多比特相位量化器的优化设计

Optimization design of the multi-bit phase quantizer

雷达技术的进步 ,对多比特相位量化数字射频存贮提出要求 .讨论相位量化数字射频存贮的关键器件———模数变换器 (亦称相位量化器 )的优化设计方法 .以 4bit相位量化为例 ,提出相位量化器的拓扑结构和编码方法 .该拓扑结构具有对称性 ,消除负载不平衡对量化精度的影响 ;编码的目的在于减少贮频信道数 ,简化数字射频存贮的结构 .

With the development of radar technology, electronic countermeasure systems demand the multi-bit digital radio frequency memory. The paper deals with the optimization design of the phase quantizer (PQ)-an analog-to-digital converter. As an example, the topological structure and relative encode technique of 4?bit PQ are presented. This topological structure is symmetrical and can remove the influence of load unbalance on the performance of PQ. The purpose of encoding is to reduce the channel number of storage, and simplify the structure of DRFM. The optimization design method can be applied for any bit phase quantizers.