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New Developments in Additive Manufacturing for RF/Microwave Applications
Additive Manufacturing and 3D printing have evolved quickly over the last few years and made its way into the RF and microwave market. We have seen everything from 3D printed PCBs and circuits to waveguides to antennas and lenses to connectors. Additive manufacturing has the advantages of being able to produce shapes that are not possible with traditional manufacturing techniques and able to miniaturize structures which is well suited for higher frequencies. They also use less material and in many cases are lighter than traditional manufactured parts. Additive manufactured parts can typically be produced much faster than traditional techniques for smaller quantities and fast prototypes. The eBook covers many of the recent innovative devices and components that additive manufacturing and 3D printing have enabled in the RF and microwave space. The articles cover 3D printed PCB circuits, antennas, coaxial SMA-to-waveguide transitions, copper and air dielectric routing circuits, filters, and waveguides.
5G OTA Testing Guide
5G mmWave frequencies have required a new way of testing using over-the-air (OTA) measurements. The first article is an in-depth look at the fundamentals of 5G OTA testing, overview of key antenna measurement parameters, test methods and test setup, along with 3GPP OTA testing for UEs along with the relevant transmitter and receiver test considerations. The remaining articles discuss recent advances in 5G OTA testing ranging from test methods to new chambers and calibration methods. The first article in this group addresses significant test time reduction and equipment utilization in 5G RF production testing through strongly parallelized testing of the 3GPP specifications, improving speed by a factor of 10. The next article reviews the design of a novel multiple compact antenna test range system for multiple angles of arrival measurement of 5G mmWave devices. The virtual cable calibration method is described and demonstrated in the next article that provides a systematic approach with fast convergence to determine the precoding calibration matrix parameters. The last article discusses the future with bringing full-wave numerical modeling and antenna measurements together and presents a way to converge both worlds in an optimal cost-benefit technique moving toward augmented OTA.
Please note: By downloading this eBook, your contact information will be shared with the sponsoring company, Rohde & Schwarz GmbH & Co.KG and the Rohde & Schwarz entity or subsidiary company mentioned in the imprint of rohde-schwarz.com, and you may be contacted by them directly via email or phone for marketing or advertising purposes.
Advances in Radar and Components
Several of the articles in this eBook cover improvements due to GaN technology including a survey of GaN foundries covering the various processes in production and in development and electronically reconfigurable GaN amplifiers recently introduced by Qorvo. It also covers a giga-watt, multi-way combiner using corrugated coaxial waveguide filters and a mmWave MIMO radar configuration. The eBook also looks at how startups are revolutionizing automotive radar with new 4D sensors for ADAS and autonomy.