关键词: 信号完整性, 差分传输线, 差分信号, 共模噪声

Abstract:

To suppress the commonmode noise, this paper proposes a method for compensating an undesired phase delay caused by unequallength differential transmission lines. The performance of the proposed structure with a 45 degree bend is demonstrated by simulating with HFSS and ADS. The results demonstrate that the proposed model compensates the length skew of the bend of differential transmission line, which has the effect of reducing the mode conversion noise by about 20 dB up to 8 GHz, whereas the differential insertion loss remains low. In addition, in the time domain, the commonmode noise is lower than the conventional differential transmission line bend.

Key words: signal integrity；differential transmission lines；differential signals；common , mode noise