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Ultra-wideband time domain pulse signal systems have been widely used in many key fields. This phenomenon has attracted scholars' great attention to the development of high-stability, high-power peak pulse signal sources, and has made it a focus topic worthy of in-depth study.
Ultra-wideband time-domain pulse signal systems play a key role in many fields such as UWB pulse radar, electromagnetic attack, and biomedicine.
In the field of UWB pulse radar, this system ensures high-precision detection and positioning functions.
In the field of military radar monitoring, such pulse signals are used to locate targets more accurately.
In the biomedical world, there is a special technology that is applied to medical equipment, such as equipment used for early detection of certain diseases. This technology may be used.
The scope of applications in these fields continues to expand, prompting the research and development of pulse signal sources to continue to move towards higher performance.
With the development of technology, various fields have put forward higher requirements for the performance of pulse signal sources.
In some advanced electromagnetic interference defense devices, pulse waves must be used to quickly and effectively interfere with intrusion signals, which requires them to have characteristics such as high power peaks.
The avalanche transistor has high-speed avalanche switching characteristics, and its collector can withstand large currents. Therefore, based on this characteristic, the development of Marx pulse generator has become the main trend in pulse source development.
Scholars from various countries continue to study Marx circuit topology.
After studying the series and parallel connection of avalanche units, the American scientific research team has successfully increased the peak amplitude and peak power of the waveform output by the pulse source, which can usually reach tens of kilowatts.
This improvement allows Marx pulse generators to be initially used in some fields.
But Marx pulse generators also face challenges.
The application demand for the peak power of pulse signals continues to increase, causing the peak power increase of the Marx pulse signal source on a single output to face a limit.
In some applications that urgently require high power, the improvement of equipment performance has been hindered, which in turn restricts the further development potential of related technologies in this field.
Pulse source power synthesis technology is the key to solving the limitation of Marx circuit pulse source output peak power.
Among these methods, lines, transmission line transformers and pulse synchronous superposition constitute the main ways of power synthesis.
In the research and development of some high-end pulse signal generators, these power superposition technologies have been used to successfully increase the peak output power of the pulse generator to the megawatt level.
This level of progress has enabled all-solid-state circuits to achieve a major breakthrough in peak power, which is enough to meet the needs of more and more complex application scenarios.
Different power synthesis methods have different advantages, disadvantages and scope of application.
Transmission line transformers are more suitable when handling high-power transmission, but integration in small equipment may face challenges; pulse synchronization superposition has advantages in signal integration due to its unique principle, but it requires a high degree of signal synchronization.
We must make a comprehensive summary of this all-solid-state Marx pulse signal source based on avalanche triode technology from multiple angles.
The basic principles include the working mechanisms of avalanche transistors and the interaction between these mechanisms and circuit structures.
The theoretical calculation formula covers the calculation of pulse width, peak power and other parameters.
In the design simulation stage, attention must be paid to the parameter configuration of circuit components. For example, in a simulation design project, only by accurately selecting the type of avalanche transistor can the accuracy of circuit simulation be ensured.
Experimental testing is a practical verification of theory and simulation.
During the implementation process, you may encounter several difficulties. For example, interference factors in the experimental environment may affect the test results.
To solve these problems, it is necessary to master a series of key technologies, such as improving the layout of experimental circuits.
The generation of pulse source jitter will affect the quality of the pulse signal.
The cause of jitter may be noise or instability of internal circuit components.
In some cases where the circuit shielding effect is not good, external interference may cause jitter in the pulse source.
In order to control jitter, we have adopted various methods, such as improving the circuit layout to reduce noise interference and using a high-precision clock source to ensure the stability of the pulse generation rhythm.
The stability of the pulse signal source is very important for peak power synthesis.
The stability of the pulse signal is poor. During the power synthesis process, unsatisfactory synthesis effects are prone to occur, such as insufficient power superposition, etc., so that the expected high peak power output cannot be achieved.
This pulse source has high stability, fast rising edge and narrow half-peak pulse width on the output, and its development process covers many fields.
Within the pulse source, the sub-module circuits have been optimized and innovated, such as improving the signal amplification circuit to improve the quality of the signal.
During the experimental testing and analysis phase, we must accurately collect various parameters, and at the same time analyze the data in detail to discover possible problems.
When measuring key parameters such as the rising edge time of this pulse source being shorter than 200 picoseconds, the jitter of the trigger signal being less than 20 picoseconds, and the repetition frequency reaching 20 kilohertz, the accuracy of the measurement must be guaranteed without any error.
Through comparative analysis, we chose the experimental method of power synthesis using transmission line transformers and power dividers. After research, we decided to use two power dividers, first split and then combine, to develop an all-solid-state pulse signal source.
This program successfully developed an all-solid-state pulse signal source with an output power reaching a peak value of 0.8MW.
The simulation design and development of a broadband power divider in the 0.5GHz to 2.5GHz frequency band was completed. This achievement laid a solid foundation for the practical application of pulse signal sources.
What are your insights into the potential of this peak power pulse signal source for future high-tech applications?