Abstract
As wideband power amplifiers (PAs) become more power and cost efficient, supporting widely separated frequency bands with a common PA and transmit chain is becoming more practical. Dual band digital pre-distortion (DPD) techniques have been proposed as efficient alternatives to traditional wideband solutions for such applications. In this paper, we propose a novel dual band crest factor reduction technique that works together with a dual band DPD solution. Theoretical analysis is performed to compare the dual band solution with the traditional wideband solution. Performance of the proposed technique was demonstrated with a dual-band signal that has two 10 MHz LTE bands with edge to edge separation of 200MHz.
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