Charge-Controlled Oscillators and Their Application in Frequency Synthesis

被引：0

作者：

Kaushik, Roohie ^{[1
]}

Chatterjee, Shouri ^{[1
]}

Visweswaran, G. S. ^{[1
]}

机构：

[1] Indian Inst Technol Delhi, Dept Elect Engn, New Delhi 110016, India

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS | 2017年 / 64卷 / 10期

关键词：

Digitally controlled oscillators (DCOs); frequency synthesizer; Gaussian surface; LC oscillator; loop band-width; loop filter; phase-locked loop (PLL); voltage-controlled oscillators (VCOs);

D O I：

10.1109/TCSII.2016.2563738

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A tunable oscillator, whose frequency is a function of the total charge in the oscillating nodes, is introduced in this brief. Three variants of charge-controlled oscillators (QCOs) that oscillate around 3.6 GHz are presented. The figure-of-merits (FoMs) of these oscillators, obtained from simulation, are 169, 172, and 178 dB, respectively. The measured FoM of the third QCO is 179 dB. We also show that the use of a QCO in a frequency synthesizer eliminates the requirement of an explicit loop filter. Furthermore, an example of an all-digital phase-locked loop based on a QCO is shown.

引用

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页码：1127 / 1131

页数：5

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