A power amplifier and its power control method
A power amplifier and power control technology, which is applied in the direction of power amplifiers, amplification control, amplifiers, etc., can solve the problems of output power loss with temperature, limited data transmission speed, and limited application requirements, so as to reduce power consumption and optimize The effect of OOK modulation
Active Publication Date: 2022-04-12
VERISILICON MICROELECTRONICS SHANGHAI +3
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Problems solved by technology
[0006] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a power amplifier and its power control method, which are used to solve the problem of limited data transmission speed, limited application requirements, complex circuits, and occupied chip area in the prior art. Large, output power loss with temperature and other issues
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[0068] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.
[0069] see Figure 1 to Figure 6 . It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic idea of the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the components in actual implementation. Dimensional drawing, the type, quantity and proportion of each component can be changed arb...
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The present invention provides a power amplifier and a power control method thereof, comprising: cascading a previous stage circuit and a cascaded driving stage of the power amplifier; a bias circuit providing a bias voltage for the controllable amplifier stage; connecting the The bias circuit and the controllable amplification stage at the output end of the cascaded driving stage, the controllable amplification stage includes a power amplification module, the power of the output signal is controlled by adjusting the number of the power amplification module, and at the same time, it acts on the described Turning on and off the bias voltage of the power amplifier module realizes binary on-off key modulation. The present invention realizes three schemes for controlling the output power, flexibly controls the speed of the signal switch under the OOK modulation mode, and the optimized bias circuit compensates the power loss caused by the temperature rise, and the circuits of the present invention are all realized by CMOS technology, which is convenient Integrate into SoC system.
Description
technical field [0001] The invention relates to the field of integrated circuits, in particular to a power amplifier and a power control method thereof. Background technique [0002] The power amplifier is the key module of the transmitter. It is located at the back end of the transmitter. It is generally used in wireless communication systems to amplify the modulated signal to a certain output power and send it to the antenna for transmission. [0003] The rapid development of the wireless communication market continues to promote the development of transceivers in the direction of high integration, low power consumption, and low cost. Therefore, more and more chips are designed and implemented using cheap and relatively mature and reliable CMOS technology. In order to obtain better performance, traditional power amplifiers are mostly designed and realized by GaAs and other processes, which makes it difficult to integrate the power amplifier with other CMOS circuits, which ...
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IPC IPC(8): H03F3/24H03G3/30
CPCH03F3/245H03G3/3042
Inventor 郭杨李玉蔡语昕王胜磊
Owner VERISILICON MICROELECTRONICS SHANGHAI