Method for configuring power in wireless communication system and apparatus thereof

Patent metadata

Field	Value
Publication number	US-2020280285-A1
Application number	US-202016875222-A
Country	US
Kind code	A1
Filing date	May 15, 2020
Priority date	Nov 28, 2017
Publication date	Sep 3, 2020
Grant date	—

Abstract

An electronic device is provided. The electronic device includes an antenna array configured to include a plurality of antenna modules, a communication circuit configured to include a plurality of power amplifiers connected with the plurality of antenna elements and a plurality of phase shifters, at least one processor operatively connected with the communication circuit, and a memory operatively connected with the at least one processor and includes instructions.

First claim

What is claimed is:

1 . An electronic device, comprising:
an antenna array comprising a first antenna element and a second antenna element; a communication circuit comprising a first power amplifier connected to the first antenna element and a second power amplifier connected to the second antenna element; a processor operatively connected to the communication circuit; and a memory operatively connected to the processor and stores instructions, when executed, cause the processor to:
output a first signal through the first antenna element with a first gain of the first power amplifier,
output a second signal through the second antenna element with a second gain of the second power amplifier, and
change the second gain of the second power amplifier based on a difference between a first transmit power corresponding to the first signal and a second transmit power corresponding to the second signal.

2 . The electronic device of claim 1 , wherein the instructions, when executed, cause the processor to change the second gain when difference is greater than a threshold.

3 . The electronic device of claim 2 , wherein the instructions, when executed, cause the processor to change the second gain based on the first transmit power when difference is greater than the threshold.

4 . The electronic device of claim 3 , wherein the instructions, when executed, cause the processor to change the second gain by changing at least one of a quiescent current or a bias voltage of the second power amplifier.

5 . The electronic device of claim 3 , wherein the first transmit power is less than the second transmit power.

6 . The electronic device of claim 1 , wherein the instructions, when executed, cause the processor to:
obtain the first transmit power while the first power amplifier operates in a linear input-output state, and obtain the second transmit power while the second power amplifier operates in the linear input-output state.

7 . The electronic device of claim 1 , wherein the instructions, when executed, cause the processor to turn-off the first power amplifier while outputting the second signal.

8 . The electronic device of claim 1 ,
wherein the communication circuit further comprises a first phase shifter electrically connected to the first antenna element and a second phase shifter electrically connected to the second antenna element, and wherein the instructions, when executed, cause the processor to change a parameter associated with at least one of the first phase shifter and the second phase shifter after changing the second gain.

9 . The electronic device of claim 8 , wherein the instructions, when executed, cause the processor to:
transmit a third signal through the antenna array after changing the second gain, and change a parameter associated with at least one of the first phase shifter and the second phase shifter based on a third transmit power of the third signal.

10 . The electronic device of claim 9 , wherein the instructions, when executed, cause the processor to change the parameter when difference between an input power for the third signal and the third transmit power is greater than a threshold.

11 . The electronic device of claim 10 ,
wherein the communication circuit further comprises a coupler configured to feedback at least a part of third signal, and wherein the instructions, when executed, cause the processor to:
obtain a first feedback power corresponding to a 1 dB compression point (P1 dB) of the first power amplifier through the coupler, and
obtain a second feedback power corresponding to a P1 dB of the second power amplifier.

12 . The electronic device of claim 11 , wherein the input power of the third signal corresponds to the first feedback power or the second feedback power.

13 . A non-transitory computer-readable medium storing instructions, when executed by a processor of an electronic device, causing the processor to:
output a first signal through a first antenna element of an antenna array of the electronic device by applying a first gain to a first power amplifier connected to the first antenna element; output a second signal through a second antenna element of the antenna array by applying a second gain to a second power amplifier connected to the second antenna element; and change the second gain of the second power amplifier based on a difference between a first transmit power corresponding to the first signal and a second transmit power corresponding to the second signal.

14 . The non-transitory computer-readable medium of claim 13 , wherein the instructions, when executed, cause the processor to change the second gain when difference is greater than a threshold.

15 . The non-transitory computer-readable medium of claim 14 , wherein the instructions, when executed, cause the processor to change the second gain based on the first transmit power when difference is greater than the threshold.

16 . The non-transitory computer-readable medium of claim 15 , wherein the first transmit power is less than the second transmit power.

17 . The non-transitory computer-readable medium of claim 13 , wherein the instructions, when executed, cause the processor to:
transmit a third signal through the antenna array after changing the second gain, and change a parameter associated with at least one of a first phase shifter connected to the first antenna element and a second phase shifter connected to the second antenna element based on a third transmit power of the third signal.

18 . The non-transitory computer-readable medium of claim 17 , wherein the instructions, when executed, cause the processor to change the parameter when difference between an input power for the third signal and the third transmit power is greater than a threshold.

19 . The non-transitory computer-readable medium of claim 18 ,
wherein the instructions, when executed, cause the processor to:
obtain a first feedback power corresponding to a 1 dB compression point (P1 dB) of the first power amplifier, and
obtain a second feedback power corresponding to a P1 dB of the second power amplifier.

20 . The non-transitory computer-readable medium of claim 19 , wherein the input power of the third signal corresponds to the first feedback power or the second feedback power.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Lee Young Min
• An Yong Jun
• Lee Yu Seon

Classifications

• H04B17/12

  of transmit antennas, e.g. of the amplitude or phase · CPC title

• H04B17/13 Primary

  of power amplifiers, e.g. gain or non-linearity · CPC title

• H03F2200/451

  the amplifier being a radio frequency amplifier · CPC title

• H03F1/0211 Primary

  with control of the supply voltage or current · CPC title

• H04B7/0417

  Feedback systems · CPC title