Dual-Polarized Probe for Millimeter-Wave Multi-Probe Spherical Near Field Measurement System

In this paper a broadband dual-polarization probe has been designed and simulated which can be used for 5G millimeter-wave frequency band (below 50GHz) measuring. The probe not only has a wide impedance matching bandwidth, but also has no deterioration of the pattern of the interested frequency band. At the same time, the structure is simple and occupy small volume. The simulation results show that the impedance bandwidth of the probe proposed to this paper is 6-50GHz, and the isolation between the ports is more than 30dB in the whole frequency band, and it has good radiation performance and cross-polarization level. Therefore, this probe can find a scene in 5G millimeter wave frequency band measurement application, especially in multi-probe spherical near-field measurement system.