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Device for generating analogue signals and associated use

A technology for generating analog signals and generating equipment, which is applied to the equipment for generating analog signals and its related applications, the fifth generation mobile phone standard field, and can solve problems such as large errors

Inactive Publication Date: 2018-07-17
THALES SA +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this system uses zero-order integration, and the resulting error is quite large relative to the first-order integration

Method used

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  • Device for generating analogue signals and associated use
  • Device for generating analogue signals and associated use
  • Device for generating analogue signals and associated use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] figure 1 An exemplary embodiment of an analog signal generating device 10 according to the invention is shown.

[0030] Such a device 10 for generating an arbitrary signal constructs any analog signal by digitally encoding the temporal variation of the desired signal. The device comprises a digital part (not fully shown) which realizes the digital encoding of a signal which generates a binary string and which drives a current pump 12 such that an analog signal is constructed by time-integrating the switching current in the capacitive load. The digital part includes a module 11 for calculating a noise-shaping digital code, making it possible to extract part of the quantization noise from the frequency band of the generated analog signal and thereby improve its quality while maintaining a limited number of bits. This module 11 corresponds to the last stage of the digital part. The module 11 for calculating the noise-shaping digital code is connected in series with the c...

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Abstract

The present invention concerns a device (10) for generating analogue signals comprising a current pump (12) controlled by a control code (cmd) generated by a module (11) for calculating the digital code with noise-shaping. The calculation module (11) receives, as input, a digital signal (In) representative of the analogue signal to be generated and comprises at least one quantiser and a stage (115) for compensating for a quantisation error. The current pump (12) comprises two groups (G1, G2) of at least one electric current generator (51) and two groups (C1, C2) of at least one switching means(52), said switching means being controlled by the control signal and transmitting the electric currents between the electric current generators and the inputs of a differential amplifier (55) havinga predominantly capacitive input impedance connected in series between said two groups of switching means.

Description

technical field [0001] The invention relates to the field of signal generation. More specifically, the present invention relates to a device for generating analog signals and its related applications. [0002] A particular application of the device according to the invention relates to the transmission of analog signals in the context of software defined radios, and more specifically for the fifth generation mobile telephony standard (5G). [0003] Generally speaking, the signal generating device can be applied in any field where analog signal generation is realized based on digital codes (for example, radar signal generation, interference signal generation, telecommunication signal generation, interleaved signal generation, etc.). Background technique [0004] Until now, radio signals were generated in baseband in the digital domain, converted to the analog domain, and then boosted to radio frequency by multiplying with a carrier signal going to an amplifier. The disadvan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K4/02H03M3/04H03M3/00H03M1/74
CPCH03K4/023H03M1/742H03M3/502H03M1/1245
Inventor P·加雷克R·蒙蒂尼F·里韦Y·德瓦尔Y·韦拉克
Owner THALES SA
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