This paper gives the first experimental characterisation of the phase noise response of the recently introduced Inverse Class E topology when operated as an amplifier and then as an oscillator. The results indicate that in amplifier and oscillator modes of operation conversion efficiencies of 64%, and 42% respectively are available, and that the excess PM noise added as a consequence of saturated Class E operation results in about a 10 dB increase in PM over that expected from a small-signal Class A amplifier operating at much lower efficiency. Inverse Class E phase transfer dependence on device drain bias and flicker noise are presented in order to show, respectively, that the Inverse Class E amplifier and oscillator follow the trends predicted by conventional phase noise theory. © 2007 EuMA.
|Number of pages||3|
|Publication status||Published - Oct 2007|
|Event||37th European Microwave Conference - Munich, Germany|
Duration: 01 Oct 2007 → 01 Oct 2007
|Conference||37th European Microwave Conference|
|Period||01/10/2007 → 01/10/2007|