A Large Tuning-Range LC-VCO Design for Mixer-First Type Receivers

Emirhan Dilekoglu; Mustafa Berke Yelten

doi:10.1109/SMACD65553.2025.11092207

A Large Tuning-Range LC-VCO Design for Mixer-First Type Receivers

Emirhan Dilekoglu^*, Mustafa Berke Yelten

^*Corresponding author for this work

Department of Electronics and Communications Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

In this paper, a 5 GHz low phase noise CMOS LC voltage-controlled oscillator (VCO) for a mixer-first receiver is presented. By utilizing a five-bit binary-weighted switched capacitor bank, the VCO achieves a tuning range of 50.15% from 3.78 GHz to 6.31 GHz. Designed in TSMC 65 nm CMOS technology, the proposed VCO occupies an area of 725 μm×800μm. The VCO achieves a phase noise of -121.99 dBc/Hz at 1 MHz offset from the carrier frequency of 6.31 GHz by using a tail inductor in accordance with the 2f₀ filtering topology to improve phase noise. This performance of the VCO has been accomplished by drawing only 10.03 mW of power from the power supply.

Original language	English
Title of host publication	21st International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuits Design, SMACD 2025
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9798331523954
DOIs	https://doi.org/10.1109/SMACD65553.2025.11092207
Publication status	Published - 2025
Externally published	Yes
Event	21st International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuits Design, SMACD 2025 - Istanbul, Turkey Duration: 7 Jul 2025 → 10 Jul 2025

Publication series

Name	21st International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuits Design, SMACD 2025

Conference

Conference	21st International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuits Design, SMACD 2025
Country/Territory	Turkey
City	Istanbul
Period	7/07/25 → 10/07/25

Bibliographical note

Publisher Copyright:
© 2025 IEEE.

Keywords

5-bit
65 nm CMOS
c-band
capacitor bank
low phase noise
voltage-controlled oscillator

Access to Document

10.1109/SMACD65553.2025.11092207

Cite this

Dilekoglu, E., & Yelten, M. B. (2025). A Large Tuning-Range LC-VCO Design for Mixer-First Type Receivers. In 21st International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuits Design, SMACD 2025 (21st International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuits Design, SMACD 2025). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/SMACD65553.2025.11092207

Dilekoglu, Emirhan ; Yelten, Mustafa Berke. / A Large Tuning-Range LC-VCO Design for Mixer-First Type Receivers. 21st International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuits Design, SMACD 2025. Institute of Electrical and Electronics Engineers Inc., 2025. (21st International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuits Design, SMACD 2025).

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title = "A Large Tuning-Range LC-VCO Design for Mixer-First Type Receivers",

abstract = "In this paper, a 5 GHz low phase noise CMOS LC voltage-controlled oscillator (VCO) for a mixer-first receiver is presented. By utilizing a five-bit binary-weighted switched capacitor bank, the VCO achieves a tuning range of 50.15\% from 3.78 GHz to 6.31 GHz. Designed in TSMC 65 nm CMOS technology, the proposed VCO occupies an area of 725 μm×800μm. The VCO achieves a phase noise of -121.99 dBc/Hz at 1 MHz offset from the carrier frequency of 6.31 GHz by using a tail inductor in accordance with the 2f0 filtering topology to improve phase noise. This performance of the VCO has been accomplished by drawing only 10.03 mW of power from the power supply.",

keywords = "5-bit, 65 nm CMOS, c-band, capacitor bank, low phase noise, voltage-controlled oscillator",

author = "Emirhan Dilekoglu and Yelten, \{Mustafa Berke\}",

note = "Publisher Copyright: {\textcopyright} 2025 IEEE.; 21st International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuits Design, SMACD 2025 ; Conference date: 07-07-2025 Through 10-07-2025",

year = "2025",

doi = "10.1109/SMACD65553.2025.11092207",

language = "English",

series = "21st International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuits Design, SMACD 2025",

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Dilekoglu, E & Yelten, MB 2025, A Large Tuning-Range LC-VCO Design for Mixer-First Type Receivers. in 21st International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuits Design, SMACD 2025. 21st International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuits Design, SMACD 2025, Institute of Electrical and Electronics Engineers Inc., 21st International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuits Design, SMACD 2025, Istanbul, Turkey, 7/07/25. https://doi.org/10.1109/SMACD65553.2025.11092207

A Large Tuning-Range LC-VCO Design for Mixer-First Type Receivers. / Dilekoglu, Emirhan; Yelten, Mustafa Berke.
21st International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuits Design, SMACD 2025. Institute of Electrical and Electronics Engineers Inc., 2025. (21st International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuits Design, SMACD 2025).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - A Large Tuning-Range LC-VCO Design for Mixer-First Type Receivers

AU - Dilekoglu, Emirhan

AU - Yelten, Mustafa Berke

PY - 2025

Y1 - 2025

N2 - In this paper, a 5 GHz low phase noise CMOS LC voltage-controlled oscillator (VCO) for a mixer-first receiver is presented. By utilizing a five-bit binary-weighted switched capacitor bank, the VCO achieves a tuning range of 50.15% from 3.78 GHz to 6.31 GHz. Designed in TSMC 65 nm CMOS technology, the proposed VCO occupies an area of 725 μm×800μm. The VCO achieves a phase noise of -121.99 dBc/Hz at 1 MHz offset from the carrier frequency of 6.31 GHz by using a tail inductor in accordance with the 2f0 filtering topology to improve phase noise. This performance of the VCO has been accomplished by drawing only 10.03 mW of power from the power supply.

AB - In this paper, a 5 GHz low phase noise CMOS LC voltage-controlled oscillator (VCO) for a mixer-first receiver is presented. By utilizing a five-bit binary-weighted switched capacitor bank, the VCO achieves a tuning range of 50.15% from 3.78 GHz to 6.31 GHz. Designed in TSMC 65 nm CMOS technology, the proposed VCO occupies an area of 725 μm×800μm. The VCO achieves a phase noise of -121.99 dBc/Hz at 1 MHz offset from the carrier frequency of 6.31 GHz by using a tail inductor in accordance with the 2f0 filtering topology to improve phase noise. This performance of the VCO has been accomplished by drawing only 10.03 mW of power from the power supply.

KW - 5-bit

KW - 65 nm CMOS

KW - c-band

KW - capacitor bank

KW - low phase noise

KW - voltage-controlled oscillator

UR - https://www.scopus.com/pages/publications/105013469104

U2 - 10.1109/SMACD65553.2025.11092207

DO - 10.1109/SMACD65553.2025.11092207

M3 - Conference contribution

AN - SCOPUS:105013469104

T3 - 21st International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuits Design, SMACD 2025

BT - 21st International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuits Design, SMACD 2025

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 21st International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuits Design, SMACD 2025

Y2 - 7 July 2025 through 10 July 2025

ER -

Dilekoglu E, Yelten MB. A Large Tuning-Range LC-VCO Design for Mixer-First Type Receivers. In 21st International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuits Design, SMACD 2025. Institute of Electrical and Electronics Engineers Inc. 2025. (21st International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuits Design, SMACD 2025). doi: 10.1109/SMACD65553.2025.11092207

A Large Tuning-Range LC-VCO Design for Mixer-First Type Receivers

Abstract

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Bibliographical note

Keywords

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