A Study on Fabrication of Electrically Tuned Duplex

The electrically tuned duplex filter,as a typical integrated electromechanical device,is widely used for communication equipment both in military and civil fields.However,this kind of filter has not been manufactured on a large scale,due to its variety in form,complex structure,difficulty in processing,and especially for the extreme difficulty in adjustment.In this paper,through considering a typical structure of this kind of filter,and through the simulation of its electromagnetic structure,we found the critical structure factors that have great effect on the electrical performance.Furthermore,technological process analyses of the critical factors are performed,and the process schedule as well as the key-process point of control are established.The necessary clamps are also designed.Through these efforts,the adjustment of filter is greatly eased or even avoided and mass production is realized.