While the all - pass network for equalizing improves the precision of signal transmission . at last the circuitry realization ? some test data and trouble shooting are presented . the measure results are much better than the product of the other institute 下变频系统的群延迟均衡器，采用全通网络电路来实现，采用ansoft的serenade软件对其进行仿真与优化，该设计提高了系统传输信号的准确度。
