It can achieve that without a dish because (correct my math if I'm wrong) a full wavelength antenna for 60GHz is 0.1968 inches. So I'm pretty sure the silica includes the antenna.
The antenna is built on a separate substrate, I'm guessing a spread glass such as Rogers RO1200. You can do the aperture calculation here, which for a square aperture at 100% efficiency is 18x18 mm. It's probably more like 75% efficiency.
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It can achieve that without a dish because (correct my math if I'm wrong) a full wavelength antenna for 60GHz is 0.1968 inches. So I'm pretty sure the silica includes the antenna.
The antenna is built on a separate substrate, I'm guessing a spread glass such as Rogers RO1200. You can do the aperture calculation here, which for a square aperture at 100% efficiency is 18x18 mm. It's probably more like 75% efficiency.
https://www.everythingrf.com/rf-calculators/effective-antenn...