The Signal Integrity Design And Optimization of High Speed RF Optical Receiver Module

In this paper, a RF optical receiver module applied in the RoF system with 12 GHz bandwidth is presented. To guarantee the lowest reflection loss and insertion loss, we made some optimizations to impedance discontinuities in the system which will cause serious signal integrity (SI) problems. Link simulation was also carried out to ensure that the transmission curve of the module in the DC-12GHz bandwidth was smooth and there was no abrupt change on the basis of single-point impedance matching design. Through the amplifying performance test of electrical signal of the module board, we found that the module can achieve flatter transmission characteristics in the DC-12GHz bandwidth, with high gain and low reflection loss.