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南京电子器件研究所研究开发的无源微波部件 ,适用于 GSM、R- GSM、F- GSM基站系统。双定向耦合器的主要技术指标如下 : 频段 / MHz 92 1～ 96 0主路插损 / d B 0 .2正向耦合度 / d B 40± 5正向耦合度 / d B 40± 5耦合口隔离度 / d B 2 0三阶交调 / d BC 9
Nanjing Institute of Electronic Devices research and development of passive microwave components for GSM, R-GSM, F-GSM base station system. The main technical specifications of the double directional coupler are as follows: Frequency band / MHz 92 1 ~ 96 0 Main path insertion loss / d B 0 .2 Forward coupling degree / d B 40 ± 5 Forward coupling degree / d B 40 ± 5 Coupling port Isolation / d B 2 0 Third order intermodulation / d BC 9