{"title":"A DC-6 GHz 7-Bit Digital Attenuator with Low Insertion Loss","authors":"H. Xiao, Jianquan Hu, Kaixue Ma","doi":"10.1109/ICET51757.2021.9451143","DOIUrl":null,"url":null,"abstract":"This paper presents a dc to 6-GHz 7-bit digital attenuator with low insertion loss fabricated using E/D-mode GaAs pseudomorphic high electron-mobility transistor (pHEMT) process. By using the simplified T-attenuator to reduce the number of switch transistors, the designed digital attenuator achieves low insertion loss. Measurement results indicate that the designed digital attenuator achieves a 31.75-dB attenuation range with 0.25-dB resolution, smaller than 2.3-dB insertion loss, and less than 0.4-dB RMS attenuation error with better than -10-dB input/output return loss in the frequency range from dc to 6-GHz. Meanwhile, the designed digital attenuator has a compact chip area of 2.35-mm × 0.9-mm ×0.1-mm.","PeriodicalId":316980,"journal":{"name":"2021 IEEE 4th International Conference on Electronics Technology (ICET)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2021-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2021 IEEE 4th International Conference on Electronics Technology (ICET)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICET51757.2021.9451143","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
This paper presents a dc to 6-GHz 7-bit digital attenuator with low insertion loss fabricated using E/D-mode GaAs pseudomorphic high electron-mobility transistor (pHEMT) process. By using the simplified T-attenuator to reduce the number of switch transistors, the designed digital attenuator achieves low insertion loss. Measurement results indicate that the designed digital attenuator achieves a 31.75-dB attenuation range with 0.25-dB resolution, smaller than 2.3-dB insertion loss, and less than 0.4-dB RMS attenuation error with better than -10-dB input/output return loss in the frequency range from dc to 6-GHz. Meanwhile, the designed digital attenuator has a compact chip area of 2.35-mm × 0.9-mm ×0.1-mm.
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