Varying the voltage of a carrier or a direct current in order to transmit analog or digital data. Amplitude modulation (AM) is the oldest method of transmitting human voice electronically. In an ...

Harris has developed its first AM transmitter specifically for HD Radio at lower power levels. Ky Luu spoke about advanced pulse duration modulation during the Broadcast Engineering session titled, ...

Belar Electronics has unveiled its latest innovations for analog and digital AM modulation, as the RF monitoring firm has completed its updates for its legacy AMMA-2. The company says this allows for ...

In optical networking, generating the modulated signal by varying the current that creates the laser emission. Direct modulation is used for transmission speeds up to 2.5 GHz or higher speeds for ...