Carrier aggregation using diplexers

A radio-frequency (RF) module comprising:

• a packaging substrate configured to receive a plurality of components;
• and
• a multiplexing system implemented on the packaging substrate, the multiplexing system including a first diplexer configured to filter a first transmit signal to a first frequency band for a first antenna and a first receive signal to a second frequency band for the first antenna, the multiplexing system further including a second diplexer configured to filter a second transmit signal to the second frequency band for a second antenna and a second receive signal to the first frequency band for the second antenna, the second diplexer further configured to filter:
• the second receive signal to first frequency band at the same time as the first diplexer filters the first transmit signal to the first frequency band, and the second transmit signal to the second frequency band at the same time as the first diplexer filters the first receive signal to the second frequency band.

A wireless device comprising:

• a transceiver configured to generate a radio-frequency (RF) signal;
• a front-end module (FEM) in communication with the transceiver, the FEM including a packaging substrate configured to receive a plurality of components, the FEM further including a multiplexing system implemented on the packaging substrate, the multiplexing system including a first diplexer configured to filter a first transmit signal to a first frequency band for a first antenna and a first receive signal to a second frequency band for the first antenna, the multiplexing system further including a second diplexer configured to filter a second transmit signal to the second frequency band for a second antenna and a second receive signal to the first frequency band for the second antenna, the second diplexer further configured to filter:
• the second receive signal to first frequency band at the same time as the first diplexer filters the first transmit signal to the first frequency band, and the second transmit signal to the second frequency band at the same time as the first diplexer filters the first receive signal to the second frequency band;
• and
• the first antenna and the second antenna in communication with the FEM, the first antenna and the second antenna configured to transmit an amplified version of the RF signal received from the multiplexing system.