Rf360 Singapore Pte. Ltd.

Bambang Kunardi

Kamran Cheema

Yu Jen Chong

Chong Choon Lee

Guan Qiong Cui

Joerg Hornsteiner

Felipe De Los Rios

Soon Ying Teoh

Philippe Cortese

Poh Sen Lim

Sean Chun-Hsiang Yang

Aspects are provided for multiband multiplexers. One example is a multiband multiplexer with a first filter element configured to have a first passband that spans a first predefined frequency range of a first communication band and a second predefined frequency range of a second communication band, wherein the first predefined frequency range overlaps a portion of the second predefined frequency range, a second filter element configured to have a second passband distinct from the first passband, a third filter element configured to have a third passband distinct from the first and second passbands, and a fourth filter element configured to have a fourth passband distinct from the first, second, and third passbands.

Multiband multiplexer for carrier aggregation

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

Bambang Kunardi