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New eBooks:

RELL

The Coming of UWB Technology

Ultra-wideband (UWB) is the latest wireless standard moving to mass market adoption, some 20 years after the U.S. Federal Communications Commission authorized low power, unlicensed use of the band from 3.1 to 10.6 GHz. UWB, defined by IEEE standard 802.15.4z, can accurately determine distance and location, even in the presence of noise and multipath. This eBook provides an overview of the technology and explores several of its applications.

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RELL

Resonator Filter Technologies

This eBook explores advancements in the design of filters and resonator technologies. The first article illustrates how EM simulation has significantly improved the development of complex filters. The article illustrates the process with the design of a 75 Ω filter covering 564 to 1200 MHz for a cable TV distribution system. The second article continues the design discussion using a bandpass filter for 5G band n257. The next article describes an innovative evolution of YIG resonators — reducing power consumption, size and cost — and its application to tunable filters. The article discusses the evolution of the YIG and how one company is applying this improved capability to tunable filters operating above 2 GHz. Read this to learn more about these topics.

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RELL

New Trends in EMC Testing

This eBook contains five articles describing aspects of EMC testing, which is the means used to validate EMC among the near infinite possibility of co-located systems. The first article reviews the characteristics of mmWave propagation, how mmWave signals are generated, their applications and the measurement challenges when identifying and characterizing potential interferers. The next addresses one of the core challenges faced by companies offering EMC testing: long test times reduce the availability of the test facility and limit the number of devices that can be certified, reducing testing revenue. The article describes an approach to accelerate testing without reducing the accuracy of the measurement, known as time domain scanning. An application note from AR covers the important factors when selecting a power amplifier for EMC testing, including the type of amplifier for the required power level (e.g., solid-state or tube), modulation capabilities and other requirements such as linearity and the ability to withstand mismatches. The next article assesses the ROI from establishing an in-house EMC test capability using representative costs. The final article presents the rationale and benefits for multi-tone testing. Read this eBook to learn more about these topics.

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