Details

Autor(en) / Beteiligte

• Aref, A. F.
• Askar, A.
• Werner, S.
• Pozdniakov, D.
• Kalim, D.
• Negra, R.

Titel

Efficiency boosting of multilevel LINC transmitter

Ist Teil von

• Asia-Pacific Microwave Conference 2011, 2011, p.127-130

Ort / Verlag

IEEE

Erscheinungsjahr

2011

Quelle

IEEE/IET Electronic Library (IEL)

Beschreibungen/Notizen

• A multilevel output outphasing transmitter has been developed to boost efficiency considerably over regular LINC transmitter. The system consists of four identical class-E power amplifiers (PAs) in hybrid design operating at 3.3 GHz and delivering a peak output power of 40.5 dBm. By controlling the supply voltage of the four PA units a fully symmetrical multilevel outphasing behaviour can be achieved with a power added efficiency (PAE) enhancement over a range of more than 25 dB of output power back-off. By comparing system measurement results with conventional outphasing transmitter a peak PAE enhancement of 33 % points and a maximum DC power saving of 21 Watts were achieved.