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RELL

Circuit Material Design Guide for mmWave Radar Applications

This eBook covers the design considerations for PCB laminate circuits and how to take these issues into account when designing for mmWave applications. Dielectric constant is a key material parameter that can vary due to temperature changes, within a substrate material due to the construction material, or over frequency. Dissipation factor is another key parameter that can affect the losses in a circuit and become very significant at mmWave frequencies. Metal surface roughness is another important consideration that can increase signal loss that is not significant at lower frequencies. The woven glass within the circuit material also causes changes in dielectric constant that can affect mmWave signals differently depending on the direction of the metal transmission lines. In addition, datasheets might not provide all of the information you need to simulate a circuit accurately.

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RELL

Design Techniques and Considerations for GaAs and GaN RF and Microwave Devices

There have been many advancements in RF compound semiconductors in the last few years. GaAs designers have developed higher performance products to compete with GaN and with the mainstreaming of GaN technology, some companies are taking it to the next level with higher power levels than ever imagined before. From improvements in performance and levels of integration to reliability and packaging, this eBook examines many of these new developments and will update you on several advancements in high frequency compound semiconductor technology.

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RELL

Antenna and Beamforming Design and Simulation

This eBook is a compilation of phased antenna and beamforming technology articles along with contributions from COMSOL on simulation techniques and examples of new antenna arrays and beamforming techniques to help you learn about the tradeoffs and design options in this fast developing area. The articles cover fully digital phased array radars, modeling and simulation examples, new array beamforming technologies, 28 GHz beamsteering antenna array simulation and other related topics.

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