{"title":"A low out-of-band noise LTE transmitter with current-mode approach","authors":"Nicola Codega, A. Liscidini, R. Castello","doi":"10.1109/ESSCIRC.2013.6649128","DOIUrl":null,"url":null,"abstract":"A 55nm CMOS current-mode transmitter for multistandard wireless communications (including LTE) that requires only 1.5mm2 (with 4 output ports) is presented. The circuit is made up of two portions: a class A/B up-converter and a baseband that includes DAC, VGA, low-pass filter (two Biquad plus a passive first order) and class A/B signal conditioner. Combining a third order filter with the class A/B conditioner results in a reduction of both current consumption and RX-band noise injection. For LTE10, the consumption is 96mW and 34mW at 4dBm and at -10dBm output power, respectively. The complete transmitter gives -158dBc/Hz RX-band noise injection at 30MHz offset.","PeriodicalId":183620,"journal":{"name":"2013 Proceedings of the ESSCIRC (ESSCIRC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2013-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2013 Proceedings of the ESSCIRC (ESSCIRC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ESSCIRC.2013.6649128","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 55nm CMOS current-mode transmitter for multistandard wireless communications (including LTE) that requires only 1.5mm2 (with 4 output ports) is presented. The circuit is made up of two portions: a class A/B up-converter and a baseband that includes DAC, VGA, low-pass filter (two Biquad plus a passive first order) and class A/B signal conditioner. Combining a third order filter with the class A/B conditioner results in a reduction of both current consumption and RX-band noise injection. For LTE10, the consumption is 96mW and 34mW at 4dBm and at -10dBm output power, respectively. The complete transmitter gives -158dBc/Hz RX-band noise injection at 30MHz offset.
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