A 26-32GHz Differential Attenuator with 0.23dB RMS Attenuation Error and 11.2dBm IP1dB in 40nm CMOS Process

An Sun; Junjie Gu; Hao Xu; Weitian Liu; Kefeng Han; Rui Yin; Zongming Duan; Hao Gao; Na Yan

doi:10.1109/IMS37964.2023.10188142

A 26-32GHz Differential Attenuator with 0.23dB RMS Attenuation Error and 11.2dBm IP1dB in 40nm CMOS Process

An Sun, Junjie Gu, Hao Xu, Weitian Liu, Kefeng Han, Rui Yin, Zongming Duan, Hao Gao, Na Yan

Integrated Circuits

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

6 Citations (Scopus)

Abstract

This paper presents a 26-32GHz 6-bit differential attenuator in 40nm CMOS process. This attenuator adopts an optimized cascade scheme that incorporates simplified T-type (ST-type), T-type and Π-type attenuator units. Driven by a complete analysis of the pole-zero pattern introduced by the compensation capacitor, the design achieves a state-of-art uncalibrated RMS attenuation and phase error. The design methodology of shunt branches for constant phase and cascade linearity enhancement achieves a high linearity while minimizing the phase variation across the whole frequency band. The attenuator achieves a 31.5dB attenuation range with 0.5dB step and -8.5 to -9.5dB insertion loss in a compact area of 0.54mm×0.23mm. The measured RMS attenuation error remains below 0.23dB without calibration and phase error is less than 5.58◦. IP1dB in the reference state is better than 11.2dBm across 26–32GHz.

Original language	English
Title of host publication	2023 IEEE/MTT-S International Microwave Symposium - IMS 2023
Publisher	Institute of Electrical and Electronics Engineers
Chapter	Tu3B-2
Pages	178-181
Number of pages	4
ISBN (Electronic)	9798350347647
ISBN (Print)	979-8-3503-4765-4
DOIs	https://doi.org/10.1109/IMS37964.2023.10188142
Publication status	Published - 28 Jul 2023
Event	2023 IEEE MTT-S International Microwave Symposium, IMS 2023 - San Diego, United States Duration: 11 Jun 2023 → 16 Jun 2023

Conference

Conference	2023 IEEE MTT-S International Microwave Symposium, IMS 2023
Abbreviated title	IMS 2023
Country/Territory	United States
City	San Diego
Period	11/06/23 → 16/06/23

Keywords

Microwave measurement
Attenuators
Phase measurement
Measurement uncertainty
Area measurement
Linearity
Attenuation measurement
linearity
differential attenuator
CMOS
phase compensation
attenuation/phase error
mm-wave

Access to Document

10.1109/IMS37964.2023.10188142

Cite this

Sun, A., Gu, J., Xu, H., Liu, W., Han, K., Yin, R., Duan, Z., Gao, H., & Yan, N. (2023). A 26-32GHz Differential Attenuator with 0.23dB RMS Attenuation Error and 11.2dBm IP1dB in 40nm CMOS Process. In 2023 IEEE/MTT-S International Microwave Symposium - IMS 2023 (pp. 178-181). Article 10188142 Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/IMS37964.2023.10188142

@inproceedings{9d72681b9bf54b758dba785c28a05c77,

title = "A 26-32GHz Differential Attenuator with 0.23dB RMS Attenuation Error and 11.2dBm IP1dB in 40nm CMOS Process",

abstract = "This paper presents a 26-32GHz 6-bit differential attenuator in 40nm CMOS process. This attenuator adopts an optimized cascade scheme that incorporates simplified T-type (ST-type), T-type and Π-type attenuator units. Driven by a complete analysis of the pole-zero pattern introduced by the compensation capacitor, the design achieves a state-of-art uncalibrated RMS attenuation and phase error. The design methodology of shunt branches for constant phase and cascade linearity enhancement achieves a high linearity while minimizing the phase variation across the whole frequency band. The attenuator achieves a 31.5dB attenuation range with 0.5dB step and -8.5 to -9.5dB insertion loss in a compact area of 0.54mm×0.23mm. The measured RMS attenuation error remains below 0.23dB without calibration and phase error is less than 5.58◦. IP1dB in the reference state is better than 11.2dBm across 26–32GHz.",

keywords = "Microwave measurement, Attenuators, Phase measurement, Measurement uncertainty, Area measurement, Linearity, Attenuation measurement, linearity, differential attenuator, CMOS, phase compensation, attenuation/phase error, mm-wave",

author = "An Sun and Junjie Gu and Hao Xu and Weitian Liu and Kefeng Han and Rui Yin and Zongming Duan and Hao Gao and Na Yan",

year = "2023",

month = jul,

day = "28",

doi = "10.1109/IMS37964.2023.10188142",

language = "English",

isbn = "979-8-3503-4765-4",

pages = "178--181",

booktitle = "2023 IEEE/MTT-S International Microwave Symposium - IMS 2023",

publisher = "Institute of Electrical and Electronics Engineers",

address = "United States",

note = "2023 IEEE MTT-S International Microwave Symposium, IMS 2023, IMS 2023 ; Conference date: 11-06-2023 Through 16-06-2023",

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Sun, A, Gu, J, Xu, H, Liu, W, Han, K, Yin, R, Duan, Z, Gao, H & Yan, N 2023, A 26-32GHz Differential Attenuator with 0.23dB RMS Attenuation Error and 11.2dBm IP1dB in 40nm CMOS Process. in 2023 IEEE/MTT-S International Microwave Symposium - IMS 2023., 10188142, Institute of Electrical and Electronics Engineers, pp. 178-181, 2023 IEEE MTT-S International Microwave Symposium, IMS 2023, San Diego, California, United States, 11/06/23. https://doi.org/10.1109/IMS37964.2023.10188142

A 26-32GHz Differential Attenuator with 0.23dB RMS Attenuation Error and 11.2dBm IP1dB in 40nm CMOS Process. / Sun, An; Gu, Junjie; Xu, Hao et al.
2023 IEEE/MTT-S International Microwave Symposium - IMS 2023. Institute of Electrical and Electronics Engineers, 2023. p. 178-181 10188142.

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

TY - GEN

T1 - A 26-32GHz Differential Attenuator with 0.23dB RMS Attenuation Error and 11.2dBm IP1dB in 40nm CMOS Process

AU - Sun, An

AU - Gu, Junjie

AU - Xu, Hao

AU - Liu, Weitian

AU - Han, Kefeng

AU - Yin, Rui

AU - Duan, Zongming

AU - Gao, Hao

AU - Yan, Na

PY - 2023/7/28

Y1 - 2023/7/28

N2 - This paper presents a 26-32GHz 6-bit differential attenuator in 40nm CMOS process. This attenuator adopts an optimized cascade scheme that incorporates simplified T-type (ST-type), T-type and Π-type attenuator units. Driven by a complete analysis of the pole-zero pattern introduced by the compensation capacitor, the design achieves a state-of-art uncalibrated RMS attenuation and phase error. The design methodology of shunt branches for constant phase and cascade linearity enhancement achieves a high linearity while minimizing the phase variation across the whole frequency band. The attenuator achieves a 31.5dB attenuation range with 0.5dB step and -8.5 to -9.5dB insertion loss in a compact area of 0.54mm×0.23mm. The measured RMS attenuation error remains below 0.23dB without calibration and phase error is less than 5.58◦. IP1dB in the reference state is better than 11.2dBm across 26–32GHz.

AB - This paper presents a 26-32GHz 6-bit differential attenuator in 40nm CMOS process. This attenuator adopts an optimized cascade scheme that incorporates simplified T-type (ST-type), T-type and Π-type attenuator units. Driven by a complete analysis of the pole-zero pattern introduced by the compensation capacitor, the design achieves a state-of-art uncalibrated RMS attenuation and phase error. The design methodology of shunt branches for constant phase and cascade linearity enhancement achieves a high linearity while minimizing the phase variation across the whole frequency band. The attenuator achieves a 31.5dB attenuation range with 0.5dB step and -8.5 to -9.5dB insertion loss in a compact area of 0.54mm×0.23mm. The measured RMS attenuation error remains below 0.23dB without calibration and phase error is less than 5.58◦. IP1dB in the reference state is better than 11.2dBm across 26–32GHz.

KW - Microwave measurement

KW - Attenuators

KW - Phase measurement

KW - Measurement uncertainty

KW - Area measurement

KW - Linearity

KW - Attenuation measurement

KW - linearity

KW - differential attenuator

KW - CMOS

KW - phase compensation

KW - attenuation/phase error

KW - mm-wave

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U2 - 10.1109/IMS37964.2023.10188142

DO - 10.1109/IMS37964.2023.10188142

M3 - Conference contribution

SN - 979-8-3503-4765-4

SP - 178

EP - 181

BT - 2023 IEEE/MTT-S International Microwave Symposium - IMS 2023

PB - Institute of Electrical and Electronics Engineers

T2 - 2023 IEEE MTT-S International Microwave Symposium, IMS 2023

Y2 - 11 June 2023 through 16 June 2023

ER -

A 26-32GHz Differential Attenuator with 0.23dB RMS Attenuation Error and 11.2dBm IP1dB in 40nm CMOS Process

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