
On the system computer, the collected near field data is transformed to a far field antenna pattern. Not only antenna patterns but also antenna polarisation errors, directivity and antenna gain can be measured with this system. Quite zones in the 4(w)x6(l)x4(h) meter test chamber are realized by the Emerson& Cuming absorber. The high sensitive receiver and the low noise level guarantee a large dynamic range in the measurement results. Eight near field measurement probes are available, covering a frequency range from 750 MHz to 15 GHz.
Various data presentations in the software are available for the antenna research and development work.
Measurement technique | Planar near field |
Anechoic test range (WxLxH) | 4x6x4 meter |
Manufacturer | Nearfield Systems Inc. (NSI) |
Model | 300V-8x8 |
AUT Z-axis travel (manual) | 2 meter |
Probe Z-axis adjustment (automatic) | 100 mm |
Scanning surface | 2.4 x 2.4 meter (8' x 8' ) |
Planarity | 0.076 mm RMS |
Step resolution | 0.025 mm |
Scan speed | 0.25m/s |
Measurement frequency range | 0.75 - 15 GHz |
Receiver | HP 8720D |
Measurement probes | WR975 (0.75 - 1.12 GHz) WR650 (1.12 - 1.70 GHz) WR430 (1.70 - 2.60 GHz) WR284 (2.60 - 3.95 GHz) WR187 (3.95 - 5.85 GHz) WR137 (5.85 - 8.20 GHz) WR112 (7.05 - 10.0 GHz) WR75 (10.0 - 15.0 GHz) |
AUT lift facility | manual |
AUT maximum weight | 500 Kg |
Control and data acquisition station | Windows based PC including script option |