Design methodology for distributed power amplifier in Software-Defined Radio applications
Design methodology for distributed power amplifier in Software-Defined Radio applications
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发表时间：
2013-12
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通讯作者：
D. Palombini;A. Bentini;M. Palomba;Sergio Dibello;E. Limiti
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作者：
D. Palombini;A. Bentini;M. Palomba;Sergio Dibello;E. Limiti
在这篇文章中，提出了一种新的分布式功率放大器的设计方法，基于矢量电流组合的概念。所提出的技术，改进了传统的排水线锥形的方法，被证明是特别适合在软件定义无线电（SDR）和认知无线电（CR）的应用。为了验证该方案的可行性，设计了一个MMIC功率放大器，在1-3GHz频段内增益为17 dB，输出功率为28 dBm，DC/RF转换效率为23%。最终芯片尺寸为3.5× 2 mm 2。
In this contribution a new design methodology for distributed power amplifiers is presented, based on vector current combination concept. The proposed technique, improving traditional drain line tapering approaches, proves to be particularly suitable in Software Defined Radio (SDR) and Cognitive Radio (CR) applications. In order to verify the feasibility of the proposed strategy, the design of a MMIC power amplifier is presented, featuring 17dB gain in the whole 1-3GHz band with an output power of 28dBm and a 23% of associated DC/RF conversion efficiency. The resulting chip size is 3.5×2mm2.