三毫米波三倍频器研究

【作者】 卜瑞锋；

【导师】 樊勇；

【作者基本信息】 电子科技大学 ， 电磁场与微波技术， 2002， 硕士

【摘要】 随着现代通信和雷达技术的发展，先进电子系统对毫米波频率源的要求越来越高。简单的毫米波固态源的频率稳定度和相位噪声较差，难以满足要求，因此有必要研究W波段倍频源。 本文首先回顾了毫米波微带传输线的传输特性和不连续性。而后介绍了PN结变容管的特性及变容管倍频器倍频原理，这是研究非线性电抗倍频器的理论基础。非线性电路分析是倍频器设计的关键，只有对器件本身和外围电路有个透彻的了解，准确给出嵌入阻抗，才能对外围电路进行设计，因此本文给出了几种非线性电路分析方法。本文采用微带线作为毫米波集成电路的传输线，运用HP ADS软件进行优化得出微带低通滤波器、带通滤波器、各匹配电路及空闲回路和偏置电路。最后对微带到波导的过渡形式进行了探讨，本文采用了余弦平方函数对极鳍线过渡。采用突变结变容管管芯研制完成的三毫米波微带集成变容管三倍频器，其输出功率为0.12mW，变频效率为0.12％。更多还原

【Abstract】 With the developing of millimeter-wave communication and radar, the demand on millimeter-wave source is more and more strict. And millimeter-wave solid-state oscillators cant meet the demands of some systems. It is necessary to develop W-band multiplier source. Microstrip integrated varactor multipliers at W-band are studied.First of all, the character of the microstrip transmission line is introduced. Then the character of the PN-varactor dioide and the principle of frequency multiplier are studied. At millimeter waves a PN-varactor is ofen driven into forward conduction region where the multiplication is partly resistive. Due to this it is essential to know the multiplier performance with arbitrary set of diode and embedding network parameters. So several kinds of analysis methods of nonlinear microwave circuits are given. Microstrip is used as transmission line of varactor tripler circuitry. Then relying on the HP ADS software, the low pass filter, the band pass filter, embedding impedances matched circuits, idler circuitry and bias voltage circuit are designed. The antipodal-finline transition is used in order to test conveniently. The experiments identify that the circuit structures are reasonable. The power of the output is about 0.12mW and the efficiency is 0.12%.更多还原