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A wideband signal conditioning apparatus for an arbitrary waveform generator

A broadband signal, arbitrary waveform technology, applied in pulse train generators, digital function generators, instruments, etc., can solve problems such as bias, amplitude and bandwidth limited amplifier supply voltage range, gain and bandwidth

Active Publication Date: 2019-03-26
CHINA ELECTRONIS TECH INSTR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, both the DC bias and the amplitude of the waveform signal are affected by the supply voltage of the amplifier, and the offset, amplitude and bandwidth of the waveform signal are limited by the supply voltage range, gain and bandwidth of the amplifier

Method used

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  • A wideband signal conditioning apparatus for an arbitrary waveform generator
  • A wideband signal conditioning apparatus for an arbitrary waveform generator
  • A wideband signal conditioning apparatus for an arbitrary waveform generator

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Embodiment Construction

[0054] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0055] On the contrary, the invention covers any alternatives, modifications, equivalent methods and schemes within the spirit and scope of the invention as defined by the claims. Further, in order to make the public have a better understanding of the present invention, some specific details are described in detail in the detailed description of the present invention below. The present invention can be fully understood by those skilled in the art without the description of these detailed parts.

[0056] In view of the prior art, the bias addition circuit uses an operational amplifier adder to supe...

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Abstract

The invention belongs to the technical field of arbitrary waveform generation, in particular to a wideband signal conditioning device for an arbitrary waveform generator. As for that waveform amplitude, the device control the variable impedance element to adjust the gain at the input of the amplifier and the gain of the amplify respectively through the multi-channel DC DAC, so that the amplifier always operates in the wideband mode, and the channel gain is kept constant in a wide range of frequency bands. In the aspect of waveform bias, the device adjusts the supply voltage of the amplifier through a multi-channel DC DAC control power supply module to add bias to the waveform signal, so that the bias is out of the limit of the fixed supply voltage range of the amplifier. In addition, DC bias data is added to waveform data of high-speed DAC front-end to realize the superposition of two bias signals at the back-end of the device, so as to achieve the effect of enlarging the bias range.

Description

technical field [0001] The invention belongs to the technical field of arbitrary waveform generation, and in particular relates to a broadband signal conditioning device for an arbitrary waveform generator. Background technique [0002] With the development of the modern information industry, the test objects are constantly enriched, and the demand for the types of signal generation is increasing. Arbitrary waveform generator is a multi-purpose excitation source, which can provide some conventional function waveforms, complex editable waveforms, environmental analog signals, digital modulation signals, etc., and is widely used in various fields such as radar, communication, biomedicine and chip detection field. [0003] The arbitrary waveform generator has a flexible waveform editing method, and generates waveform data according to the waveform parameters such as bandwidth, amplitude and offset input by the user. The waveform data is converted by a high-speed DAC to obtain...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F1/02H03K3/64
CPCG06F1/022H03K3/64
Inventor 吴恒奎逄锦昊刘宇滕友伟
Owner CHINA ELECTRONIS TECH INSTR CO LTD
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