Aiming at the problem of crosstalk between microstrip lines, a method of
reducing crosstalk by using Cross-Shape Resonators (CSR) structures is
proposed. On the premise of not changing the spacing of microstrip
lines, this method adds CSR structures between the coupled microstrip
lines to increase the capacitive coupling and thus to suppress the
far-end crosstalk. Based on the analysis of the equivalent circuit of
CSR structure, the parameters simulation and verification are carried
out by ADS and HFSS software. Through HFSS simulation and physical test
of the designed CSR structure, the results show that: the CSR structure
can significantly reduce the far-end crosstalk by about 15 dB in the
frequency of 0~10GHz, and the maximum can reach 43 dB.
Compared with 3W crosstalk reduction method and RectangularShape
Resonators (RSR) crosstalk reduction method, the crosstalk reduction
effect is improved.