Essays about: "switched mode power amplifiers"

Found 3 essays containing the words switched mode power amplifiers.

1. 1. Design and Implementation of as Asymmetric Doherty Power Amplifier at 2.65 GHz in GaN HEMT Technology

   University essay from Elektroniska komponenter; Tekniska högskolan

   Author : Mohsin Mumtaz Tarar; [2011]
   Keywords : Asymmetric Doherty Power amplifier;

   Abstract : Power amplifiers are an indispensible part of the wireless communication systems. Conventional PAs provide peak efficiency at peak output power which is obtained at a certain fixed optimum resistance. These kind of amplifiers are normally called switched-mode power amplifiers (SMPAs) and are used for constant envelope signals. READ MORE

3. 2. A Study of Different Switched Mode Power Amplifiers for the Burst Mode Operation

   University essay from Institutionen för teknik och byggd miljö

   Author : Dristy Rahul Parveg; [2008]
   Keywords : High Efficient transmitter for 3G base station application; Burst mode operation; Switched mode power amplifier SMPA ;

   Abstract : Power-amplifier efficiency is a significant issue for the overall efficiency of most wireless system. Therefore, currently there are different kind of Switched mode power amplifiers are developed which are showing very high efficiency also at higher frequencies but all of these amplifiers are subjected to drive with the constant envelope signals. READ MORE

4. 3. A Study of Switched Mode Power Amplifiers using LDMOS

   University essay from Institutionen för teknik och byggd miljö

   Author : Ahmed Al Tanany; [2007]
   Keywords : LDMOS; Switch Mode Power Amplifiers; power amplifier; BALUN;

   Abstract : This work focuses on different kinds of Switch Mode Power Amplifiers (SMPAs) using LDMOS technologies. It involves a literature study of different SMPA concepts. Choosing the suitable class that achieves the high efficiency was the base stone of this work. READ MORE