Skip to Main Content In this design, the class-E amplifier is
used as peaking amplifier in place of the class-C amplifier in
the traditional inverted Doherty amplifier to obtain higher
power-added efficiency. The load network of class-E peaking
amplifier consists of one impedance matching network and two
harmonic suppression structures. To validate the analysis, a 38
dBm inverted Doherty amplifier with class-E peaking amplifier is
designed and fabricated at 1.96 GHz. The simulated results show
that 11.5% and 1.1% power-added efficiency improvement is
obtained in comparison to balanced class-AB amplifier and
traditional inverted Doherty amplifier at an output power of
38dBm respectively. The second and third harmonics were measured
to be less than -36dBc and -30dBc, respectively, at output power
ranges of 24dBm to 38dBm. Signals Systems and Electronics
(ISSSE), 2010 International Symposium on (Volume:2 ) Date of
Conference: 17-20 Sept. 2010