ONE-PORT RESONATOR OPERATING WITH SURFACE ACOUSTIC WAVES

摘要

The present invention relates to a one port resonator (1) operating with surface acoustic waves said resonator having an interdigital transducer (2) comprising a first bus bar (6) a second bus bar (7) and electrode fingers (8) said electrode fingers (8) being connected alternately in the longitudinal direction (L) in an excitation region (10) of the interdigital transducer (2) to the first bus bar (6) and the second bus bar (7). The interdigital transducer (2) has a first reversed region (11) in which the electrode fingers (8) are connected alternately in the longitudinal direction (L) to the first bus bar (6) and the second bus bar (7) and which lies directly adjacent to the excitation region (10). The electrode finger (118) of the first reversed region (11) which finger lies directly adjacent to the excitation region (10) in the longitudinal direction (L) and the electrode finger (108) of the excitation region (10) which finger lies directly adjacent to said reversed region are connected to the same bus bar (6 7).