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Reconfigurable radio frequency (RF) circuits will be a predominant solution for future global and compact mobile terminals, which supports 2G, 3G, and LTE cellular systems in various frequency bands. A single-path configuration and use of single-band devices with distributed reconfigurable matching networks have the potential to achieve the optimum RF front-end for future multi-band mobile terminals...
This paper presents a novel configuration for a concurrent multi-band power amplifier (PA). A multi-band matching network comprises a multi-section impedance transformer that achieves matching in multiple bands. The proposed impedance transformer provides flexibility in the design of a concurrent multi-band PA in a wide frequency range. The impedance transformer is compact since each section comprises...
This paper presents a novel MEMS-based reconfigurable multi-band power amplifier (PA) that employs a newly proposed reconfigurable biasing network and partitioned LTCC substrates. The biasing network comprises transmission lines, capacitors, and switches. Because DC bias current does not flow through switches, the proposed network functions as a multi-band low-loss biasing network. The partitioned...
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