{"title":"A 6-30 GHz Compact 3-bit Digital Attenuator MMIC using InP/InGaAs PIN Diodes","authors":"Hyunchul Eom, Sejun Han, Kyounghoon Yang","doi":"10.1109/GSMM.2008.4534569","DOIUrl":null,"url":null,"abstract":"A broadband (6-30 GHz) 3-bit digital attenuator MMIC using InP/InGaAs PIN Diodes has been proposed and fabricated. The proposed digital attenuator is composed of Pi- resistive networks for non-reflective step attenuation and fabricated by using a benzocyclobutene(BCB)-based multi-layer MMIC technology. By using the InP/InGaAs PIN diodes having a high cutoff frequency for digital switching, the proposed digital attenuator has shown the low insertion loss and excellent return loss characteristics. The 3-bit digital attenuator has a 3 dB attenuation step and a 21 dB attenuation range. The minimum insertion loss is 4 dB and the input/output return loss is greater than 10 dB over all attenuation states and frequencies. The chip size is 1.47times0.99 mm2.","PeriodicalId":304483,"journal":{"name":"2008 Global Symposium on Millimeter Waves","volume":"76 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2008 Global Symposium on Millimeter Waves","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/GSMM.2008.4534569","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
Abstract
A broadband (6-30 GHz) 3-bit digital attenuator MMIC using InP/InGaAs PIN Diodes has been proposed and fabricated. The proposed digital attenuator is composed of Pi- resistive networks for non-reflective step attenuation and fabricated by using a benzocyclobutene(BCB)-based multi-layer MMIC technology. By using the InP/InGaAs PIN diodes having a high cutoff frequency for digital switching, the proposed digital attenuator has shown the low insertion loss and excellent return loss characteristics. The 3-bit digital attenuator has a 3 dB attenuation step and a 21 dB attenuation range. The minimum insertion loss is 4 dB and the input/output return loss is greater than 10 dB over all attenuation states and frequencies. The chip size is 1.47times0.99 mm2.
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