Multi-band pass filter

摘要

An multi-band pass filter is disclosed. The multi-band pass filter in accordance with an embodiment of the present invention includes: a housing comprised with an input terminal and an output terminal separated from each other; a high pass filter installed in one inside of the housing and electrically connected to the input terminal and configured to form a plurality of resonator patterns with the circuit patterns on the printed circuit board; and a dual band reject filter series-connected with the high pass filter and provided between the high pass filter and the output terminal by forming a plurality of cavities inside the housing and furnishing each of the cavities with a resonator.

主权项

1. A multi-band pass filter passing different frequency bands, comprising:
a housing comprised with an input terminal and an output terminal separated from each other; a high pass filter installed in one inside of the housing and electrically connected to the input terminal and configured to form a plurality of resonator patterns with circuit patterns on a printed circuit board; and a dual band reject filter serially connected with the high pass filter and provided between the high pass filter and the output terminal by forming a plurality of cavities inside the housing and furnishing each of the plurality of cavities with each of a plurality of resonators, wherein the dual band reject filter comprises: a first band reject filter serially connected with the high pass filter by arranging some of the plurality of cavities to be adjacent to the high pass filter and comprising transmission lines installed side by side with some of the plurality of resonators inside the some of the plurality of cavities; and a second band reject filter serially connected with the first band reject filter through transmission lines installed side by side with remaining resonators of the plurality of resonators inside remaining cavities of the plurality of cavities arranged between the first band reject filter and the output terminal.