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首页> 外文期刊>International Journal of Microwave and Wireless Technologies >A wideband CMOS distributed amplifier with slow-wave shielded transmission lines
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A wideband CMOS distributed amplifier with slow-wave shielded transmission lines

机译：具有慢波屏蔽传输线的宽带CMOS分布式放大器

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摘要

A four-stage distributed amplifier utilizing low-loss slow-wave shielded (SWS) transmission lines is implemented in a standard 0.13 μm Complementary Metal-Oxide-Semiconductor (CMOS) technology. The amplifier when biased in its high current oper ating mode of I_Dtotal = 46mA(at V_dd=2.2 V,P_diss = 101 mW) provides aforward transmission gain of 11.3 + 1.5 dBwitha 3-dB bandwidth of 17 GHz and a gain-bandwidth product of 74 GHz. The noise figure (NF) under the same bias condition is better than 8.5 dB up to 10 GHz. The measured output-referred 1-dB compression point is higher than +2 dBm. The amplifier is also measured under low-bias condition of I_Dtotal =18 mA (at V_dd = 1.15 V, P_diss = 20.7 mW). It provides a transmission gain of 6.6 + 1 dB, a 3-dB bandwidth of 14.8 GHz, a gain-bandwidth product of 35.5 GHz, and a NF of better than 8.6 dB up to 10 GHz. Despite using a simple four-stage cascade design, this distributed amplifier achieves very high-gain-bandwidth product at a relatively low DC power compared to the state of the art CMOS distributed amplifiers reported in the literature. This is due to the incorporation of low-loss SWS coplanar waveguide (CPW) transmission lines with a loss factor of nearly 50% of that of standard transmission lines on CMOS-grade Si substrate.
机译：采用低损耗慢波屏蔽（SWS）传输线的四级分布式放大器以标准的0.13μm互补金属氧化物半导体（CMOS）技术实现。放大器以I_Dtotal = 46mA的大电流工作模式偏置时（在V_dd = 2.2 V时，P_diss = 101 mW），可提供11.3 + 1.5 dB的正向传输增益，具有17 GHz的3dB带宽，增益带宽积为74 GHz。在相同的偏置条件下，高达10 GHz的噪声系数（NF）优于8.5 dB。测得的输出参考1 dB压缩点高于+2 dBm。还在I_Dtotal = 18 mA的低偏置条件下（在V_dd = 1.15 V，P_diss = 20.7 mW时）测量放大器。它提供6.6 + 1 dB的传输增益，14.8 GHz的3dB带宽，35.5 GHz的增益带宽乘积以及在10 GHz以下的NF优于8.6 dB。尽管使用了简单的四级级联设计，但与文献中报道的最新CMOS分布式放大器相比，该分布式放大器在相对较低的DC功率下仍可实现很高的增益带宽乘积。这是由于在CMOS级Si基板上并入了损耗因子接近标准传输线损耗因子近50％的低损耗SWS共面波导（CPW）传输线。

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