White Papers

New Space Applications Add to Mix of Space-Qualified Crystal Oscillators

Application note on the selection of crystal oscillators to meet performance and price benchmarks for space-qualified products

The low-earth orbit (LEO) satellite realm has spawned an entirely new class of devices requiring innovations in crystal oscillator products to meet performance and price benchmarks. Manufacturers of space-qualified crystal oscillators, like Q-Tech, have developed a range of devices (XO, TCXO, VCXO, and others) to provide optimized price and performance for each orbital application. This paper will delve into the subject with the objective of providing an informed understanding of the elements that go into device selection.


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Basic RF Amplifier Measurements Using the R&S® ZNB Vector Network Analyzer and “SMARTerCal”

The family of ZNB vector network analyzers (VNA) from Rohde & Schwarz are the perfect instruments for analyzing RF amplifier small signal linear and non-linear performance. This application note presents information on how to configure and use the R&S® ZNB vector network analyzer to successfully make accurate and quick measurement of basic RF amplifier parameters.


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Wideband, High-Power GaN PAs in SMT Packages Preserve Electrical and Thermal Performance While Simplifying Design

This paper discusses gallium nitride as the preferred technology over gallium arsenide for facilitating power levels up to 10 watts and providing superior performance with simpler handling and assembly requirements. Topics include circuit design implications for these higher power levels, surface mount packaging for simplified design, performance examples and applications.


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Behavioral Modelling Challenges for RF System Simulation

Designing RF systems to operate with wideband modulated signals, like 5G and RADAR, or with a large number of circuits, like active antennas, is challenging. AMCAD Engineering introduces new behavioral models for power amplifiers that include low and high-frequency memory effects allowing robust and accurate DPD algorithm evaluation and validation.


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Behavioral Modelling Challenges for RF System Simulation

Designing RF systems to operate with wideband modulated signals, like 5G and RADAR, or with a large number of circuits, like active antennas, is challenging. AMCAD Engineering introduces new behavioral models for power amplifiers that include low and high-frequency memory effects allowing robust and accurate DPD algorithm evaluation and validation.


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Wolfspeed Large-Signal Models: Accurately Validating RF Designs

This article will provide a top-level view of Wolfspeed's large-signal models for GaN power transistors and their application in an RF design. The article will include an overview of Wolfspeed's GaN on SiC devices, the associated large-signal models, and their advantages versus real-world devices during the development process. The piece will continue with an overview of a typical design procedure and a case study, then conclude with a discussion of the resources available to designers and how to get started.


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