Feature Articles

  1. Harmonic Injection Doubles Ultra-Wideband TWT RF Output

    Using harmonic injection on an ultra-wideband TWT is a relatively new concept that works to cancel the naturally-generated second (and/or third) harmonic within the TWT, and therefore recover the available beam power back into the low-end fundamental frequencies. 

  2. The Road To 5G

    Meting 5G requirements may seem daunting, but simulation already can be used to develop understanding and explore innovative solutions. FEKO offers comprehensive solutions for device and base station antenna design, while WinProp will determine the requirements for successful network deployment.

  3. Using Microwave And Millimeter Wave Radiometers

    Microwave radiometric sensors are devices used to detect electromagnetic energy. This white paper expresses the reasoning for certain radiometer calibrations and other modes of operation in regards to the sensor’s subsystems.

  4. Choosing Blocking Capacitors — It’s More Than Just Values

    Capacitors often are used to create filters, generate DC protection, and build bypass networks. This article discusses how to improve RF performance by using fewer capacitors that block DC and pass AC current, and how to choose these capacitors based on real world performance.

  5. Mall Communication Solutions

    At shopping malls, consumers also are able to find various types of entertainment, dining options, spa services, childcare, etc. This white paper presents Bird’s Distributed Antenna Systems (DAS) solution for meeting these wireless communications difficulties.

  6. RF Power Measurements In The Field

    Measuring RF power in a field environment can be accomplished accurately and inexpensively. It also involves a great deal of care and proper training to ensure equipment is accurately measured. Either way, accurate field power measurements will ensure transmitting equipment is operating properly.

  7. Rotman Lens Design And Simulation In Software

    Since its invention in the early 1960s, the Rotman Lens has proven itself to be a useful beamformer for designers of electronically scanned arrays. Inherent in its design is a true time delay phase shift capability that is independent of frequency and removes the need for costly phase shifters to steer a beam over wide angles. This article uses the developed software to design and analyze a microstrip Rotman Lens for the Ku band.

  8. 5G Or .11ax?

    Why are names such as Wi-Fi, Bluetooth, and LTE more well-known than 5G or Zigbee when they all play a huge role in our daily lives? This paper offers a different perspective on the “battle” between these types of technology, and how to leverage each to exploit the most advantages.

  9. Considerations For Connector Design In Mobile And Patient-Worn Medical Devices

    In medical device design, everything must be safe for both the patient and the operator, so reducing any risks in the designer’s approach is extremely important. This white paper discusses the rising need for mobile and patient worn devices, and offers recommendations on the proper approach to designing interconnect solutions for these applications.

  10. The Increasing Impact Of Speed And Miniaturization On Rugged Connector Selection

    Design engineers are challenged to pump increasing amounts of data through smaller and smaller spaces. This paper provides a step-by-step process for rugged connector selection that takes the new realities engineers face today into consideration, such as speed and miniaturization.