Rf360 Singapore Pte. Ltd.

Yu Jen Chong

Kamran Cheema

Bambang Kunardi

Chong Choon Lee

Aspects herein include minimizing hot spots on a filter chip by creating thermal radiators using mechano-acoustic structures and connection circuitry. A gradual increase of metal to wafer relation provides better heat dissipation and heat sinking. Shunt lines of a ladder type arrangement of SAW resonators comprise a broadened section. Resonators that are subsequent to each other in the series signal line are connected via a common busbar extending over a length of subsequent series resonators. A lateral extension of the common busbars represents a first section of a respective shunt line. A first shunt line section between a node and the parallel resonator of a shunt line comprises a section that is broader than the common busbar, the broadened section extending over the width of the parallel resonator. The first reflector of the parallel resonator that faces the laterally adjacent series resonator is formed from the broadened section.

Saw device with improved thermal management

This invention focuses on minimizing the hot spots on a filter chip by creating thermal radiators using the mechano-acoustic structures and connection circuitry. A gradual increase of metal to wafer relation is made to provide better heat dissipation and heat sinking. Preferably the shunt lines of the ladder type arrangement of SAW resonators (RS, RS, RS) comprise a broadened section (BBCN). Each two series resonators (RS, RS, RS) that are subsequent to each other in the series signal line are connected via a common busbar (BBCN) extending over a whole length of that subsequent series resonators, a lateral extension of the common busbars represents a first section of a respective shunt line each, each first shunt line section between a node and the parallel resonator (RP, RP) of a shunt line (SLS) comprises a broadened section (BS) that is broader than the common busbar, the broadened section extends over the whole width of the parallel resonator (RP), the first reflector (REF) of the parallel resonator that faces the laterally adjacent series resonator is formed from the broadened section (BS).

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Singapore, Singapore

Yu Jen Chong