A Dual-Core Dual-Mode DCO for S/C-Band Radar

IF 4 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Circuits and Systems II: Express Briefs Pub Date : 2025-04-11 DOI:10.1109/TCSII.2025.3559922

Cao Wan;Xiongyao Luo;Shuai Deng;Boyi Dong;Zhongzhiguang Lu;Yan’ge Wang;Shiquan Wang;Quan Xue;Yuanjin Zheng

引用次数: 0

Abstract

This brief presents a dual-core, dual-mode digital-controlled oscillator (DCO) featuring a novel transformer-based resonator that minimizes parasitics in the switch connection lines and enhances the design flexibility of the resonator. Fabricated using 65-nm CMOS technology, the DCO occupies a die area of 0.76 mm2. Powered by a 1.2-V supply, it consumes between 6.6 and 10.8 mW of DC power. The DCO, utilizing a 127-bit thermometer-code switched varactor array (SVA), achieves a total bandwidth of 63.89%, spanning from 2.52 to 4.88 GHz. Over the entire frequency range, phase noise is measured between −116.14 and −119.34 dBc/Hz, resulting in a FoM ranging from −178.3 to −182.0 dBc/Hz, and a

$\mathbf {FoM}_{\mathbf {T}}$

varying from −194.4 to −198.1 dBc/Hz. This DCO is well-suited as the frequency source for S-band and C-band radar applications.

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一种用于S/ c波段雷达的双核双模DCO

本文介绍了一种双核、双模数字控制振荡器（DCO），该振荡器采用一种新型的基于变压器的谐振器，可以最大限度地减少开关连接线中的寄生效应，并提高谐振器的设计灵活性。DCO采用65纳米CMOS技术制造，占地面积为0.76 mm2。由1.2 v电源供电，它消耗6.6到10.8 mW的直流功率。该DCO采用127位温度计编码开关变容器阵列（SVA），总带宽为63.89%，带宽范围为2.52至4.88 GHz。在整个频率范围内，相位噪声在- 116.14和- 119.34 dBc/Hz之间测量，因此FoM的范围为- 178.3到- 182.0 dBc/Hz, $\mathbf {FoM}_{\mathbf {T}}$的范围为- 194.4到- 198.1 dBc/Hz。该DCO非常适合作为s波段和c波段雷达应用的频率源。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Transactions on Circuits and Systems II: Express Briefs 工程技术-工程：电子与电气

CiteScore

7.90

自引率

20.50%

发文量

883

审稿时长

3.0 months

期刊介绍： TCAS II publishes brief papers in the field specified by the theory, analysis, design, and practical implementations of circuits, and the application of circuit techniques to systems and to signal processing. Included is the whole spectrum from basic scientific theory to industrial applications. The field of interest covered includes: Circuits: Analog, Digital and Mixed Signal Circuits and Systems Nonlinear Circuits and Systems, Integrated Sensors, MEMS and Systems on Chip, Nanoscale Circuits and Systems, Optoelectronic Circuits and Systems, Power Electronics and Systems Software for Analog-and-Logic Circuits and Systems Control aspects of Circuits and Systems.