Featured Articles

  1. Duplex, Duplexer, Diplexer?
    1/30/2019

    One of the things all technical disciplines excel at is creating terminology that can trip up those who are not accustomed to speaking the language every day. This article takes the words “duplex,” “duplexer,” and “diplexer,” and defines their vastly different meanings.

  2. Aeronautical Radio Navigation Measurement Solutions
    1/30/2019

    This application note highlights various aeronautical radio navigation signals such as VHF omnidirectional radio range (VOR), instrument landing system (ILS) for glide slope (GS) and localizer (LLZ), as well as marker beacon (MB). Rohde & Schwarz test and measurement solutions for avionics navigation equipment are introduced based on application scenarios, including calibration, research and development, field tests, and transceiver testing.

  3. Aircraft Radome Characterization via Multiphysics Simulation
    1/29/2019

    This white paper covers the material characterization and optimization of a radar dome (radome) build out of carbon and fiberglass. Also discussed is the design and optimization of a radar antenna and the simulation of a radar integrated behind the radome and wing structure.

  4. Development Tactics And Techniques For Small Form Factor RF Signal Recorders
    1/29/2019

    This paper describes the engineering considerations and design techniques used to develop a small form factor rugged recorder that can handle the extremely high data rates associated with very wide bandwidth RF signal recording. It is intended to provide engineers with ideas on how to bring this capability into confined and often extreme environments while focusing on military specification compliance, SWaP and ease of use with confidence.

  5. Hexadrone Systems Uses Fischer Connectors For Rugged Miniaturization And Modularity
    1/24/2019

    Robotics and unmanned applications rely on connectivity solutions that combine miniaturization with ruggedness for high performance. Fischer Connectors translates these requirements into innovative custom solutions with the Fischer MiniMax Series connectors.

  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. Distributed Antenna System (DAS) For IoT, Cellular And Other Wireless Applications
    1/18/2019

    The Internet of Things (IoT) has continued to grow at a rapid rate in recent years. With the connectivity of more and more devices, it’s more important than ever that these devices can connect, communicate and meet the needs that users covet. Distributed Antenna Systems (DAS) are used to provide strong and reliable wireless connectivity in location where connectivity is a problem with standard wireless routers or cellular connectivity. This application note discusses the use of DAS for IoT, cellular and other wireless applications, and the benefits it can offer.

  8. Frequency And Phase Settling Time Measurements On PLL Circuits
    1/17/2019

    Frequency hopping is one of the most common methods to avoid interference and to increase security. This application note provides basic information about frequency and phase settling time measurements and how the measurement is implemented inside modern phase noise analyzers, complete with measurement examples and explanations.

  9. 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.

  10. Top Design Tips For The Automotive RF Front End
    1/11/2019

    With the astounding evolution of the automotive ecosystem, complicated computer systems are used to connect the vehicle and people to the outside world. This article examines the biggest challenges encountered when designing a connected vehicle and offers some solutions.