Near-Field Antenna Test Range

Location: Harwell Campus

Designing and testing effective antennas and associated RF systems is a challenging task. To simplify this for those organisations who have bespoke needs we offer capabilities of both Near-Field and Far-Field Ranges for fast and highly accurate characterisation of a wide variety of antennas.

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Our state-of-the-art Spherical Near-Field Range is housed in a purpose built 4m x 4m x 4m anechoic chamber. This facility provides:

  • NSI-MI Spherical Near-Field Range measurement system with azimuth (Phi) turntable, Theta over Phi swing arm, and polarisation axis (scan area: 360 degrees in Phi and 270 degrees in Theta).
  • Rohde & Schwarz ZNB 40 Vector Network Analyser.
  • High precision measurements in the frequency range 700 MHz to 40 GHz.
  • Antenna measurement data and analysis include:
    • 3D complex far-field co-polar and cross-polar radiation patterns (for linear or circular polarisation)
    • Axial ratio (over 3D surface)
    • Multi-frequency directivity, gain and efficiency
    • Phase centre & group delay vs frequency
    • Microwave holographic projection to arbitrary measurement planes
    • S-parameters

Additional industry-leading capabilities for RF testing of satellite communication systems and components include: signal & spectrum analysers; vector network analysers; vector signal generators; channel emulator; programmable step attenuators; and programmable amplitude & phase shifters.



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