Planar near field antenna measurement system is the use of near field antenna amplitude and phase distribution and far field amplitude and phase distribution to the principle of mathematical Fourier transform relationships through precision 3D sampling module (including planar near-field scanner and high-performance microwave probe) and radio frequency control system (including ultra-wideband microwave modules and system control and processing unit) to realize the magnitude of the antenna near field region in the phase of the acquisition, through the amplitude and phase and location data collected Fourier transform operation, obtaining measured antenna the far-field region distribution, enabling the radiation parameters of the antenna, such as pattern, gain, polarization characteristics of the analysis.

antenna gain test;

antenna pattern: sidelobe level, beam width, depth zero difference test;

antenna near-field diagnostic function tests;

multitasking (multi-frequency, multi-channel, multi-wave bits, etc.) test functions;

Extensions: Digital array of testing capabilities, near-field RCS testing capabilities, ultra-materials and device testing functions, communication antenna three-dimensional pattern testing.

Working frequency: 0.5 ~ 40GHz;

gantry movement: vertical planar near-field scanner, xyz three-dimensional linear motion plus P polarization axis of rotation;

gantry system maximum size: 30000 × 1240 × 16000;

Z to travel: ≥250;

P axis: coaxial cross-linked 0 ° ~ 360 °, 5 two limit;

Positioning accuracy: XY direction (RMS): ≤0.05mm, P axis: ± 0.05 °;

Resolution: XY to: ≤0.025mm;

Flatness: mechanical (RMS): ≤0.1mm (uncorrected), machinery (RMS): ≤0.05mm (optical correction), Junior (4000 × 2000) or less (RMS): ≤0.025mm (optical correction);

Scan speed: Maximum 400mm / S;

probe rack bearing: ≥35kg;

amplitude accuracy (RMS): 0.5dB;

phase accuracy (RMS): 2 °;

antenna gain accuracy: 0.3dB;

sidelobe level accuracy: 0.5dB@SLL=-35dB;

sidelobe level test accuracy: 1.5dB@SLL=-45dB;

simultaneous multi-mission capability: ≥300.