Circuit design for stuff pushing into super high frequencies is god damn witchcraft. Look at that. Trying to run the math in my head for the corner frequencies.https://twitter.com/wavedrom/status/997272423798980608 …
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I haven't ever done any antenna design, that shit is black magic. All my RF understanding is in devices and pcb's. If you think this shit is nuts though you'd have a lot of fun with metamaterials. An RF columnator in metamaterials looks nothing like you'd expect.
Ultimately isn't the black magic RF PCB stuff basically antennas at that point? Well, near field I guess, not far field. I just see two disjoint helices in that cage and I think of antennas.
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Not at all, an antenna and an RF PCB are entirely different behaviors. RF doesn't necessarily radiate, you need to make it do so. Antennas are designed to radiate as efficiently as possible in a specific way, RF PCBs you're fighting that tendency to radiate as much as possible.
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I'm clueless about this so please bear with me. If you take two antennas and stick them on the ends of a waveguide, aren't you building a filter essentially? The way I've always seen it is RF stuff on a PCB is basically antenna-like elements inside a cage, or coupled together.
End of conversation
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