具体原因有待计算。 2、Hooman Darabi的射频电路教材中提出class C的尾电流源和class-B相比,其高阻抗具有degneration作用。即:MOS管的负阻是小信号的概念,大信号下,实际电路工作为开关新式,当电路振荡到峰值时,一侧管子关闭,一侧管子开启,此时开启的管子表现为并联的正电阻,对LC tank的Q值有恶化作用。因此带尾电流...
Matsuzawa "Class-C VCO with amplitude feedback loopfor robust start-up and enhanced oscillation swing", IEEEJ. Solid-State Circuits , vol. 48, no. 2, pp.429 -440 2013DENG W, OKADA K, MATSUZAWA A. Class-C VCO with amplitude feedback loop for robust start-up and ...
In this paper, a Class-C PA-VCO cell tailored to FSK/GFSK transmitters is presented. In the proposed solution, a Class-C VCO and a common-gate stage PA are stacked in a current-reuse architecture operating with 1.2 V power supply. The PA and the VCO efficiencies are maximized by adjusti...
Low-phase noise Class-C VCO with dynamic body bias Tuning range of VCO is 0.72 GHz, from 2.48 to 3.3 GHz, whereas the control voltage was tuned from 0 to 2 V. The VCO occupies a chip area of ... SL Jang,JJ Wang - 《Electronics Letters》 被引量: 0发表: 2017年 A VERY LOW NOIS...
Measurement demonstrates the VCO has a 20% tuning range and phase noise of -123.0 dBc/Hz at 1 MHz offset from a 3.1 GHz carrier while consuming 1.57-mW power from a 1 V supply, yielding a Figure-of-Merit (FoM) of 191.1. While operating under the minimum power of 560 μW, it ...
R. Zheng, "A low power, startup ensured and constant amplitude class-C VCO in 0.18 CMOS," IEEE Microw. Wireless Compon. Lett., vol. 21, no. 8, pp. 427-429, Aug. 2011.Jian Chen, Fredrik Jonsson, Mats Carlsson, Charlotta Hedenas, and Li-Rong Zheng, "A Low Power, Startup ...
本发明属于无线通信技术领域,涉及锁相环中的电压控制振荡器(VCO),具体为一种Class‑F压控振荡器。本发明包括:第一谐振腔,交叉耦合管对及第二谐振腔,其中,第一谐振腔谐振于ω 法律状态 法律状态公告日 法律状态信息 法律状态 2020-01-10 公开 公开 2020-01-10 公开 公开 2020-02-11 实质审查的生效 实质审...
A 40-GHz hybrid class-AB/class-BCMOSVCO with a current-combining transformer A 40‐GHz hybrid class‐AB/class‐B CMOS VCO with a current‐combining transformer (CCT) using a 65‐nm RF CMOS process is presented. The hybrid class‐AB/... J Oh,J Jang,S Hong - 《Microwave & Optical Te...
This paper implements a complementary Class-C digitally controlled oscillator (DCO) with differential transistor pairs. The transistors are dynamically biased by feedback loops separately benefiting the robust oscillation start-up with low power consumption. By optimizing three switched capacitor arrays and...
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