Selective linearization of scalable fault tolerant frequency agile transmitters

Patent metadata

Field	Value
Publication number	US-10763791-B2
Application number	US-201816231353-A
Country	US
Kind code	B2
Filing date	Dec 21, 2018
Priority date	Dec 21, 2018
Publication date	Sep 1, 2020
Grant date	Sep 1, 2020

Abstract

Apparatus and method for selective linearization of scalable fault tolerant frequency agile transmitters. In one embodiment, the method includes receiving timestamped carrier configurations and segmenting the timestamped carrier configurations into time segments having a pre-determined time length. The method also includes determining composite carrier configuration in a present time segment for a predetermined number of future time segments and determining a correction solution of a plurality of correction solutions associated with the composite carrier configuration in a mapping of a plurality of carrier configurations and the plurality of correction solutions. The method includes providing the correction solution to a linearizer of at least one of a plurality of multi-carrier power amplifiers. The plurality of power amplifiers are provided in one or more banks of multi-carrier power amplifiers.

First claim

We claim:

1. A radio frequency (RF) transmitter comprising:
one or more banks of multi-carrier power amplifiers including a plurality of multi-carrier power amplifiers, each of the plurality of multi-carrier power amplifiers including a linearizer; and
an electronic processor coupled to the plurality of multi-carrier power amplifiers and configured to
receive timestamped carrier configurations,
segment the timestamped carrier configurations into time segments having a pre-determined time length,
determine composite carrier configuration in a present time segment for a predetermined number of future time segments,
determine a correction solution of a plurality of correction solutions associated with the composite carrier configuration in a mapping of a plurality of carrier configurations and the plurality of correction solutions, and
provide the correction solution to the linearizer of at least one of the plurality of multi-carrier power amplifiers.

2. The RF transmitter of claim 1 , wherein the linearizer is one selected from a group consisting of a predistorter and a feed forward correction loop.

3. The RF transmitter of claim 1 , wherein the composite carrier configuration includes at least one selected from a group consisting of: number of radio frequency (RF) carriers, a sum of root mean square power for each of the RF carriers, a difference in frequency between a highest RF carrier and a lowest RF carrier, a difference between an adjacent RF carrier pair frequency difference and a minimum frequency difference, a sum of peak power for each of the RF carriers, median RF carrier frequency, and carrier bandwidths of each of the RF carriers.

4. The RF transmitter of claim 1 , wherein the correction solution includes at least one selected from a group consisting of: an enable/disable state of the linearizer and an initial correction set for the linearizer.

5. The RF transmitter of claim 1 , wherein the timestamped carrier configurations includes an enable/disable state of the one or more banks of multi-carrier power amplifiers.

6. The RF transmitter of claim 5 , wherein the electronic processor is further configured to activate the one or more banks of multi-carrier power amplifiers based on the enable/disable state of the one or more banks of multi-carrier power amplifiers.

7. The RF transmitter of claim 1 , further comprising a memory coupled to the electronic processor and configured to store the mapping of the plurality of carrier configurations and the plurality of correction solutions.

8. A method for selective linearization of a scalable fault tolerant frequency agile transmitter, the method comprising:
receiving, using an electronic processor, timestamped carrier configurations,
segmenting, using the electronic processor, the timestamped carrier configurations into time segments having a pre-determined time length,
determining, using the electronic processor, composite carrier configuration in a present time segment for a predetermined number of future time segments,
determining, using the electronic processor, a correction solution of a plurality of correction solutions associated with the composite carrier configuration in a mapping of a plurality of carrier configurations and the plurality of correction solutions, and
providing, using the electronic processor, the correction solution to a linearizer of at least one of a plurality of multi-carrier power amplifiers, the plurality of multi-carrier power amplifiers provided in one or more banks of multi-carrier power amplifiers.

9. The method of claim 8 , wherein the linearizer is one selected from a group consisting of a predistorter and a feed forward correction loop.

10. The method of claim 8 , wherein the composite carrier configuration includes at least one selected from a group consisting of: number of radio frequency (RF) carriers, a sum of root mean square power for each of the RF carriers, a difference in frequency between a highest RF carrier and a lowest RF carrier, a difference between an adjacent RF carrier pair frequency difference and a minimum frequency difference, a sum of peak power for each of the RF carriers, median RF carrier frequency, and carrier bandwidths of each of the RF carriers.

11. The method of claim 8 , wherein the correction solution includes at least one selected from a group consisting of: an enable/disable state of the linearizer and an initial correction set for the linearizer.

12. The method of claim 8 , wherein the timestamped carrier configurations includes an enable/disable state of the one or more banks of multi-carrier power amplifiers.

13. The method of claim 12 , wherein the electronic processor is further configured to activating, using the electronic processor, the one or more banks of multi-carrier power amplifiers based on the enable/disable state of the one or more banks of multi-carrier power amplifiers.

14. The method of claim 8 , further comprising storing, using a memory, the mapping between the plurality of carrier configurations and the plurality of correction solutions.

Assignees

• Motorola Solutions Inc

Inventors

• Hagen Rodney W
• Blozinski Mitchell R
• Drees Dennis M

Classifications

• H04B2001/0425

  with linearisation using predistortion · CPC title

• H04B1/0483

  Transmitters with multiple parallel paths · CPC title

• H03F1/0277 Primary

  Selecting one or more amplifiers from a plurality of amplifiers · CPC title

• H04B1/0475

  with means for limiting noise, interference or distortion (H04B1/0483 takes precedence) · CPC title

• H04B1/0057

  using diplexing or multiplexing filters for selecting the desired band · CPC title