The problem with gain at those frequencies is going to be the maximum permissible exposure power levels for uncontrolled public spaces. Handsets with a lot of gain near the eyes will exceed those power levels in short order. Nobody seems to be talking about that, antenna height needs to be above 30 feet I believe to not be in what is considered uncontrolled public access space. Still not seeing the logic with the thought process of using MM wave in handsets given those constraints.
Thank you, Brian Webster www.wirelessmapping.com From: AF [mailto:[email protected]] On Behalf Of [email protected] Sent: Wednesday, January 29, 2020 11:26 AM To: AnimalFarm Microwave Users Group Subject: Re: [AFMUG] Waveguide Makes a Comeback in 5G—for Antennas | Electronic Design Very flat pancake pattern with that much gain in an omni. From: Cameron Crum Sent: Wednesday, January 29, 2020 8:41 AM To: AnimalFarm Microwave Users Group Subject: Re: [AFMUG] Waveguide Makes a Comeback in 5G—for Antennas | Electronic Design They said about 12 dBi gain from that omni which is pretty impressive for an omni. I guess if you have enough of them, it won't matter too much. I'm guessing these go with little pico-pops in an indoor type environment. On Wed, Jan 29, 2020 at 9:28 AM <[email protected]> wrote: The one on the right looks like a dielectrically loaded V pol slot antenna. (On slots, the slot direction is opposite the polarization). Similar to a collinear coax design. Narrow V pattern, low gain, mm waves, people moving around with super low gain antennas in their phones. Am I the only one that does not think this will work well? From: Cameron Crum Sent: Wednesday, January 29, 2020 8:05 AM To: AnimalFarm Microwave Users Group Subject: Re: [AFMUG] Waveguide Makes a Comeback in 5G—for Antennas | Electronic Design Very cool. The antennas I made for my wisp years ago were all slotted wave guides and 1 horn. Easy to make, simple materials, little to nothing to fail. These are obviously more advanced combining, those with active components, and other techniques, but it's cool to see it. On Sat, Jan 25, 2020 at 8:07 AM Jaime Solorza <[email protected]> wrote: https://www.electronicdesign.com/industrial-automation/article/21121326/waveguide-makes-a-comeback-in-5gfor-antennas -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com _____ -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com _____ -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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