Teeny-Tiny Bluetooth Transmitter Runs on Less Than 1 Milliwatt

If that is practical to use, it would open an entire new field of applications. Constrained devices currently consume roughly 50 times that much during transmission on 802.15.4 or BLE. While there are sensors who are used for 10 years on a coincell, they achive this by spending most of their lifetime in deepsleep at under 1uA with disabled transceivers.

Does anyone remember the amazing backscatter tech by the UW kids (<a href="https:&#x2F;&#x2F;www.jeevawireless.com&#x2F;" rel="nofollow">https:&#x2F;&#x2F;www.jeevawireless.com&#x2F;</a>)? I&#x27;ve been waiting on them for years now. They were supposed to be to market by now with a $0.25 chip that does 2.4GHz at 1&#x2F;10,000 of the power. They have reliable functional demos doing long range transmission using 59 micro watts. They were also working on a battery free emergency cell phone.

And thus begins a Cambrian explosion of new spy devices that run (practically) forever off a button cell.<p>The bleed&#x2F;drain rate of many batteries is far more than 1mw.

I&#x27;d love to see what kind of range we can expect from that haha. Still a great achievement for BLE! I have an iPhone and often find it via saying &quot;Hey Siri&quot;, and have sorely wished for a way to locate more &quot;mundane&quot; objects, and if this were to ever cost around the price of an ESP8266 it&#x27;d make that possible. (Yes there is tile and similar tags, but those are expensive, and I mean to have a tracker on a bunch of items)

Getting closer to Jim and Pam bluetooth earpiece?

What would be the distance range of such tiny transmitter?

Isn’t this low enough to use ambient radio waves for power?

&quot;...magnetic monopole...&quot; is mentioned in the photo caption :)