Power amplifier supply voltage control method and device and wireless equipment

Abstract

The invention discloses a power amplifier supply voltage control method. The method comprises the steps of acquiring a preset transmitting power requirement required to be met by wireless equipment where a power amplifier is located; and switching the working state according to the working frequency and the transmitting power requirement so as to enable a power supply system to output a corresponding power amplifier supply voltage according to the switched working state. The invention also discloses a power amplifier supply voltage control device, a power amplifier and wireless equipment. By adopting the embodiment of the invention, the wireless equipment can adapt to the transmitting power requirements of different countries or different channels, the performance of the wireless equipmentcan be improved, and the cost can be reduced.

Description

technical field [0001] The invention relates to the field of wireless equipment, in particular to a power amplifier power supply voltage control method and device, a power amplifier and wireless equipment. Background technique [0002] When wireless devices are shipped to different countries, they need to meet different transmission power requirements before they can be shipped. Different countries or different channels in the same country have different requirements for the transmission power of wireless devices. Shipping is allowed when the regulations are met. For different countries or different channels in the same country, in order to promote the launch of wireless equipment products in multiple countries as soon as possible, the power amplifier (Power Amplifier, PA) in wireless equipment generally adopts the same hardware circuit design, and the certified power and hardware power are compared at the same time. The small value is used as the final transmit power. The...

AI Technical Summary

Problems solved by technology

Channels with lower certified power have lower actual transmission power and do not have high requirements for PA linearity. Using the same power supply voltage as wireless devices with high certified power will lead to low PA efficiency, which results in low certified power wireless devices. Wasted power consumption, increased cooling costs and power adapter costs

In dual-band and tri-band wireless devices, the total power consumption of wireless device products is sometimes constant due to cooling and power adapter cost considerations, which will lead to high power in one frequency band and higher power in the other. In addition, different countries have different transmission power requirements for different frequency bands, which makes the performance cost of wireless equipment exported to some countries not optimal

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