Hybrid acoustic lc filter with harmonic suppression
AssigneeSkyworks Solutions, Inc.
InventorsWeimin Sun, Hai H. Ta, Bo Pan
Life of this patent
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Abstract
Aspects of this disclosure relate to hybrid acoustic LC filter with harmonic suppression. The hybrid acoustic LC filter includes a hybrid passive/acoustic and a non-acoustic LC filter cascaded with the hybrid passive/acoustic filter. The hybrid passive/acoustic filter can be configured to filter a radio frequency signal. The hybrid passive/acoustic filter can include acoustic resonators and a non-acoustic passive component. The non-acoustic LC filter can be configured to suppress a harmonic of the radio frequency signal. The non-acoustic LC filter can be a low pass filter or a harmonic notch filter, for example. Related multiplexers, wireless communication devices, and methods are disclosed.
Claims20
A hybrid acoustic 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 acoustic resonators and a non-acoustic passive component;
- 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 multiplexer comprising:
- a first filter configured to filter a radio frequency signal, the first filter including a hybrid passive/acoustic filter and a non-acoustic LC filter cascaded with the hybrid passive/acoustic filter, the hybrid passive/acoustic filter including acoustic resonators and a non-acoustic passive component, and the non-acoustic LC filter configured to suppress a harmonic of the radio frequency signal;
- and
- a second filter coupled to the first filter at a common node.
A wireless communication device comprising:
- a radio frequency front end including a filter configured to filter a radio frequency signal, the filter including a hybrid passive/acoustic filter and an LC filter cascaded with the hybrid passive/acoustic filter, the hybrid passive/acoustic filter including acoustic resonators and a non-acoustic passive component, and the non-acoustic LC filter configured to suppress a harmonic of the radio frequency signal;
- and
- 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.
Dependencies are inferred from the claim text.