Quang-Kien Trinh, Ngoc-Anh Vu, Hai-Nam Le, Thi-Hong-Tham Tran, T. Hoang, Dinh-Chi Tran, X. Pham
{"title":"A VHF-Band Multichannel Direct Sampling Receiver Implementation Using Under-sampling Technique","authors":"Quang-Kien Trinh, Ngoc-Anh Vu, Hai-Nam Le, Thi-Hong-Tham Tran, T. Hoang, Dinh-Chi Tran, X. Pham","doi":"10.1109/ATC55345.2022.9942998","DOIUrl":null,"url":null,"abstract":"This paper presents the analysis and design of a VHF Direct Sampling RF Receiver (DSR). The under-sampling technique has been adopted in this structure where the high-frequency RF signal is digitalized by a low-speed ADC. This technique allows better selection of the ADC dynamic range. In addition, using a lower sampling rate ADC enables a cost-effective design and energy-saving, as well as simplifies the signal processing in the digital domain. The prototype of the proposed receiver has been implemented on FPGA, a 200 MSPS commercial ADC is used to digitize the RF signal in the 200 MHz to 300 MHz range in Nyquist zone 3 and serves as the key component for the RF frontend. Our experimental results show that the proposed receiver meets the key criteria of the commercial receiver, with a sensitivity smaller than 0.225 µV, 90 dB proximity selectivity, and 100 dB dynamic range.","PeriodicalId":135827,"journal":{"name":"2022 International Conference on Advanced Technologies for Communications (ATC)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2022-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2022 International Conference on Advanced Technologies for Communications (ATC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ATC55345.2022.9942998","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
This paper presents the analysis and design of a VHF Direct Sampling RF Receiver (DSR). The under-sampling technique has been adopted in this structure where the high-frequency RF signal is digitalized by a low-speed ADC. This technique allows better selection of the ADC dynamic range. In addition, using a lower sampling rate ADC enables a cost-effective design and energy-saving, as well as simplifies the signal processing in the digital domain. The prototype of the proposed receiver has been implemented on FPGA, a 200 MSPS commercial ADC is used to digitize the RF signal in the 200 MHz to 300 MHz range in Nyquist zone 3 and serves as the key component for the RF frontend. Our experimental results show that the proposed receiver meets the key criteria of the commercial receiver, with a sensitivity smaller than 0.225 µV, 90 dB proximity selectivity, and 100 dB dynamic range.