After establishing what a PCB transmission line is and talking about signal speed and propagation delay, last week, we discussed the critical length, the controlled impedance, and the rise/fall time of a PCB transmission line. Today, we are going to explain how to analyze a PCB transmission line using quantities, such as voltages and currents, and line parameters, such as resistance, inductance, capacitance, and conductance.
Category: Signal Integrity
Signal integrity primarily involves the electrical performance of the wires and other packaging structures used to move signals about within an electronic product. Such performance is a matter of basic physics and as such has remained relatively unchanged since the inception of electronic signaling.
PCB Transmission Line: Critical Length, Controlled Impedance and Rise/Fall Time
After explaining the importance of the signal speed and propagation delay in a PCB transmission line, we are now going to talk about the transmission line effects, the critical length, the rise/fall time and when the length of an interconnection is to be considered as a controlled impedance transmission line.
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The Importance of Signal Integrity in Mobile Devices
During DesignCon 2018, we interviewed many PCB experts. Antonio Ciccomancini Scogna is one of them. He works as a Principal Engineer at Samsung, and part of his mission is to solve signal integrity issues that can appear when designing printed circuit boards for powerful smartphones.
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Signal Speed and Propagation Delay in a PCB Transmission Line
Last week, we talked about what a PCB transmission line is. We are now going to focus on the technical side and discuss signal speed and propagation delay, two factors that have a great impact on a transmission line.
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What is a PCB Transmission Line?
A PCB transmission line is a type of interconnection used for moving signals from their transmitters to their receivers on a printed circuit board. A PCB transmission line is composed of two conductors: a signal trace and a return path which is usually a ground plane. The volume between the two conductors is made up of the PCB dielectric material.
How Limiting the Effects of EMI Improves Signal Integrity
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- Electromagnetic interference, or EMI as it is commonly known, is a major cause of signal integrity problems for PCBs. All electronic circuits generate EMI and all are affected by it.
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