Crosstalk analysis of multi‐microstrip coupled lines using transmission line modeling

Abstract

This article presents a new analytical method to predict crosstalk of a homogeneous terminated two microstrip coupled lines over a ground plane using transmission line theory. The derived formula is frequency and location dependent, which can be used to quickly estimate the crosstalk of a coupled line. Also, the effect of the geometrical parameters of the lines and load are included in the derived formula. Presented method can be used for the other types of coupled lines including lossy or lossless lines. To verify the accuracy of the introduced method, a few microstrip coupled line structures with different geometrical parameters are considered numerically and experimentally. The results of crosstalk based on the proposed analytical methods, simulation study using high frequency structure simulator and those obtained by measurements are reported and compared with each other. It is shown that our proposed method accurately estimates the amount of crosstalk for a two microstrip coupled lines. K E Y W O R D S coupled microstrip line, crosstalk, transmission line (TL)

Development of a Non-Iterative Macromodeling Technique by Data Integration and Least Square Method

“…The coupled structures are widely used in microwave engineering [32][33]. As the fourth example, a coupled microstrip line using TLY062 substrate with relative permittivity of 2.2, the thickness of 1.56 mm, and loss tangent 0.009 is considered [34]. The length and width of the board is 50 mm.…”

“…The culprit and victim strip width are set to 4.8 mm, and the distance between two traces is about 0.5 mm. The measured far-end crosstalk is regarded as original data [34]. The fabricated of the understudying structure is shown in Figure 8 [34].…”

“…The measured far-end crosstalk is regarded as original data [34]. The fabricated of the understudying structure is shown in Figure 8 [34]. The magnitude and phase of rational approximation using the proposed method with N=9, 10, and vector fitting algorithm with N=14 poles are shown in Figure 9.…”

Crosstalk analysis of uniform and nonuniform lossy microstrip‐coupled transmission lines

“…Complex propagation constant is represented by γ = α + jβ and for lossy line α is the attenuation constant and β is phase constant of the propagated wave along the coupled‐line. For a coupled transmission line that conveys TEM or Quasi‐TEM waves, voltage and current signals are related by Equation …”

“…Variety of methods has been proposed for modeling the crosstalk of multiconductor transmission line (MTL) . These methods categorized into two numerical and analytical groups.…”