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A signal generator with ultra-low harmonic distortion

A signal generator and harmonic distortion technology, applied in the field of signal processing, can solve problems such as output signal harmonic distortion

Active Publication Date: 2021-07-06
SHENZHEN CITY SIGLENT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main technical problem to be solved in this application is how to overcome the harmonic distortion problem of the output signal existing in the existing signal generator

Method used

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  • A signal generator with ultra-low harmonic distortion
  • A signal generator with ultra-low harmonic distortion
  • A signal generator with ultra-low harmonic distortion

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Experimental program
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Embodiment 1

[0029] Please refer to figure 1 In this embodiment, a signal generator with ultra-low harmonic distortion is disclosed. The signal generator 1 includes a harmonic compensation unit 12, a control processing unit 11, a waveform generation unit 13 and an output conditioning unit 14, which will be described separately below.

[0030] The harmonic compensation unit 12 is configured with harmonic calibration data, and the harmonic calibration data is used to compensate the harmonics of the output signal of the signal generator, so that the output waveform has ultra-low harmonic distortion. How to configure and form the harmonic calibration data will be specifically described in the second embodiment below.

[0031] The control processing unit 11 has data processing capability, is connected with the harmonic compensation unit 12, and is mainly used for generating harmonic compensation data of a single tone signal according to the harmonic calibration data and preset parameters in the...

Embodiment 2

[0055] Please refer to image 3 In this embodiment, a calibration system for a signal generator is provided, and the calibration system 2 includes a signal generator 21 , a signal analyzer 22 and a calibration control device 23 .

[0056] The signal generator 21 is used to output output signals of various frequencies and amplitudes, and the structure and specific functions can refer to the signal generator 1 in the first embodiment.

[0057] The signal analyzer 22 is connected to the signal generator 21 through a coaxial cable for signal analysis of the coaxial signal output by the signal generator to obtain the amplitude of the single tone signal and the amplitude of each harmonic in the coaxial signal . The signal analyzer 22 can use equipment such as a spectrum analyzer, which can measure the power (amplitude), frequency, bandwidth, etc. of the signal, and can even perform various modulation and demodulation analyzes on the signal.

[0058] The calibration control device ...

Embodiment 3

[0085] On the basis of the calibration method for the signal generator disclosed in the second embodiment, this embodiment discloses a calibration control device.

[0086] Please refer to Image 6 , the calibration control device 4 mainly includes a memory 41 and a processor 42 . Wherein, the memory 41 is used as a computer-readable storage medium for storing a program, and the program is the program code corresponding to the calibration method S100-S300 for the signal generator in the second embodiment.

[0087] The processor 42 is connected with the memory 41 and is used to execute the programs stored in the memory 41 to realize the calibration method for the signal generator. For the functions implemented by the processor 42, reference may be made to the calibration control device 23 in the second embodiment, which will not be described in detail here.

[0088] Those skilled in the art can understand that the technical solution in this embodiment superimposes the correspo...

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Abstract

A signal generator with ultra-low harmonic distortion, which includes a harmonic compensation unit, a control processing unit, a waveform generation unit and an output conditioning unit, wherein the harmonic compensation unit is configured with harmonic calibration data; the control processing unit is used for Harmonic calibration data and preset parameters generate harmonic compensation data of a single-tone signal; the waveform generation unit is used to generate the single-tone signal corresponding to the preset parameters and each harmonic signal corresponding to the harmonic compensation data, and through the Each harmonic signal is superimposed on the tone signal to obtain a compensation signal; the output conditioning unit is used to perform waveform conditioning on the compensation signal to generate an output signal. The technical solution of this application provides a harmonic compensation mechanism for the signal generator, which can effectively avoid the serious signal distortion of the signal generator under the output of high-frequency large signals, effectively overcome the harmonic distortion problem of the output signal, and make the signal generator have High practical value.

Description

technical field [0001] The invention relates to the technical field of signal processing, in particular to a signal generator with ultra-low harmonic distortion. Background technique [0002] A signal generator is a device that can provide electrical signals of various frequencies, waveforms and output levels. When measuring the amplitude characteristics, frequency characteristics, transmission characteristics and other electrical parameters of various telecommunication systems or telecommunication equipment, as well as measuring a certain When testing the characteristics and parameters of components, the signal generator is often used as a signal source or excitation source for testing. [0003] The signal generator of direct digital frequency synthesis adopts direct digital frequency synthesis technology (Direct Digital Synthesis, referred to as DDS), which can improve the frequency stability and accuracy of the signal generator to the same level as the reference frequency...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R1/28G01R35/00
CPCG01R1/28G01R35/005
Inventor 林辉浪方鹏举苏强
Owner SHENZHEN CITY SIGLENT TECH