超宽带锥形电感特性研究

锥形螺旋电感是一种新型电感，在较宽的频带内有良好的一致性，在毫米波电路和光载无线通信系统（RoF Radio-over-Fiber）中有广泛的应用.本文对锥形螺旋电感感值、螺旋电感长度、直流电阻的计算方法进行了研究，给出了精确计算方法，其中，电感值误差在10.2%以内，直流电阻误差在6.5%以内；对锥形空心螺旋电感微波特性进行研究，提出了一种等效模型，该模型拟合计算结果与实测曲线有较好的一致性，使用该模型给出了螺旋电感宽带特性的详细理论推导，同时利用该模型首次对锥形螺旋电感的宽带特性进行了直观解释；最后，将绕制参数对电感微波性能的影响进行分析，引入单位长度电感量参数α和电感量-频率参数β，可对超宽带锥形电感微波特性进行优化，对某些特性进行快速优化.

Research on Broad-Bandwidth Conical Shape Inductors

Conical spiral inductor is a new type of inductor with good consistency over a wide frequency band.It is widely used in bias junction circuits,amplifier circuits,and RoF (Radio-over-Fiber) systems.In this paper,the calculation method of the inductance value of spiral conical inductor,the length of spiral inductor and the DC resistance are studied,and the exact calculation formula is given.The sensitivity error is less than 10.2%,and the DC resistance error is less than 6.5%.At the same time,the microwave characteristic of the conical hollow spiral inductor is studied,and an equivalent model is put forward.The model is in good agreement with the measured curve.The influence of the winding parameters on the inductance is analyzed,and the parameter α of the length-inductance and the inductance-frequency parameter β are introduced to optimize the characteristics of the ultra-wideband conical inductor.