{"title":"A low loss high performance filter structure","authors":"P. Dufilié, J. Hode, J. Desbois","doi":"10.1109/ULTSYM.1988.49355","DOIUrl":null,"url":null,"abstract":"An improved structure for low loss, sharp cutoff, high-rejection filters has been developed. Center frequencies as high as 1500 MHz can be realized with standard optical processing techniques. Relative bandwidths of up to 0.67 K/sup 2/ are achievable. Data are presented for 900-MHz filters on 128 degrees YX-LiNbOI/sub 3/ and 950-MHz filters on 36 degrees YX-LiTaO/sub 3/ each having 3% and 1.6% relative bandwidths. 50-dB out-of-band rejection, and <6-dB insertion loss. By simple scaling of the designs to a 0.65- mu m minimum linewidth, a center frequency of 1.4 GHz can be achieved on LiNbO/sub 3/ and 1.5 GHz on LiTaO/sub 3/.<<ETX>>","PeriodicalId":263198,"journal":{"name":"IEEE 1988 Ultrasonics Symposium Proceedings.","volume":"81 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1988-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"14","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE 1988 Ultrasonics Symposium Proceedings.","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ULTSYM.1988.49355","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 14
Abstract
An improved structure for low loss, sharp cutoff, high-rejection filters has been developed. Center frequencies as high as 1500 MHz can be realized with standard optical processing techniques. Relative bandwidths of up to 0.67 K/sup 2/ are achievable. Data are presented for 900-MHz filters on 128 degrees YX-LiNbOI/sub 3/ and 950-MHz filters on 36 degrees YX-LiTaO/sub 3/ each having 3% and 1.6% relative bandwidths. 50-dB out-of-band rejection, and <6-dB insertion loss. By simple scaling of the designs to a 0.65- mu m minimum linewidth, a center frequency of 1.4 GHz can be achieved on LiNbO/sub 3/ and 1.5 GHz on LiTaO/sub 3/.<>
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