Investigation of the propagation and crosstalk of ultrashort electrical pulses in a dual-phase coupled microstrip lines structure is reported. The current distributions and propagation constants of the dominant c- and pi -modes are calculated by using the spectral domain method, and the full-wave analysis results obtained are incorporated into a FFT (fast Fourier transform) algorithm to study pulse distortion and crosstalk in the transmission lines. Computer simulation results reveal the superior low-distortion, low-crosstalk characteristics of this transmission line structure, which can be used as interconnects in high-density, high-speed, integrated circuits (ICs).
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