The input signal is sampled by a conventional audio analog-to-digital converter (ADC), and fed to a digital exciter, which modulates overall transmitter output power by switching a series of low-power solid-state RF amplifiers on and off.
The input signal is digitized by a conventional analog-to-digital converter (ADC), and sent to a digital exciter, which adjusts overall transmitter output power by switching a series of low-power solid-state RF amplifiers on and off.