Guard Trace Design for Improvement on Transient Waveforms and Eye Diagrams of Serpentine Delay Lines

Shiue, Guang-Hwa; Chao, Chia-Ying; Wu, Ruey-Beei

doi:10.1109/tadvp.2010.2064165

Cited by 24 publications

(13 citation statements)

References 11 publications

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“…However, in a homogenous environment such as a stripline, the far-end crosstalk coefficient is almost about zero; thus, far-end crosstalk voltage should approach zero. Further, if the guard trace can be regarded as an ideal grounding line, crosstalk coefficients can be reduced, as can crosstalk noise [10]. Figure 3 shows the top views of coupled lines with and without a guard trace structure and equivalent HSPICE simulation circuits.…”

Section: Coupled Lines With Guard Tracesmentioning

confidence: 99%

“…The driver and load resistances, R S and R L , are chosen as matched impedance, and rise time (t r ) of the source, V S (t), is 50 ps. The grounded vias of OSGT and TGVGT are regarded as a series inductance [10] …”

Section: Coupled Lines With Guard Tracesmentioning

confidence: 99%

“…A microstrip serpentine delay line with the guard traces inserted into the crosscoupled conductors in the parallel section has been proposed to improve delay line frequency characteristics [8]. Improvements on the transient transmission waveform and eye diagram of a serpentine delay line using guard traces have been studied [9,10]. The inserted guard traces with only two grounded vias at both ends can reduce crosstalk noise interferences at the received end of the serpentine delay line in a microstrip structure.…”

Section: Introductionmentioning

confidence: 99%

“…The inserted guard traces with only two grounded vias at both ends can reduce crosstalk noise interferences at the received end of the serpentine delay line in a microstrip structure. The noise cancellation mechanisms of nearend and far-end crosstalk noise interferences on the TGVGTs in a microstrip line structure have been presented [10]. Another guard trace type, i.e., one with a grounded via at one end and the other end, which is open (i.e., OSGT), has been used to reduce crosstalk at the receiving end in a stripline structure.…”

Section: Introductionmentioning

confidence: 99%

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Comparisons of Improvements on Time-Domain Transmission Waveform and Eye Diagram for Flat Spirral Delay Line Between Two Types Guard Traces in High-Speed Digital Circuits

Shiue¹,

Shiu²

2011

PIER B

Self Cite

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Abstract-This paper investigates the use of the guard traces to improve the Time-Domain Transmission (TDT) waveform and eye diagram for a flat spiral delay line. Two types of guard trace are adopted to implement and analysis in microstrip line and stripline structures. One is Two Grounded Vias type Guard Trace (TGVGT) and the other is Open-Stub type Guard Trace (OSGT). The timedomain analysis results by HSPICE and the associated simple circuit modeling is presented. According to the simulation results, the original TDT crosstalk noises can be reduced by about 80% when using TGVGTs or OSGTs in a stripline structure and by about 60% when using TGVGTs in a microstrip line structure. Additionally, the eye diagrams also can obtain improvement. The crosstalk noise cancelation mechanisms of the flat spiral routing scheme on TGVGTs and OSGTs are investigated by graphic method. In addition, how the degradation for the OSGT inserted into the flat spiral delay line in microstrip structure is clearly investigated. A flat spiral delay line inserted into TGVGTs and OSGTs both can obtain good improvements of the TDT waveform and eye diagram in a stripline structure. Moreover, adding OSGTs to the flat spiral routing scheme is easily accomplished due to the open end of OSGTs. Finally, HSPICE simulation and time-domain measurements of crosstalk noises of TDT waveforms, and eye diagrams are use to validate the proposed structure and analysis.

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Section: Coupled Lines With Guard Tracesmentioning

confidence: 99%

Section: Coupled Lines With Guard Tracesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Comparisons of Improvements on Time-Domain Transmission Waveform and Eye Diagram for Flat Spirral Delay Line Between Two Types Guard Traces in High-Speed Digital Circuits

Shiue¹,

Shiu²

2011

PIER B

Self Cite

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show abstract

“…However, crosstalk arises, and it can distort waveform and reduce delay time of a pulse propagating in the line [1] . There are different approaches to crosstalk level reduction, for example, use of guard traces [2], but it increases the area of meander lines. Meanwhile, it is often required to minimize the area of meander lines.…”

Section: Introductionmentioning

confidence: 99%

Comparative Electromagnetic and Quasi–Static Simulations of a Shortpulse Propagation along Microstrip Meander Delay Lines with Design Constraints

Orlov

Gazizov

Zabolotsky

2016

Journal of Electrical Engineering

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A numerical analysis of microstrip meander delay lines is considered. Results of quasi-static and electromagnetic simulations are given. It is shown that when increasing a number of turns and proportionally reducing their length, distortions of a pulse signal in the line are reduced. At the same time, despite structure's electrical width increase, the agreement between the results of quasi-static and electromagnetic analyses is improved. Thus, it is demonstrated that when designing the microstrip meander delay lines with minimal distortions, the quasi-static analysis is relevant.

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Analysis of electromagnetic interaction between smooth and corrugated transmission lines by using a circuit model

Zhou

et al. 2022

IET Microwaves Antenna & Prop

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It has been proved that a subwavelength periodic microstrip structure can be used to suppress crosstalk between two adjacent microstrip lines and such a microstrip structure can be widely used in the application of high‐speed circuit systems. To further increase the accuracy of the equivalent circuit model of the subwavelength periodic microstrip line (SPML), we focus our attention on a single unit cell with the periodic structure, which is divided into several sub‐regions, and the circuit parameters in each sub‐region are analysed for setting up a complete circuit model of the unit cells. Then the details of the interaction between each sub‐region and the electromagnetic field are clearly indicated. The S $S$‐parameters of the circuit model accord well with full‐wave simulation results, showing a maximum deviation of 0.03973 dB for S21 and 0.1211 dB for S11 below 15 GHz. For the first time, we also study the frequency‐dependence of the mutual capacitance and the mutual inductance for analysing the coupling effect between an SPML and a conventional microstrip line (CML). The instantaneous impedance obtained by the full‐wave simulation of the SPML is consistent well with the experimental results.

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Guard Trace Design for Improvement on Transient Waveforms and Eye Diagrams of Serpentine Delay Lines

Cited by 24 publications

References 11 publications

Comparisons of Improvements on Time-Domain Transmission Waveform and Eye Diagram for Flat Spirral Delay Line Between Two Types Guard Traces in High-Speed Digital Circuits

Comparisons of Improvements on Time-Domain Transmission Waveform and Eye Diagram for Flat Spirral Delay Line Between Two Types Guard Traces in High-Speed Digital Circuits

Comparative Electromagnetic and Quasi–Static Simulations of a Shortpulse Propagation along Microstrip Meander Delay Lines with Design Constraints

Analysis of electromagnetic interaction between smooth and corrugated transmission lines by using a circuit model

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