISPR performance requirement 6 db Test plane: 1.5 m x 1.5 m Test frequency range: 80 MHz to 1 Field level evaluated: 5.4 V/m Measured performance: < 4.2 db Satisfied IEC standard 6 db Test range: 3 m Test diameter volume: 1.5 m Measured performance: ± 3.9 db deviation from theoretical value specified in CISPR (Ed.3) Eligible for CTIA Authorized Testing Laboratory (CATL) filing Test data available upon request 3 N-type connectors 6 FSMA penetration kit 6 FC-type optical connectors 2 K-type connectors 2 ST penetration kit

List of Equipment/Tool Hardware Agilent N5230C PNA-L 4-port Network Analyzer (10 MHz 20 ) Agilent 8052D calibration kit Agilent E4446A PSA Spectrum Analyzer (3 Hz 44 ) ETS-Lindgren Standard Antennas

6 List of Equipment/Tool Hardware Agilent N5230C PNA-L 4-port Network Analyzer (10 MHz 20 ) Agilent 8052D calibration kit Agilent E4446A PSA Spectrum Analyzer (3 Hz 44 ) ETS-Lindgren Standard Antennas (see next slides) ETS-Lindgren 7-TR/POL Antenna Tower (max. load: 13.5 kg) ETS-Lindgren 2090 Dual-Device Controller ETS-Lindgren 4340 Shielded Camera System Bosch DLK Digital Distance Measurer Skil MT 8201 Self-Leveling Cross Line Laser Assorted RF cables and connectors/adaptors Software Ansys HFSS v14 Agilent ADS CST Microwave Studio MATLAB 2011b

Available Standard Antennas # Antennas Designated frequency Start Stop ETS-Lindgren Mini-Bicon* (cage) 3180B 30 MHz 1 Mini-Bicon* (conical) 3180B 30 MHz 3 End-Fed Mini-Bicon 3183 1 18 BiConiLog 3142C

1 Double-Ridged Horn 3117 1 18 Quad-Ridged Horn 3164-06 300 MHz 6 Quad-Ridged Horn 3164-05 2 18 Pasternack WR159 Horn PE9860/NF-15 4.9 7.05 WR187 Horn PE9861/NF-15 3.95 5.86 Narda WR187 Horn 643 3.

7 Available Standard Antennas # Antennas Designated frequency Start Stop ETS-Lindgren Mini-Bicon* (cage) 3180B 30 MHz 1 Mini-Bicon* (conical) 3180B 30 MHz 3 End-Fed Mini-Bicon BiConiLog 3142C (x2) 26 MHz 3 Log-Periodic Dipole Array MHz 2 Dual-Pol. Log-Periodic 3145BDP 100 MHz 1.1 Double-Ridged Horn Quad-Ridged Horn MHz 6 Quad-Ridged Horn Pasternack WR159 Horn PE9860/NF WR187 Horn PE9861/NF Narda WR187 Horn WR430 Horn Scientific Atlanta WR137 Horn WR187 Horn WR650 Horn MHz 100 MHz Measurement frequency 300 MHz ^ Data sheet available upon request * Single antenna with two configurations Quad-Ridged Horn Dual-Pol. Log-Periodic Mini-Bicon

E MC Ane c hoi c Chambers

E MC Ane c hoi c Chambers.)+6! Features 6 MHz - 8 GHz Frequency Range Full Compliance Testing for Radiated Emissions: - ANSI C6. Parts 5 & 8 - EN 57 - CISPR / EN55 - CISPR 6/ EN556 - CISPR / EN55 - VCCI