标签: varactor

摘要：DS1851是一个双8位数字-模拟转换器（DAC），其中还包含双独立40字节的查找表（LUT）和内部数字温度传感器。其原始应用程序的激光器（VCSEL）驱动程序中使用的偏置电路的温度补偿。此应用程序的简要介绍了如何使用该A/D转换器提供温度补偿的同一类型的变容二极管，RF电路中常用的可变电容器。ApplicationNote1964DS1851:VaractorTemperatureCompensationwww.maxim-ic.comVaractorCharacteristicsVaractorsarediodesthatexhibitlargechangesincapacitancewhenthereversebiasisvaried.Thecapacitanceofavaractordecreasesasthereversebiasisincreased.Acapacitancechangeratioofgreaterthan5isnotuncommon.SeeFigure1foratypicalvaractorvoltage-capacitancecharacteristic.Figure1.TypicalVaractorVoltage-CapacitanceCharacteristic18.016.0……

HFVaractorOscillatorDesignOCTAVETUNING,HIGHFREQUENCYVARACTOROSCILLATORDESIGNbyJASONBREITBARTHB.S.ElectricalEngineering,OregonStateUniversity,1997AthesissubmittedtotheFacultyoftheGraduateSchooloftheUniversityofColoradoinpartialfulllmentoftherequirementsforthedegreeofMasterofScienceDepartmentofElectricalandComputerEngineering2001Thisthesisentitled:OctaveTuning,HighFrequencyVaractorOscillatorDesignwrittenbyJasonBreitbarthhasbeenapprovedfortheDepartmentofElectricalandComputerEngineeringZoyaPopovicDraganMaksimovicDateThenalcopyofthisthesishasbeenexaminedbythesignatories;andwendthatboththecontentandtheformmeetacceptablepresentationstandardsofscholarlyworkintheabovementioneddisciplineiiiBreitbart……