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Someone recently asked me why they can't find many new types of 5G cellular antennas out there. There's a really good reason there are actually (2) types :
- those for existing cellular wireless with the typical 600 MHz (UHF) thru the 6 GHz (C-Band) frequency range ; also known as Frequency Range 1 (FR1)
- those for future cellular and data communications (24 to 53 GHz) known as Frequency Range 2 (FR2)
https://en.wikipedia.org/wiki/5G_NR_frequency_bands
However to my knowledge there are not any cell phones available today for FR2 and typically FR2 is going to used Phased Arrays for link-to-link high speed data communications :
https://en.wikipedia.org/wiki/Phased_array
But FR2 systems will be using Beam-forming of phased arrays to be able to use phase shifting for directivity to increase link gain:
https://en.wikipedia.org/wiki/Beamforming
However FR2 phased array antennas are typically patch based and can be very small (2 x 2) for small devices :
Intel Segula Peak 5G Cellular Phased Array (Ka Band)
or they can be very large Massive MIMO (256 x 256) for cell towers and base stations :
https://en.wikipedia.org/wiki/MIMO
So it really depends on what you are trying to do, but don't look for FR2 in cell phones any time soon.
You are more likely to find high-speed link communications for link-to-link directed arrays for large cellular networks and likely very large campus communications (e.g. airport, stadium, high density cities, ... etc).
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