{"title":"一种16元4波束1GHz-IF 100mhz带宽的40nm CMOS交错比特流数字波束形成器","authors":"Sunmin Jang, J. Jeong, Rundao Lu, M. Flynn","doi":"10.1109/RFIC.2017.7969033","DOIUrl":null,"url":null,"abstract":"This paper introduces a 16 element, 1GHz IF input, digital beamformer (DBF) that generates 4 independent simultaneous beams, with 100MHz bandwidth. Although DBF has several advantages over analog beamforming, including higher accuracy and multiple beam generation, application of on-chip DBF has been limited due to high power consumption and large die area. The proposed architecture addresses these issues by combining efficient Continuous-Time Band-Pass Delta Sigma Modulators (CTBPDSMs) with Interleaved Bit-Stream Processing (IL-BSP). IL-BSP saves 80% power and 80% area compared to a conventional DSP approach. The overall 16 element array has a measured 58.5dB SNDR and a 59.6dB SNR over a 100MHz bandwidth (11.2dB array gain). Thanks to the IL-BSP approach, the measured beam patterns are near ideal.","PeriodicalId":349922,"journal":{"name":"2017 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":"{\"title\":\"A 16-element 4-beam 1GHz-IF 100MHz-bandwidth Interleaved Bit-Stream digital beamformer in 40nm CMOS\",\"authors\":\"Sunmin Jang, J. Jeong, Rundao Lu, M. Flynn\",\"doi\":\"10.1109/RFIC.2017.7969033\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This paper introduces a 16 element, 1GHz IF input, digital beamformer (DBF) that generates 4 independent simultaneous beams, with 100MHz bandwidth. Although DBF has several advantages over analog beamforming, including higher accuracy and multiple beam generation, application of on-chip DBF has been limited due to high power consumption and large die area. The proposed architecture addresses these issues by combining efficient Continuous-Time Band-Pass Delta Sigma Modulators (CTBPDSMs) with Interleaved Bit-Stream Processing (IL-BSP). IL-BSP saves 80% power and 80% area compared to a conventional DSP approach. The overall 16 element array has a measured 58.5dB SNDR and a 59.6dB SNR over a 100MHz bandwidth (11.2dB array gain). Thanks to the IL-BSP approach, the measured beam patterns are near ideal.\",\"PeriodicalId\":349922,\"journal\":{\"name\":\"2017 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)\",\"volume\":\"15 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2017-06-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"5\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2017 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/RFIC.2017.7969033\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2017 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/RFIC.2017.7969033","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A 16-element 4-beam 1GHz-IF 100MHz-bandwidth Interleaved Bit-Stream digital beamformer in 40nm CMOS
This paper introduces a 16 element, 1GHz IF input, digital beamformer (DBF) that generates 4 independent simultaneous beams, with 100MHz bandwidth. Although DBF has several advantages over analog beamforming, including higher accuracy and multiple beam generation, application of on-chip DBF has been limited due to high power consumption and large die area. The proposed architecture addresses these issues by combining efficient Continuous-Time Band-Pass Delta Sigma Modulators (CTBPDSMs) with Interleaved Bit-Stream Processing (IL-BSP). IL-BSP saves 80% power and 80% area compared to a conventional DSP approach. The overall 16 element array has a measured 58.5dB SNDR and a 59.6dB SNR over a 100MHz bandwidth (11.2dB array gain). Thanks to the IL-BSP approach, the measured beam patterns are near ideal.
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