{"title":"用于高可靠性应用的真空密封OCXO的设计考虑","authors":"R. Clark, A. Scalpi","doi":"10.1109/FREQ.1996.559898","DOIUrl":null,"url":null,"abstract":"It is well known that the use of a vacuum sealed enclosure which contains the crystal and oscillator circuitry can be of significant value in enhancing the performance of OCXO's. This paper reports on the design of a new vacuum sealed OCXO termed the EMXO having the design objectives of (1) a design which allows for the use of several different crystal enclosures, including the standard TO-8, (2) a parts count reduction of approximately 50% over previous designs and (3) a provision to utilize high reliability components such as class \"S\" on ceramic construction. The resulting oven thermal resistance measured approximately 180/spl deg/C/W thereby yielding a steady state power dissipation of less than 1 W at -55/spl deg/C.","PeriodicalId":140391,"journal":{"name":"Proceedings of 1996 IEEE International Frequency Control Symposium","volume":"1986 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1996-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":"{\"title\":\"Design considerations of vacuum-sealed OCXO's for high reliability applications\",\"authors\":\"R. Clark, A. Scalpi\",\"doi\":\"10.1109/FREQ.1996.559898\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"It is well known that the use of a vacuum sealed enclosure which contains the crystal and oscillator circuitry can be of significant value in enhancing the performance of OCXO's. This paper reports on the design of a new vacuum sealed OCXO termed the EMXO having the design objectives of (1) a design which allows for the use of several different crystal enclosures, including the standard TO-8, (2) a parts count reduction of approximately 50% over previous designs and (3) a provision to utilize high reliability components such as class \\\"S\\\" on ceramic construction. The resulting oven thermal resistance measured approximately 180/spl deg/C/W thereby yielding a steady state power dissipation of less than 1 W at -55/spl deg/C.\",\"PeriodicalId\":140391,\"journal\":{\"name\":\"Proceedings of 1996 IEEE International Frequency Control Symposium\",\"volume\":\"1986 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1996-06-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"4\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Proceedings of 1996 IEEE International Frequency Control Symposium\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/FREQ.1996.559898\",\"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 1996 IEEE International Frequency Control Symposium","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/FREQ.1996.559898","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Design considerations of vacuum-sealed OCXO's for high reliability applications
It is well known that the use of a vacuum sealed enclosure which contains the crystal and oscillator circuitry can be of significant value in enhancing the performance of OCXO's. This paper reports on the design of a new vacuum sealed OCXO termed the EMXO having the design objectives of (1) a design which allows for the use of several different crystal enclosures, including the standard TO-8, (2) a parts count reduction of approximately 50% over previous designs and (3) a provision to utilize high reliability components such as class "S" on ceramic construction. The resulting oven thermal resistance measured approximately 180/spl deg/C/W thereby yielding a steady state power dissipation of less than 1 W at -55/spl deg/C.