Hybrid differential transmission line bend to suppress common‐mode noise. Issue 17 (1st August 2013)

• Record Type: Journal Article
• Authors: Guan, S.W.; Kuo, C.W.; Wang, H.Y.; Hsu, C.S.; Wu, S.M.; Wang, C.C.
• Is Part Of: Electronics letters. Volume 49:Issue 17(2013)
• Page Start: 1068
• Page End: 1069
• Publication Date: 2013-08-01
• Subjects: digital circuits -- signal denoising -- time‐domain analysis -- transmission lines; hybrid differential transmission line bend -- differential‐to‐common‐mode conversion noise reduction -- high‐speed digital circuits -- alternating edge‐coupled transmission line sections -- broadside‐coupled transmission line sections -- differential insertion loss -- time domain -- three‐dimensional full‐wave solver; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2013.1340
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : A new type of differential transmission line with a bend is proposed to reduce differential‐to‐common‐mode conversion noise for high‐speed digital circuits. The hybrid structure consists of alternating edge‐coupled and broadside‐coupled transmission line sections which has the effect of reducing the mode conversion noise by at least 20 dB up to 10 GHz, whereas the differential insertion loss remains low. In addition, in the time domain, the common‐mode noise is lower than the conventional edge‐coupled differential transmission line bend. The performance of the proposed structure with a bend is demonstrated both numerically and experimentally. The measurement results agree very well with the simulation results from the three‐dimensional full‐wave solver.