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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.

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.

The adoption of mmWave frequencies to provide the bandwidth for the high data rates envisioned for 5G — “enhanced mobile broadband” or eMBB — unveiled a stream of measurement challenges. They begin with the greater sensitivity of the cable assemblies interconnecting mmWave components and extend to the need for over the air measurements where there are no wired connections. To address the challenges making accurate and repeatable measurements, from the semiconductor to the system, this eBook collates several Rohde & Schwarz articles and focuses on the mmWave frequencies in the FR2 (frequency range) bands. The eBook concludes with an example of a test system for characterizing and testing a Sivers Semiconductors transceiver and antenna module that operate over the 57 to 71 GHz unlicensed band.