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Phase quantization analog-to-digital converter circuit with addition weight calibration

An analog-to-digital converter and phase quantization technology, applied in the direction of analog-to-digital converter, analog/digital conversion calibration/test, etc., can solve the problem of adding weight imbalance, etc., to eliminate phase errors, improve output characteristics, and improve working performance. Effect

Active Publication Date: 2015-11-18
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to propose a phase quantization analog-to-digital converter circuit with addition weight calibration to solve the problem of unbalanced addition weight in the existing phase quantization analog-to-digital converter circuit

Method used

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  • Phase quantization analog-to-digital converter circuit with addition weight calibration
  • Phase quantization analog-to-digital converter circuit with addition weight calibration
  • Phase quantization analog-to-digital converter circuit with addition weight calibration

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Embodiment Construction

[0015] In order to make the purpose, technical solution and application superiority of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0016] combine figure 2 In the existing phase quantization analog-to-digital converter circuit shown, after the IQ input signal passes through the adder module 1 , multiple amplitude signals carrying different phase information will be generated, which determine the output result of the comparator module 3 . When the phase quantization accuracy increases, more adder modules 1 are needed to extract the phase information of the input signal, and there are differences in the corresponding amplitude information between different phase information. If this difference is not calibrated, it will be directly sent to the In the comparator module 1, the duty ratio of the output signal of the comparator module 3 must be r...

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Abstract

The invention discloses a phase quantization analog-to-digital converter circuit with addition weight calibration, which relates to a micro-circuit structure, and especially relates to an analog-to-digital converter circuit for realizing phase quantization. Aiming at the problems that an adder module of a traditional circuit is nonlinear in phase weighting and the amplitude weights between different phases are different, the invention provides a novel circuit architecture: an addition weight calibration module is added on the basis of the traditional circuit, and the module comprises an error voltage detection sub-module and a quiescent current regulation sub-module. The addition weight calibration module detects the output voltage of an adder, controls the operating state of the adder module and realizes the addition weight calibration. The phase quantization analog-to-digital converter circuit with the addition weight calibration provided by the invention can eliminate the phase error induced by the nonlinearity of the adder module and the difference of amplitude weight between different phases, improve the circuit performance, save research and development time and cost and has a good application prospect.

Description

technical field [0001] The invention relates to a microcircuit structure, in particular to an analog-to-digital converter circuit capable of realizing phase quantization and eliminating quantization errors introduced by amplitude deviation through calibration of additive weights. Background technique [0002] Electronic countermeasure technology plays an increasingly important role in modern warfare, and has become a key factor in determining battlefield control. At the same time, with the rapid development of radar technology, its working frequency band is no longer a single band, but includes the entire microwave band. Instead of a simple pulse system. Therefore, there are newer and higher requirements for radar countermeasure technology. In the process of developing new radar electronic countermeasure technology, digital radio frequency memory (DRFM) technology is born, using high-speed sampling and digital storage as its technical basis, and has the ability to control r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M1/10H03M1/12
Inventor 邹振杰李斌刘林海田素雷陈明辉廖春连杜克明
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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