公开(公告)号：EP0707349A1

公开(公告)日：1996-04-17

申请号：EP95307300.4

申请日：1995-10-13

Applicant: COM DEV LTD.

Inventor： Hegmann, Frank A. ,  Moffat, Steven H. ,  Poulin, G. Darcy ,  Preston, John S.

IPC: H01L39/16 ,  H01P1/10

CPC classification number: H01L39/18 ,  H01P1/10

Abstract: A low insertion loss, wide bandwidth, microwave switch (1) has a superconducting transmission line (5) that can reversibly go from a superconducting state to a normal state by the application of a DC voltage. When in the normal state, the switch is "off" and microwave signals are attenuated. To reduce the voltage necessary to cause switching, the width of the transmission line is decreased. This decrease in voltage is accomplished in a controlled manner so that there are no spurious reflections produced on the line, resulting in a wide operating bandwidth. Previous microwave switches use other means to switch between superconducting and normal and suffer from disadvantages such as relatively slow switching time, complexity or narrow bandwidths as a result.

Abstract translation: 低插入损耗宽带宽微波开关（1）具有通过施加直流电压可逆地从超导状态转变为正常状态的超导传输线（5）。 当处于正常状态时，开关为“关”，微波信号衰减。 为了减少导致切换所需的电压，传输线的宽度减小。 电压的这种降低以受控的方式实现，使得在线路上不产生寄生反射，导致宽的工作带宽。 以前的微波开关使用其他方式在超导和正常之间切换，并且具有诸如相对较慢的开关时间，复杂性或窄带宽的缺点。