基于线性叠加技术的四倍频单片设计

Design of MMIC Quadrupler Based on Linear Superposition Technique

针对传统无源四倍频器需要两级二倍频级联且变频损耗较大等问题,利用线性叠加技术,研制了40 GHz单级无源四倍频单片。采用平面环形巴伦与正交混合网络相级联的方式,设计了四路移相功分结构,实现了基波和其他无用谐波的抑制,简化了电路设计,降低了倍频损耗。根据设计仿真结果,完成了四倍频器的流片与测试工作。实测结果表明,在20 dBm的驱动功率下,最大输出功率为-2.7 dBm。

Aiming at the problem of two stage frequency doubling cascade and large frequency conversion loss in the traditional passive quadrupler, a 40 GHz single stage passive MMIC quadrupler chip is developed by using linear superposition technique. The four - way phase shift power divider is designed by the cascade of planar ring balun and orthogonal hybrid network, which make the suppression of fundamental and other useless harmonics. The circuit design is simplified, and the frequency multiplication loss is reduced by this method. According to the simulation re- suits, the tape - out and test for the quadrupler is completed. The measured results show that under the driving power of 20 dBm, the maximum output power is -2.7 dBm.