3D Antenna Positioner SAP20

Amitec is offering complete set of 3 D positioner & accessories required for antenna positioning for far-field pattern plotting. As against rotary tables which have been the common practice, we offer state of the art 3 D positioner for research and development & measurement in antennas. It provides freedom required for antenna pattern measurement. One is able to hold the antenna from the back lobe and rotate the antenna by 360 degree along horizontal plane for azimuthal measurements. Over 360 degree of rotation in vertical plane is used for elevation plane measurements. The stepper motor controlled rotator is controlled by PC using software provided. The data acquisition
system software controls the axis motors and synchronizes the VNA to record the RF level corresponding to different angular locations. The data array is then used to synthesize the pattern in 3D for visualization as per IEEE norms. Low loss cables armored cables connect the Reference and test antennas to the VNA (provided by the customer). The system is able to interface to Keysight, R&S, Anritsu, Planar brands of VNA’s. A pair of planar horn antennas with calibration charts complete the measurement setup for measuring the gain of the test antenna. Pyramidal absorbers are used to shroud the antenna rotator to reduce the radar cross section and reduce the induction in near field. This enables the antenna to be measured in near anechoic field and obviates the need for anechoic chamber for >50% of antenna
measurements. For R&D a quick first pass of measurement is desired for faster iterations and emphasis is mostly on main lobe, gain, beamwidth, side lobe levels etc. Only when the need is to characterize these with a higher order of accuracy and <-20dB side lobe levels do we really would require an anechoic chamber.

1. Frequency support till 26.5 GHz.
2. 3D Positioner (with VNA interfacing for Automatic Measurement of 3D pattern, gain measurement, S-parameter etc).
3. Maximum load: upto 1.5Kg.
4. Azimuth rotation: 360 degree.
5. Elevation Movement will be 360 degree.
6. Ultra Low loss Testing cables.
7. 3D Visualization and Data Acquisition Software.

Antenna Patterns

3D Antenna Positioner SAP20
SAP20 3D Antenna Positioner.pdf
Adobe Acrobat Document 750.7 KB