But for a weekend project, [Vinod.S] took the ultrasonic transmitter and receiver from a distance-meter module and used amplitude modulation to send music ultrasonically from his laptop to a ...

This means that each sideband is just a quarter of the total power. In other words, for a transmitter with a 100-watt carrier, the total sideband power will be 50 W and each individual sideband will ...

The protocol in this ASK ‘party line’ environment is very simple: first come, first serve, loudest or closest gets heard. Receiver address security is high, but transmission reliability is somewhat ...

For those building their own remote controlled devices like RC boats and quadcopter drones, having a good transmitter-receiver setup is a significant factor in the eventual usability of their build… ...

2. When a CR2032 battery has been used for 200 mAh, the internal resistance doubles from the nominal value of about 15 Ω to about 30 Ω, while the voltage drops from 3.0 V to 2.8 V. (courtesy of ...

In addition to the 3.5 mm auxiliary port and the USB-C charging port, the ML300 has a switch to move between transmitter and receiver modes or to turn off the device, a multifunction button for ...

Product line introduced at CES 2021. Seco-Larm’s ENFORCER 917MHz HL-951 series RF transmitters and receivers use digital modulation for improved immunity to interference, better signal ...

The proposed E-SOQPSK transmitter is a multimode modulator. It can generate OFDM-structured m-QAM, OQPSK, or SOQPSK modulation waveforms. As shown (Fig. 7, again), an E-SOQPSK modulator in the ...

Quadrature amplitude modulation signalling is currently enabling rapid data transfer capacity growth, but it still has associated drawbacks. Here, Liu et al.use optical injection locking to ...