摘要
定向耦合器是射频与微波电路中一类常见的关键器件。在射频与微波电路中常常需要检测放大器或发射机的的正向输出功率和反向功率,因此需要用定向耦合器从输出功率中按一定比例耦合出少量功率进行测量。定向耦合器种类繁多,为了帮助读者理解定向耦合器的原理,这里选择一种结构简明、对称(对偶)的定向耦合器典型电路,详细分析其工作原理。
Directional coupler is a common key device in radio frequency and microwave circuits. In radio frequency and microwave circuits, the forward output power and reverse power of the amplifier or transmitter are often needed to be detected. Therefore, the directional coupler is needed to couple a small amount of power from the output power to measure. There are many directional couplers. In order to help readers understand the principle of directional couplers, a typical circuit of directional couplers with simple structure and symmetry is selected to analyze its working principle in detail.
作者
张承云
Zhang Chengyun(Communication technology research institute of nanjing panda handa technology co.,LTD.,Nanjing Jiangsu,210014)
出处
《电子测试》
2018年第23期56-57,60,共3页
Electronic Test
关键词
正向功率
反向功率
特性阻抗
定向耦合
forward power
Reverse power
Characteristic impedance
Directional coupling
