Method and apparatus for optimizing output power levels in power amplifiers
View Patent ↗Some embodiments discussed relate to an apparatus comprising a power amplifier module. The power amplifier module includes a plurality of sensors, and a first digital communication port configured to provide a monitor signal from at least one of the plurality of sensors. The apparatus includes a transceiver module coupled to provide an signal to an input of the power amplifier the transceiver module including a second digital communication port configured to receive the monitor signal from the first digital communication port, a processing unit configured to generate at least one of a bias control signal and a back-off signal dependent upon the monitor signal, and a power controller to receive the at least one of bias control signal and the back-off signal and provide at least one further input signal to the power amplifier based on at least one of the bias control signal and the back-off signal.
1. An apparatus comprising:
a power amplifier including at least one sensor to provide a monitor signal; and
a transceiver coupled to provide a signal to an input of the power amplifier, the transceiver including:
a processing unit configured to generate a bias control signal and a power adjusting signal based on the monitor signal,
a summing circuit configured to combine the power adjusting signal and another signal to provide a combined signal, and
a power controller to receive the combined signal and provide an input signal to the power amplifier based on the combined signal.
2. The apparatus of claim 1 , wherein the at least one sensor is a temperature sensor, an internal current sensor, a linearity sensor, or a power sensor.
3. The apparatus of claim 1 , wherein the at least one sensor includes a memory to store a table including a plurality of power adjusting signals and a plurality of biasing signals.
4. The apparatus of claim 3 , wherein each of the plurality of power adjusting signals and the plurality of biasing signals corresponds to different communication channels.
5. The apparatus of claim 1 , further comprising an antenna adapted to send and receive signals from the transceiver.
6. The apparatus of claim 1 , wherein the at least one sensor is a plurality of sensors.
7. The apparatus of claim 1 , wherein the power controller is configured to receive a feedback signal from the power amplifier.
8. The apparatus of claim 1 , wherein the power amplifier and the transceiver are distinct modules.
9. The apparatus of claim 1 , wherein the power amplifier and the transceiver are incorporated in a common apparatus.
10. A method comprising:
receiving a monitor signal, the monitor signal generated by at least one sensor;
processing the monitor signal and generating a bias control signal and a power adjusting signal based on the monitor signal; and
receiving the bias control signal and the power adjusting signal and generating an input signal for a power amplifier based on an initial signal, the power adjusting signal and the bias control signal.
11. The method of claim 10 , further comprising generating the monitor signal from at least one sensor.
12. The method of claim 10 , further comprising storing the bias control signal and the power adjusting signal corresponding to a particular frequency channel in a memory.
13. The method of claim 12 , further comprising using the stored bias control signal and the power adjusting signal corresponding to the particular frequency for subsequent burst of transmission in a frequency-hop application.
14. The method of claim 10 , wherein storing the bias control signal and the power adjusting signal includes storing the bias control signal and the power adjusting signal for different communication channels in a table within a memory.
15. The method of claim 10 , wherein generating a monitor signal from the at least one sensor includes generating a monitor signal from a temperature sensor, an internal current sensor, a linearity sensor, or a power sensor.
16. The method of claim 10 , further comprising combining the power adjusting signal and the initial signal and providing the combined signal to a power controller.
17. The method of claim 10 , further comprising receiving a feedback signal from a power amplifier at a power controller.
18. A system comprising:
a power amplifier including at least one sensor to provide a monitor signal; and
a transceiver coupled to an input of the power amplifier, the transceiver configured to:
receive the monitor signal,
generate a bias control signal and a power adjusting signal based on the monitor signal,
combine the power adjusting signal and another signal to generate a combined signal and provide the combined signal to a power controller, and
provide an input signal to the power amplifier based on the combined signal.
19. The system of claim 18 , wherein the at least one sensor includes a temperature sensor, an internal current sensor, a linearity sensor, or a power sensor.
20. The system of claim 18 , wherein the processing unit further comprises a memory to store a table including a plurality of power adjusting signals and a plurality of biasing signals.
21. The system of claim 20 , wherein each of the plurality of power adjusting signals and the plurality of biasing signals corresponds to different communication channels.
22. The system of claim 18 , further comprising an antenna adapted to send and receive signals from the transceiver.
23. The apparatus of claim 18 , wherein the at least one sensor is a plurality of sensors.
24. An apparatus comprising:
a transceiver, including:
a processing unit configured to generate a bias control signal and a power adjusting signal based on a monitor signal,
a summing circuit configured to combine the power adjusting signal and another signal and provide a combined signal, and
a power controller to receive the combined signal and provide a power controller signal based on the combined signal.
25. The apparatus of claim 24 , further comprising a power amplifier coupled to the transceiver, the power amplifier to provide the monitor signal and receive the power controller signal.
26. The apparatus of claim 24 , further comprising sensor coupled to the transceiver, the sensor to provide the monitor signal.
27. The apparatus of claim 26 , wherein the sensor is at least one of a temperature sensor, an internal current sensor, a linearity sensor, or a power sensor.