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In current electronics technology, important devices are frequency filters. These devices are used in many applications, mostly in communication technology, e.g. splitters, ADSL modems etc. In technology of manufacturing of these devices, mostly the discrete components soldered on main substrate, mostly its components are realized in SMD. This is good solution for commercial field, because this technology is well known. For industrial and military and industrial, high reliability is required. This article describes the design of planar frequency bandpass filter and results of its testing. The attention is devoted to the differences between the device theoretically designed and the device which was actually realized. |
