Low group delay 3.1-10.6GHz power amplifier for UWB applications
Low group delay 3.1-10.6GHz power amplifier for UWB applications
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适用于 UWB 应用的低群延迟 3.1-10.6GHz 功率放大器
DOI：
10.1109/lmwc.2011.2176475
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发表时间：
2012
影响因子：
3
通讯作者：
et al
中科院分区：
文献类型：
--
作者：
R.Sapawi;et al
提出了一种基于CMOS工艺的低群时延超宽带功率放大器的设计方案。PA设计采用三级级联共源拓扑结构，其设计理念与其他多级拓扑结构不同，可提供宽带宽特性、增益平坦度和低群延迟变化。在放大器的第一级采用了电阻并联反馈技术，以实现良好的输入匹配，从而控制UWB系统的上限频率。第三级实现较低转折频率处的增益，第二级用于平滑增益曲线的平坦度。通过使用这种方法，所提出的设计具有最低的群延迟变化之间最近报道的CMOS PA为3.1至10.6 GHz的应用。
This letter proposes the design of a low group delay ultra-wideband (UWB) power amplifier (PA) in CMOS technology. The PA design employs a three-stage cascade common source topology that has a different design concept from other multi-stage topology to provide a broad bandwidth characteristic, gain flatness of , and low group delay variation of . A resistive shunt feedback technique is adopted at the first stage of the amplifier to achieve good input matching, which controls the upper frequency of the UWB system. The third stage realizes the gain at the lower corner frequency and the second stage is used to smooth the flatness of the gain curve. By using this method, the proposed design has the lowest group delay variation among the recently reported CMOS PAs for 3.1 to 10.6 GHz applications.