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Advanced Doherty PA, Backoff Range and Bandwidth Extension Concepts
The talk will focus on advanced DPA concepts such as sequential version and the voltage-combining approach both from theoretical as well as implementation perspective. These advanced concepts aim at increasing simultaneously the bandwidth of the DPA and/or the backoff efficiency range. Eventually, a general approach is introduced to extend both the bandwidth as well as the backoff range for any type of Doherty power amplifier including the one discussed in detail in this talk. Practical design considerations will be given based on monolithically and hybrid implemented demonstrators.