Surface acoustic wave device with proximity coupling and with differential inputs and outputs

摘要

The resonator structure has a number of parallel channels with proximity coupling. The channels can be numerically rotated. The first acoustic channel (1) has 2 transducers each with two bus connections (10,11,12,13) and extending electrodes. The bus connections are connected in parallel between them forming a first (E+) and second (E-) differential port. The two differential sections are electrically symmetrical. A second channel (2) has a third port (S).