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Right. If it went into the terahertz range, it would help open up that area. 5G cell phones go higher than 20GHz than that.

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Even so, this is pretty impressive, not all that long ago this device would be SF and people would doubt it would ever exist.

Not that long ago, the radios in a cell phone would be SF.

Indeed!

The antenna in mobile phones perform well across a wide range of frequencies due to being fractals!

https://en.wikipedia.org/wiki/Fractal_antenna

No, it does so because of solid state tuners, and RF switches.

The article I linked claims:

A fractal antenna's response differs markedly from traditional antenna designs, in that it is capable of operating with good-to-excellent performance at many different frequencies simultaneously.

Is this inaccurate?

The associated electronics are obviously necessary too.

Fractal antennas are mostly snake oil. You’ll always see then driven against a large counterpoise (ground plane), as the counterpoise becomes the radiator. You can make use of Chu’s limit without resorting to fractals.

https://en.m.wikipedia.org/wiki/Chu–Harrington_limit

FYI @madengr, almost all of your recent comments - going back a few months, are in [dead] state. Not sure if you've been shadow-banned or what, but you might want to contact the mods or something.

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