铁氧体磁环 meaning in Chinese

ferrite bead

Sectional specification : magnetic oxide ring cores for interference suppression and low level signal transformer applications ; german version en 125500 : 1996
分规范.消除干扰和低频信号传输用铁氧体磁环芯
It is presented that the theory and the manufacturing technology of such analog phase shifter , which are made from conventional 3db quadrature hybrids coupler with two identical varactor - diode networks to provide a shifted phase that varies continuously with biased dc voltage . several analog phase shifters have been made for different operating frequencies . each phase shifter has phase range more than 180 , return loss better than - 20db , insertion loss 4 . 8db including 3db attenuator , transmission difference less than0 . 075 db . computer code phases . bas can present the referenced component values
介绍了利用铁氧体磁环制作窄带3db耦合器的原理和方法，详细分析了利用此耦合器设计制作模拟压控移相器的理论和制作技巧，以及所制作的多种频率的压控移相器的测试技术指标和实际运行情况。