Search for tag: "reflection"

Active Load Pull System Demo from R&S

Rohde & Schwarz demonstrates an active load pull system using a 4 channel, 8 GHz oscilloscope at IMS 2024 in Washington DC.

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Fixture Characteristic Requirements for Automatic Fixture Removal Plug-in

Automatic Fixture Removal software may be used to remove the effects of fixturing from the measurement of a Device Under Test. It's fast and easy to use but it is imperative to understand the…

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How to Optimize Lossy Long Cable Measurements with a VNA

Sometimes the RF reflection measurement which needs to be made is on the end of a lossy coaxial cable. How can this be done? Is it even possible? The answer is… maybe. The best answer is to…

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Time Domain Reflectometry Measurements with a Vector Network Analyzer

Time Domain Reflectometry (TDR) has traditionally been performed using a fast oscilloscope and a very sharp impulse or step type excitation. Reflections from the excitation are measured at the source…

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Non-conventional Calibration

There are many different methods that can be used to calibrate a VNA. CMT’s Senior RF Engineer Brian Walker discusses various forms of calibration and the benefits of each.

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Focus Beam Fundamentals

In this video, John Schultz, Chief Scientist at Compass Technology Group and material measurement expert, discusses how to measure the free space properties of materials using their Focus Beam System…

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RWW 21 - Measurement and Characterization of High Power Devices for mmW Applications

Tekamul Buber, Senior Principal Engineer at Maury Microwave, discusses the measurement methods, calibration essentials, and load pull requirements for high-power mmW device characterization,…

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Fully-active harmonic load pull using R&S ZNA

Dr Jonas Urbonas provides an overview of fully-active harmonic vector receiver load pull using IVCAD and a 4-source ZNA. He starts with explaining the motivation and challenges, proceeds to…

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What is a Smith Chart?

Brian Walker, Senior RF Design Engineer at Copper Mountain Technologies looks at how a Smith Chart is simply a special case of the polar plot and how the real and imaginary axes are constructed in…

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Reflection vs Transmission Accuracy in Vector Network Analyzer Measurement

Why is it that Reflection measurements are typically only specified to -35 dB while Transmission measurements are valid to -85 or -90 dB or more? Brian Walker, Senior RF Design Engineer at Copper…

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Epsilometer Principles of Operation

John Schultz, Ph.D., of Compass Technology Group describes the principles of how the new Epsilometer operates. Epsilometer Dielectric Materials Measurement solution is a cost-effective,…

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