A DC-23 GHz Broadband Digital Step Attenuator MMIC Using Capacitive-Inductive Joint Compensation

被引：2

作者：

Li, Zhangyong ^{[1
]}

Zhang, Wei ^{[1
]}

Hao, Dongning ^{[1
]}

Liu, Xiubo ^{[1
]}

Liang, Yu ^{[1
]}

Liu, Yanyan ^{[2
]}

机构：

[1] Tianjin Univ, Sch Microelect, Tianjin 300072, Peoples R China

[2] Nankai Univ, Tianjin Key Lab Photoelect Thin Film Devices & Tec, Tianjin 300071, Peoples R China

来源：

IEEE MICROWAVE AND WIRELESS TECHNOLOGY LETTERS | 2024年 / 34卷 / 03期

关键词：

Attenuation; Bandwidth; Attenuators; Gallium arsenide; Capacitors; Broadband communication; Switches; Broadband; capacitive-inductive joint compensation; digital step attenuator (DSA); GaAs pHEMT;

D O I：

10.1109/LMWT.2023.3339812

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This letter presents a broadband, low insert loss (IL) 6-bit switch-type digital step attenuator (DSA) implemented in a 0.25-mu m GaAs pHEMT process. The pi-type attenuation units adopt the proposed capacitive-inductive joint compensation technique, in which the inductor demonstrates an effective zero-pole adjustment to broaden the bandwidth. This DSA maintains a 31.5 dB attenuation range with a 0.5 dB step. Measured results indicate that the root-mean-square (rms) amplitude error is below 0.35 dB and the rms phase error is less than 5 degrees from dc to 23 GHz. The IL is 4.0-6.2 dB. The core area excluding pads is only 0.47 mm2. To the best of our knowledge, this attenuator achieves the widest operating bandwidth among the switch-type GaAs DSAs.

引用

页码：291 / 294

页数：4

共 4 条

[1] Ultra broadband DC to 40 GHz 5-bit pHEMT MMIC digital attenuator
Ju, Inkwon
Noh, Youn-Sub
Yom, In-Bok
35TH EUROPEAN MICROWAVE CONFERENCE, VOLS 1-3, CONFERENCE PROCEEDINGS, 2005, : 995 - 998
[2] A DC-40GHz Switched-Type Attenuator with Combined Capacitive-Inductive Compensation Achieving RMS Amplitude/Phase Errors of <0.23dB/1.3°
Wang, Xinyu
Zhang, Qingzhe
Wang, Keping
2024 IEEE MTT-S INTERNATIONAL WIRELESS SYMPOSIUM, IWS 2024, 2024,
[3] A high linearity 0.05-7?GHz digital step attenuator with the capacitive compensation for bonding wires parasitic parameters
Fu, Haipeng
Tao, Jiqing
Hu, Jianquan
Wang, Keping
Ma, Kaixue
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, 2024, 66 (01)
[4] A 10 MHz-6 GHz High Power High Linearity 35 dB Digital Step Attenuator MMIC Using GaN HEMTs with TaON Passivation
Tsushima, Takahiro
Takeuchi, Hiroaki
Kimishima, Masayuki
2015 IEEE INTERNATIONAL SYMPOSIUM ON RADIO-FREQUENCY INTEGRATION TECHNOLOGY (RFIT), 2015, : 247 - 249

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