{"title":"用于802.11b/蓝牙接收器的双模低通滤波器","authors":"A. Mohieldin, E. Sánchez-Sinencio","doi":"10.1109/ESSCIR.2004.1356708","DOIUrl":null,"url":null,"abstract":"The design of a dual-mode low-pass channel selection filter for a dual-standard 802.11b/Bluetooth direct conversion receiver is presented. The filter is an OTA-C, 5/sup th/ order, Butterworth low pass structure. The OTA is implemented as a source-degenerated bipolar differential pair. Dual-mode operation, 600 kHz cut-off frequency for Bluetooth mode and 6 MHz for Wi-Fi mode, is achieved by switching the source-degeneration resistors and the capacitors. The filter operates from a single 2.5 V supply while consuming 2.7 mA and 0.9 mA for 802.11b and Bluetooth, respectively. It achieves 10 dBm in-band IIP3, 40 dBm out-of-band IIIP3 for both modes. The measured input referred noise density is -148.92 dBV/Hz and -140.48 dBV/Hz for 802.11b and Bluetooth, respectively.","PeriodicalId":294077,"journal":{"name":"Proceedings of the 30th European Solid-State Circuits Conference","volume":"11 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2004-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"11","resultStr":"{\"title\":\"A dual-mode low-pass filter for 802.11b/Bluetooth receiver\",\"authors\":\"A. Mohieldin, E. Sánchez-Sinencio\",\"doi\":\"10.1109/ESSCIR.2004.1356708\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The design of a dual-mode low-pass channel selection filter for a dual-standard 802.11b/Bluetooth direct conversion receiver is presented. The filter is an OTA-C, 5/sup th/ order, Butterworth low pass structure. The OTA is implemented as a source-degenerated bipolar differential pair. Dual-mode operation, 600 kHz cut-off frequency for Bluetooth mode and 6 MHz for Wi-Fi mode, is achieved by switching the source-degeneration resistors and the capacitors. The filter operates from a single 2.5 V supply while consuming 2.7 mA and 0.9 mA for 802.11b and Bluetooth, respectively. It achieves 10 dBm in-band IIP3, 40 dBm out-of-band IIIP3 for both modes. The measured input referred noise density is -148.92 dBV/Hz and -140.48 dBV/Hz for 802.11b and Bluetooth, respectively.\",\"PeriodicalId\":294077,\"journal\":{\"name\":\"Proceedings of the 30th European Solid-State Circuits Conference\",\"volume\":\"11 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2004-11-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"11\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Proceedings of the 30th European Solid-State Circuits Conference\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ESSCIR.2004.1356708\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the 30th European Solid-State Circuits Conference","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ESSCIR.2004.1356708","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A dual-mode low-pass filter for 802.11b/Bluetooth receiver
The design of a dual-mode low-pass channel selection filter for a dual-standard 802.11b/Bluetooth direct conversion receiver is presented. The filter is an OTA-C, 5/sup th/ order, Butterworth low pass structure. The OTA is implemented as a source-degenerated bipolar differential pair. Dual-mode operation, 600 kHz cut-off frequency for Bluetooth mode and 6 MHz for Wi-Fi mode, is achieved by switching the source-degeneration resistors and the capacitors. The filter operates from a single 2.5 V supply while consuming 2.7 mA and 0.9 mA for 802.11b and Bluetooth, respectively. It achieves 10 dBm in-band IIP3, 40 dBm out-of-band IIIP3 for both modes. The measured input referred noise density is -148.92 dBV/Hz and -140.48 dBV/Hz for 802.11b and Bluetooth, respectively.
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