Hybrid acoustic lc filter cascaded with lc filter
AssigneeSkyworks Solutions, Inc.
InventorsHai H. Ta, Bo Pan, Weimin Sun, Dogan Gunes
Life of this patent
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Abstract
Aspects of this disclosure relate to a hybrid acoustic LC filter cascaded with a non-acoustic LC filter. The hybrid acoustic filter can filter a radio frequency signal. The hybrid acoustic LC filter can include acoustic resonators, an inductor, and a capacitor. The inductor and capacitor can be external to an acoustic resonator die. The non-acoustic LC filter includes an LC circuit. Related multiplexers, wireless communication devices, and methods are disclosed.
Claims20
A cascaded filter for radio frequency filtering, the cascaded filter comprising:
- a hybrid acoustic LC filter configured to filter a radio frequency signal, the hybrid acoustic LC filter including a first acoustic resonator on an acoustic resonator die, a second acoustic resonator, a capacitor external to the acoustic resonator die, and an inductor external to the acoustic resonator die;
- and
- a non-acoustic LC filter cascaded with the hybrid acoustic LC filter, the non-acoustic LC filter including an LC circuit.
A multiplexer comprising:
- a first filter coupled to a common node and configured to filter a radio frequency signal, the first filter including a hybrid acoustic LC filter and a non-acoustic LC filter cascaded with the hybrid acoustic LC filter, the hybrid acoustic LC filter including a first acoustic resonator on an acoustic resonator die, a second acoustic resonator, a capacitor external to the acoustic resonator die, and an inductor external to the acoustic resonator die;
- and
- a second filter coupled to the common node.
A wireless communication device comprising:
- an antenna;
- and
- a radio frequency front end in communication with the antenna, the radio frequency front end including a filter configured to filter a radio frequency signal for transmission via the antenna, the filter including a hybrid acoustic LC filter and a non-acoustic LC filter cascaded with the hybrid acoustic LC filter, the hybrid acoustic LC filter including acoustic resonators on an acoustic resonator die, a capacitor external to the acoustic resonator die, and an inductor external to the acoustic resonator die.
Dependencies are inferred from the claim text.