A high area utilization cross-symmetric main and tail inductor applicable to enhanced FoM LC-VCO

A cross-symmetric main&tail inductor with high area utilization is proposed originally. The proposed cross-symmetric main&tail inductor improves the area utilization by using the redundant area of the octagonal main inductor while optimizing the LC-VCO phase noise. Compared with the conventional inductor, the unit area utilization rate is increased from 82.84% to 87.13%. Phase noise is achieved as -129.5 dBc/Hz over LC-VCO based on the cross-symmetric main&tail inductor, which is lower than -120.4 dBc/Hz of the conventional inductor. The output frequency range of the LC-VCO is 2.295 GHz~3.080 GHz, and FOM of LC-VCO is 193.8 dBc/Hz.

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Publication Details

Journal
IEICE Electronics Express
Published
2025-08-17
DOI
https://doi.org/10.1587/elex.22.20250432
Primary Topic
Water Quality and Resources Studies
Type
article
Field-Weighted Citation Impact
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article

A high area utilization cross-symmetric main and tail inductor applicable to enhanced FoM LC-VCO

IEICE Electronics Express
Water Quality and Resources Studies
article

A high area utilization cross-symmetric main and tail inductor applicable to enhanced FoM LC-VCO

article en

Abstract

A cross-symmetric main&tail inductor with high area utilization is proposed originally. The proposed cross-symmetric main&tail inductor improves the area utilization by using the redundant area of the octagonal main inductor while optimizing the LC-VCO phase noise. Compared with the conventional inductor, the unit area utilization rate is increased from 82.84% to 87.13%. Phase noise is achieved as -129.5 dBc/Hz over LC-VCO based on the cross-symmetric main&tail inductor, which is lower than -120.4 dBc/Hz of the conventional inductor. The output frequency range of the LC-VCO is 2.295 GHz~3.080 GHz, and FOM of LC-VCO is 193.8 dBc/Hz.

IEICE Electronics ExpressVol. 22(23)
University of Electronic Science and Technology of China (CN), Chengdu University of Information Technology (CN)
Openalex Percentile: Top 54%
Water Quality and Resources Studies
DOIOpen Access PDFOpenAlex
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A high area utilization cross-symmetric main and tail inductor applicable to enhanced FoM LC-VCO · IEICE Electronics Express (2025) | TGRS Research Map | TGRS