# Asymmetric stripline impedance calculator

• Basically I am trying to simulate an asymmetric stripline with the following stack: GND MSUB1 (Er,Thickness) 3.66,0.76mm METAL stripline MSUB2 (Er,Thickness) 3.54, 0.1mm GND For simplicity we can ignore the metal thickness. Now whenever I make my simulation, a stripline with line width of 0.17mm results in 50 ohm (at 12GHz), as displayed in my ...
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Stripline Inductance Calculator

Impedance-Calculator. With the Multi-CB impedance calculator, you can calculate the approximate impedance dimensioning of your PCB / high frequency circuit board. These are pure estimates to obtain a guideline. The surface finish is neglected. For exact impedance calculation, we recommend the software from Polar Instruments.
• An asymmetric stripline is constructed between two plane layers, where the distance above the trace is not equal to the distance below. Factors that influence the impedance calculation include:-Trace thickness (t) Height above trace (h a) Height below trace (h b) Trace width (w) Substrate dielectric (ε r)
• I am trying to calculate the differential impedance of a differential pair in a 4-layer PCB as follows: Layer: Low speed signal Layer: Power plane Layer: Differential pair Layer: Ground plane I am
• An example of an asymmetric stripline is a 4 layer pcb were a trace on layer 3 is referenced to both layer 1 and layer 4. The trace is closest to layer 4 and layer 4 has the dominant effect on the transmission line impedance, but layer 1 would still affect the characteristic impedance of this trace. Asymmetric Stripline Transmission Line Models

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May 01, 2006 · 2. Define the cross-section for each layer, whether microstrip, symmetric or asymmetric stripline or broad side coupled stripline. 3. Select the laminate materials and the dielectric constant of the layers based on dielectric loss spec and cost. 4.

The more complex formulas for characteristic impedance, and attenuation on the line are given in . The Model. Shown here is a two-port stripline transmission line constructed using copper conductor in CST Studio Suite. The model is simulated in the Time Domain Solver in the frequency range of 5 – 15 GHz.

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As for your calculations you have used an asymmetric stripline calculator while you said about antenna on the top of PCB and you also mentioned air. It is important to use the right calculator.

Differential Impedance Calculator V 3.5 Screenshots . Configuration Selection Screen . Typical Microstrip Screen. Typical Embedded Microstrip screen . Typical Stripline Screen . Typical Edge-Coupled Asymmetric screen . Typical Broadside Coupled screen. Return to Differential Calculator page

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There are several methods for calculating the impedance of a single asymmetric stripline. Some calculators use a difference between logarithmic functions, another uses a power function with approximately 6th order dependence on a number of the geometric parameters, and there are undoubtedly other formulas that can be found through an internet ...

Intercept Technology's Impedance Calculator allows engineers specializing in the design and layout of printed circuit boards to calculate the total electrical impedance for the following transmission line types: Microstrip Embedded microstrip Edge-coupled microstrip Symmetric stripline Asymmetric...

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Asymmetric Stripline Impedance Calculator. Join our Community of 625,000+ Engineers. Register. This calculator is designed to find the characteristic impedance of an asymmetric stripline - a flat conductor between two ground planes.

For the stripline of Figure 2 with a symmetrically centred track of zero thickness, Cohn has shown that the exact. value of the characteristic impedance is. Most of the calculations were published 15 to 20 years ago, when the principal calculator was a main-frame computer. Hence the need for...

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Asymmetric stripline impedance equation. • Z0 = transmission line impedance • b = trace to plane spacing. Even with the narrowest production trace width, stripline layers cannot achieve high impedances. In all cases, high impedances require very thick dielectrics...

Dimensions—Asymmetrical Case Volkan Akan, Student Member, IEEE, and Erdem Yazgan, Member, IEEE Abstract—In this paper, fast, accurate, and simple analytic closed-form expressions are presented in order to calculate the quasi-TEM parameters of multilayer elliptical coplanar stripline (CPS), multilayer cylindrical CPS, and multilayer CPS ...

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impedance calculation is needed for an arbitrary geometry the best bet are the numerical methods. These methods work by successive numeric approximations applied to some deceptively simple equations satisfying the boundary conditions imposed by the geometry (metal and dielectric).

Abstract: There are two ways to calculate the wave impedance of a stripline: from known electric and magnetic field components inside the line, or from known capacitance per unit length of the line. A simplified method of calculating the capacitance of asymmetric microstrip line is presented in this paper, using the method of conformal mapping.

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Impedance Test System. CITS measurement systems have been in use with leading PCB manufacturers throughout the world since 1991 and Polar is now recognised as a world leader in production line impedance testing. Surface Microstrip Coated Surface Microstrip Embedded Microstrip Symmetric Stripline Offset (Asymmetric) Stripline Surface Edge ...

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Dec 16, 2013 · The circuit is made up of an MAX4104 low-noise device, and an MAX4144 high speed amplifier. The overall circuit is a unity gain inverter, with the summing node located at the junction of three 10 kΩ resistors.
There are several methods for calculating the impedance of a single asymmetric stripline. Some calculators use a difference between logarithmic functions, another uses a power function with approximately 6th order dependence on a number of the geometric parameters, and there are undoubtedly other formulas that can be found through an internet ...
Design Guide for High-Speed Controlled Impedance Circuit Boards 1 SCOPE This guide is intended to be used by circuit designers, packaging engineers, printed board fabricators, and pro-
Mantaro and HughesCircuits comes up with very different results for "asymmetric stripline", in my case 49.7 ohms vs. 67.9 Ohms, respectively. I think the latter is really off. What is not included in these calculator inputs is the effect of soldermask. Most likely, the programs assume no soldermask, but that is a guess.