AC Power Combining Strategy with Application to Efficient Linear Power Amplifiers

<p>With the ongoing push for wireless systems to accommodate more users and support higher data rates more efficient modulation schemes have been created that are more advanced than simple FM and AM modulation used for radio broadcasting. These modulation schemes, such as orthogonal frequency division multiplexing (OFDM), suffer from high peak to average power ratios. Standard Class A and Class AB amplifiers cannot simultaneously achieve good linearity and efficiency, and therefore there has been an increase in the development of new topologies to combat this issue. Common features to these circuits is power combining of two or more separate transistors.</p> <p>In this work, we consider various ways of two-source power combining and identify four topologies of interest. We notice that linear power-efficient amplifiers reported to date are based upon two of the identified combining strategies. We believe that no amplifiers have been reported that leverage the other two alternatives. This work produces a fully-functional amplifier based on one of these alternatives. The prototypes are intended to serve as concept verification of the architecture and hence are implemented at lower (1 MHz) frequencies.</p>

Name thesis:degree_name

MS in Electrical Engineering

Discipline thesis:degree_discipline

Electrical Engineering

Year dc:date.available

2014

Author dc:creator

• Bendig, Rudi Matthew

Contributors dc:contributor

• Vladimir Ivanov Prodanov

• Two-source power amplifier
• Peak to Average Power Ratio
• Linear Power Amplifier
• Electrical and Electronics

Identifier

10.15368/theses.2014.66

OAI identifier oai:identifier

oai:digitalcommons.calpoly.edu:theses-2358