Feature Articles

  1. Handling And Adjustment Of Integra Technologies GaN-on-SiC HEMT Evaluation Kits

    Integra Technologies makes their GaN-on-SiC HEMT evaluation kits available for loan to their customers. This application note discusses how to properly handle and adjust these kits for optimal use in each application.

  2. Model-Based GaN PA Design Basics: The What And Why Of Intrinsic I-V Waveforms (Part 3)

    Understanding the impact and nuances of I-V curves is a fundamental part of learning how to design GaN power amplifiers. This is the third part in an ongoing series looking at the importance of GaN HEMT nonlinear models for rapid power amplifier (PA) design success.

  3. Understanding Microstrip Filter Topologies

    The behavior of transmission lines in RF systems becomes important when the transmitted frequency’s wavelength is short enough that the length of cable becomes a significant part of a wavelength. Microstrip consists of a conducting strip separated from a ground plane by a dielectric substrate. 

  4. New MQ-9 Reaper Capability: Automated Landing And Take-Off

    In 2018, the MQ-9 Reaper unmanned aerial vehicle (UAV) added the capability to take off and land automatically. This new automated feature will help expand the US Air Force’s (USAF’s) mission capability, enhance combat effectiveness and increase flexibility.

  5. Implications Of Using kW Level GaN Transistors In Radar And Avionic Systems

    This white paper examines the effect of using normal Class A/B bias for kW-level GaN and LDMOS transistors used in radar and avionic systems.

  6. 5G Extreme Requirements: End-To-End Considerations

    Compiled by The Next Generation Mobile Networks (NGMN) Alliance’s 5G Extreme Requirements task force – which includes contributors such as Jaya Rao, Huawei; Joachim Sachs, Ericsson; Alan Stidwell, David Lister, Vodafone; and Javan Erfanian, Bell Canada -- this white paper aims to highlight what implications and trade-offs related to the delivery of new 5G services are relevant for mobile network operators.

  7. ESD Design Strategy For Mobile Devices: Using System-Efficient ESD Design (SEED) Methodology

    The electrostatic discharge (ESD) phenomenon is a natural occurrence that can destroy sensitive electrical circuits, even in small amounts. Part 1 of this paper explains why system-level ESD protection matters, providing insight on test models and strategies to improve system-level ESD protection in mobile devices.

  8. Designing For EMI Testing: Improving Time To Market With Oscilloscopes

    Nearly 50 percent of products fail EMC compliance the first time. To address this, EMI testing should be performed during the product design cycle. This guide covers three important steps in using R&S RTO/RTE digital oscilloscopes to perform EMI testing in the product design cycle.

  9. The No-Compromise Solution: Signal Generation At Its Best

    R&D engineers must often push the limits of what is technically feasible to build a product with the best possible characteristics. When working with large test setups with high cable losses, the signal source needs high output power to avoid using performance degrading external amplifiers. Unfortunately, most commercially available signal generators have entailed some sort of compromise and could not simultaneously satisfy all the desired criteria. This white paper introduces Rohde & Schwarz’s R&S®SMA100A and R&S®SMF100A RF and microwave signal generators, and illustrates typical applications where the instrument’s strengths come into play.

  10. CMW Cards: Enabling Mobility And Roaming Testing For Connected Cars

    A key part to achieving autonomous driving is having connectivity to a backend network. A moving car will experience varying RF conditions, which will affect the data connectivity. This paper covers use of R&S CMW cards to emulate vehicle-to-network scenarios and test data connectivity in a lab environment.