Systems, devices, and methods related to RF front-end architectures with integrated antenna switch circuitry
A system may include an antenna. A system may include a module including a power amplifier and an antenna switch. A system may include an antennaplexer communicatively coupled to the antenna and the antenna switch, the antennaplexer positioned between the antenna switch and the antenna in a signal path. A system may include a controller communicatively coupled to the module, the controller configured to control the antenna switch with an override signal.
1 . A system comprising:
a plurality of antennas including a first antenna;
a first module including a first power amplifier and a first antenna switch;
a first antennaplexer communicatively coupled to the first antenna and the first antenna switch, the first antennaplexer positioned between the first antenna switch and the first antenna in a first signal path;
a radio-frequency front-end controller communicatively coupled to the first module, the radio-frequency front-end controller configured to instruct the first module to select the first antenna to transmit a signal; and
a master controller communicatively coupled to the first module, the master controller configured to send an override signal to the first module in connection with an emergency communication, the override signal configured to override selection of the first antenna by the radio-frequency front-end controller to transmit a signal.
2 . The system of claim 1 wherein the master controller is configured to send the override signal to the first module in response to an occurrence of a vehicle collision.
3 . The system of claim 2 wherein the occurrence of the vehicle collision is determined by the master controller.
4 . The system of claim 2 wherein the radio-frequency front-end controller makes a determination of the occurrence of the vehicle collision and the radio-frequency front-end controller sends the determination to the master controller.
5 . The system of claim 4 wherein the determination is made based on at least one of an inertial measurement unit, an accelerometer, or a collision sensor.
6 . The system of claim 1 wherein the override signal includes a code indicative of an antenna to select.
7 . The system of claim 1 wherein the override signal causes the first antenna switch to select the first antenna based on at least one of a state, a condition, or a performance of the first antenna.
8 . The system of claim 7 wherein the state, the condition, or the performance of the first antenna is received from the radio-frequency front-end controller.
9 . The system of claim 1 further comprising a second antenna and a second antennaplexer communicatively coupled to the second antenna and the first antenna switch, the second antennaplexer positioned between the first antenna switch and the second antenna in a second signal path.
10 . The system of claim 9 wherein the override signal causes the first antenna switch to select the second antenna and route a transmission signal to the second antennaplexer.
11 . The system of claim 1 further comprising a second module including a second power amplifier and a second antenna switch, the second antenna switch communicatively coupled with the first antenna switch.
12 . The system of claim 11 wherein the override signal causes the first antenna switch to route a transmission signal to a second antenna via the second antenna switch.
13 . The system of claim 11 wherein the first module includes a power amplifier with integrated duplexer associated with a frequency band and the second module includes a diversity receiver associated with the frequency band.
14 . The system of claim 11 wherein the first module includes a power amplifier with integrated duplexer associated with a frequency band and the second module includes a multiple-in-multiple-out (MIMO) diversity receiver associated with the frequency band.
15 . A controller of a radio-frequency device comprising:
a first pinout configured to provide a first override signal to a first module including a first amplifier and a first antenna switch, the first override signal configured to override selection of an antenna by a radio-frequency front-end controller to transmit a signal in an emergency communication;
a second pinout configured to provide a second override signal to a second module including a second amplifier and a second antenna switch, the second override signal configured to override selection of an antenna by the radio-frequency front-end controller to transmit a signal in an emergency communication; and
a memory configured to store instructions that cause the controller to determine an occurrence of a vehicle collision event and provide at least one of the first override signal or the second override signal.
16 . The controller of claim 15 wherein the controller is configured to receive at least one of a state, a condition, or a performance associated with an antenna and generate the first override signal that instructs the first antenna switch to select the antenna based on the at least one of the state, the condition, or the performance.