CN-117215360-B - Voltage control method, voltage control device and radio frequency circuit

CN117215360BCN 117215360 BCN117215360 BCN 117215360BCN-117215360-B

Abstract

The application discloses a voltage control method, a voltage control device and a radio frequency circuit, and belongs to the field of communication. The method comprises the steps of obtaining a first voltage value of a radio frequency power amplifier under first output power, enabling the radio frequency power amplifier to comprise a plurality of working time slots and a plurality of non-working time slots which are alternately and continuously, enabling power supply voltage of the working time slots to be the first voltage value, enabling power supply voltage of the non-working time slots to be the second voltage value, enabling the power supply voltage of the radio frequency power amplifier to be kept to be the first voltage value in the working time slots of the radio frequency power amplifier, enabling the first voltage value to be reduced to the second voltage value based on a preset voltage adjustment value in the non-working time slots of the radio frequency power amplifier, and enabling the power supply voltage of the radio frequency power amplifier to be the second voltage value, wherein the voltage adjustment value is not larger than a voltage difference value corresponding to a preset capacitance sound value generated by a target detection capacitor.

Inventors

YI WEI
YOU LIWEN

Assignees

维沃移动通信有限公司

Dates

Publication Date: 20260505
Application Date: 20230920

Claims (8)

1. A voltage control method, comprising: Acquiring a first voltage value of the radio frequency power amplifier under a first output power; The radio frequency power amplifier comprises a plurality of working time slots and a plurality of non-working time slots which are alternately and continuously, wherein the power supply voltage of the working time slots is a first voltage value, and the power supply voltage of the non-working time slots is a second voltage value; The method comprises the steps of receiving a power supply voltage of a radio frequency power amplifier, wherein the power supply voltage of the radio frequency power amplifier is kept to be a first voltage value in a working time slot of the radio frequency power amplifier, and reducing the first voltage value to a second voltage value based on a preset voltage adjustment value in a non-working time slot of the radio frequency power amplifier, and keeping the power supply voltage of the radio frequency power amplifier to be the second voltage value, wherein the voltage adjustment value is not larger than a voltage difference value corresponding to a preset capacitance sound value generated by a target detection capacitance; the reducing the first voltage value to a second voltage value based on the preset voltage adjustment value includes: The non-working time slots comprise a plurality of time slots with equal intervals and continuous time slots, and each time slot reduces the voltage adjustment value to enable the first voltage value to be reduced to the second voltage value in a stepped mode.
2. The method of claim 1, wherein the obtaining a first voltage value of the radio frequency power amplifier at a first output power comprises: acquiring a first output power of the radio frequency power amplifier in a first network state; And determining a first voltage value corresponding to the first output power according to a corresponding relation between the preset output power and the power supply voltage value.
3. The method of claim 1, further comprising, after stepwise decreasing the first voltage value to a second voltage value based on the voltage adjustment value: and in the non-working time slot of the radio frequency power amplifier, the second voltage value is stepped up to a first voltage value based on the voltage adjustment value.
4. The method of claim 1, further comprising, after stepwise decreasing the first voltage value to a second voltage value based on the voltage adjustment value: acquiring a third voltage value of the radio frequency power amplifier under the second output power; and in the non-working time slot of the radio frequency power amplifier, the second voltage value is stepped up to a third voltage value based on the voltage adjustment value.
5. The method of claim 4, wherein said obtaining a third voltage value of said radio frequency power amplifier at a second output power comprises: acquiring a second output power of the radio frequency power amplifier in a second network state; And determining a third voltage value corresponding to the second output power according to a corresponding relation between the preset output power and the power supply voltage value.
6. A voltage control apparatus, comprising: the system comprises a voltage value acquisition module, a radio frequency power amplifier, a power supply module and a power supply module, wherein the voltage value acquisition module is used for acquiring a first voltage value of the radio frequency power amplifier under first output power, the radio frequency power amplifier comprises a plurality of alternately and continuously operated time slots and a plurality of non-operated time slots, the power supply voltage of the operated time slots is the first voltage value, and the power supply voltage of the non-operated time slots is the second voltage value; The power supply device comprises a radio frequency power amplifier, a voltage control module, a target detection capacitor, a voltage control module and a voltage control module, wherein the voltage control module is used for keeping the power supply voltage of the radio frequency power amplifier to be a first voltage value in a working time slot of the radio frequency power amplifier; The non-working time slot comprises a plurality of time slots which are equally spaced and continuous, and the voltage control module comprises: and the first voltage adjusting unit is used for reducing the voltage adjusting value every time slot so as to reduce the first voltage value to the second voltage value in a step-like manner.
7. The apparatus of claim 6, wherein the voltage value acquisition module comprises: the power acquisition unit is used for acquiring first output power of the radio frequency power amplifier in a first network state; the voltage value determining unit is used for determining a first voltage value corresponding to the first output power according to a corresponding relation between preset output power and a power supply voltage value.
8. A radio frequency circuit comprising a radio frequency transceiver, a power amplifier, a radio frequency front end and an antenna, wherein the power amplifier provides a supply voltage using a voltage control device as claimed in any one of claims 6 to 7.

Description

Voltage control method, voltage control device and radio frequency circuit Technical Field The application belongs to the technical field of communication, and particularly relates to a voltage control method, a voltage control device and a radio frequency circuit. Background TDD (Time Division Duplexing) the TDD technology is a duplex mode of a communication system, and in TDD mode, different time slots in which transmission and reception are located on the same carrier in a mobile communication system are distinguished by scheduling signals for transmission in different time periods. For its Power supply mode, a radio frequency Power Amplifier (PA) typically uses different supply voltages during transmit/receive (Tx/Rx) time slots. Specifically, in the Tx slot, a higher supply voltage is used to supply power in order to meet the requirements of the transmission power and performance index, and in the Rx slot, a lower fixed voltage is used to supply power. However, the power supply voltage corresponding to the Tx slot varies with the network environment, so that the voltage difference between the Tx slot and the Rx slot also varies. The inverse piezoelectric effect can be generated under the jump of the power supply voltage, so that the capacitance vibration is caused, and the main board is driven to vibrate. When the terminal is in a call state, a buzzing sound generated by the capacitance vibration on the main board, namely, a 4G/5G call capacitance sound can be obviously heard, so that the call experience of a user is greatly influenced. Disclosure of Invention The embodiment of the application aims to provide a voltage control method, a voltage control device and a radio frequency circuit, which can solve the problem of capacitive acoustic interference in a call state. In a first aspect, an embodiment of the present application provides a voltage control method, including: Acquiring a first voltage value of the radio frequency power amplifier under a first output power; The radio frequency power amplifier comprises a plurality of working time slots and a plurality of non-working time slots which are alternately and continuously, wherein the power supply voltage of the working time slots is a first voltage value, and the power supply voltage of the non-working time slots is a second voltage value; and in a non-working time slot of the radio frequency power amplifier, reducing the first voltage value to a second voltage value based on a preset voltage adjustment value, and keeping the power supply voltage of the radio frequency power amplifier to be the second voltage value, wherein the voltage adjustment value is not greater than a voltage difference value corresponding to a preset capacitance sound value generated by a target detection capacitance. In a second aspect, an embodiment of the present application provides a voltage control apparatus, including: the system comprises a voltage value acquisition module, a radio frequency power amplifier, a power supply module and a power supply module, wherein the voltage value acquisition module is used for acquiring a first voltage value of the radio frequency power amplifier under first output power, the radio frequency power amplifier comprises a plurality of alternately and continuously operated time slots and a plurality of non-operated time slots, the power supply voltage of the operated time slots is the first voltage value, and the power supply voltage of the non-operated time slots is the second voltage value; The power supply device comprises a radio frequency power amplifier, a voltage control module, a target detection capacitor and a target detection capacitor, wherein the radio frequency power amplifier is used for generating a target detection capacitor, the voltage control module is used for keeping the power supply voltage of the radio frequency power amplifier to be a first voltage value in a working time slot of the radio frequency power amplifier, reducing the first voltage value to a second voltage value based on a preset voltage adjustment value in a non-working time slot of the radio frequency power amplifier, and keeping the power supply voltage of the radio frequency power amplifier to be the second voltage value, wherein the voltage adjustment value is not larger than the voltage difference corresponding to the preset capacitance sound value generated by the target detection capacitor. In a third aspect, an embodiment of the present application provides a radio frequency circuit, including a radio frequency transceiver, a power amplifier, a radio frequency front end, and an antenna, where the power amplifier uses the voltage control device according to the second aspect to provide a supply voltage. In a fourth aspect, embodiments of the present application provide a readable storage medium having stored thereon a program or instructions which when executed by a processor perform the steps of the method according to the first aspect.