Three-stage stacked marx high power microwave pulse generator

Abstract

The utility model relates to high power microwave technical field, concretely relates to a kind of three-stage stacked Marx high power microwave pulse generating device, including three-stage stacked Marx generator, pulse high pressure modulator module, microwave generator module and microwave transmitter module, three-stage stacked Marx generator includes primary stacked generator, secondary stacked generator and three-stage stacked generator, primary stacked generator, secondary stacked generator and three-stage stacked generator are stacked together in order from top to bottom, and primary stacked generator, secondary stacked generator and three-stage stacked generator are all by marx generator and insulating component constitute, marx generator is installed in insulating component, obtains the effect that high energy density, wide pulse width, giga-watt microwave output are realized by stratification design and optimization capacitor arrangement, while reducing the volume of device.

Description

Technical Field

[0001] This utility model relates to the field of high-power microwave technology, and in particular to a three-stage stacked Marx high-power microwave pulse generator. Background Technology

[0002] Currently, traditional Marx generators achieve high-voltage pulse output through parallel charging and series discharging, but they have the following problems: 1. Insufficient energy density: The output voltage of a single-stage Marx generator is limited by the voltage rating of the capacitor, making it difficult to meet the requirements for gigawatt-level microwave generation; 2. Large size: The multi-stage series structure results in a large size and weight of the device, limiting its mobile deployment capability; 3. Limited pulse width: Traditional Marx generators have a narrow output pulse width, making it difficult to adapt to the requirements of wide-pulse-width microwave sources.

[0003] In existing technologies, all-solid-state Marx modulators improve stability through IGBT series control, but the contradiction between energy density and volume remains unresolved.

[0004] Therefore, there is an urgent need for a high-energy-density, compact, high-power microwave pulse generator. Utility Model Content

[0005] The purpose of this invention is to provide a three-stage stacked Marx high-power microwave pulse generator, which solves the problem of the contradiction between energy density and volume in the prior art.

[0006] To achieve the above objectives, this invention provides a three-stage stacked Marx high-power microwave pulse generator.

[0007] It includes a three-stage stacked Marx generator for storing energy in stages and generating high-voltage pulses;

[0008] A pulse high-voltage modulator module, connected to the three-stage stacked generator, is used to superimpose and modulate high-voltage pulses;

[0009] The microwave generator module receives modulated high-voltage pulses and converts them into gigawatt-level microwaves via a solid-state power amplifier.

[0010] A microwave transmitter module for directional transmission of generated microwaves.

[0011] The three-stage stacked Marx generator includes a first-stage stacked generator, a second-stage stacked generator, and a third-stage stacked generator. The first-stage stacked generator, the second-stage stacked generator, and the third-stage stacked generator are stacked together in order from top to bottom. Each of the first-stage stacked generator, the second-stage stacked generator, and the third-stage stacked generator consists of a Marx generator and an insulating assembly. The Marx generator is installed inside the insulating assembly.

[0012] The insulating assembly includes an insulating plate and an insulating post. There are two insulating plates, which are connected by the insulating post. The insulating post is fixedly connected to the insulating plate and is located at the four diagonal points between the two insulating plates.

[0013] The Marx generator includes a power resistor, an energy storage capacitor, an IGBT module, a Schottky diode, and an inductor, which are arranged around the IGBT module.

[0014] The output voltage formula of the three-stage stacked Marx generator is U. out =3N·V0.

[0015] The pulse high-voltage modulator module includes a pulse shaping network, and the pulse leading edge time is given by formula t. r ≈2.2·R·C determines.

[0016] The microwave generator module employs a vacuum tube or a solid-state power amplifier, and its energy conversion efficiency is given by the formula... calculate.

[0017] This utility model discloses a three-stage stacked Marx high-power microwave pulse generator, which has the following beneficial effects:

[0018] 1. High energy density: The three-stage stacked design increases the output voltage to three times that of the traditional single-stage structure and improves the energy density by 50%.

[0019] 2. Compact structure: The vertical stacking layout reduces the footprint by 40%, making it suitable for mobile platform deployments.

[0020] 3. Wide pulse width adaptation: Microsecond-level pulse width is achieved through pulse shaping network to match the requirements of microwave source. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0022] Figure 1 This is a structural diagram of the three-stage stacked Marx generator of this utility model.

[0023] Figure 2 This is a structural diagram of the single-pole device of the three-stage stacked Marx generator of this utility model.

[0024] Figure 3 This is a top view of the connection of the single-pole device of the three-stage stacked Marx generator of this utility model.

[0025] Figure 4 This is the pulse shaping network circuit diagram of this utility model.

[0026] Figure 5 This is a pulse output waveform diagram of the three-stage stacked Marx generator of this utility model.

[0027] In the diagram: 1-Level 1 stacked generator, 2-Level 2 stacked generator, 3-Level 3 stacked generator, 4-Insulating board, 5-Insulating column, 6-Power resistor, 7-Energy storage capacitor, 8-IGBT module, 9-Schottky diode, 10-Inductor. Detailed Implementation

[0028] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0029] Please see Figures 1 to 3 ,in Figure 1 This is a structural diagram of the three-stage stacked Marx generator of this utility model. Figure 2 This is a structural diagram of the single-pole device of the three-stage stacked Marx generator of this utility model. Figure 3 This is a top view of the connection of the single-pole device of the three-stage stacked Marx generator of this utility model.

[0030] This utility model discloses a three-stage stacked Marx high-power microwave pulse generator, comprising a three-stage stacked Marx generator, a pulse high-voltage modulator module, a microwave generator module, and a microwave transmitter module.

[0031] In this embodiment, a three-stage stacked Marx generator is included for storing energy in stages and generating high-voltage pulses; a pulse high-voltage modulator module is connected to the three-stage stacked generator 3 for superimposing and modulating high-voltage pulses; a microwave generator module receives the modulated high-voltage pulses and converts them into gigawatt-level microwaves through a solid-state power amplifier; and a microwave transmitter module is used for directional transmission of the generated microwaves.

[0032] The three-stage stacked Marx generator includes a first-stage stacked generator 1, a second-stage stacked generator 2, and a third-stage stacked generator 3. These three generators are stacked sequentially from top to bottom, and each generator consists of a Marx generator and an insulating assembly. The Marx generator is installed within the insulating assembly. The insulating assembly includes an insulating plate 4 and insulating posts 5. There are two insulating plates 4 connected by the insulating posts 5. The insulating posts 5 are fixedly connected to the insulating plates 4 and located at the four diagonal points between the two insulating plates 4. The Marx generator includes a power resistor 6, an energy storage capacitor 7, an IGBT module 8, a Schottky diode 9, and an inductor 10. The power resistor 6, the energy storage capacitor 7, the Schottky diode 9, and the inductor 10 are arranged around the IGBT module 8. The three-stage stacked Marx generator is formed by stacking the first-stage stacked generator 1, the second-stage stacked generator 2, and the third-stage stacked generator 3 sequentially from top to bottom. Each of the three stacked layers is separated by the stacked insulating pillars 5 and the insulating plates 4. The Marx generator is formed by arranging and connecting the power resistor 6, the energy storage capacitor 7, the Schottky diode 9, and the inductor 10 around the IGBT module 8, and the hollow shape in the middle makes the power device more conducive to heat dissipation. Each stage of the three-stage stacked Marx generator includes the capacitor and is connected to the DC high voltage power supply through a high-resistance charging resistor. The IGBT module 8 solid-state switch replaces the traditional spark gap to achieve fast conduction and high stability. Moreover, the three-stage Marx generator is stacked vertically to reduce the horizontal footprint.

[0033] The output voltage formula of the three-stage stacked Marx generator is derived from the principle of superposition of capacitor series discharge voltages. Assuming that the number of capacitors in each stage is N and the single-stage charging voltage is V0, the theoretical output voltage of the three-stage stacked Marx generator is:

[0034] U out =3N·V0

[0035] Secondly, the pulse high-voltage modulator module includes a pulse shaping network, in which the resistor (R) and capacitor (C) determine the pulse leading edge time (tr):

[0036] t r ≈2.2·R·C

[0037] Meanwhile, the microwave generator module uses a vacuum tube or a solid-state power amplifier, and the energy conversion efficiency is given by the formula. Calculate the energy conversion efficiency (η) by assuming the input electrical energy is Ein and the output microwave energy is Eout:

[0038]

[0039] Please see Figure 4 , Figure 4 This is a pulse shaping network circuit diagram.

[0040] Wherein, R1, R2, and R3 are the power resistors 6, C1, C2, and C3 are the energy storage capacitors 7, Q1, Q2, and Q3 are the IGBT modules 8, D1, D2, D3, D4, D5, and D6 are the Schottky diodes 9, and L1, L2, and L3 are the inductors 10.

[0041] Circuit connection principle: The power signal is supplied to the three-stage stacked circuit through L1, L2, and L3 respectively. The negative terminal of D6 is connected to the input terminal IN. The other end of L1 is connected to the gate terminal (G) of Q1 and one end of R1. The other end of R1 is connected to the positive terminal of D1, and the negative terminal of D1 is connected to C1 and the output terminal OUT. The drain terminal (D) of Q1 is connected to C1 and one end of R2. The other end of R2 is connected to the positive terminal of D2. The other end of L2 is connected to the gate terminal (G) of Q2 and one end of resistor R3. The other end of R3 is connected to the positive terminal of D3, and the negative terminal of D3 is connected to C2 and the negative terminal of D2. The drain terminal (D) of Q2 is connected to C2 and one end of R4. The other end of R4 is connected to the positive terminal of D4. The other end of L3 is connected to the gate terminal (G) of Q3 and one end of R5. The other end of R5 is connected to the positive terminal of D5, and the negative terminal of D5 is connected to C3 and the negative terminal of D4. The D terminal of Q3 is connected to one end of C3 and Spieth R6, and the other end of R6 is connected to the positive terminal of D6.

[0042] Parameter design: Single-stage charging voltage V0 = 20kV, then the theoretical output voltage U out =60kV; In the pulse shaping network, R=10Ω, C=10nF, the pulse leading edge time t_r=220ns is calculated.

[0043] Experimental verification: Under a 50Ω load, the measured output voltage is 60kV, the pulse width is 1.5μs, and the energy conversion efficiency is 85%, which is consistent with the theoretical value.

[0044] Circuit working principle: The input signal IN is amplified by a three-stage stacked pulse generator, and a high-power microwave pulse of 60kV and 220ns can be generated at the output terminal OUT.

[0045] Please see Figure 5 , Figure 5 This is a waveform diagram of the pulse output of a three-stage stacked Marx generator.

[0046] Data Interpretation:

[0047] 1. Pulse sequence design:

[0048] Level 3 pulse: 60kV @ 0-300ns (rise time 220ns)

[0049] Second-stage pulse: 59kV@300-600ns (rise time 220ns)

[0050] First-stage pulse: 55kV@600-900ns (rise time 220ns)

[0051] Interval time: 100ns (900ns-1μs)

[0052] 2. Waveform characteristics:

[0053] Rising edge: 220ns (meets the tr=220ns requirement)

[0054] Falling edge: 50ns time constant with exponential decay

[0055] Pulse width: 300ns (including rise / fall time)

[0056] 3. System characteristics:

[0057] Total energy storage: Approximately 1.8J (based on typical load calculations)

[0058] Repetition frequency: Supports operation at 1MHz level

[0059] Voltage sag: ≤1.7% per pulse (caused by interstage stray parameters)

[0060] When using the three-stage stacked Marx high-power microwave pulse generator of this utility model, the three-stage stacked design of the three-stage stacked Marx generator increases the output voltage to 3 times that of the traditional single-stage structure, increases the energy density by 50%, and the vertical stacking layout reduces the footprint by 40%, making it suitable for deployment on mobile platforms. It achieves microsecond-level pulse width through pulse shaping network to match microwave source requirements.

[0061] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art will understand that all or part of the processes for implementing the above embodiments and equivalent variations made in accordance with the claims of this application are still within the scope of this application.

Claims

1. A three-stage stacked Marx high-power microwave pulse generator, characterized in that, It includes a three-stage stacked Marx generator for storing energy in stages and generating high-voltage pulses; A pulse high-voltage modulator module, connected to the three-stage stacked Marx generator, is used to superimpose and modulate high-voltage pulses; The microwave generator module receives modulated high-voltage pulses and converts them into gigawatt-level microwaves via a solid-state power amplifier. A microwave transmitter module for directional transmission of generated microwaves.

2. The three-stage stacked Marx high-power microwave pulse generator as described in claim 1, characterized in that, The three-stage stacked Marx generator includes a first-stage stacked generator, a second-stage stacked generator, and a third-stage stacked generator. The first-stage stacked generator, the second-stage stacked generator, and the third-stage stacked generator are stacked together in order from top to bottom. Each of the first-stage stacked generator, the second-stage stacked generator, and the third-stage stacked generator consists of a Marx generator and an insulating assembly. The Marx generator is installed inside the insulating assembly.

3. The three-stage stacked Marx high-power microwave pulse generator as described in claim 2, characterized in that, The insulation assembly includes an insulating plate and an insulating column. There are two insulating plates, which are connected by the insulating column. The insulating column is fixedly connected to the insulating plate and is located at the four diagonal corners between the two insulating plates. It is a three-stage stacked Marx high-power microwave pulse generator.

4. The three-stage stacked Marx high-power microwave pulse generator as described in claim 2, characterized in that, The Marx generator includes a power resistor, an energy storage capacitor, an IGBT module, a Schottky diode, and an inductor, which are arranged around the IGBT module.

5. The three-stage stacked Marx high-power microwave pulse generator as described in claim 2, characterized in that, The output voltage formula of the three-stage stacked Marx generator is U. out =3N·V0.

6. The three-stage stacked Marx high-power microwave pulse generator as described in claim 1, characterized in that, The pulse high-voltage modulator module includes a pulse shaping network, and the pulse leading edge time is given by formula t. r ≈2.2·R·C determines.

7. The three-stage stacked Marx high-power microwave pulse generator as described in claim 1, characterized in that, The microwave generator module uses a vacuum tube or a solid-state power amplifier, and its energy conversion efficiency is given by the formula... calculate.

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