Vector signal source plug-in card-type structural module based on PCI bus
A vector signal source and structure module technology, applied in the field of vector signal source plug-in card structure modules, can solve the problems of difficult popularization and application, long waveform calculation and download time, etc.
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[0025] See figure 1 Shown are specific embodiments 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 card E, combined to form a modular structure as a whole. among them:
[0027] The PXI interface circuit 1 is a PCI+FPGA architecture, and is provided with a PCI interface chip U1, an FPGA chip U2 and a local clock chip U3, and the address, data and control ports of U1 are directly connected to the PXI bus via the plug-in card E; The HPI port is directly connected to the HPI port of the DSP chip U5 in the baseband signal generating circuit 2; and U2 is directly connected to the FIFO chip U6 in the baseband signal generating circuit 2 in two directions.
[0028] The ...
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