Architectures and methods related to transmit signal routing with re-use of filters
Disclosed herein are systems, circuits, architectures and methods related to front-end architectures for wireless devices configured for uplink carrier aggregation. The disclosed front-end architectures include a first power amplifier module with filters and a second filter-less power amplifier module. The front-end architectures are configured to route signals from the filter-less power amplifier module to the first power amplifier module for filtering. This reduces the size of the second filter-less module relative to a module that utilizes its own filters, thereby reducing costs, reducing size, and/or providing additional space for other modules or other functionality to be included in a wireless device.
1. A front-end architecture for a wireless device, comprising:
a first module having a power amplifier, a switch assembly at an output of the power amplifier, and a plurality of filters;
a second module having a power amplifier and a switch assembly at an output of the power amplifier, the switch assembly of the first module in communication with the switch assembly of the second module, the switch assemblies of the first and second modules configured to route an amplified signal from the power amplifier of the second module to a selected one of the plurality of filters of the first module; and
a third module having a power amplifier, a switch assembly at an output of the power amplifier, and a plurality of filters, the switch assemblies of the second and third modules being configured to route an amplified signal from the power amplifier of the second module to a selected one of the plurality of filters of the third module.
2. The front-end architecture of claim 1 wherein the first module is a high-band power amplifier module with integrated duplexers, and the third module is a mid-band power amplifier module with integrated duplexers.
3. The front-end architecture of claim 2 wherein the second module is a power amplifier module configured to amplify a mid-band signal or a high-band signal.
4. The front-end architecture of claim 3 wherein the switch assemblies of the first and second modules are configured to provide uplink carrier-aggregation operation with a high-band signal amplified and filtered by the high-band power amplifier module with integrated duplexers and a mid-band signal amplified by the power amplifier module and filtered by the high-band power amplifier module with integrated duplexers.
5. The front-end architecture of claim 3 wherein the switch assemblies of the third and second modules are configured to provide uplink carrier-aggregation operation with a mid-band signal amplified and filtered by the mid-band power amplifier module with integrated duplexers and a high-band signal amplified by the power amplifier module and filtered by the mid-band power amplifier module with integrated duplexers.
6. The front-end architecture of claim 3 wherein the power amplifier module is a filter-less module.
7. The front-end architecture of claim 6 further comprising a first power management unit configured to provide supply power to the high-band power amplifier module with integrated duplexers or to the low-band power amplifier module with integrated duplexers.
8. The front-end architecture of claim 7 further comprising a second power management unit configured to provide supply power to the filter-less power amplifier module.
9. The front-end architecture of claim 1 further comprising a first power management unit configured to provide supply power to the first module and a second power management unit configured to provide supply power to the second module.
10. The front-end architecture of claim 9 wherein the first power management unit provides power to the first module to amplify a signal in a first frequency band and provides power to a third module to amplify a signal in a second frequency band.
11. The front-end architecture of claim 10 wherein the third module includes a power amplifier, a switch assembly at an output of the power amplifier, and a plurality of filters.
12. A wireless device comprising:
an antenna configured to facilitate transmission of signals; and
a front-end system in communication with the antenna, the front-end system including a high-band power amplifier module with integrated duplexers, a mid-band power amplifier module with integrated duplexers, and a filter-less power amplifier module, the front-end system configured to provide uplink carrier-aggregation operation with a high-band signal amplified and filtered by the high-band power amplifier module with integrated duplexers and a mid-band signal amplified by the filter-less power amplifier module and filtered by the high-band power amplifier module with integrated duplexers, the front-end system further configured to provide uplink carrier-aggregation operation with a mid-band signal amplified and filtered by the mid-band power amplifier module with integrated duplexers and a high-band signal amplified by the filter-less power amplifier module and filtered by the mid-band power amplifier module with integrated duplexers.
13. The wireless device of claim 12 wherein the front-end system further includes a low-band power amplifier module.
14. The wireless device of claim 12 wherein the front-end system further includes a first power management unit operatively coupled to the high-band power amplifier with integrated duplexers and to the mid-band power amplifier with integrated duplexers.
15. The wireless device of claim 14 wherein the front-end system further includes a second power management unit operatively coupled to the filter-less power amplifier module.
16. The wireless device of claim 15 wherein the first power management unit provides a supply voltage to the high-band power amplifier with integrated duplexers and the second power management unit provides a supply voltage to the filter-less power amplifier module to provide the uplink carrier-aggregation operation with the high-band signal amplified and filtered by the high-band power amplifier module with integrated duplexers and the mid-band signal amplified by the filter-less power amplifier module and filtered by the high-band power amplifier module with integrated duplexers.
17. The wireless device of claim 15 wherein the first power management unit provides a supply voltage to the mid-band power amplifier with integrated duplexers and the second power management unit provides a supply voltage to the filter-less power amplifier module to provide the uplink carrier-aggregation operation with the mid-band signal amplified and filtered by the mid-band power amplifier module with integrated duplexers and the high-band signal amplified by the filter-less power amplifier module and filtered by the mid-band power amplifier module with integrated duplexers.
18. The wireless device of claim 12 wherein the filter-less power module is configured to amplify a mid-band signal or a high-band signal.