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The Role of PCB Materials in Printed-Circuit Impedance

Printed circuits for high-speed and high-frequency applications rely on fine-featured transmission lines for signal transmission. Ideally, the loss through these transmission lines is minimal, and this requires an electrical impedance that is consistent and without interruptions, and with a value most appropriate for the types of signals to be transferred through the circuit. However, a number of factors can affect the impedance of a PCB, including the physical and electrical characteristics of the circuit and circuit material, but by reviewing and better understanding these variables, their effects can be minimized.


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GaN wafer

RF Power Semiconductor Market Trends

From Yole Développement

Yole Développement just released a comprehensive report on the RF power device market and here are the highlights from their article. They expect the market to recover in coming years due to increasing demand for telecom base station upgrades and small cell implementations. Overall market revenue could potentially increase 75% by the end of 2022, posting a CAGR of 9.8% from 2016-2022.


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Bringing 5G PAWR to the People

White House OSTP and NSF Bridge the Gap Between Academia and Industry in Wireless Communications Research

Last July, the White House Office of Science and Technology (OSTP) and the National Science Foundation (NSF) along with 26 founding companies announced their intention to build four testbeds in locations across the United States. Learn more about these efforts in this posting.


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AFFOA1

Innovations in Smart Fabrics

Advanced Functional Fabrics of America Opens

Smart clothing is emerging as a very interesting application for IoT. Last week, the Advanced Functional Fabrics of America (AFFOA) opened in Cambridge, MA near the MIT campus.


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PCB

Finish Makes a Difference in Final PCB Performance

The impact of final surface finish on circuit loss will depend not only on the type of surface finish but on the thickness of the substrate material and the type of transmission-line technology, such as microstrip or grounded coplanar waveguide (GCPW). This posting will describe some of the effects of various finishes.


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