Rohde & Schwarz (R&S) has been in business for 80 years, and is one of the pre-eminent test and measurement companies. As such, they have a lot of expertise that they can share with electronics engineers and amateur radio operators.
Here are some app notes and white papers that you might find interesting:
Introduction to RF Design. R&S says that this is the most dowloaded paper on RF design. This white paper provides insight into how these technologies work, and, after reading this paper you’ll have practical knowledge on the entire process for designing an RF system.
Measuring with Digital Storage Oscilloscopes. This educational note covers the theory and practice of digital storage oscilloscopes based on concrete measurement examples that address authentic everyday tasks. The theoretical portion of this paper begins with an explanation of the basic operating concepts for digital oscilloscopes, followed by a discussion of the most important parameters to be considered when setting up and performing the exercise measurements. The final portion of the theoretical section prepares the reader for the subsequent practical exercises containing detailed measurement tasks. These exercises are intended to demonstrate and reinforce the knowledge gained in the theoretical portion. The exercises build upon one another demonstrating measurement tasks that are encountered frequently by engineers in their daily work.
Spectrum Analyzer Fundamentals – How modern spectrum analyzers are designed and how they work. Spectrum analyzers serve as an essential RF test tool for characterizing signals and making frequency measurements. In this primer you will learn about the basics of spectrum analysis, time and frequency domains, different types of spectrum analyzers, and how to make different types of measurements with a spectrum analyzer.
When you click on the link, you may be asked to give your contact info, but it’s worth it. What I do, when asked to give a company name, is to simply type in my call sign. I’ve never had a Rohde & Schwarz salesman contact me. :)