This article presents fully integrated power amplifiers (PAs) with eight-way low-loss power combining for $D$ -band applications in the GlobalFoundries CMOS 45RFSOI process. The eight-way power combining (four-way differential) common source (C.S.) and cascode amplifiers are implemented using four-stage differential PA unit cells as building blocks. The eight-way power combining network is composed of a four-way balun-short-transmission-line (balun-STL) combiner and a conventional quarter wavelength transmission line (QWL TL) combiner. The simulated two-stage eight-way combiner in situ (loaded) ohmic loss is only 1.1–1.4 dB at 130–150 GHz. The eight-way power-combining C.S. amplifier has a small-signal gain of 24 dB at 140 GHz with a 1.2-V supply and a 3-dB bandwidth of 131–150 GHz. The saturated output power (Psat) and output 1-dB compression point (OP _{1 dB} ) are 16.8–17.5 and 13–14.2 dBm at 130–150 GHz, respectively. The corresponding peak power-added efficiency (PAE) is 11.7%–14.2%. The eight-way power combining cascode amplifier achieves a small-signal gain of 24.8 dB at 135 GHz with a 3-dB bandwidth of 133–148 GHz. The corresponding Psat is 16.3–19 dBm at 125–150 GHz with a peak PAE of 6.5%–12.1%. To the best of our knowledge, these PAs achieve the highest Psat and OP _{1 dB} at the $D$ -band in CMOS.

中文翻译：

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采用 45 nm CMOS RFSOI 的高效 D 频段多路功率组合放大器，具有 17.5”19-dBm Psat 和 14.2”12.1% 峰值 PAE


本文介绍了完全集成的功率放大器 (PA)，具有八路低损耗功率组合，适用于 GlobalFoundries CMOS 45RFSOI 工艺中的 D$ 频段应用。八路功率组合（四路差分）共源 (CS) 和共源共栅放大器是使用四级差分 PA 单元作为构建块来实现的。八路功率组合网络由四路巴伦短传输线（balun-STL）组合器和传统四分之一波长传输线（QWL TL）组合器组成。模拟的两级八路合路器原位（负载）欧姆损耗在 130-150 GHz 时仅为 1.1-1.4 dB。八路功率组合 CS 放大器在 140 GHz 时具有 24 dB 的小信号增益，电源电压为 1.2 V，3 dB 带宽为 131–150 GHz。 130-150 GHz 时，饱和输出功率 (Psat) 和输出 1-dB 压缩点 (OP 1 dB ) 分别为 16.8-17.5 和 13-14.2 dBm。相应的峰值功率附加效率（PAE）为11.7%–14.2%。八路功率组合共源共栅放大器在 135 GHz 下实现了 24.8 dB 的小信号增益，并具有 133–148 GHz 的 3 dB 带宽。相应的 Psat 在 125–150 GHz 时为 16.3–19 dBm，峰值 PAE 为 6.5%–12.1%。据我们所知，这些 PA 在 CMOS 中的 $D$ 频段实现了最高的 Psat 和 OP 1 dB。