Sierra Selects R&S OTA Test Solution for 5G NR mm-Wave Testing

IoT solutions provider Sierra Wireless has selected Rohde & Schwarz’s compact antenna test range (CATR) based ATS1800C system for mmWave frequencies (FR2) testing. The transportable solution from Rohde & Schwarz features a state-of-the-art golden CATR reflector with rolled edges and a very smooth surface to minimize scattering and to provide precise measurement results as required for operation at high frequencies.

Test and measurement is moving from conducted testing to over-the-air (OTA) testing, especially in 5G NR due to the increased frequency range. One challenge of OTA testing is to maintain a compact test chamber size while providing a large quiet zone (QZ), or useable measurement area, in a wide frequency range. Rohde & Schwarz developed the R&S ATS1800C to combine all this, meeting current and upcoming requirements for 5G NR OTA testing.

The R&S ATS1800C is a turnkey, high-end chamber with a small footprint of only 1.3 m2. Thanks to its movable design, it is highly flexible and transportable, allowing the chamber to be easily moved from one lab to another. The solution provides a large quiet zone of 30 cm, fulfilling 3GPP 5G NR conformance test requirements. With its high shielding efficiency, the R&S ATS1800C is designed to provide a trouble-free environment for uninterrupted measurements of 5G antennas, modules, and devices. 

A unique characteristic of the R&S ATS1800C is its state-of-the-art gold CATR reflector, transforming the incoming spherical wavefront to a plane wave. Manufacturing the reflector requires processes that are accurate in the micrometer range. To achieve such high precision, Rohde & Schwarz has developed an innovative manufacturing method, delivering high-quality reflectors reproducibly.

The R&S ATS1800C supports the testing of devices weighing up to 8 kg, which makes it well suited for testing a variety of active or passive DUTs, from small chip modules to tablets and laptops or even small cells. Hardware triggering allows measurements during continuous movement of the high-precision 3D positioner, which can reduce measurement time by a factor of 5 to 10.

Click here to learn more about the R&S ATS1800C.

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