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In this paper, a comparison between the concurrent multi-band and parallel single-band power amplifier architectures is analyzed. A generalized framework in which these two architectures can be compared in terms of cost, drain efficiency, output power, and linearity is developed. Results show that in general, a concurrent multi-band power amplifier will have worse performance than a parallel single-band...
This paper presents two different switchless (concurrent) dual-band load networks for class E power amplifier at 800 MHz and 1.9 GHz for 4G LTE standards. The two presented load structures, the all-lumped element and the transformer-based structure not only provide optimal impedance at both fundamental frequencies but also present high impedance up to their 3rd harmonics. Simulated PAEs for the all-lumped...
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