| 摘要 |
An electrical signal filter defined by a block of dielectric material with a top surface, a bottom surface, side surfaces, and through-holes extending between the top and bottom surfaces. In one embodiment, a plurality of walls extend outwardly from the top surface to define a peripheral rim and filter cavity. A pattern of metallized and unmetallized areas is defined on selected surfaces of the block including an area of metallization that covers at least a portion of the top surface and at least one of the walls to define at least one input/output electrode on the wall. In one embodiment, a pair of input/output electrodes are formed on a pair of posts defined on one of the walls and the filter is adapted for mounting to a printed circuit board with the rim of the walls against the board and the posts coupled to respective input and output pads on the board. |
