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Spherical Near Field System

DMC team of experts are specialized in providing hardware and software for measuring Antennas in Near field region. For testing small cells or Massive MIMO Base station antennas beam steering our software seamlessly measures and plots almost all of Antenna parameters being described in 3GPP standards.

Technical Specifications:

  • Frequency Range: DC to 110 GHz
  • Positioning Accuracy: 0.02°
  • Payload Capacity : 50 lbs- 2000 lbs
  • DUT Test Size: 10cm to 3mtr
  • Elevation : ±180°
  • Azimuth : 360° continuous
  • Roll : 360°

DMC 360 Software enhanced features:

  • Near field test using Machine Learning Algorithm
  • 3D radiation pattern
  • Enhanced EIRP over-the-air (OTA) measurement
  • Near field Probe Correction Method
  • Adaptive Sampling Technique
  • Metal surface elimination
  • Source reconstruction method
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Single Mast Floor Mount Positioner

7

Dual Mast Floor Mount Positioner

Gimbal Type Positioner

4

DMC-XX-YY Series – “XX “ AUT weight Capacity, “YY”- Maximum Operating Frequency

Frequently Asked Questions

1. What is a spherical near field system?

A spherical near field system measures the electromagnetic fields around an antenna over a spherical surface. The collected data can be processed to determine the antenna’s far-field radiation characteristics.

2. What are spherical near field systems used for?

Spherical near field systems are used for antenna characterization, radiation pattern measurement, 3D pattern analysis, beamforming evaluation, and testing complex antenna systems such as 5G and Massive MIMO antennas.

3. What frequency range does the spherical near field system support?

The DMC RF spherical near field system supports a frequency range from DC to 110 GHz.

4. What is the difference between spherical and planar near field testing?

Planar near field testing measures the antenna over a flat scanning surface and is generally suitable for directional antennas. Spherical near field testing provides broader angular coverage and enables complete 3D radiation pattern measurements.

5. What antenna parameters can be measured using a spherical near field system?

Depending on the test configuration, the system can measure and analyze parameters such as radiation patterns, gain, polarization, beam characteristics, magnitude, and phase.

6. Can spherical near field testing be used for Massive MIMO antennas?

Yes. Spherical near field systems can be used for testing complex antenna systems, including small cells and Massive MIMO base station antennas, particularly for beam-steering measurements.

7. What is the positioning accuracy of the system?

The DMC RF system offers positioning accuracy of up to 0.02°, supporting precise antenna measurement applications.

8. What DUT sizes can the spherical near field system support?

The system can support devices under test ranging from approximately 10 cm to 3 metres, depending on the system configuration.

9. What advanced features are available in the DMC 360 software?

The DMC 360 software includes features such as 3D radiation pattern visualization, machine-learning-based near-field testing, EIRP OTA measurements, probe correction, adaptive sampling, and source reconstruction.

10. Can a spherical near field system be customized?

Yes. A spherical near field system can be configured based on specific requirements such as frequency range, DUT size, payload capacity, positioner type, and antenna testing application.

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