Analysis and Design of Power Supply Circuits for RF Oscillators

被引：7

作者：

Urso, Alessandro ^{[1
]}

Chen, Yue ^{[1
]}

Dijkhuis, Johan F. ^{[2
]}

Liu, Yao-Hong ^{[2
]}

Babaie, Masoud ^{[1
]}

Serdijn, Wouter A. ^{[1
]}

机构：

[1] Delft Univ Technol, Microelectron Dept, NL-2628 CD Delft, Netherlands

[2] Imec NL, Holst Ctr, NL-5656 AE Eindhoven, Netherlands

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS | 2020年 / 67卷 / 12期

关键词：

Power supplies; DC-DC power converters; Transistors; Switches; Resistors; Phase noise; Power supply requirements; switched-capacitor DC-DC converter; noise analysis; LDO; reverse isolation of power supply circuits; LC oscillator; spur reduction block; LOW-DROPOUT REGULATOR; REDUCTION TECHNIQUE; LOW-NOISE; HIGH PSR; VOLTAGE;

D O I：

10.1109/TCSI.2020.3020001

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：

This article presents guidelines for designing the power supply blocks of RF oscillators. To preserve their spectral purity, the requirements on the noise and ripple of the supply voltage are firstly evaluated based on the oscillator supply pushing factor and the oscillator Figure-of-Merit (FOM). Those specifications are then employed to design and estimate the power efficiency of an analog low-dropout regulator (LDO) and a switched-capacitor DC-DC converter. As a proof of concept, a 2:1 or 3:2 switched-capacitor DC-DC converter is implemented and directly connected to our previously published 4.9 - 5.5 GHz LC oscillator. The converter provides a 1V supply voltage with a noise <= 0.9nV/root Hz at 1MHz and does not affect the inherent phase noise of the oscillator. The ripple amplitude of the converter is 30mV while its effect is suppressed by the spur reduction block embedded in the oscillator.

引用

页码：4233 / 4246

页数：14

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