WAVEGUIDE Makes a Comeback in 5G--for Antennas.

In its "Millimeter Wave TechnologyMarket 2019-2023", 360 ResearchReports notes: "There has been aremarkable increase in antenna developmentsfrom waveguide slot antennas,"driven by mmWave radars and interestin "design and implementation ofefficient and miniaturized antennas formobile communications and radio communicationequipment". Another promising technology issubstrate integrated waveguide (SIW),which uses printed structures that emulatemetal waveguide but are lightweight,have a low profile and low insertion loss,and are easy to manufacture. [Extracted from the article]