Oct 12, 2023 · Er eff is an effective dielectric constant for microstrips, and its value lies between 1 and Er. Er eff = (0.64 Er + 0.36) It signifies that the signal speed on a circuit board is less than that in the air.

To use this tool, enter the values for trace thickness, substrate height, trace width, trace spacing, and dielectric constant in the calculator above and press the "calculate" button. The tool generates odd, even, common, and differential impedance as output values. See below for the definition of these impedances.

Mar 11, 2025 · Er eff is the effective dielectric constant for microstrips; its value lies between 1 and Er, and is approximately given by: Er eff ≈(0.64 Er + 0.36) (1c) With those formulas, we know that the speed of signals on a PCB is less than the signal speed through the air.

E_EFF: Effective electrical length of line or coupled section (angle units) (等效电长度) 主要用这几种：主要是介电常数、介质厚度、金属厚度、线宽（如果是差分则还有间距）

Er eff is the effective dielectric constant for microstrips; its value lies between 1 and Er, and is approximately given by: Er eff ≈(0.64 Er + 0.36) (1c) With those formulas, we know that the speed of signals on a PCB is less than the signal speed through the air.

er eff: k: lambda/4 [mm] [ How to use ] 1. Input the parameter of the circuit board and center frequency. 2. (1) When the characteristic impedance (Zo) of the line width (w) is calculated. Input w, and click on [ Analyze ] button.

微带线是最受欢迎的传输线形式，给定微带线线宽w，微带线厚度t，PCB板材的相对介电常数εr，这款计算器便可以快速地计算出微带线的特征阻抗Zo。 PCB采用FR4材质，相对介电常数为4.4。 PCB板厚一般为：0.4，0.6，0.8，1.0，1.2，1.5，1.6，2.0，2.4，3.0，3.4 ，单位mm。 PCB铜铂厚度一般分为：18μm（0.5oz），35μm（1oz）70μm（2oz），105μm（3oz），140μm（4oz）等。 例 …

[ How to use ] 1. Input the parameter of the circuit board and center frequency. 2. (1) When the characteristic impedance (Zo) of the line width (w) is calculated.

er eff: k : lambda/4 [mm] [ How to use ] 1. Input the parameter of the circuit board and center frequency. 2. (1) When the character impedance (Zo) of the conductor space (w) is computed. Input w, and click on [ Analyze ] button.

Feb 6, 2024 · In this article, we will focus on the analysis and properties of the FEXT. In general, every trace that carries an electrical signal (aggressor) has an electromagnetic (EM) field that distributes around it. The EM field amplitude decreases as the …