| 摘要 |
The present invention relates to a RF filter module adapted to be connected between an electric circuit and a least one antenna element. The filter module comprises a cavity within a filter housing having a housing wall, and at least one resonator being provided inside said cavity. The housing wall of the filter housing is provided with at least one aperture allowing RF signals to be coupled between an externally arranged non penetrating coupling part and the resonator (s) provided inside said cavity. The invention also relates to a RF filter arrangement and a system for communicating RF signals. |
