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PXI bus-based radio frequency real-time measurement vector analysis plug-in structural module

A real-time measurement and vector analysis technology, applied in spectrum analysis/Fourier analysis, transmission monitoring, electrical components, etc., can solve problems such as insufficiency, the maximum resolution bandwidth is only 1M, etc., achieving ingenious installation and easy scalability , compact structure

Inactive Publication Date: 2012-04-11
63963 TROOP OF THE PLA +1
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The domestic spectrum analysis module based on the PXI bus is only the AV6951 model PXI RF spectrum analyzer of China Electronics 41 Institute, but the maximum resolution bandwidth is only 1M, which cannot meet the needs of the development direction of large broadband for modern communication signals

Method used

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  • PXI bus-based radio frequency real-time measurement vector analysis plug-in structural module
  • PXI bus-based radio frequency real-time measurement vector analysis plug-in structural module

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Embodiment Construction

[0036] see figure 1 Shown is a specific embodiment of the present invention.

[0037] from figure 1 It can be seen that the present invention includes a PXI interface and an intermediate frequency signal processing circuit 1, an analog-to-digital conversion circuit 2, a receiver circuit 3, and a frequency synthesizer circuit 4 together with the peripheral card E, which combine to form a modular structure as a whole, in:

[0038]Described PXI interface and intermediate frequency signal processing circuit 1 are PCI+FPGA and DDC+FPGA framework, are provided with PCI interface chip U1, DDC chip U4, FPGA chip U2, SDRAM chip U3 and clock chip U6, and the address of PCI interface chip, The data and control ports are directly connected to the PXI bus through the plug-in card E; the HP port of the PCI interface chip U1 is directly connected to the FP port of the FPGA chip U2 in a bidirectional manner; the 7th and 9th pins of the DDC chip U4 are respectively connected to the FPGA ...

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Abstract

The invention discloses a PXI bus-based radio frequency real-time measurement vector analysis plug-in structural module, which comprises a PXI interface, a medium-frequency signal processing circuit (1), an analog to digital conversion circuit (2), a receiver circuit (3), a frequency synthesizer circuit (4) and an external plug-in card E which are combined into an integral modular structure. Quick real-time measurement and control such as real-time high-speed information process, real-time calibration and correction, system self-check, fault diagnosis and the like are provided simultaneously while radio-frequency spectrum real-time measurement, vector signal analysis, multi-display section and data processing functions are realized with an integral module design method by using an FPGA (Field Programmable Gate Array) developing tool according to an upper layer software platform and a bottom layer real-time measurement and control and data analysis and processing part; and the module has the characteristics of reasonable design, compact structure, ordered layout, skillful installation, convenience for using, reliable work and the like.

Description

technical field [0001] The invention relates to a real-time measurement vector analysis module, in particular to a PXI bus-based radio frequency real-time measurement vector analysis plug-in card structure module. Background technique [0002] Since the advent of PXI bus technology, the automatic test system based on PXI bus has been widely used and developed rapidly. such as: [0003] The 114th page of "Electronic Design Technology" published in the 10th issue of 2002 introduced the PXI-5660 vector signal analyzer newly launched by NI to measure radio frequency signals from 9kHz to 2.7GHz. The instrument includes a 2.7GHz digital downconverter, IF digitization circuit, and Spectrum Measurement Tool (SMT) for LabVIEW and LabWindow / CVI. The analyzer makes spectrum measurements by downconverting the RF signal to an IF, where it is digitally sampled through an anti-aliasing filter. After the sampled digital signal is decomposed, filtered, extracted and interpolated throu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/00G01R23/16
Inventor 吴成海张兵志秦开宇范喜全阎啸吴绍炜罗志才曹维王茜岳发义周亮刘建国金燕华孙德福王继迎王战军
Owner 63963 TROOP OF THE PLA
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