嵌入式微带线（Embedded Microstrip）特征阻抗计算器
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Embedded Microstrip Impedance Calculator
Inputs
Trace Thickness
T
Substrate Height
H1
Substrate Height
H2
Trace Width
W
Substrate Dielectric
Er
Outputs
Impedance (Z):
Introduction
The embedded microstrip is a similar in construction to the microstrip transmission line. Modeling approximation can be used to design the embedded microstrip trace. By understanding the embedded microstrip transmission line, designers can properly build these structures to meet their needs.
Description
An embedded microstrip is constructed with a flat conductor suspended over a ground plane. The conductor and ground plane are seperated by a dielectric. There is also a layer of dielectric material above the conductor. One case of an embedded microstrip transmision line is a microstrip trace with soldermask.
Embedded Microstrip Transmission Line Models
Models have been created to approximate the characteristics of the embedded microstrip transmission line. The source for these formulas are found in the IPC-2141A (2004) “Design Guide for High-Speed Controlled Impedance Circuit Boards”
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