Resource Library

This webinar discusses techniques and tips to improve GaN HEMT PA design with Cree's Large Signal Models and AWR's Microwave Office.

This webinar focuses on the design of power amplifiers employing gallium nitride (GaN) high electron mobility transistors (HEMTs) to maximize power added efficiencies (PAEs) and how Microwave Office software can be used to optimize source and load-pull at both fundamental and harmonic frequencies.

This presentation seeks to explain the operation of solid state RF & Microwave amplifiers from an efficiency perspective.

This AWR webinar will discuss/demonstrate how its newly released Radar Library within the Visual System Simulator™ (VSS) design software allows designers of radar systems to account for radar signal generation, target, RCS and clutter modeling as well as signal processing. It will also be shown that AWR’s VSS can be used to model the RF architecture of individual phased array elements as well as to characterize the entire phased array.

This webinar, through the design and test of a 100 to 1000 MHz 100 W amplifier, will hope to show that with the latest generation of nonlinear device models, fast and accurate simulation tools, attention to detail and a good understanding of device operation, we can get very close to the predicted device performance on the first prototype.

During this webinar, Dr. Steve Cripps reviews the Marchand balun and its evolution from the seminal article by Mr. Marchand in the late 1940s to its implementation in modern microwave systems.

Planar microwave filters can be found in low cost PCB environments as well as higher performance thin-film technologies. The number of potential topologies to consider and the design trades to be made can be intimidating for the non-expert. Fortunately, there is a straightforward design flow that can efficiently address this design challenge.

This webinar provides an introduction to the theory and operation of radar. This webinar discusses these trends in enabling technologies as well as the evolution in phased-array systems.

This webinar will chart the reinvention of the Doherty power amplifier during the first decade of mobile communications and subsequent efforts to improve its Achilles' heel: linearity and bandwidth.

This webinar provides technical insight into the vital aspects of antenna design from an industrial and practical perspective.

This webinar discusses how AntSyn™, the automated antenna design, synthesis, and optimization tool in the NI AWR software portfolio, combines genetic algorithms with EM simulation to successfully develop a variety of antenna types for aerospace and telecommunication applications.

This webinar covers radar detection and ranging, pulse versus continuous wave applications, radar modulation, radar path budget (basic radar equation), radar range equation, range ambiguity and mitigation, maximum and minimum detectable range, and plan position indicator (PPI) and A-scope.

This free one-hour webinar will demonstrate the use of AXIEM EM simulation tools to create a 50% bandwidth planar Balun and harmonic balance simulation of a 200W GaN transistor to design a High Power Push-Pull Amplifier.

This recorded webinar is Dr. Steve Cripps’s MicroApp keynote from EuMW 2017 and discusses problems inherent in the widespread convention of ignoring the turn-on, or “knee” I-V function. Dr. Cripps presents a detailed analysis of common power amplifier (PA) modes that incorporate a knee function and reveals some surprising contradictions in mainstream PA strategies.

This webinar presents a design methodology for a broadband RF power amplifier (RFPA) for continuous wave (CW) operation using load pull for optimal impedance extraction, network synthesis, and electromagnetic analysis. Requirements for the amplifier were a minimum output power of 80 W over the operating bandwidth while maintaining saturated power flatness across the band. The design uses a commercially available packaged GaN on SiC device and the integrated design flow within NI AWR Design Environment, specifically Microwave Office, to produce a first-pass reference design. 

This webinar presents the application and design of a printed Balun suitable for L-band (1350-1850 MHz) push-pull power amplifiers. The design begins with an idealized circuit simulation in Microwave Office using closed-form transmission line models followed by a more rigorous 2.5D planar EM simulation conducted using AXIEM. Measured results and techniques for analyzing the performance of components with non 50 ohm terminations are discussed.

​This webinar presents some of the design challenges for incorporating antenna simulations for 5G applications into circuit and system simulators that are automatically coupled by the NI AWR Design Environment platform. System simulators must model phased arrays in order to support 5G and this presentation demonstrates how Visual System Simulator™ (VSS) system simulator provides a phased-array model, enabling designers to input the array’s geometry using either a standard layout pattern or one of their own creation.

Quadrature-balanced amplifiers hold a revered position in the historical development of broadband microwave amplifiers up to 20 GHz and beyond because they replaced unreliable traveling wave tubes (TWTs) with solid-state equivalents. 

Reducing product development time requires design tools that support and expedite all stages of development, from translating performance requirements into an initial design through to optimization, physical realization, and final verification.

This webinar highlights the counter-intuitive property in quadrature-balanced amplifiers that allows active load modulation of the output match presented to the balanced transistors.