Blog Posting


What We Learned at the 5G Symposium at EDI CON USA 2018

5G mmWave is here!

With 5G mmWave technology already deploying in the US, I was glad to oversee the EDI CON USA 2018 5G Symposium in Oct that included a full afternoon of sessions including topics such as the best RF architectures for 5G, semiconductor tradeoffs for 5G mmWave devices, antenna modeling, simulation of fixed wireless access systems, design of a 28 GHz filter and silicon active antennas for mmWave applications.

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5G Satellites: Lost in Space?

The use cases and goals of the 5G initiative are well-known. What might not be as well-known is the role and potential use of satellites in the 5G ecosystem. Afterall, there has not been significant discussion on how satellites fit in. For Release 16, the 3GPP initiated a study item focused on the role of satellites in the 5G ecosystem.

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Finding a Circuit Material for 77 GHz Automotive Radar - Part 2

As explained in the previous ROG Blog, vehicular radars are already being designed and fabricated at millimeter-wave frequency bands such as 77 GHz. Specifiers of circuit materials for millimeter-wave frequencies (30 to 300 GHz) are faced with special requirements that are often different than those for circuits at microwave frequencies of 30 GHz and below. However, practice and experience of circuit designers working at millimeter-wave frequencies has shown that some circuit material parameters can be tightly linked to achieving high performance in millimeter-wave circuits, and that some circuit materials embody the material parameters as needed for excellent performance at 77 GHz and beyond.

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Comsol 5.4 Enhances RF Capabilities

Extended Materials & RF Part Libraries, Far-Field Analysis Functions

At its annual conference, COMSOL announced the latest version of COMSOL Multiphysics Version 5.4, which in addition to two new products provides performance improvements and additional modeling tools.

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Finding a Circuit Material for 77 GHz Automotive Radar - Part 1

This ROG BLOG is Part One of a two part series introducing the key criteria to consider when selecting a PCB substrate which will minimize circuit losses for 77 GHZ radar PCB antenna applications.  First we will discuss components of PCB circuit loss, and then introduce six key material properties critical to developing low loss millimeter wave circuits at 77 GHz.

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New Thin GaN Structure on SiC Improves RF Performance

SweGaN is a spin-off from Linköping University that recently announced a new GaN-on-SiC HEMT heterostructure, QuanFINE ™, built on the concept of a GaN−SiC hybrid material that combines the high-electron-velocity thin GaN with the high-breakdown bulk SiC. According to their web site, the structure is realized by the company’s unique hot-wall MOCVD process and shown good result in both high-frequency and power transistors. 

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5G is coming: What to expect and why

Dr Luyun Jiang, Technology Analyst, IDTechEx

th-Generation Wireless Systems (5G), says the optimist, will revolutionize our life as the 3G/4G systems did. While the majority are still waiting to link to the 4G network, the top telecoms have started the war for the next generation of mobile communication. 5G is expected to finally bring the autonomous car, VR and internet of things to reality and make science fiction come true.

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Patrolling PIM in RF/Microwave Circuits

Unwanted levels of PIM can result from several different factors, including the amplitudes and frequencies of the multiple transmitted tones, the configuration of a circuit’s transmission lines, and the current density and power level of the application. Multiple signal tones are usually denoted by their fundamental frequencies, such as f1 and f2, with the frequencies of their PIM spurious signals resulting from the differences between different harmonics of the fundamental tones. Learn about how PCB designs can reduce PIM.

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