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

11 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{\texttimes}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{\textendash}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",

}

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

UR - https://www.scopus.com/pages/publications/85168544555

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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Keywords

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