{"title":"用于多路dac子系统的250nm InP HBT技术的dc -89 ghz amux IQ调制器","authors":"Munehiko Nagatani;Hitoshi Wakita;Teruo Jyo;Yuta Shiratori;Miwa Mutoh;Akira Kawai;Masanori Nakamura;Fukutaro Hamaoka;Hiroshi Yamazaki;Takayuki Kobayashi;Yutaka Miyamoto;Hiroyuki Takahashi","doi":"10.1109/LMWT.2025.3552690","DOIUrl":null,"url":null,"abstract":"This article presents an ultra broadband in-phase and quadrature (IQ) modulator in 250-nm InP heterojunction bipolar transistor (HBT) technology for a multiplexing-digital-to-analog converter (DAC) subsystem enabling high-symbol-rate baseband signal generation in optical communications. The IQ modulator consists of two analog multiplexers (AMUXs), data/clock buffers, a quadrature filter, a linear adder, and an output buffer. The fabricated AMUX-based IQ modulator integrated circuit (IC) has a bandwidth of 98 GHz ranging from direct current (DC) and consumes a total power of 880 mW with a supply voltage of −4.0 V. The packaged IQ modulator module with coaxial connectors maintains a bandwidth of 89 GHz. Using the multiplexing-DAC subsystem based on this module, high-symbol-rate baseband signal generations and optical modulations up to 168-GBaud 16-ary quadrature amplitude modulation (16QAM) were successfully demonstrated. To the best of our knowledge, this is the broadest bandwidth IQ modulator reported to date.","PeriodicalId":73297,"journal":{"name":"IEEE microwave and wireless technology letters","volume":"35 6","pages":"868-871"},"PeriodicalIF":3.4000,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"DC-to-89-GHz AMUX-Based IQ Modulator in 250-nm InP HBT Technology for Multiplexing-DAC Subsystem\",\"authors\":\"Munehiko Nagatani;Hitoshi Wakita;Teruo Jyo;Yuta Shiratori;Miwa Mutoh;Akira Kawai;Masanori Nakamura;Fukutaro Hamaoka;Hiroshi Yamazaki;Takayuki Kobayashi;Yutaka Miyamoto;Hiroyuki Takahashi\",\"doi\":\"10.1109/LMWT.2025.3552690\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This article presents an ultra broadband in-phase and quadrature (IQ) modulator in 250-nm InP heterojunction bipolar transistor (HBT) technology for a multiplexing-digital-to-analog converter (DAC) subsystem enabling high-symbol-rate baseband signal generation in optical communications. The IQ modulator consists of two analog multiplexers (AMUXs), data/clock buffers, a quadrature filter, a linear adder, and an output buffer. The fabricated AMUX-based IQ modulator integrated circuit (IC) has a bandwidth of 98 GHz ranging from direct current (DC) and consumes a total power of 880 mW with a supply voltage of −4.0 V. The packaged IQ modulator module with coaxial connectors maintains a bandwidth of 89 GHz. Using the multiplexing-DAC subsystem based on this module, high-symbol-rate baseband signal generations and optical modulations up to 168-GBaud 16-ary quadrature amplitude modulation (16QAM) were successfully demonstrated. To the best of our knowledge, this is the broadest bandwidth IQ modulator reported to date.\",\"PeriodicalId\":73297,\"journal\":{\"name\":\"IEEE microwave and wireless technology letters\",\"volume\":\"35 6\",\"pages\":\"868-871\"},\"PeriodicalIF\":3.4000,\"publicationDate\":\"2025-04-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"IEEE microwave and wireless technology letters\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://ieeexplore.ieee.org/document/10947165/\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"0\",\"JCRName\":\"ENGINEERING, ELECTRICAL & ELECTRONIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE microwave and wireless technology letters","FirstCategoryId":"1085","ListUrlMain":"https://ieeexplore.ieee.org/document/10947165/","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"0","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
DC-to-89-GHz AMUX-Based IQ Modulator in 250-nm InP HBT Technology for Multiplexing-DAC Subsystem
This article presents an ultra broadband in-phase and quadrature (IQ) modulator in 250-nm InP heterojunction bipolar transistor (HBT) technology for a multiplexing-digital-to-analog converter (DAC) subsystem enabling high-symbol-rate baseband signal generation in optical communications. The IQ modulator consists of two analog multiplexers (AMUXs), data/clock buffers, a quadrature filter, a linear adder, and an output buffer. The fabricated AMUX-based IQ modulator integrated circuit (IC) has a bandwidth of 98 GHz ranging from direct current (DC) and consumes a total power of 880 mW with a supply voltage of −4.0 V. The packaged IQ modulator module with coaxial connectors maintains a bandwidth of 89 GHz. Using the multiplexing-DAC subsystem based on this module, high-symbol-rate baseband signal generations and optical modulations up to 168-GBaud 16-ary quadrature amplitude modulation (16QAM) were successfully demonstrated. To the best of our knowledge, this is the broadest bandwidth IQ modulator reported to date.
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