Radiation properties of coaxial-to-coplanar transitions in K band

A radiation and electro-magnetic (EM) field analysis of commercially available coaxial-to-coplanar transitions is presented. Radiation is quantified by measuring a crosstalk component between two Southwest Microwave´s transitions using a reflective planar calibration standard placed inside. Predictive simulation results are compared to the measured data and good agreement is reported. The proposed evaluation method is useful to evaluate quality of the transition and its radiation properties. Results can be used to estimate the uncertainty budget of the calibrated measurement with respect to the measured radiation. Obtained results are promising to help further development of hardware or software solutions to suppress or minimise the radiation emerging from the launcher.