{"title":"Implementation of RF narrow band frequency synthesizer for LoRaWAN system","authors":"Dong-Shik Kim, Won‐Sang Yoon, S. Chai","doi":"10.1109/ISOCC.2017.8368868","DOIUrl":null,"url":null,"abstract":"A narrowband frequency synthesizer has been designed and fabricated to generate two bands of 868MHz(Europe) and 915MHz(North America) with a same chip. It will be applied as the LoRaWAN system. Measurement results show that the frequency synthesizer has bandwidth of 1,670 ∼ 1,972MHz(about 16.57% center frequency ratio), and low phase noise characteristics of −83.74dBc/Hz at 50μA charge pump output current and −86.81dBc/Hz at 300μA charge pump output current on 100KHz offset.","PeriodicalId":248826,"journal":{"name":"2017 International SoC Design Conference (ISOCC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2017 International SoC Design Conference (ISOCC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISOCC.2017.8368868","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
A narrowband frequency synthesizer has been designed and fabricated to generate two bands of 868MHz(Europe) and 915MHz(North America) with a same chip. It will be applied as the LoRaWAN system. Measurement results show that the frequency synthesizer has bandwidth of 1,670 ∼ 1,972MHz(about 16.57% center frequency ratio), and low phase noise characteristics of −83.74dBc/Hz at 50μA charge pump output current and −86.81dBc/Hz at 300μA charge pump output current on 100KHz offset.
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