{"title":"Design and realization of continuous-time wave digital filters","authors":"D. Bruckmann","doi":"10.1109/ISCAS.2008.4542064","DOIUrl":null,"url":null,"abstract":"Digital signal processing in continuous-time can result in a number of advantages compared to classical sampled data systems, while the inherent advantages of digital implementations with respect to programmability and noise immunity are retained. It turned out however that a critical point of these systems is the implementation of the continuous- time delays, requiring a considerably larger chip area than the delays in sampled data systems. Thus structures with a minimum number of delay elements seem to be advantageous. In this contribution the implementation of continuous-time wave digital filters (WDFs) is considered. This filter type is well- known for its superior properties with respect to stability and sensitivity. Furthermore, by selecting a proper reference structure, WDFs can be implemented with a minimum number of delay elements for a given filter specification thus making them very attractive for continuous-time implementations. Due to the proposed concept a number of advantages are obtained and a very efficient realization in VLSI-technology becomes feasible.","PeriodicalId":91083,"journal":{"name":"IEEE International Symposium on Circuits and Systems proceedings. IEEE International Symposium on Circuits and Systems","volume":"23 1","pages":"2901-2904"},"PeriodicalIF":0.0000,"publicationDate":"2008-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"8","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE International Symposium on Circuits and Systems proceedings. IEEE International Symposium on Circuits and Systems","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISCAS.2008.4542064","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 8
Abstract
Digital signal processing in continuous-time can result in a number of advantages compared to classical sampled data systems, while the inherent advantages of digital implementations with respect to programmability and noise immunity are retained. It turned out however that a critical point of these systems is the implementation of the continuous- time delays, requiring a considerably larger chip area than the delays in sampled data systems. Thus structures with a minimum number of delay elements seem to be advantageous. In this contribution the implementation of continuous-time wave digital filters (WDFs) is considered. This filter type is well- known for its superior properties with respect to stability and sensitivity. Furthermore, by selecting a proper reference structure, WDFs can be implemented with a minimum number of delay elements for a given filter specification thus making them very attractive for continuous-time implementations. Due to the proposed concept a number of advantages are obtained and a very efficient realization in VLSI-technology becomes feasible.