{"title":"采用4电平差分谐振隧道量化器的10ghz δ - σ调制器设计","authors":"K. Eguchi, Masaru Chibashi, T. Waho","doi":"10.1109/ISMVL.2005.2","DOIUrl":null,"url":null,"abstract":"An ultrahigh-speed continuous-time delta-sigma modulator using a 4-level resonant-tunneling quantizer has been investigated. The quantizer consists of four resonant-tunneling diodes (RTDs) and a source-coupled high-electron-mobility transistor (HEMT) pair, and operates in the fully-differential mode. Circuit simulation shows that the present first-order delta-sigma modulator has a signal-to-noise ratio (SNR) of 49.4 dB at a sampling frequency of 10 GHz and an input bandwidth of 100 MHz. An improvement in the SNR by 5.6 dB is obtained by increasing the number of quantization level from two to four.","PeriodicalId":340578,"journal":{"name":"35th International Symposium on Multiple-Valued Logic (ISMVL'05)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2005-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"13","resultStr":"{\"title\":\"A design of 10-GHz delta-sigma modulator using a 4-level differential resonant-tunneling quantizer\",\"authors\":\"K. Eguchi, Masaru Chibashi, T. Waho\",\"doi\":\"10.1109/ISMVL.2005.2\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"An ultrahigh-speed continuous-time delta-sigma modulator using a 4-level resonant-tunneling quantizer has been investigated. The quantizer consists of four resonant-tunneling diodes (RTDs) and a source-coupled high-electron-mobility transistor (HEMT) pair, and operates in the fully-differential mode. Circuit simulation shows that the present first-order delta-sigma modulator has a signal-to-noise ratio (SNR) of 49.4 dB at a sampling frequency of 10 GHz and an input bandwidth of 100 MHz. An improvement in the SNR by 5.6 dB is obtained by increasing the number of quantization level from two to four.\",\"PeriodicalId\":340578,\"journal\":{\"name\":\"35th International Symposium on Multiple-Valued Logic (ISMVL'05)\",\"volume\":\"22 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2005-05-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"13\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"35th International Symposium on Multiple-Valued Logic (ISMVL'05)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ISMVL.2005.2\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"35th International Symposium on Multiple-Valued Logic (ISMVL'05)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISMVL.2005.2","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A design of 10-GHz delta-sigma modulator using a 4-level differential resonant-tunneling quantizer
An ultrahigh-speed continuous-time delta-sigma modulator using a 4-level resonant-tunneling quantizer has been investigated. The quantizer consists of four resonant-tunneling diodes (RTDs) and a source-coupled high-electron-mobility transistor (HEMT) pair, and operates in the fully-differential mode. Circuit simulation shows that the present first-order delta-sigma modulator has a signal-to-noise ratio (SNR) of 49.4 dB at a sampling frequency of 10 GHz and an input bandwidth of 100 MHz. An improvement in the SNR by 5.6 dB is obtained by increasing the number of quantization level from two to four.
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