Illustration of TDRS-13, the final satellite in NASA’s Tracking and Data Relay Satellite (TDRS) constellation, which has provided crucial connectivity for govern- ment users like the ISS and the U.S.

This project is an advanced 4-channel relay module designed for home automation and IoT applications. Unlike standard relay boards, this design integrates an LM2596 buck converter for onboard ...

If you're a casual track and field fan, you've probably heard of the 4x100 and 4x400 meter relays and can likely deduce how they are run from the names of the events alone. However, those are not the ...

Abstract: In the current 4G Long Term Evolution and the incoming 5G mobile communication technology, as the number of radio frequency (RF) devices in the RF front-end module is increasing fast, ...

Abstract: This paper considers mixed radio frequency (RF) and hybrid free space optics (FSO)/RF communications for information transfer between vehicles and the network where multiple infrastructures ...

So you want to control some mains electrical (or lower voltage) item using your phone, perhaps? This single ESP8266 plug-in controls a relay that is built in to the module. An Android app (.apk) ...

The effects of impedance matching and switch quality can play major roles in achieving accurate and repeatable measurements with an RF/microwave test system. Impedance mismatches cause reflections, an ...