IP Library Granted Patent US 8,428,523
Granted Patent B2
US 8,428,523 · App. 13/168,529 · Granted Apr 23, 2013

Tuning matching circuits for transmitter and receiver bands as a function of transmitter metrics

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Quick Facts
Patent No.
US 8,428,523
App. No.
13/168,529
Granted
Apr 23, 2013
Kind
B2
Abstract

A non-transitory computer-readable storage medium includes computer instructions to determine a translation function based on a transmit frequency of a transmit mode and a receive frequency of a receive mode of a transceiver for a communication device, and adjust a variable reactance component of an impedance matching circuit for the receive mode based on the translation function, where the impedance matching circuit is operably coupled with an antenna of the communication device. Other embodiments are disclosed.

Claims (58)

1. A method comprising:

obtaining at least one operational metric for a transceiver during a transmit mode of a communication device;

adjusting a variable reactance component of an impedance matching circuit for the transmit mode based on the at least one operational metric, wherein the impedance matching circuit is operably coupled with an antenna of the communication device;

determining S-parameters of the impedance matching circuit;

determining a translation function based on the at least one operational metric, based on the S-parameters and based on a transmit frequency of the transmit mode and a receive frequency of a receive mode of the communication device; and

adjusting the variable reactance component of the impedance matching circuit for the receive mode based on the translation function.

2. The method of claim 1 , comprising performing the adjusting of the variable reactance component for the transmit mode without utilizing operational metrics measured during the receive mode.

3. The method of claim 2 , comprising performing the adjusting of the variable reactance component for the receive mode without utilizing operational metrics measured during the receive mode.

4. A method, comprising:

obtaining at least one operational metric for a transceiver during a transmit mode of a communication device;

adjusting a variable reactance component of an impedance matching circuit for the transmit mode based on the at least one operational metric, wherein the impedance matching circuit is operably coupled with an antenna of the communication device;

generating a mapping function for transmit and receive frequencies;

determining a translation function based on the at least one operational metric, based on the mapping function and based on the transmit frequency of the transmit mode and the receive frequency of the receive mode of the communication device; and

adjusting the variable reactance component of the impedance matching circuit for the receive mode based on the translation function.

5. The method of claim 1 , comprising:

monitoring for a change in the at least one operational metric during a subsequent transmit mode of the communication device; and

adjusting the variable reactance component of the impedance matching circuit for the subsequent transmit mode based on the change in the at least one operational metric.

6. A method comprising:

obtaining at least one operational metric for a transceiver during a transmit mode of a communication device;

adjusting a variable reactance component of an impedance matching circuit for the transmit mode based on the at least one operational metric, wherein the impedance matching circuit is operably coupled with an antenna of the communication device;

determining S-parameters of the impedance matching circuit;

determining a translation function based on the at least one operational metric, based on the S-parameters and based on a transmit frequency of the transmit mode and a receive frequency of a receive mode of the communication device;

adjusting the variable reactance component of the impedance matching circuit for the receive mode based on the translation function; and

adjusting the variable reactance component of the impedance matching circuit for a subsequent transmit mode based on a previous adjustment made to the variable reactance component for a previous transmit mode.

7. The method of claim 1 , wherein the at least one operational metric comprises a return loss.

8. The method of claim 1 , wherein the at least one operational metric comprises a current drain.

9. The method of claim 1 , wherein the at least one operational metric comprises output power of the transceiver.

10. The method of claim 1 , wherein the at least one operational metric comprises a vector measurement of a transmitter reflection coefficient associated with the transceiver.

11. The method of claim 1 , comprising adjusting the variable reactance component for at least one of the transmit and the receive modes based in part on performance results for the communication device obtained from previous adjustments of the variable reactance component, wherein the performance results are stored in a memory of the communication device.

12. The method of claim 1 , wherein the variable reactance component comprises one or more electrically tunable capacitors.

13. The method of claim 1 , wherein the variable reactance component comprises one or more Micro-Electro-Mechanical Systems (MEMS) variable reactance components.

14. The method of claim 4 , wherein the at least one operational metric comprises a return loss.

15. The method of claim 4 , wherein the at least one operational metric comprises a current drain.

16. The method of claim 4 , wherein the at least one operational metric comprises output power of the transceiver.

17. The method of claim 4 , wherein the at least one operational metric comprises a vector measurement of a transmitter reflection coefficient associated with the transceiver.

18. The method of claim 4 , wherein the variable reactance component comprises one or more electrically tunable capacitors.

19. The method of claim 4 , wherein the variable reactance component comprises one or more Micro-Electro-Mechanical Systems (MEMS) variable reactance components.

20. A communication device, comprising:

an antenna;

a transceiver coupled with the antenna;

an impedance matching circuit coupled with the antenna and the transceiver, wherein the impedance matching circuit includes a variable reactance component; and

a processor coupled with the impedance matching circuit, the transceiver and the antenna, wherein the processor:

obtains at least one operational metric for the transceiver during a transmit mode;

adjusts the variable reactance component for the transmit mode based on the at least one operational metric,

determines S-parameters of the impedance matching circuit;

determines a translation function based on the at least one operational metric, based on the S-parameters and based on a transmit frequency of the transmit mode and a receive frequency of a receive mode;

adjusts the variable reactance component for the receive mode based on the translation function; and

adjusts the variable reactance component for a subsequent transmit mode based on a previous adjustment made to the variable reactance component for a previous transmit mode.

21. The communication device of claim 20 , wherein the at least one operational metric comprises a return loss.

22. The communication device of claim 20 , wherein the at least one operational metric comprises a current drain.

23. The communication device of claim 20 , wherein the at least one operational metric comprises output power of the transceiver.

24. The communication device of claim 20 , wherein the at least one operational metric comprises a vector measurement of a transmitter reflection coefficient associated with the transceiver.

25. The communication device of claim 20 , wherein the variable reactance component comprises one or more electrically tunable capacitors.

26. The communication device of claim 20 , wherein the variable reactance component comprises one or more Micro-Electro-Mechanical Systems (MEMS) variable reactance components.

27. The method of claim 1 , further comprising adjusting the variable reactance component for at least one of the transmit and the receive modes based in part on a use case scenario of the communication device.

28. The method of claim 4 , further comprising adjusting the variable reactance component for at least one of the transmit and the receive modes based in part on a use case scenario of the communication device.

29. The method of claim 6 , further comprising adjusting the variable reactance component for at least one of the transmit and the receive modes based in part on a use case scenario of the communication device.

30. The communication device of claim 20 , wherein the processor adjusts the variable reactance component for at least one of the transmit and the receive modes based in part on a use case scenario of the communication device.

Assignments (4)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 5, 2020
From: BLACKBERRY LIMITED
To: NXP USA, INC.
Reel/Frame 052095/0443 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 30, 2013
From: RESEARCH IN MOTION RF, INC.
To: RESEARCH IN MOTION CORPORATION
Reel/Frame 030909/0908 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 30, 2013
From: RESEARCH IN MOTION CORPORATION
To: BLACKBERRY LIMITED
Reel/Frame 030909/0933 →
CHANGE OF NAME Recorded Jul 31, 2012
From: PARATEK MICROWAVE, INC.
To: RESEARCH IN MOTION RF, INC.
Reel/Frame 028686/0432 →