Electronics > RF, Microwave, Ham Radio

Thoughts on Starry's new EHF wireless internet tech and propagation issues

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TVHeadedRobots:
tggzz,

    Thanks for the insight. Anti-reflective plastic coating on the antenna, not in Kansas indeed. I did a bit more digging and found an article (http://techcrunch.com/2016/01/27/starry-internet-is-aereo-founder-chet-kanojias-latest-salvo-in-the-war-on-isps/#.vxfixtd:t3V2) that mentions the frequency is 30GHz (I was guessing when I mentioned 60GHz.) It also mentions that they are using an active phased-array to attempt to make this work and that the service is only aimed at densely populated urban areas. That seems to make a bit more sense than the first article I read, which didn't make mention of this caveat.

    If I find any documentation on the tech (link budget or not) I'll post it here.

Thanks.

tggzzz:

--- Quote from: TVHeadedRobots on January 27, 2016, 07:50:15 pm ---tggzz,

    Thanks for the insight. Anti-reflective plastic coating on the antenna, not in Kansas indeed. I did a bit more digging and found an article (http://techcrunch.com/2016/01/27/starry-internet-is-aereo-founder-chet-kanojias-latest-salvo-in-the-war-on-isps/#.vxfixtd:t3V2) that mentions the frequency is 30GHz (I was guessing when I mentioned 60GHz.) It also mentions that they are using an active phased-array to attempt to make this work and that the service is only aimed at densely populated urban areas. That seems to make a bit more sense than the first article I read, which didn't make mention of this caveat.

    If I find any documentation on the tech (link budget or not) I'll post it here.

Thanks.

--- End quote ---

28GHz (IIRC) is old tech for last mile connectivity. Very definitely susceptible to foliage attenuation; path loss studies should be easily available.

rfeecs:
There was a lot of hype a while back for LMDS, which was around 30GHz:
https://en.wikipedia.org/wiki/Local_Multipoint_Distribution_Service

It never caught on at the consumer level.  I think people underestimated the cost of doing things at 30GHz.

There is similar hype for various "5G" wireless network proposals that use millimeter waves, beam forming, etc.

TVHeadedRobots:
Found this on 28GHz networks and outdoor propagation. Not exactly apples to apples, but interesting. http://faculty.poly.edu/~tsr/Publications/ICC_2013_28.pdf

HAL-42b:
That was interesting. They do mention using steerable antennas, not phased arrays. This would be much cheaper than phased arrays.

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