Static and Dynamic Error Vector Magnitude Behavior of 2.4-GHz Power Amplifier

This paper presents error vector magnitude (EVM) behavior under two different modes of a reference voltage $({ V}_{\rm ref})$; one is a static EVM with a constant ${ V}_{\rm ref}$ and the other is a dynamic EVM with a pulsed ${ V}_{\rm ref}$. A 2.4-GHz two-stage power amplifier (PA) is implemented by GaAs HBT technology to investigate EVM behavior for IEEE 802.11 g wireless local area network application. A square wave pulse with the duty cycle of 50% is applied as ${ V}_{\rm ref}$ for dynamic operation mode.