New Zealand is about to test long-range wireless power transmission

Re:New Zealand is about to test long-range wireless power tr... by datameta on Wednesday September 09, 2020 @04:07PM (#24425340)

Your latter concern is covered in the article: "But if it works as intended, the beam won’t ever contact anything but empty air. The system uses a net of lasers surrounding the beam to detect obstructions, like a bird or person, and it automatically shuts off transmission until the obstruction has moved on."

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Re:New Zealand is about to test long-range wireless power tr... by biofunsf on Wednesday September 09, 2020 @04:20PM (#24425477)

OP explicitly said:

“Even a horn has diffraction sidebands, and unless they're all at least 8dB down in all situations that's bad. The laser trips won't cover this.”

I don’t really understand this. My guess is that they’re saying that besides the targeted microwave band, other high/low frequencies will be emitted (sidebands) and that these will diffract and be way outside of the directional beam that’s protected by the laser trip wire.

I would assume the inventors have at least some explanation for this, but a fluffy article won’t go into those details.

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Re:New Zealand is about to test long-range wireless power tr... by elihu on Wednesday September 09, 2020 @04:30PM (#24425589)

Maybe OP meant side-lobes?

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

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Re:New Zealand is about to test long-range wireless power tr... by Emrod on Wednesday September 09, 2020 @07:24PM (#24427150)

As you rightly noted, an article wont go into those details :). you are rising a valid point which we have addressed. Happy to explain if you PM me

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[dead]

Re:New Zealand is about to test long-range wireless power tr... by phs318u on Wednesday September 09, 2020 @05:24PM (#24426072)

https://en.m.wikipedia.org/wiki/Horn_antenna

5 seconds of searching would have saved you from looking like a dick.

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Re:New Zealand is about to test long-range wireless power tr... by noir_lord on Wednesday September 09, 2020 @05:43PM (#24426281)

Doesn't seem like all of his life up to this point worked, would 5 seconds make all the difference?

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Re:New Zealand is about to test long-range wireless power tr... by NateEag on Wednesday September 09, 2020 @04:18PM (#24425442)

OP explicitly said, "The laser trips won't cover this."

That may or may not be true, but you're bringing up a point they already addressed.

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