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A vector signal analysis device and method

A vector signal and analysis device technology, applied in the field of testing, can solve the problems of miniaturization and flexibility of test equipment and test systems, inability to perform comprehensive and accurate signal analysis, and inability to make full use of original signal data, etc., to achieve light weight , low cost, small volume effect

Active Publication Date: 2020-06-16
THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] When the vector signal analysis device based on the desktop instrument structure is used for on-site testing in the fields of radar, electronic countermeasures, shipboard equipment, vehicle equipment, etc., due to the limitations of system volume and space, it cannot meet the requirements of test equipment and test systems in various fields. Demand for miniaturization, flexibility, etc.
At the same time, the hardware platform and software have a one-to-one relationship, and the reusability of both hardware and software is poor.
[0006] At the same time, the existing vector signal analysis method performs quadrature demodulation, IQ transformation and fractional multiple decimation filtering in the programmable logic device, and can perform vector analysis in the modulation domain, but cannot make full use of the original signal data collected, and cannot perform comprehensive Accurate Signal Analysis

Method used

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  • A vector signal analysis device and method
  • A vector signal analysis device and method
  • A vector signal analysis device and method

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Embodiment 1

[0036] Such as figure 1 As shown, a vector signal analysis device includes a radio frequency conversion unit, a local oscillator unit and an intermediate frequency sampling unit, and is configured with host computer software; the local oscillator unit, the radio frequency conversion unit, and the intermediate frequency sampling unit are connected in sequence through cables; the intermediate frequency sampling unit and PC software communication connection; RF frequency conversion unit (such as figure 2 shown) includes a power protection circuit, a fixed attenuator, a first selection switch, a second selection switch, a third selection switch, a fourth selection switch, a fifth selection switch, a sixth selection switch, a first amplifier, a second amplifier, Third amplifier, fourth amplifier, first programmable attenuator, second programmable attenuator, first mixer, second mixer, third mixer, first bandpass filter, second bandpass filter and the third band-pass filter; power...

Embodiment 2

[0046] On the basis of the foregoing embodiments, the present invention also mentions a vector signal analysis method, comprising the following steps:

[0047] Step 1: The local oscillator unit first selects the internal and external reference signals through the analog switch. The internal reference signal is provided by a 10MHz crystal oscillator, and the external reference signal is input by an external 10MHz signal; then the reference signal selected by the analog switch is provided to the phase detector as a 100MHz The reference of the crystal oscillator, the 100MHz signal is divided into five ways after passing through the power divider: the first way passes through the first 6dB attenuator and the first 10 frequency divider, and the output 10MHz signal is used as the phase detector input of the phase detector, and the input Compared with the reference signal of the 100MHz signal, the phase-locking of the 100MHz signal is completed; the second path passes through the seco...

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Abstract

The invention discloses a vector signal analysis device and method, belonging to the technical field of testing. The vector signal analysis device based on the modular instrument has the characteristics of small size, light weight, low cost, and easy system expansion, and the hardware module and software are independent of each other, which improves the reusability of the hardware module and the portability of the software. At the same time, the vector signal analysis method can comprehensively analyze the collected data from multiple angles in the time domain, frequency domain, and modulation domain, thereby improving the accuracy of signal analysis.

Description

technical field [0001] The invention belongs to the technical field of testing, and in particular relates to a vector signal analysis device and method. Background technique [0002] Compared with traditional analog signals, digital modulation signals have the advantages of strong anti-interference, high bandwidth efficiency, and good confidentiality. They have become the main form of current signal communication and are widely used in radar, satellite communication, and electronic countermeasures. Vector analysis of digitally modulated signals becomes a key issue. Vector signal analysis (VSA) can quickly and accurately measure complex modulated signals, and is more suitable for analyzing burst signals and modulated signals than spectrum analysis. [0003] In the field of test and measurement, the vector signal analysis device mostly adopts the structure of a desktop instrument and is implemented in the form of a hardware platform + resident software. The hardware platform ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20
CPCG06F30/20
Inventor 刘磊张光山付存文李龙彭子健
Owner THE 41ST INST OF CHINA ELECTRONICS TECH GRP