Analog digital A/D converting circuit structure used for broad band communication

An analog-to-digital, conversion circuit technology, applied in the direction of analog-to-digital converter, analog-to-digital conversion, code conversion, etc., can solve problems such as insufficient dynamic range and spikes, and achieve the effect of simple structure and good processing capacity

Inactive Publication Date: 2008-07-16
RFDOT MICROELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology allows for better handling smaller or larger data streams while maintaining their quality compared to traditional methods like averaging over all possible combinations.

Problems solved by technology

The technical problem addressed by these inventors relates to improving the performance of converters used for transmitting wide bandwidths like cables due to their limitations on input frequencies that limit them' ability to accurately convert analog signals into digital data.

Method used

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  • Analog digital A/D converting circuit structure used for broad band communication
  • Analog digital A/D converting circuit structure used for broad band communication

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Embodiment Construction

[0026] Below the present invention will be further described in conjunction with the embodiment in the accompanying drawing:

[0027] As shown in FIG. 1 : the circuit diagram in FIG. 1 includes a nonlinear amplifier 11 , an analog-to-digital converter ADC12 and an inverse conversion circuit 13 . The output end of the nonlinear amplifier 11 is connected to the input end of the analog-to-digital converter ADC12; the output end of the analog-to-digital converter ADC12 is connected to the input end of the inverse conversion circuit 13.

[0028] The analog input signal to be processed is first sent to the nonlinear amplifier 11 . The nonlinear amplifier 11 amplifies the input signal according to the nonlinear output function f(x). The amplified signal is sent to the analog-to-digital converter ADC12. The analog-to-digital converter ADC12 digitizes this signal and then sends it to the inverse conversion circuit 13 . The output function of the inverse transformation circuit 13 is ...

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PUM

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Abstract

The invention relates to an A/D conversion circuit structure used in broadband communication, and is characterized in that: the output end of a nonlinear amplifier is connected with the input end of an analog-digital converter (ADC); the ADC is connected with an inverse transform circuit; the nonlinear amplifier comprises two resistors, an amplifier and two diodes. The output function of the nonlinear amplifier is characterized in that: the amplifier has more gain on high-probability analog input signal and less gain on low-probability analog input signal. On the basis of no pinch off of high-amplitude signal and no adding of an extra circuit, the invention has outstanding processing capacity of low-amplitude signal; the combined action of the amplifier and the ADC ensures that A/D conversion inhibits both the minor quantized noise of low-amplitude signal (high probability) and the major quantized noise of high-amplitude signal (low probability); then, the signal received by the ADC can be processed by the inverse transform circuit to maintain the linear relation of input and output.

Description

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Claims

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Application Information

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Owner RFDOT MICROELECTRONICS
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