论文部分内容阅读
民用小型无线电话机的一些指标(如双工灵敏度等)需在双工条件下测试。以前往往用串衰减器或用耦合器的方法,这样,为抵消衰减器或耦合器的衰减量,信号发生器输出要加大,由于输出大,接线之间的空间耦合影响了测试的准确性。我们原来用自制耦合器的方法来测试,接线或耦合器动一动都能影响测试结果。而且测出数据还需经过换算,不甚方便。最近,我们试用了用环行器测试双工灵敏度,获得较好的效果。这种方法比较方便、合理。
Some of the indicators of civilian small radiotelephones (such as duplex sensitivity, etc.) to be tested under duplex conditions. In the past, string attenuators or couplers were often used. In order to counteract the attenuator or coupler attenuation, the signal generator output should be increased. Due to the large output, the spatial coupling between the wires affected the accuracy of the test . We used to test the way homemade couplers, wiring or coupler can affect the test results. And measured data also need to be converted, not very convenient. Recently, we tried to test the duplex sensitivity with the circulator, get better results. This method is more convenient and reasonable.