A Method for Optimizing Chirp Linearity of Frequency Modulated Continuous Wave Signal Source Based on Continuous Frequency Step Analysis

Sheng Sun; Leilei Huang; Chunqi Shi; Runxi Zhang

doi:10.12450/j.gtdzx.202505006

A Method for Optimizing Chirp Linearity of Frequency Modulated Continuous Wave Signal Source Based on Continuous Frequency Step Analysis

Sheng Sun, Leilei Huang, Chunqi Shi^*, Runxi Zhang

^*Corresponding author for this work

School of Communication and Electronic Engineering

East China Normal University

Research output: Contribution to journal › Article › peer-review

Abstract

A method for optimizing chirp linearity of frequency-modulated continuous wave （FMCW） signal source based on continuous frequency step analysis was presented in this paper. It analyzed the relationship between the PLL loop bandwidth and the chirp slope， along with the effects of frequency step granularity variation on RMS FM error across the three radar modes： long-range radar， medium-range radar， and short-range radar. Guided by the proposed optimization model， an FMCW signal source is designed in a 55 nm CMOS process， occupying an area of 1.6 mm² and consuming power of 178.4 mW. The prototype achieves a chirp bandwidth of 5.4 GHz and RMS FM errors of 152.7 kHz， 167 kHz， and 201.3 kHz with the chirp slopes being 13.2 MHz/μs， 22 MHz/μs， and 44 MHz/μs， respectively.

Translated title of the contribution	一种基于连续频率阶跃分析的FMCW信号源啁啾线性度优化方法
Original language	English
Article number	050204
Journal	Guti Dianzixue Yanjiu Yu Jinzhan/Research and Progress of Solid State Electronics
Volume	45
Issue number	5
DOIs	https://doi.org/10.12450/j.gtdzx.202505006
State	Published - 25 Oct 2025

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title = "A Method for Optimizing Chirp Linearity of Frequency Modulated Continuous Wave Signal Source Based on Continuous Frequency Step Analysis",

abstract = "A method for optimizing chirp linearity of frequency-modulated continuous wave （FMCW） signal source based on continuous frequency step analysis was presented in this paper. It analyzed the relationship between the PLL loop bandwidth and the chirp slope， along with the effects of frequency step granularity variation on RMS FM error across the three radar modes： long-range radar， medium-range radar， and short-range radar. Guided by the proposed optimization model， an FMCW signal source is designed in a 55 nm CMOS process， occupying an area of 1.6 mm2 and consuming power of 178.4 mW. The prototype achieves a chirp bandwidth of 5.4 GHz and RMS FM errors of 152.7 kHz， 167 kHz， and 201.3 kHz with the chirp slopes being 13.2 MHz/μs， 22 MHz/μs， and 44 MHz/μs， respectively.",

author = "Sheng Sun and Leilei Huang and Chunqi Shi and Runxi Zhang",

note = "Publisher Copyright: {\textcopyright} 2025, Research Progress of Solid State Electronics. All right resevered.",

year = "2025",

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doi = "10.12450/j.gtdzx.202505006",

language = "英语",

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journal = "Guti Dianzixue Yanjiu Yu Jinzhan/Research and Progress of Solid State Electronics",

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publisher = "Research Progress of Solid State Electronics",

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A Method for Optimizing Chirp Linearity of Frequency Modulated Continuous Wave Signal Source Based on Continuous Frequency Step Analysis. / Sun, Sheng; Huang, Leilei; Shi, Chunqi et al.
In: Guti Dianzixue Yanjiu Yu Jinzhan/Research and Progress of Solid State Electronics, Vol. 45, No. 5, 050204, 25.10.2025.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - A Method for Optimizing Chirp Linearity of Frequency Modulated Continuous Wave Signal Source Based on Continuous Frequency Step Analysis

AU - Sun, Sheng

AU - Huang, Leilei

AU - Shi, Chunqi

AU - Zhang, Runxi

PY - 2025/10/25

Y1 - 2025/10/25

N2 - A method for optimizing chirp linearity of frequency-modulated continuous wave （FMCW） signal source based on continuous frequency step analysis was presented in this paper. It analyzed the relationship between the PLL loop bandwidth and the chirp slope， along with the effects of frequency step granularity variation on RMS FM error across the three radar modes： long-range radar， medium-range radar， and short-range radar. Guided by the proposed optimization model， an FMCW signal source is designed in a 55 nm CMOS process， occupying an area of 1.6 mm2 and consuming power of 178.4 mW. The prototype achieves a chirp bandwidth of 5.4 GHz and RMS FM errors of 152.7 kHz， 167 kHz， and 201.3 kHz with the chirp slopes being 13.2 MHz/μs， 22 MHz/μs， and 44 MHz/μs， respectively.

AB - A method for optimizing chirp linearity of frequency-modulated continuous wave （FMCW） signal source based on continuous frequency step analysis was presented in this paper. It analyzed the relationship between the PLL loop bandwidth and the chirp slope， along with the effects of frequency step granularity variation on RMS FM error across the three radar modes： long-range radar， medium-range radar， and short-range radar. Guided by the proposed optimization model， an FMCW signal source is designed in a 55 nm CMOS process， occupying an area of 1.6 mm2 and consuming power of 178.4 mW. The prototype achieves a chirp bandwidth of 5.4 GHz and RMS FM errors of 152.7 kHz， 167 kHz， and 201.3 kHz with the chirp slopes being 13.2 MHz/μs， 22 MHz/μs， and 44 MHz/μs， respectively.

UR - https://www.scopus.com/pages/publications/105021426290

U2 - 10.12450/j.gtdzx.202505006

DO - 10.12450/j.gtdzx.202505006

M3 - 文章

AN - SCOPUS:105021426290

SN - 1000-3819

VL - 45

JO - Guti Dianzixue Yanjiu Yu Jinzhan/Research and Progress of Solid State Electronics

JF - Guti Dianzixue Yanjiu Yu Jinzhan/Research and Progress of Solid State Electronics

IS - 5

M1 - 050204

ER -

A Method for Optimizing Chirp Linearity of Frequency Modulated Continuous Wave Signal Source Based on Continuous Frequency Step Analysis

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