Feature Articles

  1. Role Call: Senior Hardware Engineer

    RF Globalnet's Role Call series offers a “peek behind the curtain” at different jobs and career paths in the RF and microwave industry. Our most recent subject is Tom Offer, a Senior Hardware Engineer with CommAgility. Tom’s experience has included work with embedded systems, FPGA, and digital signal processing within RF, LTE, telecommunications, and other wireless markets.

  2. How Not To Run Hot: Overcoming Thermal Challenges In Wi-Fi Front End Designs (Part 1)

    It can be hard to fully account for thermal management and affected parameters in wireless access points or customer premises equipment prior to FCC certification. This article is the first in a series that looks at the design challenges for Wi-Fi front end designs. Part 2 will cover coexistence and interference.

  3. 5G New Radio Architecture And Challenges

    NR is billed as a more capable air interface, and will need to operate in both the frequencies below 6 GHz and above 24 GHz (mmWave) with a frame structure supporting both TDD and FDD, as well as operate in both licensed and unlicensed spectrum.

  4. GaN IC Die Handling, Assembly, And Testing Techniques

    This white paper describes the storage and handling requirements for GaN IC chips, as well as recommended assembly and testing techniques for users. Guidelines are also provided to aid the user in the assembly of GaN IC die in a manner consistent with desired electrical performance.

  5. WiFi Performance In A House with Two Routers

    Wireless InSite’s Communication System Analyzer provides capabilities for assessing the performance of LTE, WiMAX, 802.11n, and 802.11ac systems. The following example investigates WiFi throughput coverage in a house provided by 802.11ac routers operating at 5 GHz using an 80 MHz bandwidth.

  6. When Is Power Amplifier Linearity Important?

    Choosing the appropriate amplifier for a system is vital for the system’s total performance. While there are many different characteristics of power amplifiers, this article focuses on an amplifier’s linearity and when it is important to consider in a selection process.

  7. How Can A Low Noise Amplifier Improve My System's Performance?

    For a receiver to properly demodulate an RF signal and recover the data, the signal that arrives at the receiver must be sufficiently higher than the noise. This article presents the different benefits of using an LNA and how this instrument can improve wireless systems.

  8. What Does MIL-STD-810 Certified Mean?

    This article discusses the meaning of the MIL-STD-810 test method, how it defines the environmental test procedures and engineering considerations for a product design, and what it means for engineers looking for certified products.

  9. Role Call: RF Modeling Manager

    Role Call is a new series on RF Globalnet that will look at different jobs and career paths in the RF and Microwave industry. We’ll explore what each position entails, how much you have to know, and what experience you need to get started. Yueying Liu, RF Device Modeling Manager with Wolfspeed/CREE has held various positions in the industry since earning her doctorate in solid-state electronics from North Carolina State University in 2009. Liu’s experience ranges from GaN product engineer and modeling design engineer to RF PA designer and RF modeling engineer, before taking her current management role last year.

  10. CFA Theory Of Operation

    A CFA is a vacuum electron device (VED) which might best be described as part magnetron and part traveling wave tube (TWT). This device is used to generate power with high efficiency and voltage levels of a magnetron while the electronic interaction is with a traveling wave. This white paper further discusses CFA characteristics and its operational theory.