STRIP-LINE BANDPASS FILTER Russian patent published in 2018 - IPC H01P1/20 

FIELD: physics.

SUBSTANCE: invention refers to the field of microwave radio engineering and can be used in the receiving systems in order to isolate the useful signal. Strip-line bandpass filter contains the dielectric substrate, on one side of which the metal base is placed and on the other side the conductors connected in the form of the closed rectangular frame are placed. On the outer side of the frame, parallel to its long sides the conductors, which are electromagnetically connected to the frame, are placed, where some ends are open, and the input and output of the filter are connected to the other ends. Inside the frame, two additional conductors are installed parallel to its long sides, one end of which is connected to the opposite short sides of the frame, the other end of one conductor is open, and the second end of the other conductor is connected to the metal substrate through the opening in the substrate. In this case, the conductors, which are installed inside the frame, are arranged coaxially or parallel to each other.

EFFECT: technical result consists in the reduced dimensions of the filter while maintaining the symmetry of the resonator.

3 cl, 2 dwg