Feature Articles

  1. Model-Based GaN PA Design Basics: What’s In An I-V Curve? (Part 2)

    Understanding the impact and nuances of I-V curves is a fundamental part of learning how to design GaN power amplifiers. Part 2 of the GaN design series introduces the basics of using nonlinear models to make the design process more accurate and efficient.

  2. Enabling 10 Gbps Cable Networks With Full Duplex DOCSIS 3.1

    Full Duplex DOCSIS 3.0, FDX for short, is one approach CATV operators are using to increase the capacity of HFC networks to support next-generation data requirements. This article discusses this new technology, its biggest challenges, and how MSOs and RF suppliers are bringing it to life.

  3. Why 50 Ohms?

    Have you ever wondered why engineers will quantify the ability of a 50-ohm matched module over a 75-ohm module? Where did the 50-ohms starting point come from? This article delves into the reasoning for making 50-ohms the standard measurement in the RF industry for testing amplifiers and module systems.

  4. Choosing The Right Connector For Communications Networks

    Several important considerations must be made when choosing a connector for communications systems. The choice between using classic interfaces such as the 7/16, N, or 4/1/9.5 connectors and the new interface 4.3-10 can have a significant impact on how a particular network will perform. This white paper will compare and contrast both classical and new connectors, and highlight their differences in terms of electrical and mechanical performance for specific applications.

  5. GaN HEMT Models 101: How Do Nonlinear Models Help With GaN PA Design? (Part 1)

    GaN power amplifier design requires some different approaches and thinking compared to LDMOS or GaAs. Learn how nonlinear simulation models, like those from Modelithics, can help speed up design processes by downloading Part 1 of a two-part introductory series.

  6. Calibration Techniques For Precision Power Measurement In Semiconductor Process Applications

    Radio frequency power measurement has been an important component of semiconductor processing since the time that plasma was first used for wafer processing. Power measurement was, and continues to be important, as radio frequency energy is used to excite the plasma, and the plasma characteristics are in large part determined by the excitation energy. In this article, we will discuss various means of measuring radio frequency power, along with their limitations. In addition, we will present the best calibration methods for radio frequency power measuring instruments.

  7. Emerging Trends In Wearable Technology Across Several Markets

    Wearable technologies are beginning to revolutionize consumer and business markets. This white paper provides an overview of the current trends in wearable technology, and discusses emerging applications with a focus on healthcare, industry, robotics, defense, and sport. Examples will be included on the impact of wearables in users’ and designers’ lives, and how they improve health, safety, convenience, and performance.

  8. Designing An LTE Base Station Antenna With The Finite Arrays Method

    LTE protocols for mobile data connections operate at various different frequency bands around the globe. This paper demonstrates how the finite arrays method (also known as Domain Green‘s Function or DGFM) may be used to model an LTE base station with three antennas operating at 1.8 GHz.

  9. 5 Things To Consider When Designing Fixed Wireless Access (FWA) Systems

    In the earliest stages of 5G, fixed wireless access (FWA) systems will be used to deliver gigabit internet speeds to homes, apartments, and businesses in a fraction of the time and cost of traditional cable/fiber installations. Like other technological advancements, FWA has its own design challenges and considerations. This article presents five considerations to keep in mind when designing FWA systems.

  10. How To Choose The Best RF Filter For Your Application

    There are numerous options available for RF filters used in communications systems, test and measurement setups, and RF module designs. This article presents a number of key parameters to help you choose the best RF filter for each specific application.