This paper presents a voltage-mode three-level class-D gallium nitride (GaN) power amplifier (PA) for the 700MHz band. The PA achieves a drain efficiency of 68.7%, at a maximum output power of 2.1 W ...

The celebrated ‘555’ IC was originally developed as a timer device, but over the years this golden oldie has been used in all sorts of other applications, including some never imagined by its ...

Class D amplifier is rarely reported to be broken when it is operating with a fluctuating load. This is because excessive voltage or current is imposed on the transistor of the class D amplifier.