Devices and methods for radio frequency front end systems

1. A radio frequency front end system for a wireless device, the radio frequency front end system comprising:

a first transmit and receive module configured to provide a high band transmit signal to a first primary antenna terminal and to receive a first high band receive signal and a first mid band receive signal from the first primary antenna terminal;

a second transmit and receive module configured to provide a mid band transmit signal to a second primary antenna terminal and to receive a second mid band receive signal and a second high band receive signal from the second primary antenna terminal;

a third transmit and receive module configured to provide a low band transmit signal to the second primary antenna terminal and to receive a low band receive signal from the second primary antenna terminal;

a first diversity module configured to receive a first high band diversity receive signal and a first mid band diversity receive signal from a first diversity antenna terminal;

a second diversity module configured to receive a second mid band diversity receive signal and a second high band diversity receive signal from a second diversity antenna terminal; and

a third diversity module configured to receive a low band diversity receive signal from the second diversity antenna terminal.

2. The radio frequency front end system of claim 1 wherein the first high band receive signal and the second high band receive signal are operable to support downlink multi-input and multi-output communications.

3. The radio frequency front end system of claim 1 wherein the first mid band receive signal and the second mid band receive signal are operable to support downlink multi-input and multi-output communications.

4. The radio frequency front end system of claim 1 wherein the first high band receive signal and the first mid band receive signal are operable to support carrier aggregation.

5. The radio frequency front end system of claim 1 wherein the second mid band receive signal and the second high band receive signal are operable to support carrier aggregation.

6. The radio frequency front end system of claim 1 wherein the first transmit and receive module includes a first plurality of high band signal paths and a first plurality of mid band signal paths that are switch coupled to the first primary antenna terminal.

7. The radio frequency front end system of claim 6 wherein the second transmit and receive module includes a second plurality of high band signal paths and a second plurality of mid band signal paths that are switch coupled to the second primary antenna terminal.

8. The radio frequency front end system of claim 1 wherein the first transmit and receive module is electrically coupled to the first primary antenna terminal without an intervening multiband handling element.

9. The radio frequency front end system of claim 1 further comprising a diplexer electrically coupled between the second transmit and receive module and the second primary antenna terminal.

10. The radio frequency front end system of claim 9 wherein the third transmit and receive module is electrically coupled to the second primary antenna terminal via the diplexer.

11. The radio frequency front end system of claim 1 wherein the first diversity module is electrically coupled to the first diversity antenna terminal without an intervening multiband handling element, and wherein the radio frequency front end system further includes a diversity diplexer electrically coupled between the second diversity module and the second diversity antenna terminal, the third diversity module electrically coupled to the second diversity antenna terminal via the diversity diplexer.

12. The radio frequency front end system of claim 1 wherein the first diversity module includes a high band output switch configured to receive a plurality of high band diversity receive signals including the first high band diversity receive signal and the second high band diversity receive signal, the high band output switch further configured to provide a transceiver with a selected high band diversity receive signal.

13. The radio frequency front end system of claim 1 wherein the second diversity module includes a mid band output switch configured to receive a plurality of mid band diversity receive signals including the first mid band diversity receive signal and the second mid band diversity receive signal, the mid band output switch further configured to provide a transceiver with a selected mid band diversity receive signal.

14. The radio frequency front end system of claim 1 wherein the third diversity module includes a low band output switch configured to receive a plurality of low band diversity receive signals, the low band output switch further configured to provide a transceiver with a selected low band diversity receive signal.

15. The radio frequency front end system of claim 1 wherein the mid band transmit signal, the first mid band receive signal, and the second mid band receive signal have frequencies between 1 GHz and 2.3 GHz, and the high band transmit signal, the first high band receive signal, and the second high band receive signal have frequencies greater than 2.3 GHz.

16. A wireless device comprising:

a plurality of primary antennas including a first primary antenna and second primary antenna;

a plurality of diversity antennas including a first diversity antenna and a second diversity antenna;

a transceiver; and

a radio frequency front end system electrically coupled between the transceiver and the plurality of primary antennas and electrically coupled between the transceiver and the plurality of diversity antennas, the radio frequency front end system including a first transmit and receive module configured to provide a high band transmit signal to the first primary antenna and to receive a first high band receive signal and a first mid band receive signal from the first primary antenna, the radio frequency front end system further including a second transmit and receive module configured to provide a mid band transmit signal to the second primary antenna and to receive a second mid band receive signal and a second high band receive signal from the second primary antenna, the radio frequency front end system further including a third transmit and receive module configured to provide a low band transmit signal to the second primary antenna and to receive a low band receive signal from the second primary antenna, the radio frequency front end system further including a first diversity module configured to receive a first high band diversity receive signal and a first mid band diversity receive signal from the first diversity antenna, the radio frequency front end system further including a second diversity module configured to receive a second mid band diversity receive signal and a second high band diversity receive signal from the second diversity antenna, the radio frequency front end system further including a third diversity module configured to receive a low band diversity receive signal from the second diversity antenna.

17. The wireless device of claim 16 wherein the first transmit and receive module is electrically coupled to the first primary antenna without an intervening multiband handling element.

18. The wireless device of claim 16 wherein the radio frequency front end system further includes a diplexer electrically coupled between the second transmit and receive module and the second primary antenna.

19. The wireless device of claim 18 wherein the third transmit and receive module is electrically coupled to the second primary antenna via the diplexer.