Design of a mixed load‐modulation balanced power amplifier with ultra‐extended power back‐off range
Zhiwei Zhang,
Ruizhe Zhang,
Xuefei Xuan
Abstract:SummaryThis paper proposes a mixed design strategy to expand the power back‐off (OBO) range of the pseudo‐Doherty load‐modulation balanced power amplifier (LMBA). An asymmetric LMBA configuration is employed to increase the OBO range. The two PA branches of the balanced PA operate in different class‐C modes, thereby obtaining two OBO points. Further, an asymmetrical coupler is also introduced into the asymmetrical LMBA architecture to expand the OBO. Here, the relationship between the OBO and coupler's paramet… Show more
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