RF

Researchers train drones to use Wi-Fi to look through walls | TechCrunch

https://techcrunch.com/2017/06/19/researchers-train-drones-to-use-wi-fi-to-look-through-walls/?ncid=rss&utm_source=tcfbpage&utm_medium=feed&utm_campaign=Feed%3A+Techcrunch+%28TechCrunch%29&utm_content=FaceBook&sr_share=facebook This is quite interesting -or frightening – WiFi radar application. A new system by University of California, Santa Barbara researchers Yasamin Mostofi and Chitra R. Karanam uses two drones, a massive Wi-Fi antenna, and a little interpolation to literally see through solid walls. One drone blasts Wi-Fi through the structure and another picks up the signal.

IMS 2017: RF/microwave test equipment, part 1 | EDN

http://www.edn.com/electronics-blogs/rowe-s-and-columns/4458491/IMS-2017–RF-microwave-test-equipment–part-1?utm_content=buffer9eaa6&utm_medium=social&utm_source=twitter.com&utm_campaign=buffer The IEEE International Microwave Symposium is in Honolulu, Hawaii in 2017. Here is some of the new test equipment seen by EDN staff.

We may have accidentally formed a protective bubble around Earth | Popular Science

http://www.popsci.com/radio-wave-shield-space-weather?src=SOC&dom=fb This is interesting if true. This is not the first I have heard EM signals from earth affecting ionosphere.  When the Navy wants to send a message to an underwater submarine, it sometimes uses very low frequency (VLF) radio waves. Some end up in space and according to a new report, they may be forming a

HB100 microwave radar to Arduino

A Doppler radar is a specialized radar that uses the Doppler effect to produce velocity data about objects at a distance. It does this by bouncing a microwave signal off a desired target and analyzing how the object’s motion has altered the frequency of the returned signal. Doppler radar technology used to be expensive, but

Struggling towards 5G | EDN

http://www.edn.com/electronics-blogs/5g-waves/4458307/The-struggle-to-5G?utm_content=bufferf9a50&utm_medium=social&utm_source=twitter.com&utm_campaign=buffer  5G is developing so fast it’s hard to get a handle on it, whether you’re responsible for building 5G systems or writing about them. Part of the problem is that 5G is not one proposed standard, it’s a growing set of them.  Every new proposal of this sort complicates the ability of standards bodies

IoTuesday: Maximize Your WiFi!

https://www.sparkfun.com/news/2363 Interesting looking project: mount the antenna and ESP8266 Thing Dev Board onto a pan/tilt bracket with some servos. The ESP8266 code was updated to connect to a WiFi access point (AP) and begin sweeping up and down (about 70°) and left to right (about 180°). At 5° increments, the ESP8266 would take an RSSI reading. Finally the antenna automatically returns

LoRa for IoT

hen it comes to Internet of Things, connectivity to the internet is the primary area of focus.  The sensors on the IoT devices, wearables and electronic devices need to get connected easily – preferably wirelessly. IoT LPWA market is expected to grow at an annual rate of 90 percent. It is expected that in 2021

Sigfox for IoT

IoT LPWA market is expected to grow at an annual rate of 90 percent. It is expected that in 2021 the market size of about EUR 24.5 billion. SigFox and LoRa have been competitors in the LPWAN space for several years. There are LoRa and Sigfox networks in Finland -Sigfox network is operated by Connected