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OTA Intro

AMS-8500 


Single In Single OUT (SISO) OTA anechoic chamber  

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Site description

600 MHz -6 GHz: 7.32 m (L) x 3.66 m (W) x 3.66 m (H) ;

To evaluate antenna gain and efficiency of DUT (passive).

To evaluate transceiver performance of DUT (TRP/TIS).

Maximum load capacity is 10 kg.

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AMS-8923 


Single In Single OUT (SISO) OTA anechoic chamber

Multi In Multi OUT (MIMO) OTA anechoic chamber

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Site description

Can be used for SISO OTA test, too. (Vertical antenna ring)

Multi In Multi OUT (MIMO) OTA Anechoic Multi-Probe Chamber(Horizontal antenna ring)

600 MHz - 6 GHz: 5 m (L) x 5 m (W) x 5 m (H);

23 Sensor Models 

Convenient for large DUTs and complex DUT cable management.  

To evaluate antenna gain and efficiency of DUT (passive). 

To evaluate transceiver performance of DUT (TRP/TIS). 

To evaluate MIMO OTA performance of Mobile Station. 

Maximum load capacity is 30kg.



RC Chamber


Test Plan for Wireless Large-Form-Factor Device Over-the-Air Performance

WiFi a/b/g/n ; BT ; LTE ; Cat M1 ; NB-IoT ; LTE ; WCDMA ; GSM

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The over-the-air performance of larger devices, those having a physical dimension greater than 42cm, may be evaluated using reverberation chambers.


The exact placement of the device within the valid test volume of a reverberation chamber is not critical. This can be an advantage in some cases, for example, for large devices that may be heavy or awkward to position precisely or for devices where the exact location of the radiating element is not known because it is within a much larger chassis. 


Valid test volume boundaries shall be located at least 0.5λ at the frequency of operation from the walls, mechanical mode-stirrers, and the antennas.

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