Digital radio frequency mixed domain signal source based on PXI bus control

Abstract

The invention discloses a digital radio frequency mixed domain signal source based on PXI bus control. A cover plate and a shielding cavity are arranged on two sides of a shell, a digital board is arranged between the shell and the cover plate, and a radio frequency board is arranged between the shell and the shielding cavity; the radio frequency board is connected with an upper computer through a PCI interface, the upper computer sends information to the FPGA on the radio frequency board, and a soft core in the FPGA processes a PCI protocol and then bidirectionally communicates with the upper computer through the PCI protocol; the FPGA generates a radio frequency CW signal through a phase-lock loop (PLL), the radio frequency CW signal is divided into two paths after being filtered by a switch, the two paths of radio frequency signals are respectively modulated and amplified, are coupled into one path of radio frequency signal through the coupler and then are sent to the detector, and the radio frequency signal is conditioned and then is sent to an AD. On the basis of a PXI framework, analog digital signals and radio frequency signals are integrated, and signal output of a mixed domain is achieved.

Description

technical field [0001] The invention belongs to the field of electronic information, and in particular relates to a digital radio frequency mixed domain signal source based on PXI bus control. Background technique [0002] Due to the characteristics of large bandwidth, low delay and high efficiency of PXI bus transmission control, the demand for test system equipment based on PXI bus architecture is increasing, and PXI modules are emerging in an endless stream. According to the functional division of modules, there are bus communication modules, digital signal modules, The main types of modules such as radio frequency signal modules. [0003] The current test system pursues generalization, unification, and multi-function. These modules are often single-function. If it is a large-scale and complex system selection, the user must be equipped with all the above modules. Moreover, there are few integrated digital radio frequency signal sources in the existing signal sources, an...

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Problems solved by technology

[0003] The current test system pursues generalization, unification, and multi-function. These modules are often single-function. If a large-scale and complex system is selected, the user must be equipped with all the above modules.

Moreover, there are few integrated digital radio frequency signal sources in the existing signal sources, and at the same time, the signals controlled by the PXI bus are single and of low quality

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