Feature Articles

  1. What is AESA RADAR Technology? - Advantages, Challenges, And Future Trends

    Active Electronically Scanned Array (AESA) systems comprise an array of antennas that form a beam of radio waves that can be aimed in different directions without physically moving the antennas. What does the future have in store for this technology, especially as it becomes more advanced and critical for maintaining military advantages? This article discusses the advantages of AESA, as well as the challenges it presents, and upcoming and future trends.

  2. Design Guidelines For Schottky Rectifiers

    The known limitations of Schottky rectifiers can be measured and controlled, allowing for wide use in applications with switch mode power supplies. This application note differentiates the fiction from facts regarding this type of rectifier, and offers guidelines for designing a Schottky rectifier at optimal performance level and costs.

  3. Power MOSFET Basics: Understanding Gate Charge And Using It To Asses Switching Performance

    This application note defines the fundamental behavior of MOSFETs, both as standalone devices and as switching devices implemented in a Switch Mode Power Supply (SMPS). Additional topics include the switching behavior of a MOSFET when used in a practical application circuit, how to choose the right device from minimal information on a datasheet, as well as several methods for assessing the MOSFET performance.

  4. Power Inductors 101

    Power inductors are defined loosely as inductors designed to handle more than one amp of current. They are typically used for energy storage in DC/DC converters or high noise filter applications, including motor speed control, adjustable lighting, DC power conditioning, and more. This article delivers the basic information for understanding power inductors, their uses, and benefits.

  5. The Easy Way To A 1 Gbps RF Front-End On Smartphones

    This Qorvo article highlights the need for higher order modulation, carrier aggregation, and 4x4 MIMO technologies in the journey to faster download speeds, and how to add 1 Gbps front-end modules to smartphones.

  6. Remotely Monitoring Mission Critical Positive Train Control Networks

    Positive Train Control (PTC) is an advanced communications system to minimize train accidents by automatically controlling train activity. This includes real-time monitoring of static and dynamic conditions that require the train to slow or stop. The On Board Computer (OBC) monitors these conditions, and in the event of an improper response from the engineer, the OBC takes control and slows or stops the train within a safe braking distance from the restriction. Anritsu was selected to meet the interference study technical challenge. Anritsu’s MS27101A, 9 kHz - 6 GHz, 1⁄2 rack mount Remote Spectrum Monitor™ web-based automated data capturing hardware and Vision™ database software platform were selected as the unique, single supplier solution capable of meeting the interference study technical challenges.

  7. 5 Common Causes Of Frequency Drift In Crystal Oscillators And Their Solution

    Setting the initial frequency of an oscillator to the most precise values can be frustrating when you realize that the oscillator will not be able to maintain that frequency. This article covers multiple sources of frequency instability, and presents the Ultra-Stable OCXO as a fix-all solution.

  8. Combining Near-Field Measurement And Simulation For EMC Radiation Analysis

    Failing a required EMC test at the end of a product design cycle can imply a costly product redesign and drastically set back the time-to-market. This white paper outlines a process that enables required EMC testing to be performed much earlier in the design cycle.

  9. Satellite M2M, The IoT, And The Public Sector

    As machine-to-machine and Internet of Things technologies grow congruent with daily life, satellite-based IoT is increasingly relevant to the mix. Given that IoT devices are primarily used to eliminate the need for human interface, as well as provide real-time automated monitoring and control across distances, it’s often essential to enable its functioning in remote regions that lie outside the range of terrestrial network coverage.

  10. High-Efficiency Front-End For Pico And Modular Large Base Stations At LTE Bands 1 And 7

    The key to improving energy efficiency lies, fundamentally, in the use of active antennas. However, duplex operation of cellular phones greatly distorts the desired performance of active antennas. To correct this, one must deploy self-diplexed antennas.