A Novel 0.1-44 GHz Linear Common-Drain-Cascode 0.15µm GaN Distributed Amplifier Architecture with Improved IP3-BW

K. Kobayashi, D. Denninghoff, Dain Miller
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引用次数: 3

Abstract

This paper reports on a novel 0.1-44 GHz linear common-drain-Cascode (CD-Cascode) GaN distributed amplifier architecture with improved IP3-BW performance. The CD-Cascode DA MMIC is based on a 0.15μm GaN-HEMT wafer process technology. By exploiting the common-drain-Cascode as a transconductance device cell, an improvement in IP3 of 9 dB at mid-band (20GHz) and > 3 dB from 30-44 GHz were achieved as compared to a conventional Cascode DA implementation without sacrificing gain-bandwidth. The resulting amplifier achieves IP3's of 45.2, 34.5, and 33.5 dBm at 20, 40, and 44 GHz, respectively. To the author's knowledge this is believed to be the highest IP3 reported for a GaN DA at these frequencies. The amplifier obtains a nominal gain of 17 dB and maintains greater than 10 dB of gain up to 45 GHz with good input and output return-loss. The new linear CD-Cascode GaN DA MMIC architecture has far-reaching implications to linear coherent fiber optic, broadband wireless, SDR, and instrumentation applications.
一种改进IP3-BW的0.1-44 GHz线性共漏- cascode 0.15µm GaN分布式放大器结构
本文报道了一种新型的0.1-44 GHz线性共漏- cascode (CD-Cascode) GaN分布式放大器结构,该结构具有改进的IP3-BW性能。CD-Cascode DA MMIC基于0.15μm GaN-HEMT晶圆工艺技术。通过利用共漏式Cascode作为跨导器件单元,与传统的Cascode DA实现相比,在不牺牲增益带宽的情况下,在中频(20GHz)实现了9 dB的IP3提高,在30-44 GHz范围内实现了> 3 dB的IP3提高。由此产生的放大器在20ghz、40ghz和44ghz下的IP3分别达到45.2、34.5和33.5 dBm。据作者所知,这被认为是在这些频率下GaN DA报告的最高IP3。该放大器获得17db的标称增益,并在45ghz频率下保持大于10db的增益,具有良好的输入和输出回波损耗。新的线性CD-Cascode GaN - DA - MMIC架构对线性相干光纤、宽带无线、SDR和仪器仪表应用具有深远的意义。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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