Front-end modules for carrier aggregation

A wireless communication configuration configured to support carrier aggregation, the wireless communication configuration comprising:

• an antenna configured to receive wireless signals within a plurality of cellular frequency bands;
• a multiplexer coupled to the antenna, the multiplexer including a first filter configured to pass signals within a first frequency range and a second filter configured to pass signals within a second frequency range different from the first frequency range;
• a first front-end module coupled to the first filter;
• and
• a second front-end module coupled to the second filter, each of the first front-end module and the second front-end module including a power amplifier module including one or more power amplifiers configured to amplify signals received at a transceiver port, each of the first front-end module and the second front-end module also including an envelope tracker coupled to the power amplifier module and configured to modify a supply voltage to the power amplifier module to increase efficiency of the one or more power amplifiers, each of the first front-end module and the second front-end module also including a multiplexer coupled to the power amplifier module, the multiplexer configured to direct received signals along a plurality of paths, each of the first front-end module and the second front-end module also including a first duplexer coupled to the multiplexer, the first duplexer configured to process signals using a frequency division duplex scheme, each of the first front-end module and the second front-end module also including a second duplexer coupled to the multiplexer, the second duplexer configured to process signals using a time division duplex scheme, each of the first front-end module and the second front-end module also including an antenna switch module coupled to the first duplexer and to the second duplexer, the antenna switch module configured to direct signals between an antenna port and the first duplexer or the second duplexer, and each of the first front-end module and the second front-end module also including a low noise amplifier module including one or more low noise amplifiers configured to amplify signals received at the antenna port, the low noise amplifier module coupled to the second duplexer to amplify signals using the time division duplex scheme.