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March [Feedback] Feedback No Attribution Needed It has been brought to our attention that a reader of Microwaves & RF called into question the original artwork source for Figure 5 in our article, “Evaluate Test System Impedance Matching And Switch Quality,” originally published in September 2007. He stated we had “obviously” used a tool from his web site to create the figure. While we acknowledge that some similarities exist between the figures, we did not use his tool in... September 2007 [Test & Measurement] Evaluate Test System Impedance Matching And Switch Quality Impedance mismatches cause reflections, an unwanted effect in high-frequency test systems. For AC signals, any change in dielectric constant between materials can result in a change in characteristic impedances and an impedance mismatch. For example, when a sine wave travels from a 40.9-W transmission line and a 50-W load, some of its energy will be reflected back into the transmission line. Understanding how and why signals reflect can lead to improved... |
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