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| Analysis and Suppression of Crosstalk for T-shaped Microstrip by Using FDTD |
| Yan Dong; Sun Li; Sun Ya-xiu; Jiang Bao-jun |
| Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150001, China |
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Abstract The crosstalk of T-shaped microstrip is the important component in signal integrity of a high-speed circuit. In this paper, the fullwave analysis of the crosstalk is carried out by adopting the Perfectly Matched Layer Finite-Difference Time-Domain (PML-FDTD) method, and then the measures of reducing crosstalk are proposed in detail. The different structure parameters of improved T-shaped microstrip have different influence on the crosstalk. That is, (1) the crosstalk between microstrips is smaller as the orifice distance S is becoming bigger, and the amplitude of crosstalk is reduced to 10dB; (2) The value of α is smaller as the crosstalk between microstrip is becoming smaller correspondingly, and the amplitude of crosstalk is reduced to 14dB. Thus opening an orifice on the T-shaped microstrip can reduce the crosstalk between one T-shaped microstrip and another adjacent one remarkably by changing orifice distance S and angle α.
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Received: 13 November 2006
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2007, Vol. 29 
