CMOS power amplifier matching circuit

Abstract

The invention discloses a CMOS power amplifier matching circuit. The CMOS power amplifier matching circuit comprises a circuit board and an extra-chip matching network and a power amplification integrated chip which are arranged on the circuit board; the power amplification integrated chip comprises a high frequency power amplifier, a low frequency power amplifier and an intra-chip matching network, the high frequency power amplifier is connected with the intra-chip matching network, and the low frequency power amplifier is connected with the extra-chip matching network. The CMOS power amplifier matching circuit can integrate the advantages of the intra-chip matching network and the extra-chip matching network, and a PA is divided into a high frequency part and a low frequency part, wherein the high frequency part is achieved through the intra-chip matching network, and design difficulty of the PCB is decreased; the low frequency part is achieved through the extra-chip matching network, and good performance is achieved.

Description

technical field [0001] The invention relates to the field of power amplification, in particular to a CMOS power amplifier matching circuit. Background technique [0002] After entering the 21st century, the contradiction between energy demand and supply has become more and more prominent. All walks of life around the world are striving to achieve high-efficiency energy utilization. This puts forward high requirements for wireless communication integrated circuit systems, covering low-voltage, A series of relatively demanding indicators such as low power consumption, high performance, light weight, and small size. At present, mobile communication devices are all designed with digital-analog hybrid integrated circuits, that is, the front-end RF receiving circuit part is an analog system, and the part after the back-end A / D converter is a digital system. Due to the requirements of low voltage, low power consumption and small size, the single-chip integration of the front-end a...

AI Technical Summary

Problems solved by technology

[0003] At present, the output matching network of CMOS power amplifiers basically adopts two types of on-chip and off-chip. The internal matching network is not suitable for low frequency bands, and the off-chip matching network increases the difficulty of PCB design.

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