Automatic output power adjustable RF digital-to-analog converter

Abstract

The invention discloses an automatic output power adjustable RF digital-to-analog converter. The automatic output power adjustable RF digital-to-analog converter includes an input signal Din, a digital signal processing module, a sampling and driving module, a sampling clock signal, a switch array module Cascode Switch, a Cascode current source, an analog-to-digital conversion module ADC, a transformer T, an output signal Vout, and a power detector Power Detector; and the input signal Din is connected with the digital signal processing module. The automatic output power adjustable RF digital-to-analog converter has the beneficial effects that an output network of headroom is not occupied, and relatively high output signal power can be obtained under the application of low power consumption; a variable capacitor can flexibly change the center frequency of the output network; an automatic output power tuning circuit can flexibly control the output power according to requirements.

Description

technical field [0001] The invention relates to the field of high-speed and high-precision digital-to-analog converter design, in particular to an automatic output power adjustable RF digital-to-analog converter. Background technique [0002] The vast majority of signals that exist in nature are continuous analog signals, not discrete digital signals. Therefore, a medium is needed to build a bridge of signal transmission between analog and digital, and a digital-to-analog converter (DAC) is an essential interface circuit that converts digital signals into analog signals. The rapid development of digital signal processing (DSP) circuits also puts forward higher requirements on the performance of converter circuits. In many typical applications, such as wired or wireless communication, video signal processing, direct digital signal synthesis, etc., the performance of the high-speed high-precision converter largely determines the performance of the entire system, especially in...

AI Technical Summary

Problems solved by technology

The adjustable current needs to be manually set through the register, which is inflexible and cannot be automatically adjusted according to the actual output power

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