Feature Articles

  1. 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.

  2. Role Call: Principal Systems Design Engineer

    Role Call is a series on RF Globalnet that will explore each of these topics with a “peek behind the curtain” at different jobs and career paths in the RF and microwave industry. Our most recent subject is Trushal Vijaykumar Chokshi, the Principal Systems Design Engineer at SiTime. Trushal specializes in the development of high-throughput systems for micro-electro mechanical systems (MEMS) resonators and oscillators, relying on a background in physics and electrical engineering with a focus on MEMS and analog circuits.

  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. 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.

  5. Millimeter-Wave Technology Overview

    The millimeter-wave (mmWave) technology market is on an upward trend, continuously adapting to new applications. This Q&A covers the basics of mmWave technology and presents what dB Control offers in this market.

  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 the ambitious dream of autonomous driving is having connectivity to a backend network. A moving car will experience varying RF conditions which in return will affect the data connectivity. Testing real life scenarios in a lab environment is not only imperative for the safety of the passengers, but is necessary to ensure flawless autonomous driving. This paper covers how you can use R&S®CMW cards to emulate vehicle-to-network scenarios and test data connectivity in a lab environment.