Featured Editorial

  1. 5G Core Network – Architecture, Network Functions, and Interworking
    7/15/2019

    This article is dedicated to describing the main components of the 5G Core Network -- as defined by the 3GPP – including an overview of the architecture, a description of the key individual network functions, and an example of 5G interworking with LTE.

  2. A Look At 3GPP Rel-16: LTE and 5G-NR Enhancements
    4/29/2019

    This article discusses the ideas and enhancements currently being developed for 3GPP Release-16, with a focus on selected Rel-16 work items and study items. These enhancements cover not only 5G-NR, but also LTE, which is being advanced in parallel.

  3. Why You Should Use A Product Development Process
    4/28/2019

    Applied poorly, systems turn into bloated regulations that no one trusts or uses effectively. Applied properly, the right systems improve the efficiency and effectiveness of product development teams.

  4. Understanding 5G Millimeter Wave Beamforming Test
    4/15/2019

    This article explains beamforming in the context of 5G NR specifications, and introduces beamforming characterization and beamforming verification test.   

  5. A Fully-Integrated 3.5GHz Single Chip GaN Doherty PA For sub-6GHz 5G
    4/8/2019

    This article describes an S-band, packaged Doherty PA MMIC for use in 5G base station transmitter applications. The design, simulation, assembly, and subsequent measurement of the power amplifier IC are described.

  6. System-Level LO Phase Noise Model For Phased Arrays With Distributed Phase-Locked Loops
    1/20/2019

    By building upon known phase-locked loop modeling methods, and an assessment of correlated vs. uncorrelated contributors, an approach to track distributed PLL contributions across frequency offsets is presented.

  7. Power Amplifier MMICs For mmWave 5G
    1/14/2019

    This article looks at the semiconductor process and SMT packaging options for the realisation of power amplifier (PA) integrated circuits (ICs) operating at millimeter wave (mmWave) frequencies. It also presents examples of 5G mmWave SMT packaged PA designs.

  8. CWDM vs DWDM: What’s the Difference?
    12/16/2018

     A great deal of confusion exists surrounding RF over fibre via coarse wavelength division multiplexing (CWDM), or dense wave division multiplexing (DWDM). This article aims to clarify the differences between the two methods, as well as discuss the challenges associated with both technologies.

  9. Boron-Doped CVD Diamond As An Electrically Conductive Heat Spreader In RF/Microwave Applications
    12/3/2018

    Viewed over a wide spectrum of frequencies, BDD shows promise across a range of electronics, from solid state RF PAs and advanced application specific integrated circuits (ASICs), to 5G wireless and phased array radar.

  10. EMI Filtering For High-Reliability Applications
    11/21/2018

    Electromagnetic interference (EMI), or electrical noise, is generated by everything from cellphones to solar flares and can make accurate signal transmission as difficult as trying to have a clear conversation in a noisy room. To improve signal clarity in electronic circuits, device designers turn to EMI suppression filters.