This paper presents a design of low-cost planar near-field to far-field measurement system for a small antenna and small scattering object. The low-cost servo motor is employed to drive the near-field probe. The proposed system uses a microcontroller interfacing with the LabView to control and display an actual position of the probe. The scattering from a star corner patch is measured by using proposed system. Both simulated and measured far-field results are obtained by using the proposed near field to far field (NF-FF) mathematical transformation program. The preliminary far-field results obtained from simulation and from proposed NF-FF system are compared. It is observed that the results from the proposed NF-FF system are in good agreement with the simulation results.
(英)
This paper presents a design of low-cost planar near-field to far-field measurement system for a small antenna and small scattering object. The low-cost servo motor is employed to drive the near-field probe. The proposed system uses a microcontroller interfacing with the LabView to control and display an actual position of the probe. The scattering from a star corner patch is measured by using proposed system. Both simulated and measured far-field results are obtained by using the proposed near field to far field (NF-FF) mathematical transformation program. The preliminary far-field results obtained from simulation and from proposed NF-FF system are compared. It is observed that the results from the proposed NF-FF system are in good agreement with the simulation results.