Multiplexer with hybrid acoustic passive filter
AssigneeSkyworks Solutions, Inc.
InventorsHai H. Ta, Bo Pan, Weimin Sun
Life of this patent
Estimating the term…
Abstract
Aspects of this disclosure relate to a multiplexer with a hybrid acoustic passive filter. The multiplexer includes a plurality of filters configured to filter respective radio frequency signals, a shared filter coupled between each of the plurality of filters and a common node, and a radio frequency filter coupled to the common node. At least a first filter of the plurality of filters includes acoustic resonators and a non-acoustic passive component. Related multiplexers, wireless communication devices, and methods are disclosed.
Claims20
A multiplexer with a hybrid acoustic inductor-capacitor (LC) filter with harmonic suppression, the multiplexer comprising:
- a first filter including a hybrid passive/acoustic filter to filter a radio frequency signal and a non-acoustic LC filter configured to suppress a harmonic of the radio frequency signal, the non-acoustic LC filter cascaded with the hybrid passive/acoustic filter, and the hybrid passive/acoustic filter including a first acoustic resonator, a second acoustic resonator, an inductor, and a capacitor;
- and
- a second filter coupled to the first filter at a common node, the non-acoustic LC filter being coupled between the hybrid passive/acoustic filter and the common node.
A hybrid acoustic inductor-capacitor (LC) filter with harmonic suppression, the hybrid acoustic LC filter comprising:
- a hybrid passive/acoustic filter configured to filter a radio frequency signal, the hybrid passive/acoustic filter including a first acoustic resonator, a second acoustic resonator, a first inductor, a second inductor, and a capacitor;
- and
- a non-acoustic LC filter cascaded with the hybrid passive/acoustic filter, the non-acoustic LC filter configured to suppress a harmonic of the radio frequency signal.
A wireless communications device comprising:
- a radio frequency front end including a multiplexer, the multiplexer including a first filter and a second filter, the first filter including a hybrid passive/acoustic filter to filter a radio frequency signal and a non-acoustic inductor-capacitor (LC) filter configured to suppress a harmonic of the radio frequency signal, the second filter coupled to the first filter at a common node, the non-acoustic LC filter cascaded with the hybrid passive/acoustic filter, the non-acoustic LC filter being coupled between the hybrid passive/acoustic filter and the common node, and the hybrid passive/acoustic filter including a first acoustic resonator, a second acoustic resonator, an inductor, and a capacitor;
- an antenna in communication with the radio frequency front end, the antenna configured to transmit a filtered version of the radio frequency signal with the harmonic suppressed;
- a baseband processor;
- and
- a transceiver in communication with the radio frequency front end, the transceiver also in communication with the baseband processor.
Dependencies are inferred from the claim text.