变容二极管背靠背拓扑结构的性能分析  

Performance Analysis of Varactors with Back-to-back Topology

作　　者：刘明鑫[1] 房梦旭 唐斌[1] 冯文英 

机构地区：[1]成都航空职业技术学院继续教育学院,四川成都610100 [2]四川省金核环保工程有限公司,四川成都610015

出　　处：《电子科技》2016年第3期137-139,144,共4页Electronic Science and Technology

基　　金：中国博士后科学基金面上资助项目(2012M511919)

摘　　要：针对变容二极管在实际应用电路中,由于非线性所造成的寄生调制、频率抖动、频率失真、AM to PM噪声引入等问题,文中采用变容二极管背靠背拓扑结构(BBS),通过改善压控线性度来降低电路RF调制、频率抖动、相位噪声等影响,既能抑制非线性导致的寄生调制现象,又简化了调节电压。为目前广泛应用变容管作为电调元件的电路提供了参考。In view of the parasitic modulation,frequency jitter,frequency distortion,AM to PM noise,etc.caused by the varactor nonlinearity in the actual application circuit,this paper uses back-to-back topology（ BBS）varactors to improves the voltage-controlled linearity and to reduce the RF modulation frequency jitter and phase noise of the circuit. It parasitic modulation caused by the varactor nonlinearity is restrained with simpler voltage regulation.The study has important reference value to the circuits that widely use varactors as the electrically tunable components.

关 键 词：变容二极管 背靠背拓扑 VCO 电调滤波器 调频电路 

分 类 号：TN312.1[电子电信—物理电子学]