Distributed active transformer - A new power-combining and impedance-transformation technique
Distributed active transformer - A new power-combining and impedance-transformation technique
复制标题
DOI：
10.1109/22.981284
复制
发表时间：
2002-01-01
影响因子：
4.3
通讯作者：
Hajimiri, A
中科院分区：
文献类型：
--
作者：
Aoki, I;Kee, SD;Hajimiri, A
在本文中，我们将新引入的分布式有源变压器（DAT）结构的性能与传统片上阻抗变换方法的性能进行了比较。分析了采用标准硅工艺技术设计高功率全集成放大器时的基本功率效率限制。 DAT 被证明是一种有效的阻抗变换和功率组合方法，它通过磁耦合将多个低压推挽放大器串联在一起。为了证明新概念的有效性，我们使用 0.35μm CMOS 晶体管制造了一个 2.4GHz 1.9W 2V 全集成功率放大器，其功率附加效率为 41%，输入和输出匹配为 50Ω。
In this paper, we compare the performance of the newly introduced distributed active transformer (DAT) structure to that of conventional on-chip impedance-transformations methods. Their fundamental power-efficiency limitations in the design of high-power fully integrated amplifiers in standard silicon process technologies are analyzed. The DAT is demonstrated to be an efficient impedance-transformation and power-combining method, which combines several low-voltage push-pull amplifiers in series by magnetic coupling. To demonstrate the validity of the new concept, a 2.4-GHz 1.9-W 2-V fully integrated power-amplifier achieving a power-added efficiency of 41% with 50-Omega input and output matching has been fabricated using 0.35-mum CMOS transistors.