Dynamic C-V Characteristic for Simulation of Crosstalk Caused by a Varactor Load

In this paper, crosstalk analysis of parallel microstrip lines with a varactor load is described. The varactor load has a transition characteristic. The transition characteristic causes a complicated reflected wave. It is difficult to estimate crosstalk induced by the reflected wave accurately. To estimate the crosstalk, the transition characteristic is investigated. The transition characteristic is expressed as the dynamic C-V characteristic. The crosstalk is simulated using the dynamic C-V characteristic. The result of the simulation agrees with the measured crosstalk. This agreement shows that the dynamic C-V characteristic is effective to estimate crosstalk.