Feature Articles

  1. Emerging Communication Technologies Enabling The Internet Of Things

    Some connected things requiring global coverage and/or mobility will use cellular technologies, but most IoT devices will use noncellular technologies, sharing frequencies in unlicensed bands to communicate with each other and with IoT applications. 

  2. High-Power RF Pulse Generation And Measurement

    Until recently, Traveling Wave Tube Amplifier (TWTA) technology has been the only available option for pulsed field generation. AR now offers high-power solid state pulsed amplifiers at various frequency ranges and output power levels to meet several standards. This white paper presents some of the key features and benefits of AR’s new line of amplifiers, and how to generate high speed and accurate peak RF power measurement capabilities that are ideal for EMC testing, manufacturing testing/troubleshooting, amplifier design/development, and research.

  3. Antenna Basics

    This white paper describes the basic functionality of antennas. Starting with Hertz's Antenna model followed by a short introduction to the fundamentals of wave propagation, the important general characteristics of an antenna and its associated parameters are explained.

  4. How Accurate Is TDOA Geolocation?

    Time Difference Of Arrival (TDOA), also called multilateration, is a technique for RF emitter geolocation using three or more receivers with algorithms to locate a signal source from the different arrival times at the receivers. This article explains factors that can have an impact on overall TDOA accuracy.

  5. Machine Learning And RF Spectrum Intelligence Gathering

    To classify a signal in RF spectrum intelligence gathering, the user must recognize a specific pattern associated with the modulation. Additionally, to recognize a remarkable signal present in received data, the pattern must be distinguished from the noise. Pattern recognition is something that the human brain is good at, but it is more desirable to automate these applications for efficiency and to avoid errors cause by human fatigue. 

  6. Understanding NuWaves’ MILSPEC Product Qualification

    NuWaves’ products are designed to MILSPEC product qualification and to work in a myriad of applications, including ground, surface, and airborne systems. This article introduces the expertise NuWaves provides in creating compliant products, and covers their many testing capabilities.

  7. How To Keep Noise Out Of RF Circuit Power Supplies

    RF circuits generating radio frequency signals are very sensitive to power supply noise, which can significantly degrade the performance of a system if not controlled. This article describes potential sources of noise and addresses different techniques for handling them.

  8. Common Applications For Radio Frequency (RF) Filters

    A radio frequency (RF) filter is a special circuit that permits a signal of interest to pass through while attenuating any undesired signals. This article describes the different filter shapes, or responses, when plotted in the frequency domain, defines general terms in filter utilization, and covers common types of applications that use RF filters.

  9. Introduction To Electromagnetic Compatibility

    This white paper offers the reader a basic understanding of electromagnetic interference (EMI) and compatibility (EMC), various compliance standards and specifications, types of testing available for quantifying equipment performance, and basic approaches utilized to help meet application requirements.

  10. Ensuring Reliable, In-Tunnel Wireless Connectivity

    Bird Technologies offers an active Distributed Antenna System (DAS) that delivers all different technologies, bands, and services over a single strand of fiber, with excellent uplink network performance that is perfect for tunnel environments.