High-power linear power amplifier

Abstract

The embodiment of the invention provides a high-power linear power amplifier, which comprises a signal conditioning circuit, which is used for processing an input signal and outputting the processed signal; a power amplification circuit, which is used for receiving the signal processed by the signal conditioning circuit, conducting power amplification processing on the signal processed by the signal conditioning circuit and outputting the amplified power signal; a microprocessor circuit, which is used for controlling the operation of the signal conditioning circuit and the power amplification circuit and setting the parameters of the signal conditioning circuit, wherein the power amplification circuit comprises a differential amplification circuit, which is used for amplifying the signal processed by the signal conditioning circuit; a buffer amplification circuit, which is used for again amplifying the signal output by the differential amplification circuit; and a parallel push-pull amplification circuit, which is used for conducting power amplification processing on the signal amplified by the buffer amplification circuit and outputting the amplified power signal. By using the power amplifier, higher frequency bandwidth and output power can be obtained.

Description

technical field [0001] The invention relates to the field of signal processing, in particular to a high-power linear power amplifier. Background technique [0002] At present, many signal sources and other devices that can output signals have very small output power. When technicians need to drive some external devices such as motors, piezoelectric sensors and other external devices, if ordinary signal sources are used to directly Drive, because the output power of the signal source is very small, it is impossible to directly drive the above-mentioned peripherals, so there is a power amplifier on the market that amplifies the signal power. At present, there are mainly two types of power amplification capabilities in the market: 1. Power signal source: combine the signal generator and power amplifier, as a whole instrument, generally amplify the signal generated by itself; 2. Power signal amplifier (Also called power amplification module): There is no signal generation funct...

AI Technical Summary

Problems solved by technology

[0003] The inventor found in the process of realizing the present invention that the prior art has at least the following defects: the main and common power signal sources currently on the market include at least the following: the power bandwidth is not high, and its built-in power amplifier can amplify The frequency of the signal is lower

Images