Feature Articles

  1. The Week in 5G: 6/11/2019 — Huawei To Handle Russia’s 5G Rollout, U.S. FCC Auctions 24 GHz and 28 GHz Spectrum
    6/11/2019

    Also, China’s government green-lights its major state-owned carriers to begin 5G network rollouts; Qualcomm And Lenovo claim the world’s first prototype 5G PC; telco Three announces its intent to enter the UK 5G market this year, and more, all in this edition of The Week in 5G!

  2. Simulating Performance Of A Low Cost, Chipless RFID System In XFdtd
    6/10/2019

    In this example, an RFID tag system is examined using XFdtd EM Simulation Software to validate its performance for use in situations where high volume usage requires very low-cost components. The RFID tag is constructed as a microstrip device with spiral resonators tuned to specific frequencies that represent separate bits of the tag code. The resonators are connected to two cross-polarized ultrawide band monopole disk antennas which receive and transmit the signal from the scanning system. The system is demonstrated with a design capable of encoding six bits that are formed by resonances 100 MHz apart between 2.0 and 2.5 GHz. The testing is done using two cross-polarized log period dipole array antennas which transmit and receive the signal from the RFID tag.

  3. Qorvo’s 100 MHz ET For 5G
    6/5/2019

    As cellular technology advances and modulation complexity increases, the requirements on RF components have become more and more stringent. RF Power and linearity demands have continued to rise opposing the strong desire for decreased current consumption, which directly affects both battery life and thermal performance. 5G is no exception. 5G’s specifications impose a difficulty multiplier, creating unprecedented RF challenges for our industry.

  4. Using Broadband Bypass Capacitors For High Speed Optical And mmWave
    5/31/2019

    This article examines the use of broadband bypass capacitors for use in microwave and mmWave frequencies, especially those used in RF applications and optical communications.

  5. The Price Of Reliability: Considerations For Buyers
    5/31/2019

    By making a small component change, one could extend an implantable medical device's reliability and lifespan by preventing battery related complications. This paper explores the cost of device failures and discusses how proper testing and supplier considerations can help capacitor sourcing.

  6. The Future Of IoT Will Require LTE Connectivity
    5/22/2019

    As the promise of a wirelessly connected world becomes a reality, there is a growing need for LTE technologies that address low cost, long battery life, security, and reduced complexity — all critical components for IoT.

  7. Introduction To Qorvo’s 100 MHz ET For 5G
    5/22/2019

    With the rise in handset RF complexity, envelope tracking (ET) has become the optimal choice for RF power amplification in mobile handsets. This application note discusses Qorvo’s 100 MHz envelope tracking integrated circuit (ETIC) for 5G applications.

  8. Introduction To Specifying RF/Microwave Power Amplifiers For EMC Testing
    5/17/2019

    Historically, amplifier selection for Electromagnetic Compatibility (EMC) testing was based mainly on tribal knowledge and information scattered across the EMC industry. This application note provides the EMC test engineer or technician with the information necessary to make the proper decision.

  9. IoT Standards: The End Game
    5/15/2019

    It can be confusing to try to pick standards while waiting for 5G or NB-IoT deployments. This article answers the question of which standards are best to use and looks ahead at the future of wireless technologies to help gain a better perspective as to where things are headed.

  10. How Big Is A Wavelength?
    5/13/2019

    In traditional arrays an inter element spacing of less than half the wavelength (<λ><λ/2) is required to mitigate grating lobes. To understand the shift in system design this brings about, this paper looks at the physical scale of different wavelengths compared to some familiar references.