Patent ID: 8884726

Claim:
A contact structure of an electromechanical switch for allowing a microwave signal transmitted therewith, comprising: a basic layer made of a printed circuit board and including a static contact made of a printed conducting path on an upper face and a tuning circuit in the vicinity of the static contact; a top layer made of a flexible circuit board and including a floating area made by a nick therein, a moving contact made of a printed conducting path on a lower face of the floating area, and a tuning circuit in the vicinity of the moving contact; and a spacing layer sandwiched between the basic layer and the top layer and formed with a window through which the static contact of the basic layer is exposed to the moving, contact of the top layer, wherein the spacing layer is made with even thickness to provide a gap disposed between the static contact and the moving contact so that the static contact and the moving contact are parallel with each other; wherein the moving contact and the static contact are micro strips for allowing the microwave signal transmitted therein, and each of the static contact and the moving contact has a predetermined line width to render a minimum overlapping contact to improve isolation; wherein the moving contact is actuated to move and then contact the static contact for transmitting the microwave signal, and the tuning circuits in the vicinity of the static contact and the moving contact compensates impedance variation induced between the moving contact and the static contact due to line width change.