A 12.3-18.5-GHz Single-Core Oscillator Using a Dual-Mode Variable Inductor With a Tunable Self-Resonant Frequency Technique

被引：3

作者：

Liang, Hongzhi ^{[1
]}

Liu, Shubin ^{[1
]}

Shen, Yi ^{[1
]}

Chang, Jun ^{[1
]}

Zhu, Zhangming ^{[1
]}

机构：

[1] Xidian Univ, Sch Microelect, Shaanxi Key Lab Integrated Circuits & Syst, Xian 710071, Peoples R China

来源：

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 2023年 / 71卷 / 03期

基金：

中国国家自然科学基金;

关键词：

LC networks; magnetically coupled; tuning band calibration; variable inductor (VID); voltage-controlled oscillator (VCO); wide frequency tuning range (FTR); LOW-PHASE-NOISE; CMOS VCO;

D O I：

10.1109/TMTT.2022.3222127

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 a single-core broadband voltage-controlled oscillator (VCO), employing a dual-mode variable inductor (VID). By configuring two independent switched-capacitor arrays embedded into a magnetically coupled LC network with a moderately magnetic coupled coefficient, the frequency tuning range (FTR) is improved by the wide inductance reconfigurable range of the X-type mode. Together with 2-bit conventional switched-capacitor banks, the VCO measures an FTR of 40.25% from 12.5 to 18.3 GHz. The low-quality factor (Q) degradation characteristic of the L-type mode is utilized to implement the tuning bands calibration (TBC). After calibration, the tuning voltage can always be calibrated within a small range around the common voltage. The ultimate turning band covers the frequency drift caused by the temperature variation. Designed and fabricated in 65-nm CMOS technology, the measured phase noise after 1/2 division is -114.7 dBc/Hz at 1-MHz offset from the 18.49-GHz carrier frequency. The VCO core exhibits average power dissipation of 9.6 mW from 0.75-V power supply and 0.053 mm(2) die area, while the other circuits are powered by a 1.2-V supply.

引用

页码：1356 / 1365

页数：10