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Phase domain analog-digital converter

An analog-to-digital converter and phase technology, applied in the field of microelectronics and solid-state electronics, can solve the problems of large power consumption, circuit area, and high cost, and achieve the effect of reducing power consumption and cost, and simplifying the difficulty

Active Publication Date: 2017-07-14
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Experience tells us that voltage domain analog-to-digital converters often consume relatively large power consumption and circuit area, and the cost remains high

Method used

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Embodiment Construction

[0017] The implementation of the present invention will be described in detail below in conjunction with the drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0018] Such as figure 1 As shown, a phase-domain analog-to-digital converter includes a multiplexed combiner and comparator, where:

[0019] The combiner amplifies or reduces the analog signals of the in-phase input and the quadrature input with different weights;

[0020] The comparator compares the scaled in-phase signal with the quadrature signal to obtain one bit of quantized digital information;

[0021] The scaling operation of the combiner is equivalent to dividing the complex plane into different sectors; the comparison operation of the comparator is equivalent to positioning the phase of the input signal in a certain sector of the complex plane.

[0022] At different moments, the combiner generates di...

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Abstract

The invention discloses a phase domain analog-digital converter comprising a reuse combiner and a reuse comparator, wherein the combiner performs different weights of amplification or minification on in-phase input or orthogonal input analog signals; the comparator compares the amplified or minified in-phase signal with the amplified or minified orthogonal signal to acquire quantized digital information; amplification and minification operation of the combiner is equivalent to dividing a complex plane into different sections; comparison operation of the comparator is equivalent to positioning the phase of the input signal into the section of the complex plane; the combiner respectively generates different magnifications according to a previous quantization result of the comparator at different moments, and the comparator correspondingly generates a digital quantization output for the next moment until phase quantization with specific accuracy is completed. According to the phase domain analog-digital converter provided by the invention, the active circuit is reused as much as possible in the case of fully considering characteristics of the receiver under different modulation modes and code rates, quantization difficulty of the phase information is greatly simplified, and power consumption and cost of the converter are reduced.

Description

technical field [0001] The invention belongs to the technical field of microelectronics and solid state electronics, relates to the design of radio frequency integrated circuits, in particular to a phase domain analog-to-digital converter. Background technique [0002] In recent years, the development of wireless communication technologies such as cellular, bluetooth, wifi, and zigbee has greatly enriched people's daily lives. Since the battery life of such wireless communication devices greatly affects user experience, more and more attention has been paid to reducing the power consumption of wireless receivers in the devices. [0003] In common wireless devices, the receiver amplifies the radio frequency signal and mixes it to an intermediate frequency, uses an analog-to-digital converter to convert the analog signal into digital bits, and the receiver digital demodulator performs operations on these digital bits and demodulates to obtain modulation information. Among the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M1/18
CPCH03M1/18
Inventor 董晶晶姜汉钧高绍全翁兆洋李福乐王志华
Owner TSINGHUA UNIV
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