Novel architecture of EER transmitter with class-E amplifier

This paper presents a novel architecture of the envelope elimination and restoration (EER) transmitter with the class-E amplifier. A design example is also given along with the PSpice-simulation results. In the proposed architecture, a MOSFET is added and connected to the dc-feed inductance of the class-E amplifier in parallel, basing on the conventional Envelope Pulse Width Modulation (EPWM)-EER architecture. Therefore, it is possible to obtain no transient-attenuation performance, low surge voltage, and fast rising-time response by applying the proposed architecture. In other words, the proposed architecture can realize all performance of the improved EPWM-EER architecture, i.e., the Psuedo-EPWM or Preceding EPWM (pEPWM), but without carrying out the process of trial and error, which is required in the pEPWM architecture. The PSpice-simulation results show the effectiveness and validity of the proposed architecture.