Crosstalk and Equivalent Circuit Model of Segmented Coplanar Waveguide Transmission Line at 5G FR2 Band

摘要

With the improvement of miniaturization and integration of the system, transmission lines need to meet the requirements of high frequency and high speed, eliminate signal crosstalk to the maximum, and improve the signal integrity of the system. In this paper, a flexible segmented coplanar waveguide (SCPW) transmission line structure at 5G FR2 band is proposed, and the crosstalk mechanism of the transmission line is analyzed by using the equivalent circuit model. On this basis, the electromagnetic characteristics of one-unit and three-units, conventional and 100mm interconnects in the 0-45 GHz frequency band are simulated and analyzed. When the crosstalk is −40/−50dB from 20GHz to 45GHz, the distance between conventional one-unit SCPWs is 1.4mm. It is found that the mutual capacitance and mutual inductance between SCPWs is increased with the line length and the number of units. Furthermore, the near end crosstalk and far end crosstalk are seriously affected. This SCPW with appropriate line length and units can be used for 5G millimeter wave applications.