正交压控振荡器广泛应用于无线收发机中,为其提供本振信号源。功耗和相位噪声是振荡器的两项非常重要的指标,功耗的高低直接影响设备的使用时间,而相位噪声决定了信号源的纯度。设计了一种由PMOS管构成的超低功耗压控振荡器。与传统正...正交压控振荡器广泛应用于无线收发机中,为其提供本振信号源。功耗和相位噪声是振荡器的两项非常重要的指标,功耗的高低直接影响设备的使用时间,而相位噪声决定了信号源的纯度。设计了一种由PMOS管构成的超低功耗压控振荡器。与传统正交振荡器相比,通过电容反馈和衬底偏置技术,所设计的电路具有超低功耗、低相位噪声及高输出摆幅等特点。在Cadence IC 5141软件中仿真,仿真结果显示在0.46 V电源电压下,功耗仅仅0.842 m W,工作频率为2.4 GHz时,其相位噪声是118.6 d Bc/Hz@1-MHz。展开更多
提出了一种基于衬底注入技术的正交压控振荡器(QVCO)。此QVCO的实现是基于两个电感电容压控振荡器的耦合作用,并没有任何额外的耦合器件。在相位噪声、正交相位误差、调谐范围以及功耗方面,对所提出的QVCO与传统的QVCO进行了比较。仿真...提出了一种基于衬底注入技术的正交压控振荡器(QVCO)。此QVCO的实现是基于两个电感电容压控振荡器的耦合作用,并没有任何额外的耦合器件。在相位噪声、正交相位误差、调谐范围以及功耗方面,对所提出的QVCO与传统的QVCO进行了比较。仿真表明:该QVCO在4.1 GHz处取得了0.62°的正交相位误差,采用标准的0.13μm互补金属氧化物半导体(CMOS)工艺对该QVCO进行流片实现,芯片面积为0.51 mm×0.87 mm。测试结果表明:在3.95 GHz处的相位误差为-118.5 d Bc/Hz@1MHz,在0.5 V电源电压供电下,消耗的功耗为0.41 m W,适用于低功耗需求场合。展开更多
A design and implementation for a 2.4GHz quadrature output frequency synthesizer intended for bluetooth in 0. 35μm CMOS technology are presented. A differentially controlled quadrature voltage-controlled oscillator ...A design and implementation for a 2.4GHz quadrature output frequency synthesizer intended for bluetooth in 0. 35μm CMOS technology are presented. A differentially controlled quadrature voltage-controlled oscillator （QVCO） is employed to generate quadrature （I/Q） signals. A second-order loop filter, with a unit gain transconductance amplifier having the performance of a third-order loop filter,is exploited for low cost. The measured spot phase noise is -106.15dBc/Hz@ 1MHz. Close-in phase noise is less than -70dBc/Hz. The synthesizer consumes 13.5mA under a 3.3V voltage supply. The core size is 1.3mm×0. 8mm.展开更多
A voltage controlled oscillator (VCO) which can generate 2 4GHz quadrature local oscillating (LO) signals is reported.It combines a LC VCO,realized by on chip symmetrical spiral inductors and differential diodes,an...A voltage controlled oscillator (VCO) which can generate 2 4GHz quadrature local oscillating (LO) signals is reported.It combines a LC VCO,realized by on chip symmetrical spiral inductors and differential diodes,and a two stage ring VCO.The principle of this VCO is demonstrated and further the phase noise is discussed in detail.The fabrication of prototype is demonstrated using 0 25μm single poly five metal N well salicide CMOS digital process.The reports show that the novel VCO is can generate quadrature LO signals with a tuning range of more than 300MHz as well as the phase noise--104 33dBc/Hz at 600KHz offset at 2 41GHz (when measuring only one port of differential outputs).In addition,this VCO can work in low power supply voltage and dissipate low power,thus it can be used in many integrated transceivers.展开更多
文摘正交压控振荡器广泛应用于无线收发机中,为其提供本振信号源。功耗和相位噪声是振荡器的两项非常重要的指标,功耗的高低直接影响设备的使用时间,而相位噪声决定了信号源的纯度。设计了一种由PMOS管构成的超低功耗压控振荡器。与传统正交振荡器相比,通过电容反馈和衬底偏置技术,所设计的电路具有超低功耗、低相位噪声及高输出摆幅等特点。在Cadence IC 5141软件中仿真,仿真结果显示在0.46 V电源电压下,功耗仅仅0.842 m W,工作频率为2.4 GHz时,其相位噪声是118.6 d Bc/Hz@1-MHz。
文摘提出了一种基于衬底注入技术的正交压控振荡器(QVCO)。此QVCO的实现是基于两个电感电容压控振荡器的耦合作用,并没有任何额外的耦合器件。在相位噪声、正交相位误差、调谐范围以及功耗方面,对所提出的QVCO与传统的QVCO进行了比较。仿真表明:该QVCO在4.1 GHz处取得了0.62°的正交相位误差,采用标准的0.13μm互补金属氧化物半导体(CMOS)工艺对该QVCO进行流片实现,芯片面积为0.51 mm×0.87 mm。测试结果表明:在3.95 GHz处的相位误差为-118.5 d Bc/Hz@1MHz,在0.5 V电源电压供电下,消耗的功耗为0.41 m W,适用于低功耗需求场合。
文摘A design and implementation for a 2.4GHz quadrature output frequency synthesizer intended for bluetooth in 0. 35μm CMOS technology are presented. A differentially controlled quadrature voltage-controlled oscillator （QVCO） is employed to generate quadrature （I/Q） signals. A second-order loop filter, with a unit gain transconductance amplifier having the performance of a third-order loop filter,is exploited for low cost. The measured spot phase noise is -106.15dBc/Hz@ 1MHz. Close-in phase noise is less than -70dBc/Hz. The synthesizer consumes 13.5mA under a 3.3V voltage supply. The core size is 1.3mm×0. 8mm.
文摘A voltage controlled oscillator (VCO) which can generate 2 4GHz quadrature local oscillating (LO) signals is reported.It combines a LC VCO,realized by on chip symmetrical spiral inductors and differential diodes,and a two stage ring VCO.The principle of this VCO is demonstrated and further the phase noise is discussed in detail.The fabrication of prototype is demonstrated using 0 25μm single poly five metal N well salicide CMOS digital process.The reports show that the novel VCO is can generate quadrature LO signals with a tuning range of more than 300MHz as well as the phase noise--104 33dBc/Hz at 600KHz offset at 2 41GHz (when measuring only one port of differential outputs).In addition,this VCO can work in low power supply voltage and dissipate low power,thus it can be used in many integrated transceivers.
