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Vector signal source plug-in card-type structural module based on PCI extension for instrumentation (PXI) bus

A vector signal source and structural module technology, applied in the direction of pulse processing, electrical components, single output arrangement, etc., can solve the problems of difficult popularization and application, long waveform calculation and download time, etc.

Inactive Publication Date: 2012-03-21
63963 TROOP OF THE PLA +1
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Moreover, the existing PXI vector source modules all use arbitrary waveform generation, which takes a long time to calculate and download the waveform, and the length of waveform playback is limited by the size of the onboard memory, making it difficult to popularize and apply

Method used

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  • Vector signal source plug-in card-type structural module based on PCI extension for instrumentation (PXI) bus
  • Vector signal source plug-in card-type structural module based on PCI extension for instrumentation (PXI) bus

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Embodiment Construction

[0025] see figure 1 Shown is a specific embodiment of the present invention.

[0026] From figure 1 It can be seen that the present invention includes PXI interface circuit 1, baseband signal generation circuit 2, digital-to-analog conversion circuit 3, frequency synthesis circuit 4, IQ quadrature vector modulation circuit 5 and ALC control and vector signal source output circuit 6 together with peripherals The plug-in cards E are combined to form a modular structure as a whole. in:

[0027] Described PXI interface circuit 1 is PCI+FPGA structure, is provided with PCI interface chip U1, FPGA chip U2 and local clock chip U3, and the address of U1, data and control port are directly connected with PXI bus through plug-in card E; The HPI port is directly connected to the HPI port of the DSP chip U5 in the baseband signal generation circuit 2 ; and U2 is directly connected to the FIFO chip U6 in the baseband signal generation circuit 2 in a bidirectional manner.

[0028] The b...

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Abstract

The invention relates to a vector signal source plug-in card-type structural module based on a PCI extension for instrumentation (PXI) bus, which comprises a PXI interface circuit 1, a baseband signal generating circuit 2, a digital-to-analogue conversion circuit 3, a frequency synthesis circuit 4, an in-phase quadrature (IQ) vector modulation circuit 5 and an adaptive logic circuit (ALC) control and vector signal source output circuit 6 which are combined with an external plug-in card E to form a modular structural integrity. According to the software radio technology and the modular structural design principle of an integrated circuit, a mathematical model is established; a microwave and a high-speed digital processing chip are adopted to set required vector signal source frequency, amplitude and power to perform real-time calculation to generate modulation output. Technologically, the optimal shielding, grounding, decoupling, filtering and leakage prevention optimization design is adopted to realize the characteristics of reasonable layout, compact structure, skillful installation, wide expansibility, high adaptability, high reliability and the like, and the requirements of automatic testing and analysis of a traditional digital communication system are completely met, and the need of the development of the communication technology is adapted.

Description

technical field [0001] The invention relates to a signal source module, in particular to a vector signal source plug-in structure module based on PXI bus. Background technique [0002] Since the advent of PXI bus technology, the automatic test system based on PXI bus has been widely developed. The PXI bus vector signal source also appeared and obtained a large number of applications. There is no such product in China at present. Abroad mainly consists of NI's PXI-5670 vector signal generator and Aeroflex's PXI3020 radio frequency signal generator. [0003] According to the description on the NI official website, the NI PXI-5670 is a modular 2.7GHz RF vector signal generator whose power and flexibility can meet the needs of product development from design to manufacturing. NI PXI-5670 can perform arbitrary waveform generation with true 16-bit resolution at 100MS / s speed, 512MB memory and 20MHz real-time bandwidth. The PXI-5670 can generate custom and standard modulation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K5/13H03K5/131
Inventor 吴成海肖顺旺秦开宇郝晰辉吴绍炜罗志才何明利曹维韩尧吴延威周亮王继迎唐博刘钢锋金燕华
Owner 63963 TROOP OF THE PLA
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