Abstract: Described herein are front-end architectures and wireless devices that support uplink carrier aggregation and simultaneous MIMO operations in a plurality of band combinations. The front-end architectures include a combination of low-band, mid-band, high-band, MIMO, and uplink carrier aggregation modules to provide the described functionality. The architectures include an antenna switch module coupled to a first antenna and to a second antenna. The architectures do not use mid-band and high-band switch combining. The architectures use low-band filters in diplexers or triplexers positioned before an antenna switch module.

Abstract: Circuits, devices and methods related to amplification with active gain bypass. In some embodiments, an amplifier can include a first amplification path implemented to amplify a signal, and having a cascode arrangement of a first input transistor and a cascode transistor to provide a first gain for the signal when in a first mode. The amplifier can further include a second amplification path implemented to provide a second gain for the signal while bypassing at least a portion of the first amplification path when in a second mode. The second amplification path can include a cascode arrangement of a second input transistor and the cascode transistor shared with the first amplification path. The amplifier can further include a switch configured to allow routing of the signal through the first amplification path in the first mode or the second amplification path in the second mode.

Abstract: Uplink carrier aggregation architecture. In some embodiments, an uplink (UL) carrier aggregation (CA) architecture may include a first antenna port and a second antenna port. The UL CA architecture may also include a first radio-frequency (RF) circuit configured to route a first transmit (TX) signal and a first receive (RX) signal to and from the first antenna port, respectively, the first RF circuit further configured to route a second RX signal from the first antenna port. The UL CA architecture may further include a second RF circuit configured to route a second TX signal to the second antenna port to provide UL CA capability between the first and second TX signals.

Abstract: Radio-frequency front-end systems and devices. In some embodiments, a front-end system can include a first mid-band amplifier system configured to amplify transmit and receive signals in a first mid-band. The front-end system can further include a second mid-band amplifier system configured to amplify at least a transmit signal in a second mid-band, such that the front-end system is capable of simultaneous uplink operations in the first mid-band and the second mid-band.

Abstract: A wireless device comprising a first antenna and second antenna, a transceiver and a radio frequency front end system electrically coupled between the transceiver and the antennas. The RF front end system includes a first module operable to provide a high band transmit signal to the first antenna, receive a first high band receive signal and a first mid band receive signal from the first antenna. The first high band receive signal has a frequency range greater than that of the first mid band receive signal. The RF front end system further includes a second module operable to provide a mid band transmit signal to the second antenna, receive a second mid band receive signal and a second high band receive signal from the second antenna. The second high band receive signal has a frequency range greater than that of the second mid band receive signal.

Abstract: Front-end architecture having split triplexers for carrier aggregation and MIMO support. In some embodiments, a multiplexing architecture can include an assembly of filters configured to support carrier aggregation with one or more antennas. The assembly of filters can include a first triplexer configured to support a low-band, a mid-band, and a first high-band. The assembly of filters can further include a second triplexer configured to support the low-band, the mid-band, and a second high-band. The multiplexing architecture can further include a switch assembly implemented between the assembly of filters and respective one or more nodes associated with the one or more antennas.

Abstract: A wireless device comprising a first antenna and second antenna, a transceiver and a radio frequency front end system electrically coupled between the transceiver and the antennas. The RF front end system includes a first module operable to provide a high band transmit signal to the first antenna, receive a first high band receive signal and a first mid band receive signal from the first antenna. The first high band receive signal has a frequency content greater than that of the first mid band receive signal. The RF front end system further includes a second module operable to provide a mid band transmit signal to the second antenna, receive a second mid band receive signal and a second high band receive signal from the second antenna. The second high band receive signal has a frequency content greater than that of the second mid band receive signal.

Abstract: A radio frequency front end system can include a first module configured to provide multi-input multi-output (MIMO) receive operations for a first plurality of mid bands and a first plurality of high bands. The first module can be further configured to provide transmit operations for the plurality of mid bands. The first module can include a first node. The radio frequency front end system can include a second module configured to provide transmit and receive operations for a second plurality of mid bands and a second plurality of high bands. The second module can be a power amplifier integrated duplexer (PAiD) module. The second module can include a second node. The first module and the second module can be coupled by a signal path at the first node and the second node, respectively.

Abstract: Described herein are front-end architectures and wireless devices that support uplink carrier aggregation and simultaneous MIMO operations in a plurality of band combinations. The front-end architectures include a combination of low-band, mid-band, high-band, MIMO, and uplink carrier aggregation modules to provide the described functionality. The architectures include an antenna switch module coupled to a first antenna and to a second antenna. The second antenna is coupled to the antenna switch module through a diplexer that combines high- and mid-band signals with low-band signals received from a low-band module, the low-band signals coupled to the diplexer without passing through the antenna switch module.

Abstract: Uplink carrier aggregation architecture. In some embodiments, an uplink (UL) carrier aggregation (CA) architecture may include a first antenna port and a second antenna port. The UL CA architecture may also include a first radio-frequency (RF) circuit configured to route a first transmit (TX) signal and a first receive (RX) signal to and from the first antenna port, respectively, the first RF circuit further configured to route a second RX signal from the first antenna port. The UL CA architecture may further include a second RF circuit configured to route a second TX signal to the second antenna port to provide UL CA capability between the first and second TX signals.

Abstract: Front-end architectures for multiple antennas. In some embodiments, a front-end architecture for wireless application can include a first mid-band amplifier system configured to amplify transmit and receive signals in a first mid-band. The front-end architecture can further include a second mid-band amplifier system configured to amplify at least a transmit signal in a second mid-band, such that the front-end architecture is capable of simultaneous uplink operations in the first mid-band and the second mid-band.

Abstract: Radio-frequency (RF) amplifier having active gain bypass circuit. In some embodiments, an amplifier can include a first amplification path implemented to amplify a signal, and having a cascode arrangement of a first input transistor and a cascode transistor to provide a first gain for the signal when in a first mode. The amplifier can further include a second amplification path implemented to provide a second gain for the signal while bypassing at least a portion of the first amplification path when in a second mode. The second amplification path can include a cascode arrangement of a second input transistor and the cascode transistor shared with the first amplification path. The amplifier can further include a switch configured to allow routing of the signal through the first amplification path in the first mode or the second amplification path in the second mode.

Abstract: Described herein are front-end architectures and wireless devices that support uplink carrier aggregation and simultaneous MIMO operations in a plurality of band combinations. The front-end architectures include a combination of low-band, mid-band, high-band, MIMO, and uplink carrier aggregation modules to provide the described functionality. The architectures include an antenna switch module coupled to a first antenna and to a second antenna. The second antenna is coupled to the antenna switch module through a diplexer that combines high- and mid-band signals with low-band signals received from a low-band module, the low-band signals coupled to the diplexer without passing through the antenna switch module.

Abstract: Front-end architecture having split triplexers for carrier aggregation and MIMO support. In some embodiments, a multiplexing architecture can include an assembly of filters configured to support carrier aggregation with one or more antennas. The assembly of filters can include a first triplexer configured to support a low-band, a mid-band, and a first high-band. The assembly of filters can further include a second triplexer configured to support the low-band, the mid-band, and a second high-band. The multiplexing architecture can further include a switch assembly implemented between the assembly of filters and respective one or more nodes associated with the one or more antennas.

Abstract: Described herein are front-end architectures that use switch-combining in a MIMO module to provide uplink carrier aggregation and simultaneous MIMO operations in a plurality of band combinations. The front-end architectures include a combination of low-band, mid-band, high-band, MIMO, and uplink carrier aggregation modules to provide the described functionality. To provide certain band combinations, one or more of the modules can implement switchplexing to provide the targeted functionality.

Abstract: Described herein are front-end architectures that use switch-combining in a MIMO module to provide uplink carrier aggregation and simultaneous MIMO operations in a plurality of band combinations. The front-end architectures include a combination of low-band, mid-band, high-band, MIMO, and uplink carrier aggregation modules to provide the described functionality. To provide certain band combinations, one or more of the modules can implement switchplexing to provide the targeted functionality.

Abstract: A wireless device comprising a first antenna and second antenna, a transceiver and a radio frequency front end system electrically coupled between the transceiver and the antennas. The RF front end system includes a first module operable to provide a high band transmit signal to the first antenna, receive a first high band receive signal and a first mid band receive signal from the first antenna. The first high band receive signal has a frequency range greater than that of the first mid band receive signal. The RF front end system further includes a second module operable to provide a mid band transmit signal to the second antenna, receive a second mid band receive signal and a second high band receive signal from the second antenna. The second high band receive signal has a frequency range greater than that of the second mid band receive signal.

Abstract: A wireless device comprising a first antenna and second antenna, a transceiver and a radio frequency front end system electrically coupled between the transceiver and the antennas. The RF front end system includes a first module operable to provide a high band transmit signal to the first antenna, receive a first high band receive signal and a first mid band receive signal from the first antenna. The first high band receive signal has a frequency content greater than that of the first mid band receive signal. The RF front end system further includes a second module operable to provide a mid band transmit signal to the second antenna, receive a second mid band receive signal and a second high band receive signal from the second antenna. The second high band receive signal has a frequency content greater than that of the second mid band receive signal.

Abstract: Disclosed herein are front-end architectures for wireless communication that support a wide range of combinations of uplink carrier aggregation (UL CA) and simultaneous multiple-input multiple-output (MIMO) functionality. Embodiments can include a separate mid-band power amplifier module and a separate high band power amplifier module, and can establish various numbers of antenna outputs from these modules to connect to available diplexers or triplexers in selected ways to cover all intended use cases. Duplication of filters, duplexers, and/or quadplexers is reduced or minimized by re-using filtering in a selectively designed MIMO receive module that supports switch-combined TX filters. A UL CA power amplifier module makes use of the MIMO receive module, as well as the re-use of available filters in the mid-band primary power amplifier module.

Abstract: Radio-frequency (RF) amplifier having active gain bypass circuit. In some embodiments, an amplifier can include a first amplification path implemented to amplify a signal, and having a cascode arrangement of a first input transistor and a cascode transistor to provide a first gain for the signal when in a first mode. The amplifier can further include a second amplification path implemented to provide a second gain for the signal while bypassing at least a portion of the first amplification path when in a second mode. The second amplification path can include a cascode arrangement of a second input transistor and the cascode transistor shared with the first amplification path. The amplifier can further include a switch configured to allow routing of the signal through the first amplification path in the first mode or the second amplification path in the second mode.