EDI CON USA 2018

Sessions Speakers Exhibitors Floor Plan Buzz

Cut-off frequency prediction for MMW coaxial interconnects (Room 203)

Due to new millimeter wave (MMW) bands being used for the 5G communication effort, hardware designers will need to carefully consider high frequency cables and interconnects, with respect to minimizing losses through their maximum operating frequency. This maximum frequency, or cut-off frequency, is considered to be when higher order modes (such as the TE11 mode) can propagate, robbing signal from the fundamental TEM mode. This frequency is determined by the transmission line and connectors in the cable assembly and can be difficult to accurately predict. Understanding the effect of supports beads and impedance matching can help provide a model of this phenomenon. Simulating the connector and cable using Ansys HFSS will validate the model and provide a more accurate prediction of the cut-off frequency for the assembly. This paper will present a model of the phenomenon and simulation to support the model in order to better predict the cut-off frequency of a coaxial cable assembly.