{"title":"晶体管调谐器中的交叉调制","authors":"C. D. Simmons, J. Specialny","doi":"10.1109/TBTR2.1962.4503246","DOIUrl":null,"url":null,"abstract":"This report compares the cross modulation of transistors and tubes in a HF tuner. The results substantiate the theory developed by several authors and indicate that transistors are about 1 1/2 to 2 times worse than tubes. However, it is shown that by using small degenerative emitter resistors, the transistor can be made as good as the best tubes. In fact, by using a 56 ohm unbypassed emitter resistor and forward AGC the cross modulation of a T-2028 MADT is equal or better than the best tube tuners over the entire AGC range.","PeriodicalId":136909,"journal":{"name":"Ire Transactions on Broadcast and Television Receivers","volume":"25 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1962-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":"{\"title\":\"Cross Modulation in Transistor Tuners\",\"authors\":\"C. D. Simmons, J. Specialny\",\"doi\":\"10.1109/TBTR2.1962.4503246\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This report compares the cross modulation of transistors and tubes in a HF tuner. The results substantiate the theory developed by several authors and indicate that transistors are about 1 1/2 to 2 times worse than tubes. However, it is shown that by using small degenerative emitter resistors, the transistor can be made as good as the best tubes. In fact, by using a 56 ohm unbypassed emitter resistor and forward AGC the cross modulation of a T-2028 MADT is equal or better than the best tube tuners over the entire AGC range.\",\"PeriodicalId\":136909,\"journal\":{\"name\":\"Ire Transactions on Broadcast and Television Receivers\",\"volume\":\"25 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1962-11-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"5\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Ire Transactions on Broadcast and Television Receivers\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/TBTR2.1962.4503246\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ire Transactions on Broadcast and Television Receivers","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/TBTR2.1962.4503246","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
This report compares the cross modulation of transistors and tubes in a HF tuner. The results substantiate the theory developed by several authors and indicate that transistors are about 1 1/2 to 2 times worse than tubes. However, it is shown that by using small degenerative emitter resistors, the transistor can be made as good as the best tubes. In fact, by using a 56 ohm unbypassed emitter resistor and forward AGC the cross modulation of a T-2028 MADT is equal or better than the best tube tuners over the entire AGC range.
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