A fpga-based microwave switch pulse modulation control device

Abstract

The invention relates to an FPGA-based microwave switch pulse modulation control device and method. The device comprises an FPGA time sequence control module, an FPGA signal processing calculation module, an FPGA parallel / serial conversion module, a high-speed serial differential output module and an output interface plugin, wherein the FPGA time sequence control module outputs parallel signals ofmultiple paths of pulses; the FPGA signal processing calculation module calculates and sets parameters of the FPGA parallel / serial conversion module according to the number, pulse width, interval anddelay data parameters of each path of pulses; the FPGA parallel / serial conversion module outputs a high-speed serial differential delay synchronization pulse signal; and the differential delay synchronization pulse signal is output through the output interface plugin. According to the device and method, the on and off of microwave switches are controlled by adoption of FPGA high-speed serial technology-based output pulse width and period number adjustable control pulses, and digital adjustment is carried out on the delay of multiple paths of output control pulses to realize the delay synchronization of signals, so that the pulse modulation for input radio frequency / microwave signals is realized.

Description

technical field [0001] The invention belongs to the technical field of communication and information systems, and in particular relates to an FPGA-based microwave switch pulse modulation control device. Background technique [0002] Microwave switches can provide broadband switching functions for radio frequency / microwave signals, and then modulate microwave signals as needed to output pulse trains. Microwave high-speed switches have the characteristics of high bandwidth and high speed, and are widely used in electronic systems such as communication and radar. In the prior art, the control device of the microwave high-speed switch has the following problems: [0003] (1) The control problem of different types of microwave switches: Due to the high bandwidth and high speed characteristics of microwave switches, the pulse width output by traditional control devices is at the TTL level of seconds, milliseconds, and microseconds (transistor-transistor Logic level) pulses are o...

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Problems solved by technology

[0003] (1) The control problem of different types of microwave switches: Due to the high bandwidth and high speed characteristics of microwave switches, the pulse width output by traditional control devices is at the TTL level of seconds, milliseconds, and microseconds (transistor-transistor Logic level) pulses are obviously unable to control the on-off of high-speed microwave switches. At the same time, based on different types of microwave switches, the switching time is different. The on-off of microwave switches is related to the voltage amplitude, pulse width, and pulse Interval matters

[0004] (2) The problem of multi-channel delay synchronization: that is, the precise synchronization between the triggering of the control pulse that controls the on-off of the microwave switch and the input microwave signal, that is, at the same time as the microwave input, the trigger control pulse controls the microwave switch to be turned on

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