Arbitrary waveform generator

An arbitrary waveform and generator technology, applied in the direction of digital function generator, electric pulse generator circuit, etc., can solve the problems of high cost, complex design system structure, complex hardware, etc., and achieve fast conversion speed, simple hardware circuit, frequency High stability and high resolution effects

Inactive Publication Date: 2014-05-21
孙仁
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  • Abstract
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Problems solved by technology

However, due to the use of a large number of frequency multiplication, frequency division, frequency mixing and filtering links, the hardware is complex, resulting in a more complex design system structure and higher cost

Method used

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  • Arbitrary waveform generator

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Embodiment Construction

[0010] As shown in the figure, the present invention includes FPGA, power supply module, crystal oscillator, communication module, first D / A conversion module, second D / A conversion module, low-pass filter, variable gain amplifier, signal conditioning circuit, FPGA port They are respectively connected to the power supply module port, the crystal oscillator port, the communication module port, the first D / A conversion module port and the second D / A conversion module port, the communication module port is connected to the PC port, the first D / A conversion module, the low A pass filter, a relay, a variable gain amplifier, and a signal conditioning circuit are connected in sequence, and the ports of the second D / A conversion module are respectively connected to the variable gain amplifier port and the signal conditioning circuit port.

[0011] The communication module is a USB module. The transmission speed of the USB interface is fast, the operation is simple, it supports mul...

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Abstract

The invention belongs to the technical field of generators and particularly relates to an arbitrary waveform generator. The arbitrary waveform generator, simple in structure and low in cost, comprises an FPGA (Field Programmable Gate Array), a power module, a crystal oscillator, a communication module, a first D / A conversion module, a second D / A conversion module, a low pass filter, a variable gain amplifier and a signal conditioning circuit. The structural key points of the arbitrary waveform generator are that ports of the FPGA are respectively connected with ports of the power module, the crystal oscillator, the communication module, the first D / A conversion module and the second D / A conversion module; the port of the communication module is connected with the port of a PC machine; the first D / A conversion module, the low pass filter, the relay, the variable gain amplifier and the signal conditioning circuit are connected in sequence; and the ports of the second D / A conversion module are respectively connected with the port of the variable gain amplifier and the port of the signal conditioning circuit.

Description

technical field [0001] The invention belongs to the technical field of generators, in particular to an arbitrary waveform generator. Background technique [0002] The sine wave of the existing arbitrary waveform generator is generated by a dedicated DDS integrated chip AD9850. The sine wave is generated by a comparator to obtain a square wave, and the square wave is obtained by an integrator to obtain a triangular wave. Other arbitrary waves and system control modules are programmed in the FPGA. This method can realize high-frequency sine waves, is easy to design, and has low phase noise. However, due to the use of a large number of frequency multiplication, frequency division, frequency mixing and filtering links, the hardware is complex, which leads to a relatively complex structure and high cost of the design system. Contents of the invention [0003] The present invention aims at the above problems and provides an arbitrary waveform generator with simple structure and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K3/02G06F1/02
Inventor 孙仁滕学良樊建平
Owner 孙仁
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