摘要
该文提出了一种3dB正交电调耦合器。该耦合器基于传输线变换技术进行设计,利用变容二极管调节3dB正交耦合器的中心频率,实现了从1.8~2.8GHz的中心频率调节范围,在可调范围内实现S11优于-15dB,S31大于-4.4dB,直通和耦合端的相位差为90±5°。该耦合器具有结构紧凑,偏置电路简单的优点。
A 3dB hybrid coupler is presented.This coupler is designed based on the theory of transmission line transformation.The center frequency of 3dB hybrid coupler can be achieved in 1.8 - 2.8GHz by placing a varactor.The couple level is better than -4.4dB and return loss S11 is below -15dB in working band, while maintaining 90±5° phase quadrature between the coupled ports.The coupler can reduce size and cost.
出处
《电子质量》
2014年第9期32-34,38,共4页
Electronics Quality
关键词
电调
小型化
正交耦合器
Electronically tunable
miniaturization
hybrid coupler
