A 15/20/30/40 GHz multi-band push-push VCO using dual-resonant LC resonator

R. Weng, Y. Chiang, Hung-Chi Chen, R. Huang
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引用次数: 1

Abstract

A quad-band voltage-controlled oscillator (QBVCO) is proposed for multi-band satellite communication systems. The presented QBVCO is designed with a transformer feedback topology in a standard 180-nm CMOS technology. By improving the LC-tanks, the output signals of QBVCO exhibit four oscillation frequencies within the satellite communication bands. The lower bands, 15/20GHz, are generated by adopting dual-resonant LC resonators. The lower bands can be tuned by varying the control voltage of the varactors. The higher bands, 30/40GHz, are obtained by adding a push-push frequency doubler. The power consumption is 11.31mW at 1.5V supply voltage. The designed low power quad-band VCO has advantages of low phase noise and high output signal power without an extra negative supply voltage.
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15/20/30/40 GHz多频段推推式压控振荡器,采用双谐振LC谐振器
提出了一种用于多波段卫星通信系统的四波段压控振荡器(QBVCO)。所提出的QBVCO采用标准180纳米CMOS技术的变压器反馈拓扑结构设计。通过对lc -tank的改进,QBVCO的输出信号在卫星通信频带内呈现出四个振荡频率。较低频段15/20GHz采用双谐振LC谐振器产生。低频段可以通过改变变容管的控制电压来调谐。更高的频段,30/40GHz,是通过增加推推倍频器获得的。在1.5V供电电压下,功耗为11.31mW。所设计的低功耗四频带压控振荡器具有相位噪声低、输出信号功率大等优点,无需额外的负电源电压。
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