| 摘要 |
A filter and a method of making a filter to remove unwanted frequency harmonics associated with current filters. The filter is made up of resonators (#1, #2, #3) such that the filter resonates a design frequency. Whereby, at least two resonators are coupled together between an input (I/O) and an output (I/O) and at least one of the resonators is of a different design from other resonators, such that the resonator of a different design resonates the same design frequency as the other resonators and resonates different higher order harmonic frequencies than the other resonators. The present invention also provides methods of improving skirt response for a filter, as well as other response properties of the filter. |
