Method for operating electronic device for RF signal transmission and electronic device for the same

Patent metadata

Field	Value
Publication number	US-9660672-B2
Application number	US-201615236363-A
Country	US
Kind code	B2
Filing date	Aug 12, 2016
Priority date	Aug 12, 2015
Publication date	May 23, 2017
Grant date	May 23, 2017

Abstract

A method for operating an electronic device for transmission of a radio frequency (RF) signal includes selecting output power of a power amplifier (PA) required upon transmission of a signal with a second frequency through an antenna, determining a first PA operation voltage corresponding to the selected output power using first information stored in a memory of the electronic device and second information regarding a PA operation voltage corresponding to first output power of the PA at the second frequency, supplying the determined first PA operation voltage to the PA, and supplying input power corresponding to the selected output power at the second frequency to the PA. Other various embodiments are possible.

First claim

What is claimed is:

1. An electronic device comprising:
a housing;
an antenna included in the housing or formed as a portion of the housing;
a power amplifier (PA) electrically connected with the antenna;
a radio frequency (RF) transmission circuit electrically connected with the PA;
a processor electrically connected with the RF transmission circuit and the PA; and
a memory electrically connected with the processor, wherein the memory is configured to store:
first information regarding a PA operation voltage and input power corresponding to output power of the PA at a first frequency and
second information regarding a PA operation voltage corresponding to first output power of the PA at a second frequency different from the first frequency, and

wherein the memory stores instructions that, when executed, enable the processor to:
select output power of the PA required upon transmission of a signal with the second frequency through the antenna,
determine a first PA operation voltage corresponding to the selected output power of the PA using at least one of the first information and the second information,
perform control to supply the determined first PA operation voltage to the PA, and
perform control to supply input power corresponding to the selected output power of the PA at the second frequency to the PA.

2. The electronic device of claim 1 , wherein the memory stores instructions that, when executed, enable the processor to:
determine whether the selected output power of the PA belongs to a preset output power range, and
when the selected output power of the PA belongs to the preset output power range, determine the first PA operation voltage corresponding to the selected output power of the PA using the second information.

3. The electronic device of claim 1 , wherein the memory stores instructions that, when executed, enable the processor to: when the selected output power of the PA is substantially the same as the first output power, determine that a PA operation voltage corresponding to the first output power included in the second information is the first PA operation voltage.

4. The electronic device of claim 1 , wherein the memory stores instructions that, when executed, enable the processor to, when the selected output power is different from the first output power, compute a PA operation voltage corresponding to the selected output power included in the first information and a PA operation voltage corresponding to the selected output power using the second information and determine that the computed PA operation voltage is the first PA operation voltage.

5. The electronic device of claim 4 , wherein the memory stores instructions that, when executed, enable the processor to, when the selected output power is larger than the first output power, compute the PA operation voltage using a preset first constant (F1) based on

V
22

=

V
12

+

F
⁢

⁢
1
×

V
12

×

(

V
21

-

V
11

)

V
11

wherein, V 11 is a PA operation voltage at the first frequency corresponding to the first output power, V 12 is a PA operation voltage at the first frequency corresponding to the selected output power, V 21 is an adjusted PA operation voltage at the second frequency corresponding to the first output power, and V 22 is a PA operation voltage at the second frequency corresponding to the selected output power.

6. The electronic device of claim 4 , wherein the memory stores instructions enabling the processor to, when the selected output power is smaller than the first output power, compute the PA operation voltage using a preset second constant (F2) based on

V
22

=

V
12

+

F
⁢

⁢
2
×

V
12

×

(

V
21

-

V
11

)

V
11

wherein, V 11 is a PA operation voltage at the first frequency corresponding to the first output power, V 12 is a PA operation voltage at the first frequency corresponding to the selected output power, V 21 is an adjusted PA operation voltage at the second frequency corresponding to the first output power, and V 22 is a PA operation voltage at the second frequency corresponding to the selected output power.

7. The electronic device of claim 1 , wherein the memory stores the first information and the second information for each of a plurality of power modes based on a characteristic of the PA.

8. The electronic device of claim 7 , wherein the memory stores instructions that, when executed, enable the processor to:
identify a first power mode corresponding to the selected output power among the plurality of power modes, and
determine the first PA operation voltage corresponding to the selected output power using at least one of the first information and the second information corresponding to the first power mode.

9. The electronic device of claim 1 , wherein the memory is further configured to store third information regarding input power corresponding to second output power of the PA adjusted based on the first information at the second frequency.

10. The electronic device of claim 9 , wherein the memory stores instructions that, when executed, enable the processor to supply input power corresponding to the selected output power determined using the third information to the PA.

11. A method for operating an electronic device for transmission of a radio frequency (RF) signal, the method comprising:
selecting output power of a power amplifier (PA) required upon transmission of a signal with a second frequency through an antenna;
determining a first PA operati

Assignees

• Samsung Electronics Co Ltd
• Samsung Electronics Co Ltd

Inventors

• Lee Young-Min
• Son Jung-Hwan
• Lee Yu-Seon

Classifications

• H03F3/195

  in integrated circuits · CPC title

• H04B1/04 Primary

  Circuits · CPC title

• H03F2200/451

  the amplifier being a radio frequency amplifier · CPC title

• H03F3/213

  in integrated circuits · CPC title

• H03F2200/105

  A non-specified detector of the power of a signal being used in an amplifying circuit · CPC title