A 23.4-27.6 GHz "Zig-Zag" VCO with Continuous Frequency Switching for FMCW Radars

被引：1

作者：

Lu, Yuri ^{[1
]}

Shi, Chunqi ^{[1
]}

Li, Jinge ^{[1
]}

Zhang, Runxi ^{[1
]}

Deng, Hao ^{[2
]}

Chen, Jinghong ^{[2
]}

机构：

[1] East China Normal Univ, Inst Microelect Circuits & Syst, Shanghai, Peoples R China

[2] Univ Houston, Dept Elect & Comp Engn, Houston, TX USA

来源：

2022 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS (ISCAS 22) | 2022年

基金：

国家重点研发计划;

关键词：

Voltage-controlled oscillator (VCO); tuning range; phase noise; FMCW; multi-band VCO; zig-zag; TRANSCEIVER;

D O I：

10.1109/ISCAS48785.2022.9937550

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 paper presents a continuous frequency switching zig-zag voltage-controlled oscillator (VCO) to overcome the frequency discontinuity problem during the band switching process in multi-band wideband VCOs. Complementary PMOS and NMOS varactors are explored to realize opposite VCO tuning gains with high linearity. The VCO reduces the nonlinearity of the transmitted chirp in frequency-modulated continuous-wave (FMCW) radars, improving the range resolution. Implemented in a 40-nm CMOS technology, the proposed zig-zag multi-band VCO shows a simulated maximum peak frequency error of 10 MHz over 23.4-27.6 GHz frequency range, a -106.6 dBc/Hz phase noise at 1 MHz offset, and a -183.1 dBc/Hz FoM while consuming 12.69 mW power.

引用

页码：3355 / 3358

页数：4

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