Abstract: The objcet of the present invention is to provide a microwave filter having a shield for electromagnetic interference shielding, wherein the filter is adaped for use in a radio frequency circuitry located in a stage next to an antenna for a radio communication system, such as a mobile communication system, a portable communication system, satellite communication system, and IMT-2000, for passing signals having desired frequencies while removing signals having frequencies having undesired frequencies. According to the present invention, there is provided a microwave filter for electromagnetic interference shielding, comprising a block of dielectric material plated with a metal with the exception of one surface, a plurality of resonators contained within the dielectric block, and a shield fixed on the surface which is not plated, wherein the shield has at least an alignment window for securing the easy alignment between the dielectric block and the shield through a visual observation.

Abstract: An HF filter using resonators of a convex-concave structure is capable of easily inserting a serial or parallel capacitance inside the resonators for the sake of a characteristic improvement of frequency at a stop band desired. In the inventive HF filter, an error compensation is simple and a size smallization is available, by utilizing the resonators of the convex-concave structure.