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US 12,756,408 B2Granted
Radio frequency module with reduced intermodulation distortion
AssigneeSkyworks Solutions, Inc.
InventorDavid Richard Pehlke
Life of this patent
Estimating the term…
Abstract
A radio frequency module includes a filter having a first portion with a passband corresponding to a first receive frequency band and a second portion with a passband corresponding to at least a portion of a first transmit aggressor frequency band. A signal path is configured to couple between an antenna and the filter. The filter includes an antenna-side port coupled to the signal path. The module further includes a receive amplifier coupled to the first portion of the filter and a tunable termination impedance coupled to the second portion of the filter.
Claims20
A radio frequency module comprising:
- a filter including a first duplexer for a first frequency band and having a first receive filter portion with a passband corresponding to a first receive signal of the first frequency band and a first transmit filter portion with a passband corresponding to a first transmit signal of the first frequency band, the filter further including a second duplexer for a second frequency band and having a second receive filter portion with a passband corresponding to a second receive signal of the second frequency band and a second transmit filter portion with a passband corresponding to a second transmit signal of the second frequency band;
- a signal path configured to couple between an antenna and the filter, the filter including an antenna-side port coupling to the signal path to the first duplexer and the second duplexer;
- a receive amplifier coupled to the first receive filter portion of the first duplexer of the filter, the receive amplifier configured to amplify the first receive signal;
- a first band switch;
- and
- a first tunable termination impedance coupled to the first transmit filter portion of the first duplexer of the filter through the first band switch, the first tunable termination impedance configured to terminate the first transmit filter portion of the first duplexer.
3 more elements
A wireless device comprising:
- a radio frequency front end module including a filter including a first duplexer for a first frequency band and having a first receive filter portion with a passband corresponding to a first receive signal of the first frequency band and a first transmit filter portion with a passband corresponding to a first transmit signal of the first frequency band, the filter further including a second duplexer for a second frequency band and having a second receive filter portion with a passband corresponding to a second receive signal of the second frequency band and a second transmit filter portion with a passband corresponding to a second transmit signal of the second frequency band, the radio frequency front end module further including a receive amplifier coupled to the first receive filter portion of the first duplexer of the filter and configured to amplify the first receive signal, a first band switch, and a first tunable termination impedance coupled to the first transmit filter portion of the filter through the first band switch, the first tunable termination impedance configured to terminate the first transmit filter portion of the first duplexer;
- a transceiver coupled to the radio frequency front end module;
- and
- an antenna coupled to the filter by a signal path of the radio frequency front end module, the filter including an antenna-side port coupling the signal path to the first duplexer and the second duplexer.
1 more element
A radio frequency front end system comprising:
- a filter including a first duplexer for a first frequency band and having a first receive filter portion with a passband corresponding to a first receive signal of the first frequency band and a first transmit filter portion with a passband corresponding to a first transmit signal of the first frequency band, the filter further including a second duplexer for a second frequency band and having a second receive filter portion with a passband corresponding to a second receive signal of the second frequency band and a second transmit filter portion with a passband corresponding to a second transmit signal of the second frequency band;
- a signal path configured to couple between an antenna and the filter, the filter including an antenna-side port coupling the signal path to the first duplexer and the second duplexer;
- a first receive amplifier coupled to the first receive filter portion of the first duplexer of the filter, the first receive amplifier configured to amplify the first receive signal;
- a second receive amplifier coupled to the second receive filter portion of the second duplexer of the filter, the second receive amplifier configured to amplify the second receive signal;
- and
- a first tunable termination impedance coupled to the first transmit filter portion of the first duplexer of the filter through the first band switch, the first tunable termination impedance configured to terminate the first transmit filter portion of the first duplexer.
3 more elements
Dependencies are inferred from the claim text.