A Broadband Radio Frequency Signal Generation System

A radio frequency signal and generation system technology, applied in the field of communication, can solve the problems of not being able to directly generate radio frequency signals, not being able to generate radio frequency signals, and the flexibility of generating signals is not high, and achieve simple and flexible implementation methods, overcome clock rate mismatch, Bandwidth effect
CN108306640BActive Publication Date: 2021-05-14ROCKET FORCE UNIV OF ENG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ROCKET FORCE UNIV OF ENG
Publication Date
2021-05-14

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Abstract

The invention discloses a broadband radio frequency signal generating system, which includes a host computer, a PCIe bus, an FPGA mainboard, and a DAC board. The host computer is used to generate digital signals and transmit analog signals to the FPGA mainboard through the PCIe bus. The FPGA The main board transmits the digital signal to the DAC board through the control logic unit, and the control logic unit includes: a clock management module, a data cache module, a secondary data cache module, a data rate conversion module, and an initialization configuration logic module. The radio frequency signal generated by the present invention has large bandwidth, high precision, high integration of hardware design, less use of devices, data transmission logic overcomes the lack of clock rate mismatch between FPGA and DAC, host computer software supports rich signal styles, and the implementation method is simple and flexible , and can generate various wide-band radio frequency signals in a relatively simple way with a small volume to meet the needs of various application scenarios.
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Description

technical field

[0001] The invention belongs to the technical field of communication, and in particular relates to a broadband radio frequency signal generation system. Background technique

[0002] For the development of broadband signal sources, Rao Ruinan implemented a 0.1-5GHz comb spectrum generator by building an analog circuit and using step recovery diodes. Although this type of method can generate signals with a larger bandwidth, the signal pattern that can be generated Insufficient richness; In view of the low flexibility of analog signal generation, Yan Guanghua, Liu Yujun and others used DDS technology to propose a method of using FPGA to generate baseband digital signal data to generate signals; Qing Hao further implemented this method, using Xilinx Virtex4 FPGA and AD9957 chip as the core, designed a signal source that can generate a maximum hop speed of 200Khops / s in the 40-240MHz bandwidth range, but it can only generate frequency hopping signals, which limit...

Claims

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