Feature Articles

  1. Understanding Plug-n-Play Instrument Drivers
    3/21/2019

    AR RF/Microwave Instrumentation offers a series of Plug-n-Play Instrument drivers for their amplifier, system controller, and field probe products for simplifying integration into customer controlling software.

  2. The Week In 5G: 3/12/2019 – LG Uplus and Hanyang Test 5G Autonomous Car; Sprint And T-Mobile Tout Merger Benefits For Rural America
    3/12/2019

    Plus, Vodafone confirms a big 5G rollout in the UK, Malaysia regulators take a hard look at 5G security, Portland, OR, wants assurances from the U.S. FCC that 5G is safe, and more, all in this edition of the Week in 5G.

  3. Filter Shape Factor And Selectivity
    3/8/2019

    This article discusses how a real-world filter’s deviation from ideal behavior needs to be quantified and that shape factor and selectivity are tools to use in this process. It touches on how both resonator Q and the filter order (number of resonators in a design) can influence a filters behavior in the transition band. 

  4. Unlocking Full Duplex DOCSIS® 3.1 Architecture With DPD And 75-Ohm CATV Switches
    3/8/2019

    The CATV industry is looking to set new standards for the next generation of cable ecosystems, including the Full Duplex (FDX) DOCSIS 3.1, which promises to deliver 10 Gbps data rates upstream and downstream on existing hybrid fiber-coaxial (HFC) systems. Achieving FDX will require highly linear devices enabled for digital predistortion (DPD) — including 75-ohm CATV switches. This article explores how DPD works in CATV optical nodes, as well as some considerations for selecting the right switch for each application.

  5. The Week In 5G: 3/5/2019 – Dell Sees 5G Rollouts In Targeted Use Cases, Trump Campaign And White House Flub 5G Strategy Messaging
    3/5/2019

    Plus, Nokia and KT expand their 5G rollout collaboration, Sprint touts its 5G strategy over competitors' approaches, AT&T rushes to trial its 24 GHz gear before the FCC's 24 GHz auction, and more, all in this edition of The Week in 5G. 

  6. Understanding 5G Coexistence Testing Requirements
    2/26/2019

    In the near future, 5G New Radio (NR) will need to have ultra-fast download speeds, reliable low latency connections, and connectivity to billions of new IoT devices coming online. Spectrum is a key enabler to meeting these goals. However, today’s spectrum is already crowded and the introduction of new operating bands increases the potential for side-band interference, and sometimes overlap with previous spectrum allocations. Device designers must ensure that new 5G NR designs meet target performance and coexist with 4G, Wi-Fi, and other wireless communication systems sharing overlapping spectrum. This white paper discusses the issue of 5G spectrum coexistence issues and presents techniques for minimizing interference and operating in shared spectrum.

  7. The Week In 5G: 2/26/2019 – Sprint Rolls Out 5G In May, Device Makers Strut 5G Tech At MWC
    2/26/2019

    Plus, Facebook and a tech startup team to tackle traditional internet providers, white hat hackers expose some 5G vulnerabilities, the EU pledges to take the lead on 5G cybersecurity, and more, all in this edition of The Week in 5G.

  8. Aperture Tuning: An Essential Technology In 5G Smartphones
    2/12/2019

    Antenna aperture tuning is essential to enable smartphones to operate efficiently over the ever-increasing range of RF frequency bands and support the transition to 5G. Smartphones need more antennas to support growing RF requirements such as new 5G bands, MIMO, and carrier aggregation (CA), but there is less space for these antennas due to changes in smartphone industrial design. As a result, antennas are becoming smaller, potentially reducing antenna efficiency and bandwidth. Aperture tuning compensates for this problem by allowing antennas to be tuned to operate efficiently on multiple bands and increasing Tx and Rx performance by 3 dB or more.

  9. Integrated Circuits (ICs) And Component EMC Testing
    2/12/2019

    Those who produce IC products for demanding electromagnetic environments must take precautionary measures to test and pass all regulatory EMI and safety requirements. This white paper explores these standards and safety requirements and offers guidance for ensuring that IC products meet them.

  10. Understanding AR’s Free emcware
    2/12/2019

    AR’s emcware is a user-friendly, comprehensive electromagnetic compatibility (EMC) test software package that includes automation routines for radiated immunity (RI), conducted immunity (CI), radiated emissions (RE), and conducted emissions (CE).