| 摘要 |
<p>The filter (36) comprises a circuit (38) formed of a thin metallization film on a substrate (4). Four resonators (14,16,18,20) resonating in at least one mode, are sequentially formed on the substrate. The circuit has an input and an output. Two of the resonators are cross-coupled. The maximum number of resonators which are subjected to cross-coupling is equal to n-2, where n is the number of resonators in the circuit. An electrode strip (40) located on the substrate and extending between the pair of resonators which are cross-coupled serves as the cross-coupling device. An independent claim is also included for method of operating low loss acoustic wave filter.</p> |
