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- Title
High efficiency GaN current-mode class-D amplifier at 2.6 GHz using pure differential transmission line filters.
- Authors
Sigg, A.; Heck, S.; Bräckle, A.; Berroth, M.
- Abstract
In class-D operation the impedances of the output network at each harmonic frequency at the intrinsic terminals of the transistors are of main importance. This reported work demonstrates a new concept using pure differential transmission line filters for the matching of these impedances. Furthermore, de-embedding techniques are used to compensate the impedance transforming characteristics of the package parasitics. A current-mode class-D (CMCD) amplifier with a power-added efficiency (PAE) of 62% and a corresponding output power of 29.5 W at 2.6 GHz has been demonstrated. To the authors' knowledge, these are the highest reported values of the PAE as well as the output power at this frequency for a CMCD.
- Subjects
ELECTRIC properties of gallium nitride; ENERGY consumption; ELECTRIC power transmission; ELECTRONIC amplifiers; ELECTRIC lines; ELECTRIC impedance
- Publication
Electronics Letters (Wiley-Blackwell), 2013, Vol 49, Issue 1, p87
- ISSN
0013-5194
- Publication type
Article
- DOI
10.1049/el.2012.3984