Wilkinson, A.J. and Everard, J.K.A. (2001) Transmission Line Load-Network Topology for Class E Power Amplifiers. IEEE Transactions on Microwave Theory and Techniques, 49 (6). pp. 1202-1210. ISSN 0018 9480Full text not available from this repository.
Class-E amplifiers are a type of switching amplifier offering very high efficiency approaching 100%. In this paper, a topology and design methodology, which could be used for a transmission-line implementation of a class-E power amplifier, is presented. A simple transmission-line class-E load network is proposed that offers combined transformation of the load resistance down to a suitable level, as well as simultaneous suppression of harmonics in the load. The load network was developed and tested with the aid of a time-domain simulator (i.e., SPICE). A microstrip layout was designed and a first prototype was built operating at 1 GHz utilizing a field-effect transistor as the switching device. A drain efficiency of 72% was measured for our prototype after tuning, although better performance can be expected with an improved switching transistor and careful tuning of the load network
|Institution:||The University of York|
|Academic Units:||The University of York > Electronics (York)|
|Depositing User:||York RAE Import|
|Date Deposited:||05 Aug 2009 10:13|
|Last Modified:||05 Aug 2009 10:13|
|Publisher:||IEEE Institute of Electrical and Electronics|