Design of Miniaturized Broadband Quadrature Couplers Using Silicon-Based 3-D Integration Process

Yining Wang; Qingyuan Wang; Huanyao Liu; Bo Li; Feng Lin; Houjun Sun

doi:10.1109/CSRSWTC71154.2026.11669479

Design of Miniaturized Broadband Quadrature Couplers Using Silicon-Based 3-D Integration Process

Yining Wang^*
, Qingyuan Wang
, Huanyao Liu
, Bo Li
, Feng Lin
, Houjun Sun

^*Corresponding author for this work

Beijing Institute of Technology

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

Abstract

This paper presents a miniaturized broadband quadrature coupler using silicon-based 3-D integration process. The coupler consists of two Lange couplers cascaded with two T-networks. The Lange couplers are used to extend matching bandwidth. T-networks are designed to realize good amplitude and phase imbalance performances. The coupler size is significantly reduced by using the silicon-based 3-D integration process. Within 0.8~1.6 GHz, the simulated maximum insertion loss is 1.3 dB, and the return loss and isolation are better than 21.4 dB and 20.5 dB, respectively. In addition, the amplitude imbalance and phase imbalance are less than 0.37 dB and 4.1°, respectively. Furthermore, the coupler size is 0.030λ₀×0.032λ₀×0.002λ₀, where λ₀ is the free space wavelength at the center frequency.

Original language	English
Title of host publication	CSRSWTC 2026 - 2026 Cross Strait Radio Science and Wireless Technology Conference, Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9798319507570
DOIs	https://doi.org/10.1109/CSRSWTC71154.2026.11669479
Publication status	Published - 2026
Externally published	Yes
Event	2026 Cross Strait Radio Science and Wireless Technology Conference, CSRSWTC 2026 - Harbin, China Duration: 10 Jul 2026 → 12 Jul 2026

Publication series

Name	CSRSWTC 2026 - 2026 Cross Strait Radio Science and Wireless Technology Conference, Proceedings

Conference

Conference	2026 Cross Strait Radio Science and Wireless Technology Conference, CSRSWTC 2026
Country/Territory	China
City	Harbin
Period	10/07/26 → 12/07/26

Keywords

broadband
Lange coupler
miniaturization
silicon-based 3-D integration

Access to Document

10.1109/CSRSWTC71154.2026.11669479

Cite this

Wang, Y., Wang, Q., Liu, H., Li, B., Lin, F., & Sun, H. (2026). Design of Miniaturized Broadband Quadrature Couplers Using Silicon-Based 3-D Integration Process. In CSRSWTC 2026 - 2026 Cross Strait Radio Science and Wireless Technology Conference, Proceedings (CSRSWTC 2026 - 2026 Cross Strait Radio Science and Wireless Technology Conference, Proceedings). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CSRSWTC71154.2026.11669479

Wang, Yining ; Wang, Qingyuan ; Liu, Huanyao et al. / Design of Miniaturized Broadband Quadrature Couplers Using Silicon-Based 3-D Integration Process. CSRSWTC 2026 - 2026 Cross Strait Radio Science and Wireless Technology Conference, Proceedings. Institute of Electrical and Electronics Engineers Inc., 2026. (CSRSWTC 2026 - 2026 Cross Strait Radio Science and Wireless Technology Conference, Proceedings).

@inproceedings{3e3580bb184c4764aafdbb4ddf9960a6,

title = "Design of Miniaturized Broadband Quadrature Couplers Using Silicon-Based 3-D Integration Process",

abstract = "This paper presents a miniaturized broadband quadrature coupler using silicon-based 3-D integration process. The coupler consists of two Lange couplers cascaded with two T-networks. The Lange couplers are used to extend matching bandwidth. T-networks are designed to realize good amplitude and phase imbalance performances. The coupler size is significantly reduced by using the silicon-based 3-D integration process. Within 0.8\textasciitilde{}1.6 GHz, the simulated maximum insertion loss is 1.3 dB, and the return loss and isolation are better than 21.4 dB and 20.5 dB, respectively. In addition, the amplitude imbalance and phase imbalance are less than 0.37 dB and 4.1°, respectively. Furthermore, the coupler size is 0.030λ0{\texttimes}0.032λ0{\texttimes}0.002λ0, where λ0 is the free space wavelength at the center frequency.",

keywords = "broadband, Lange coupler, miniaturization, silicon-based 3-D integration",

author = "Yining Wang and Qingyuan Wang and Huanyao Liu and Bo Li and Feng Lin and Houjun Sun",

note = "Publisher Copyright: {\textcopyright} 2026 IEEE.; 2026 Cross Strait Radio Science and Wireless Technology Conference, CSRSWTC 2026 ; Conference date: 10-07-2026 Through 12-07-2026",

year = "2026",

doi = "10.1109/CSRSWTC71154.2026.11669479",

language = "English",

series = "CSRSWTC 2026 - 2026 Cross Strait Radio Science and Wireless Technology Conference, Proceedings",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

booktitle = "CSRSWTC 2026 - 2026 Cross Strait Radio Science and Wireless Technology Conference, Proceedings",

address = "United States",

}

Wang, Y, Wang, Q, Liu, H, Li, B, Lin, F & Sun, H 2026, Design of Miniaturized Broadband Quadrature Couplers Using Silicon-Based 3-D Integration Process. in CSRSWTC 2026 - 2026 Cross Strait Radio Science and Wireless Technology Conference, Proceedings. CSRSWTC 2026 - 2026 Cross Strait Radio Science and Wireless Technology Conference, Proceedings, Institute of Electrical and Electronics Engineers Inc., 2026 Cross Strait Radio Science and Wireless Technology Conference, CSRSWTC 2026, Harbin, China, 10/07/26. https://doi.org/10.1109/CSRSWTC71154.2026.11669479

Design of Miniaturized Broadband Quadrature Couplers Using Silicon-Based 3-D Integration Process. / Wang, Yining; Wang, Qingyuan; Liu, Huanyao et al.
CSRSWTC 2026 - 2026 Cross Strait Radio Science and Wireless Technology Conference, Proceedings. Institute of Electrical and Electronics Engineers Inc., 2026. (CSRSWTC 2026 - 2026 Cross Strait Radio Science and Wireless Technology Conference, Proceedings).

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

TY - GEN

T1 - Design of Miniaturized Broadband Quadrature Couplers Using Silicon-Based 3-D Integration Process

AU - Wang, Yining

AU - Wang, Qingyuan

AU - Liu, Huanyao

AU - Li, Bo

AU - Lin, Feng

AU - Sun, Houjun

PY - 2026

Y1 - 2026

N2 - This paper presents a miniaturized broadband quadrature coupler using silicon-based 3-D integration process. The coupler consists of two Lange couplers cascaded with two T-networks. The Lange couplers are used to extend matching bandwidth. T-networks are designed to realize good amplitude and phase imbalance performances. The coupler size is significantly reduced by using the silicon-based 3-D integration process. Within 0.8~1.6 GHz, the simulated maximum insertion loss is 1.3 dB, and the return loss and isolation are better than 21.4 dB and 20.5 dB, respectively. In addition, the amplitude imbalance and phase imbalance are less than 0.37 dB and 4.1°, respectively. Furthermore, the coupler size is 0.030λ0×0.032λ0×0.002λ0, where λ0 is the free space wavelength at the center frequency.

AB - This paper presents a miniaturized broadband quadrature coupler using silicon-based 3-D integration process. The coupler consists of two Lange couplers cascaded with two T-networks. The Lange couplers are used to extend matching bandwidth. T-networks are designed to realize good amplitude and phase imbalance performances. The coupler size is significantly reduced by using the silicon-based 3-D integration process. Within 0.8~1.6 GHz, the simulated maximum insertion loss is 1.3 dB, and the return loss and isolation are better than 21.4 dB and 20.5 dB, respectively. In addition, the amplitude imbalance and phase imbalance are less than 0.37 dB and 4.1°, respectively. Furthermore, the coupler size is 0.030λ0×0.032λ0×0.002λ0, where λ0 is the free space wavelength at the center frequency.

KW - broadband

KW - Lange coupler

KW - miniaturization

KW - silicon-based 3-D integration

UR - https://www.scopus.com/pages/publications/105050597984

U2 - 10.1109/CSRSWTC71154.2026.11669479

DO - 10.1109/CSRSWTC71154.2026.11669479

M3 - Conference contribution

AN - SCOPUS:105050597984

T3 - CSRSWTC 2026 - 2026 Cross Strait Radio Science and Wireless Technology Conference, Proceedings

BT - CSRSWTC 2026 - 2026 Cross Strait Radio Science and Wireless Technology Conference, Proceedings

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 2026 Cross Strait Radio Science and Wireless Technology Conference, CSRSWTC 2026

Y2 - 10 July 2026 through 12 July 2026

ER -

Wang Y, Wang Q, Liu H, Li B, Lin F, Sun H. Design of Miniaturized Broadband Quadrature Couplers Using Silicon-Based 3-D Integration Process. In CSRSWTC 2026 - 2026 Cross Strait Radio Science and Wireless Technology Conference, Proceedings. Institute of Electrical and Electronics Engineers Inc. 2026. (CSRSWTC 2026 - 2026 Cross Strait Radio Science and Wireless Technology Conference, Proceedings). doi: 10.1109/CSRSWTC71154.2026.11669479

Design of Miniaturized Broadband Quadrature Couplers Using Silicon-Based 3-D Integration Process

Abstract

Publication series

Conference

Keywords

Access to Document

Other files and links

Fingerprint

Cite this