We previously quickly discussed signal reflection in our PCB Transmission Line series. This is an in-depth article about this very important topic that PCB designers should master. The first thing to remember is that reflections in transmission lines occur due to impedance discontinuity.
A transmission line should have a uniform characteristic impedance. Any variation or discontinuities to the impedance causes signal reflection and distortion. Continue reading “How Impedance Discontinuities Affect Signal Integrity”
Controlled impedance is not science fiction… Especially when you know how to calculate your controlled impedance traces. But, do you? Open our free Impedance Calculator – which will help you answer some of the following questions – and get ready to take the quiz!
During DesignCon 2018, Sierra interviewed Heidi Barnes, Senior Applications Engineer at Keysight Technologies. We asked her questions about power integrity, capacitors, and impedance.
Sierra Circuits’ free Impedance Calculator will help PCB designers calculate their trace widths, single-ended or differential impedances – for both microstrip and stripline models – and other parameters such as the dielectric height, the dielectric constant, and the trace thickness. The tool will also provide a guide for dielectric constant values for various PCB materials.
- 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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