{"title":"用于相控阵天线的GaAs mesfet光纤照明","authors":"L. A. Campos, E. E. Ames","doi":"10.1109/BAODS.1990.205512","DOIUrl":null,"url":null,"abstract":"Experimental and theoretical results are reported for fiber-optic links using MESFETs as light detectors for application in monolithic microwave integrated circuit (MMIC)-based phased-array antennas. Since MESFETs are compatible with MMICs, it is easy to implement a MESFET receiver in MMIC transmit-and-receive (T/R) modules. A receiver design using MESFET detection is less complicated and occupies less area than a PINFET receiver. The use of single-mode (SM) and multimode graded-index (MMGI) fiber to illuminate microwave devices is examined. The keys to this investigation are the high responsivity (R) values obtained by illuminating MESFETS with fibers (R/sub SM/=1.87 mA/mW; R/sub MMGI/=1.18 mA/mW) and the phase coherency demonstration of MESFET fiber-optic links at microwave frequencies using an antenna array and measuring its radiation pattern RF link loss improvements of 9 to 13 dB with respect to links using p-i-n photodiodes were measured.<<ETX>>","PeriodicalId":119716,"journal":{"name":"LEOS Summer Topical on Broadband Analog Optoelectronics: Devices and Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1990-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Fibre-optic illumination of GaAs MESFETs for use in phased-array antennas\",\"authors\":\"L. A. Campos, E. E. Ames\",\"doi\":\"10.1109/BAODS.1990.205512\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Experimental and theoretical results are reported for fiber-optic links using MESFETs as light detectors for application in monolithic microwave integrated circuit (MMIC)-based phased-array antennas. Since MESFETs are compatible with MMICs, it is easy to implement a MESFET receiver in MMIC transmit-and-receive (T/R) modules. A receiver design using MESFET detection is less complicated and occupies less area than a PINFET receiver. The use of single-mode (SM) and multimode graded-index (MMGI) fiber to illuminate microwave devices is examined. The keys to this investigation are the high responsivity (R) values obtained by illuminating MESFETS with fibers (R/sub SM/=1.87 mA/mW; R/sub MMGI/=1.18 mA/mW) and the phase coherency demonstration of MESFET fiber-optic links at microwave frequencies using an antenna array and measuring its radiation pattern RF link loss improvements of 9 to 13 dB with respect to links using p-i-n photodiodes were measured.<<ETX>>\",\"PeriodicalId\":119716,\"journal\":{\"name\":\"LEOS Summer Topical on Broadband Analog Optoelectronics: Devices and Systems\",\"volume\":\"1 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1990-07-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"LEOS Summer Topical on Broadband Analog Optoelectronics: Devices and Systems\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/BAODS.1990.205512\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"LEOS Summer Topical on Broadband Analog Optoelectronics: Devices and Systems","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/BAODS.1990.205512","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Fibre-optic illumination of GaAs MESFETs for use in phased-array antennas
Experimental and theoretical results are reported for fiber-optic links using MESFETs as light detectors for application in monolithic microwave integrated circuit (MMIC)-based phased-array antennas. Since MESFETs are compatible with MMICs, it is easy to implement a MESFET receiver in MMIC transmit-and-receive (T/R) modules. A receiver design using MESFET detection is less complicated and occupies less area than a PINFET receiver. The use of single-mode (SM) and multimode graded-index (MMGI) fiber to illuminate microwave devices is examined. The keys to this investigation are the high responsivity (R) values obtained by illuminating MESFETS with fibers (R/sub SM/=1.87 mA/mW; R/sub MMGI/=1.18 mA/mW) and the phase coherency demonstration of MESFET fiber-optic links at microwave frequencies using an antenna array and measuring its radiation pattern RF link loss improvements of 9 to 13 dB with respect to links using p-i-n photodiodes were measured.<>
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