A reconfigurable Sigma-Delta modulator
A modulator and quantizer technology, applied in the direction of analog conversion, electrical components, code conversion, etc., can solve the problem of not making full use of the advantages of the continuous time sigma-delta modulator circuit architecture, reducing hardware cost and power consumption, and cannot further improve Integration and other issues
Active Publication Date: 2019-05-28
GUANGZHOU TRANSA SEMI INFORMATION TECH CO LTD +1
View PDF5 Cites 6 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Therefore, more and more radio frequency receivers are used to realize the analog-to-digital conversion function, but the current related technologies have not fully utilized the structural advantages of the continuous-time sigma-delta modulator circuit, and cannot further improve integration, reduce hardware costs and power consumption
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.
[0021] see figure 1 , which shows a general architecture of a radio frequency receiver provided by an embodiment of the present invention, the architecture can be universally applied to radio frequency receiver devices, and the architecture may include a plurality of Components, these components in turn include low noise amplifier (LNA, Low Noise Amplifier), mixer, analog filter, programmable variable gain amplifier (VGA, Variable Gain Amplifiers), analog-to-digital converter (ADC, Analog-to -Digital Converter) and digital filters. Among these parts, the mixer can move the radio frequency signal amplified by the low noise amplifier according to the frequency of the local oscillator signal (LO, Local Oscillator). Generally speaking, if the frequency of the mixer output signal...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The embodiment of the invention discloses a reconfigurable Sigma-Delta modulator, which can comprise an input resistor, a feedforward path, a loop filter comprising multiple stages of operational amplifiers connected in series, a 5bit quantizer of an SAR ADC structure and a feedback loop composed of a plurality of DACs. Wherein the input resistor is a resistance-adjustable resistor, one end of theinput resistor is connected with an input signal, and the other end of the input resistor is connected with the input end of the loop filter; The feed-forward path is in bridge connection with the output section of the first-stage operational amplifier of the loop filter and the input end of the last-stage operational amplifier of the loop filter; The input end of the quantizer is connected withthe output end of the final stage operational amplifier of the loop filter, and digital signals are output through the output end; Wherein the number of the DACs in the feedback loop corresponds to the number of the operational amplifiers in the loop filter, the input ends of the DACs in the feedback loop are connected with the output end of the quantizer, and the output ends of the DACs in the feedback loop are connected with the input ends of the corresponding operational amplifiers in the loop filter respectively.
Description
technical field [0001] The invention relates to wireless communication technology, in particular to a reconfigurable Sigma-Delta modulator. Background technique [0002] With the development of wireless communication technology, the requirements for chip integration, power consumption and cost are getting higher and higher. For the RF receiver in the wireless communication system architecture, in order to improve integration, reduce power consumption and design cost, the development of related technologies of wireless receivers has the following trends: First, a large number of signal processing functions are placed in digital Second, in order to reduce hardware cost and power consumption, integrate analog circuits and try to realize multiple functions in a single circuit; finally, for multi-mode communication systems, the reconfigurable design of circuits is a In order to save hardware overhead and optimize energy efficiency, in order to meet different application scenario...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H03M3/00
Inventor 郑雷张任伟李艳辉
Owner GUANGZHOU TRANSA SEMI INFORMATION TECH CO LTD