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A Highly Efficient 18–40 GHz Linear Power Amplifier in 40-nm GaN for mm-Wave 5G
IEEE Microwave and Wireless Components Letters ( IF 3 ) Pub Date : 2021-06-02 , DOI: 10.1109/lmwc.2021.3085241
Jill C. Mayeda , Donald Y. C. Lie , Jerry Lopez

A medium-power, highly-efficient broadband linear power amplifier (PA) is designed in a 40-nm GaN technology that covers the key 5G FR2 band of 24–40 GHz. Load-pull simulations suggest better device broadband performance and peak power-added-efficiency (PAE) around $V_{\text {DD}} =4$ –6 V. Measurement data corroborates the simulations and this PA achieves a small-signal 3-dB bandwidth (BW) of 18.0–40.3 GHz, with max. PAE/ $P_{\text {SAT}}$ of 42.1%/18.6 dBm at 28 GHz, and 26.0%/17.2 dBm at 38 GHz at $V_{\text {DD}} = 4$ V. When tested with a 9 MHz $\times \,\, 100$ MHz 256-quadratic-amplitude modulation (QAM) 5G new radio (NR) signal, it achieves an adjacent-channel-leakage-ratio (ACLR) of −27 dBc with $P_{\text {OUT, AVG}}$ /PAE of 11.3 dBm/13.9% at 28 GHz. When compared with state-of-the-art broadband PAs, it achieves the best $S_{21}~3$ -dB BW with excellent peak PAE and linearity. This work also reports the best PAE for broadband medium-power millimeter-wave GaN PA at $P_{\text {SAT}}~\sim 20$ dBm.

中文翻译:

用于毫米波 5G 的 40-nm GaN 高效 18–40 GHz 线性功率放大器

中等功率、高效的宽带线性功率放大器 (PA) 采用 40 纳米 GaN 技术设计,涵盖 24–40 GHz 的关键 5G FR2 频段。负载拉动模拟表明设备宽带性能更好,峰值功率附加效率 (PAE) 大约在 $V_{\text {DD}} =4$ –6 V。测量数据证实了模拟,该 PA 实现了 18.0–40.3 GHz 的小信号 3-dB 带宽 (BW),最大。PAE/ $P_{\text {SAT}}$ 28 GHz 时为 42.1%/18.6 dBm,38 GHz 时为 26.0%/17.2 dBm $V_{\text {DD}} = 4$ V. 使用 9 MHz 测试时 $\times \,\, 100$ MHz 256 平方幅度调制 (QAM) 5G 新无线电 (NR) 信号,它实现了 −27 dBc 的邻道泄漏比 (ACLR) $P_{\text {OUT, AVG}}$ /PAE 在 28 GHz 时为 11.3 dBm/13.9%。与最先进的宽带 PA 相比,它实现了最佳 $S_{21}~3$ -dB BW 具有出色的峰值 PAE 和线性度。这项工作还报告了宽带中等功率毫米波 GaN PA 的最佳 PAE $P_{\text {SAT}}~\sim 20$ 分贝。
更新日期:2021-08-10
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