公开(公告)号：US5144266A

公开(公告)日：1992-09-01

申请号：US650120

申请日：1991-02-04

申请人： Richard M. Dougherty ,  Stephen W. Boser

发明人： Richard M. Dougherty ,  Stephen W. Boser

IPC分类号： H03H11/38

CPC分类号： H03H11/38

摘要： A broadband high frequency active MMIC circulator which includes low parasitic devices (MESFETs or HEMTs) and shunt feedback for impedance contouring in conjunction with a cascode/cascade isolation/gain network. To achieve circulation, a common series feedback node is required for each active element. While conventional active circulator topologies require the use of a resistive element for operation with a deleterious effect on noise performance, this broadband high frequency active MMIC circulator functions with either resistive or reactive common series feedback. When reactive feedback is selected, major improvements in noise performance can be realized.

摘要翻译： 包括低寄生器件（MESFET或HEMT）的宽带高频有源MMIC环路器以及与共源共栅/级联隔离/增益网络结合的阻抗轮廓的分流反馈。 为了实现循环，每个有源元件都需要一个公共的串联反馈节点。 虽然传统的有源环形器拓扑结构需要使用电阻元件进行操作，对噪声性能产生有害影响，但是这种宽带高频有源MMIC环行器具有电阻或电抗公共串联反馈功能。 当选择反馈反馈时，可以实现噪声性能的重大改进。