How to Test 5G FR2 OTA Performance

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Compact Antenna Test Range
+ Compact Antenna Test Range
Compact Antenna Test Range
+ Compact Antenna Test Range

Characterize 5G FR2 OTA Performance

Over-the-air testing of a 5G FR2 phased-array antenna requires a controlled radiated environment, accurate angular positioning, radio frequency stimulus and measurement, and synchronization with the antenna's beamforming controls. A compact antenna test range (CATR) creates the test environment while a vector network analyzer and vector signal generator provide the measurement and modulated-signal capabilities needed to characterize the array over its operating angles.

The test sequence can measure spherical antenna patterns, effective isotropic radiated power (EIRP), gain-to-noise-temperature ratio (G/T), gain compression, and error vector magnitude (EVM). The chamber positioner rotates the device under test while the measurement system captures radiated response versus angle, enabling engineers to compare beam patterns and other RF performance metrics across beam states and before and after array calibration.

5G FR2 OTA Characterization Solution

Testing a phased-array antenna requires synchronized RF measurements, beam-control commands, and accurate positioning of the device under test within a controlled over-the-air environment. The solution combines a compact antenna test range with a PNA-X vector network analyzer, VXG vector signal generator, and antenna measurement and chamber-control software. The CATR provides the radiated test environment and angular positioning required for spherical antenna measurements. The network analyzer supports calibrated linear and nonlinear RF measurements, while the vector signal generator supplies wideband modulated signals. Together, the system supports phased-array calibration and measurements including radiation patterns, effective isotropic radiated power (EIRP), gain-to-noise-temperature ratio (G/T), gain compression, and error vector magnitude (EVM).
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See Block Diagram of 5G FR2 OTA Characterization Solution

Block Diagram of 5G FR2 OTA Characterization Solution

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