Multiplexer with dies of different acoustic velocity
AssigneeSkyworks Solutions, Inc.
InventorsLi Chen, Rei Goto
Life of this patent
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Abstract
An acoustic wave device is disclosed. The acoustic wave device can include a first multiplexer that has a first portion and a second portion. The acoustic wave device can include a second multiplexer that has a third portion and a fourth portion. The first portion and the third portion are formed in a first die. The second portion and the fourth portion are formed in a second die. A difference between a velocity of an acoustic wave that is generated by the first die and a velocity of an acoustic wave that is generated by the second die is at least 200 m/s.
Claims20
An acoustic wave device comprising:
- a first die with a multilayer piezoelectric substrate, the first die including a first portion with a first transmission filter and a second portion with a second transmission filter, the first die further including a first multilayer interdigital transducer having at least one layer with a first thickness greater than 0.06L1 where L1 is a wavelength of a first acoustic wave generated by the first die;
- a second die that is a temperature compensated surface acoustic wave die, the second die including a third portion with a first reception filter and a fourth portion with a second reception filter, the second die further including a second multilayer interdigital transducer having at least one layer with a second thickness less than 0.06L2, where L2 is a wavelength of a second acoustic wave generated by the second die, a difference between a velocity of the first acoustic wave and a velocity of the second acoustic wave being at least 200 m/s;
- a first antenna common node connected between the first transmission filter on the first die and the first reception filter on the second die;
- and
- a second antenna common node connected between the second transmission filter on the first die and the second reception filter on the second die.
An acoustic wave device comprising:
- a first die with a multilayer piezoelectric substate, the first die including a first portion with a first transmission filter and a second portion with a second transmission filter, the first die further including a first multilayer interdigital transducer having at least one layer with a first thickness greater than 0.06L1, where L1 is a wavelength of a first acoustic wave generated by the first die;
- and
- a second die that is a temperature compensated surface acoustic wave die, the second die including a third portion with a first reception filter connected to the first transmission filter and a fourth portion with a second reception filter connected to the second transmission filter, the second die further including a second multilayer interdigital transducer having at least one layer with a second thickness less than 0.06L2, where L2 is a wavelength of a second acoustic wave generated by the second die, a difference between a velocity of the first acoustic wave and a velocity of the second acoustic wave being at least 5% of the velocity of the first acoustic wave generated by the first die.
Dependencies are inferred from the claim text.