- Joined
- Jun 21, 2012
- Messages
- 4,865
Recently someone posted a video showing an IoT (Internet of Things) device that did not require an RF transceiver to link into a local Wi-Fi network. Instead, it modulated the antenna impedance digitally with a MOSFET to utilize RF backscatter from a local, powered, wireless Wi-Fi transceiver to piggyback low-bandwidth data packets to a LAN Wi-Fi router.
You still need power for the digital electronics in the IoT device that is modulating the backscattered RF, but there is no power required to operate an RF transceiver in the IoT device. All this was invented about two years ago by students at the University of Washington, and they now have a commercial entity to exploit the technology.
I would like to open a thread and try to determine if this technology can be used by highly qualified hobbyists for home use. There may be practical limitations on range and data bandwidth, but it sounds exciting... at least to me.
Here is a link to get the ball rolling. There are papers published on the subject, but Google is your friend here in finding more of them.
You still need power for the digital electronics in the IoT device that is modulating the backscattered RF, but there is no power required to operate an RF transceiver in the IoT device. All this was invented about two years ago by students at the University of Washington, and they now have a commercial entity to exploit the technology.
I would like to open a thread and try to determine if this technology can be used by highly qualified hobbyists for home use. There may be practical limitations on range and data bandwidth, but it sounds exciting... at least to me.
Here is a link to get the ball rolling. There are papers published on the subject, but Google is your friend here in finding more of them.