An ultra-wideband transducer applied to strong electromagnetic pulse measurement

Abstract

The application discloses an ultra-wideband transducer applied to strong electromagnetic pulse measurement, a manufacturing method and electronic equipment, thick slot lines and thick coplanar waveguides distributed along a first direction and located on both sides of a substrate of a single PCB board; a first sub thick slot line comprises a first signal line and a first ground line; a second sub thick slot line comprises a second signal line and a second ground line; the thick coplanar waveguide comprises a third ground line, a third signal line and a fourth ground line arranged along a second direction, wherein a fourth slot is formed between the fourth signal line and the fourth ground line, and a third slot is formed between the third signal line and the third ground line; the thick coplanar waveguide and the coplanar slot line are connected together, both of which are provided with metal vias, so that the equivalent characteristic impedance is improved, and the impedance characteristics of the circuit are improved.

Description

Technical Field

[0001] This application relates to the field of electronic device technology, and in particular to an ultra-wideband weighing device, manufacturing method and electronic device for measuring strong electromagnetic pulses. Background Technology

[0002] High-power electromagnetic pulse (HMP) measurement technology has crucial applications in electromagnetic compatibility, national defense, and power systems, encompassing numerous fields such as defense, communications, and transportation. HMP measurement requires meeting specific requirements, such as large signal amplitude, high insulation performance, wide bandwidth response, and small size. With increasing integration of electronic devices and the growing complexity of electromagnetic environments, even higher demands are being placed on HMP measurement technology.

[0003] In high-power electromagnetic pulse (HMP) measurement systems, when balanced electromagnetic sensors (such as dipole antennas) transmit data via coaxial lines, some induced current may flow across the outer surface of the cable shield. This current can flow around the casing of the measuring equipment and couple energy into the power or ground lines, leading to unpredictable equipment performance and unexpected interference to other devices. The core function of a balun is to suppress the current flowing on the outer surface of the coaxial line's outer conductor to improve the system's common-mode rejection ratio (CMRR). As a key passive device, the balun plays a crucial role in achieving efficient conversion between balanced and unbalanced transmission lines, and its performance directly affects the stability and reliability of the entire communication line system. Summary of the Invention

[0004] The main objective of this application is to provide an ultra-wideband weighing device, manufacturing method, and electronic device for measuring strong electromagnetic pulses, aiming to solve the problem of converting balanced signals to unbalanced signals in a strong electromagnetic environment.

[0005] To achieve the above objectives, this application provides an ultra-wideband weighing device for measuring strong electromagnetic pulses, comprising: thick slot lines and thick coplanar waveguides distributed along a first direction and located on both sides of a substrate of a single PCB board; wherein the thick slot lines include a first sub-thick slot line and a second sub-thick slot line arranged sequentially along a second direction; the first sub-thick slot line includes a first signal line and a first ground line, wherein a first slot is formed between the first signal line and the first ground line, and both the first signal line and the first ground line are connected to a first SMA connector; the second sub-thick slot line includes a second signal line and a second ground line, wherein a second slot is formed between the second signal line and the second ground line, and both the second signal line and the second ground line are connected to a second SMA connector; both the first slot and the second slot include a first segment and a second segment, the two first segments are arranged parallel to each other in the second direction, the first ends of the two second segments are respectively connected to the two first segments, and the distance between the second ends of the two second segments in the second direction is less than the distance between the two first ends in the second direction; the thick coplanar waveguide includes a first sub-thick slot line and a second sub-thick slot line arranged along the second direction. The system comprises three ground lines, a third signal line, and a fourth ground line. A third slot exists between the third signal line and the third ground line, and a fourth slot exists between the third signal line and the fourth ground line. The first and third slots are connected, as are the second and fourth slots. The fourth ground line is connected to the second ground line, and the third ground line is connected to the first signal line. The two ends of the third signal line are connected to the first ground line and the second signal line respectively via a first resistor and a second resistor. The other two ends of the third signal line are connected to the inner conductor of the third SMA connector. Both the third and fourth ground lines are connected to the outer conductor of the third SMA connector. The first direction is the length direction of the single PCB board, the second direction is the width direction of the single PCB board, and the third direction is the height direction of the single PCB board. The input signals of the first and second sub-thickness slot lines are differential signals. After the differential signals are fed into the thick coplanar waveguide, an unbalanced signal is output on the third signal line. Alternatively, an unbalanced signal is input on the third signal line, and differential signals are output on the first and second sub-thickness slot lines respectively.

[0006] Optionally, the first sub-thick slot line and the second sub-thick slot line are respectively provided with a first copper-clad laminate and a second copper-clad laminate along a third direction, and the thick coplanar waveguide is respectively provided with a third copper-clad laminate and a fourth copper-clad laminate along a third direction; wherein, the first copper-clad laminate and the third copper-clad laminate are coplanar, and the second copper-clad laminate and the fourth copper-clad laminate are coplanar; the first copper-clad laminate and the second copper-clad laminate are connected by a metal connector provided along a third direction; the third copper-clad laminate and the fourth copper-clad laminate are connected by a metal connector provided along a third direction; a thick slot line dielectric board is provided between the first copper-clad laminate and the second copper-clad laminate, and between the third copper-clad laminate and the fourth copper-clad laminate, and each metal connector passes through the thick slot line dielectric board.

[0007] Optionally, the first sub-thickness slot line and the second sub-thickness slot line are respectively provided with a first copper-clad laminate and a second copper-clad laminate along a third direction, the projection of the first sub-thickness slot line in the second direction coincides with the second copper-clad laminate, and the projection of the third copper-clad laminate in the third direction coincides with the fourth copper-clad laminate. Optionally, the first sub-thickness groove line and the second sub-thickness groove line are respectively provided with a first copper-clad laminate and a second copper-clad laminate along a third direction, and the first sub-two second segments are respectively smoothly connected to their corresponding two first segments.

[0008] Optionally, the first sub-thickness slot line and the second sub-thickness slot line are respectively provided with a first copper-clad laminate and a second copper-clad laminate along a third direction. The first sub-thickness slot line also includes: a third resistor connected to the third ground line; and a fourth resistor connected to the fourth ground line.

[0009] Optionally, it also includes: a housing, which is wrapped around the outer side of the single PCB board and is connected to the first SMA connector to the third SMA connector via flanges.

[0010] Optionally, the metal connector includes a metal via and a metal post.

[0011] To achieve the above objectives, this application also provides a method for manufacturing an ultra-wideband weighing instrument for measuring strong electromagnetic pulses. The method is characterized by comprising: processing metal copper holes through PCB technology; and forming thick groove lines and thick coplanar waveguides respectively using a two-step etching process.

[0012] To achieve the above objectives, this application also provides a computer-readable storage medium including instructions that, when executed on a computer, cause the computer to perform the ultra-wideband weighing device for measuring strong electromagnetic pulses provided in the above embodiments.

[0013] To achieve the above objectives, this application also provides an electronic device, which includes: at least one processor, a memory, and an input / output unit; wherein the memory is used to store a computer program, and the processor is used to call the computer program stored in the memory to execute the ultra-wideband weighing device for measuring strong electromagnetic pulses provided in any of the foregoing embodiments.

[0014] This application discloses an ultra-wideband weighing device, manufacturing method, and electronic device for measuring strong electromagnetic pulses. It utilizes thick slot lines and thick coplanar waveguides distributed along a first direction on both sides of the substrate of a single PCB board. These thick coplanar waveguides and slot lines are wider than traditional coplanar waveguides and slot lines, possessing greater power capacity and thus being more suitable for strong electromagnetic pulse measurements. Simultaneously, the low impedance characteristics of the thick coplanar waveguides and slot lines allow for a small size and light weight. Due to the symmetrical slots at the two balanced ports, the output waveform phase difference is stable. This weighing device design is inexpensive; a 50Ω coaxial cable can be directly fed into the circuit board, requiring no additional adjustments after direct fabrication. The thick slot line includes a first sub-thick slot line and a second sub-thick slot line arranged sequentially along a second direction. The first sub-thick slot line includes a first signal line and a first ground line, wherein a first slot is formed between the first signal line and the first ground line, and both the first signal line and the first ground line are connected to a first SMA connector. The second sub-thick slot line includes a second signal line and a second ground line, wherein a second slot is formed between the second signal line and the second ground line, and both the second signal line and the second ground line are connected to a second SMA connector. Both the first slot and the second slot include a first segment and a second segment. The two first segments are arranged parallel to each other in the second direction, and the first ends of the two second segments are respectively connected to the two first segments. The connection is such that the distance between the second ends of the two second segments in the second direction is less than the distance between the two first ends in the second direction. A third slot is present between the third signal line and the third ground line. The thick coplanar waveguide includes a third ground line, a third signal line, and a fourth ground line arranged along the second direction, with a fourth slot between the third signal line and the fourth ground line. The second and fourth slots are connected. The two ends of the third signal line are connected to the first ground line and the second signal line respectively through a first resistor and a second resistor. The transition portion of the thick slot line to the thick coplanar waveguide is connected by a resistor. This prevents short circuits between input ports within the metal housing, ensuring good operating characteristics. The fourth ground line connects to the second ground line, and the third signal line connects to the inner conductor of the third SMA connector. Both the third and fourth ground lines connect to the outer conductor of the third SMA connector. This application solves the problem of an ultra-wideband switching device applied to strong electromagnetic pulse measurement. The thick slot line and thick coplanar waveguide are wider than traditional slot lines and planar waveguides, possessing greater power capacity. Simultaneously, the synthesis of two waves with opposite phases is achieved through microwave propagation coupling. To achieve single-port phase reversal, a conversion from a thick slot line to a thick coplanar waveguide is used. The characteristic impedance of the slot lines can be reduced via metal vias for easy matching with 50-ohm coaxial connectors. The coplanar waveguide and slot lines are printed on both sides of the substrate. The geometry on both sides is identical and connected via metal vias. Since the coplanar waveguide can be approximated as two parallel structures of asymmetric coplanar slot lines side-by-side, the incident electromagnetic energy at the input portion guided by the two slots along the coplanar waveguide can be naturally synthesized onto the two slots of the coplanar waveguide, realizing an ultra-wideband switching device for strong electromagnetic pulse measurements. Attached Figure Description

[0015] Figure 1 Top view of the structure of this application for an ultra-wideband weighing device used in the measurement of strong electromagnetic pulses; Figure 2 The side view of the structure of this application is a side view of an ultra-wideband weighing device for use in the measurement of strong electromagnetic pulses; Figure 3 shows the ultra-wideband switching device used in strong electromagnetic pulse measurement. (a) is a cross-sectional view of the thick coplanar waveguide. Figure 3 shows a cross-sectional view of the first input port of an ultra-wideband weighing device used for measuring strong electromagnetic pulses (b). Figure 3 shows the ultra-wideband weighing device used for strong electromagnetic pulse measurement. (c) is a cross-sectional view of the through hole in this application. Figure 4 The circuit board housing structure diagram of this application is for an ultra-wideband weighing device used in the measurement of strong electromagnetic pulses; Figure 5 The diagram shows the test results of the S-parameters of the structure port of this application for an ultra-wideband weighing device used in the measurement of strong electromagnetic pulses. Figure 6 The diagram shows the port phase difference test results of the ultra-wideband switching device used for measuring strong electromagnetic pulses. Figure 7 The time-domain output result of the port of this application is shown in the figure for an ultra-wideband weighing device used in the measurement of strong electromagnetic pulses. Figure 8 The electric field distribution diagram during operation is shown in this application for an ultra-wideband weighing device used in the measurement of strong electromagnetic pulses.

[0016] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0017] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0018] Reference Figure 1 The first embodiment of this application provides an ultra-wideband weighing device for measuring strong electromagnetic pulses. This ultra-wideband weighing device for measuring strong electromagnetic pulses may include: Thick slot lines 2 and thick coplanar waveguides are distributed along a first direction and located on both sides of the substrate of a single PCB board. The thick slot lines 2 include a first sub-thick slot line and a second sub-thick slot line arranged sequentially along a second direction. The first sub-thick slot line includes a first signal line 21 and a first ground line 22, wherein a first slot is formed between the first signal line 21 and the first ground line 22, and both the first signal line 21 and the first ground line 22 are connected to a first SMA connector. The second sub-thick slot line includes a second signal line 23 and a second ground line 24, wherein there is a second slot between the second signal line 23 and the second ground line 24, and both the second signal line 23 and the second ground line 24 are connected to a second SMA connector. Both the first and second slots include a first segment 10 and a second segment. The two first segments 10 are arranged parallel to each other in the second direction. The first ends of the two second segments are respectively connected to the two first segments 10. The distance between the second ends of the two second segments in the second direction is less than the distance between the two first ends in the second direction. The thick coplanar waveguide includes a fourth ground line 14, a third ground line 12 and a third signal line 11 arranged along the second direction, wherein a third slot is formed between the third signal line 11 and the third ground line 12, and a fourth slot is formed between the third signal line 11 and the fourth ground line 14; The first slot and the third slot are connected, and the two ends of the third ground wire 12 are connected to the first ground wire 22 and the second signal line 23 through the first resistor and the second resistor, respectively. The second slot and the fourth slot are connected. The fourth ground wire 14 is connected to the second ground wire 24. The third ground wire is connected to the first signal wire 23. The two ends of the third signal wire 11 are connected to the inner conductor of the third SMA connector. The third ground wire 12 and the fourth ground wire 14 are both connected to the outer conductor of the third SMA connector. The first direction is the length direction of a single PCB board, the second direction is the width direction of a single PCB board, and the third direction is the height direction of a single PCB board. The input signals of the first sub-thick slot line and the second sub-thick slot line are differential signals. After the differential signal is fed into the thick coplanar waveguide, the unbalanced signal is output at the third signal line 11. That is, the balancer applied to electromagnetic pulse wave synthesis refers to combining two signals with the same amplitude and a phase difference of 180° into one signal. The phase synchronization of the strong electromagnetic pulse is controlled by transmission line technology to achieve efficient in-phase superposition of broadband strong electromagnetic pulses.

[0019] Alternatively, an unbalanced signal can be input to the third signal line 11, and differential signals can be output on the first and second sub-thick slot lines, respectively. In other words, in unbalanced output mode, the output port is used as the input port, and the first and second input ports are used as the second input ports, which together form two output ports to obtain a balanced microwave signal with a 180-degree phase difference. The thick coplanar waveguide structure includes a first metal plate and a second metal plate stacked along a first direction, and a plurality of metal connectors located between the first metal plate and the second metal plate along the planar waveguide; and a first microstrip line dielectric layer located between the first metal plate and the second metal plate and sleeved on the outer wall of each of the metal connectors.

[0020] In one embodiment of this application, the first sub-thickness slot line and the second sub-thickness slot line are respectively provided with a first copper-clad laminate and a second copper-clad laminate along a third direction, and the thick coplanar waveguide is respectively provided with a third copper-clad laminate 7 and a fourth copper-clad laminate along a third direction. Among them, the first copper-clad laminate and the third copper-clad laminate 7 are co-faced, and the second copper-clad laminate and the fourth copper-clad laminate 8 are co-faced; The first copper-clad laminate and the second copper-clad laminate are connected by a metal connector 41 disposed along a third direction; The third copper-clad laminate 7 and the fourth copper-clad laminate 8 are connected by a metal connector 41 disposed along the third direction; Thick groove line 2 dielectric boards are provided between the first copper clad laminate and the second copper clad laminate, as well as between the third copper clad laminate 7 and the fourth copper clad laminate 8, and each metal connector 41 passes through the thick groove line dielectric board 3.

[0021] In one embodiment of this application, the projection of the first copper-clad laminate in the second direction coincides with that of the second copper-clad laminate, and the projection of the third copper-clad laminate 7 in the third direction coincides with that of the fourth copper-clad laminate 8. That is, the projection of the first metal plate on which the second metal plate is located along the second direction coincides with the outline of the first metal plate.

[0022] Specifically, this application provides an ultra-wideband weighing device for measuring strong electromagnetic pulses, comprising: a thick coplanar waveguide 1, including a third signal line 11 and an output port ground line (including a third ground line 12 and a fourth ground line 14); a thick slot line 2, including a first signal line 21, a first ground line 22, a second signal line 23, and a second ground line 24; the thick slot line 2 is adjacent to the thick coplanar waveguide; a first metal plate 5 (including a first copper-clad laminate and a third copper-clad laminate 7), a second metal plate 6 (including a second copper-clad laminate and a fourth copper-clad laminate 8) along a first direction, and a copper pillar penetrating the top and bottom of the first metal plate 5 and the second metal plate 6.

[0023] Both the first and second slots include a first segment 10 and a second segment 15. The two first segments 10 are arranged parallel to each other in the second direction. The first ends of the two second segments 15 are respectively connected to the two first segments 10, and the second segments 15 and their corresponding first segments 10 are smoothly connected. The distance between the second ends of the two second segments 15 in the second direction is less than the distance between the two first segments 10 in the second direction. The thick coplanar waveguide includes a third ground line 12, a fourth ground line 14, and a third signal line 11 arranged along the second direction. A third slot is formed between the third signal line 11 and the third ground line 12. A fourth slot is formed between the third signal line 11 and the fourth ground line 14. The first slot and the third slot are connected. The third signal line 11 is connected to the first ground line 22 through a first resistor and to the second signal line 23 through a second resistor. The third ground line 12 is connected to the first signal line 21. The second slot and the fourth slot are connected. The fourth ground line 14 is connected to the second ground line 24. The third signal line 11 is connected to the inner conductor of the third SMA connector. The third ground line 12 and the fourth ground line 14 are both connected to the outer conductor of the third SMA connector.

[0024] It should be noted that the second segment 15 is defined as the thick slot line segment close to the thick coplanar waveguide, and the first segment 10 is defined as the thick slot line segment far away from the thick coplanar waveguide.

[0025] Among them, the resistance values ​​of the first sub-thick slot line, the first resistor, and the second resistor are all 25Ω.

[0026] In actual operation, the input section includes a first sub-thick slot line structure and a second sub-thick slot line structure in the second direction. The first sub-thick slot line structure has a first input port on its first side, which is formed by a first slot between a first signal line 21, a first ground line, and a second signal line 23. The second sub-thick slot line structure has a second input port on its first side, which is formed by a second slot between a second ground line 24, a second signal line 23, and a second ground line. The first and second input ports are positioned in a translational manner on the first side of the PCB board. The thick coplanar waveguide and the thick slot line 2 are positioned in a translational manner in the first direction. The side of the thick coplanar waveguide away from the thick slot has a first output port. The first and second input ports are respectively connected to a first SMA connector and a second SMA connector. The input signals of the two SMA connectors have a phase difference of 180 degrees. The output port is connected to a third SMA connector. In unbalanced output mode, the first and second sub-thick slot line structures can simultaneously feed in microwave signals with opposite phases.

[0027] The working principle of this application is that, in unbalanced output mode, the first and second sub-thick slot line structures can simultaneously feed in microwave signals with opposite phases. The thick slot line 2 and the thick coplanar waveguide are wider than traditional slot lines and planar waveguides, possessing greater power capacity, and simultaneously achieving the synthesis of two waves with opposite phases through microwave propagation coupling. To achieve single-port phase reversal, a conversion from the thick slot line 2 to the thick coplanar waveguide is employed. The characteristic impedance of the slot line can be reduced through metal vias for easy matching with 50-ohm coaxial connectors. The coplanar waveguide and slot line are printed on both sides of the substrate. The geometry on both sides is identical and connected through metal vias. Since the coplanar waveguide can be approximated as two parallel structures of asymmetric coplanar slot lines side-by-side, the incident electromagnetic energy at the input portion guided by the two slots along the coplanar waveguide can be naturally synthesized onto the two slots of the coplanar waveguide.

[0028] In one embodiment of this application, the metal connector 41 includes a metal through hole and a metal post.

[0029] The weighing switch connects two different transmission lines—thick coplanar waveguides and coplanar slotted lines—both with metal vias, which helps improve their equivalent characteristic impedance and thus enhances the circuit's impedance characteristics. Compared to traditional coplanar waveguides and slotted lines, the gaps with metal vias are larger, allowing direct power supply via SMA connectors. Two thick slotted lines are used for the input section, while the coplanar waveguide is used to synthesize the two slotted lines for the output section. Electromagnetic waves guided by the two thick slotted lines naturally transition into the two slots of the thick coplanar waveguide, and then transition to the SMA interface via the thick coplanar waveguide. Based on this novel structure, a weighing switch with a single-layer PCB was fabricated and tested.

[0030] In one embodiment of this application, the ultra-wideband weighing device used for measuring strong electromagnetic pulses further includes: a third resistor connected to the third ground wire 12; and a fourth resistor connected to the fourth ground wire 14.

[0031] Typically, to naturally synthesize microwaves from the two thick slot lines 2, ground lines 12 on both sides of the signal lines are connected by resistors at the thick coplanar waveguide to achieve a good synthesis effect. For example, a 440-ohm resistor (the third resistor) and two 470-ohm resistors (the fourth resistors) are arranged along the first direction on the thick coplanar waveguide to achieve a good transition effect.

[0032] In one embodiment of this application, the ultra-wideband weighing device used for measuring strong electromagnetic pulses further includes: The housing is wrapped around the outside of a single PCB board and is connected to the first SMA connector to the third SMA connector via flanges.

[0033] Specifically, the weighing instrument in this application is equipped with an EMI-coated housing, the structure of which is as follows: Figure 4As shown. The EMI enclosure forms a continuous conductive layer using conductive material, blocking external high-frequency electromagnetic waves from entering the weighing converter and affecting its circuit operation. The balance port of the weighing converter is susceptible to even-mode interference. The EMI enclosure reduces signal leakage through grounding design and conductive sealing materials (such as elastic gaskets), ensuring the phase and power balance of the weighing converter. The enclosure design encloses the PCB board, reducing the coupling between electromagnetic fields and PCB lines in the testing environment. SMA connectors are fixed to the enclosure through gaps, and the inner and outer conductors of the coaxial cable are directly soldered to the PCB line ports. Absorbing material is applied to the inner wall of the PCB enclosure to reduce the resonance effect of microwaves inside.

[0034] Furthermore, the structural diagram of the balancer applied to electromagnetic pulse wave synthesis is shown below. Figure 1 and Figure 2 As shown, in this application example, the wideband weighing device was analyzed and fabricated on Rogers4003C with a thickness of 0.813mm (εr=3.55, tanδ=0.0027).

[0035] Typically, in this application example, the board material is 74.60 mm long and 40 mm wide, with a feed slot width of 0.25 mm. The signal line and ground line are located on both sides of the slot. The slot input port structure is shown in Figure 3(b). The slot signal line transitions from thin to thick. The signal line of the coplanar waveguide is 16.1*1.2*0.07 mm long, wide, and thick. The slot width on both sides of the coplanar waveguide is 0.40 mm. In this case, the SMA interface can be directly connected to the planar waveguide port. The thick coplanar waveguide structure is shown in Figure 3(a). The metal pillars can also be implemented using metal vias, as shown in Figure 3(c). The diameter of the metal vias is 0.40 mm, the lateral spacing is 0.80 mm, and they pass through the dielectric board and are aligned with the upper and lower plates. The entire weighing device is fabricated using a single-layer PCB board, which does not have high process requirements.

[0036] It is worth noting that the port connection between the SMA and the PCB board directly affects the overall performance. In the actual manufacturing process, the PCB board is first fixed to the inside of the housing using screw holes, then the SMA connector is fixed to the housing using screw holes, and finally the SMA is soldered to the different ports located on the PCB board. Specifically, the inner conductor of the SMA is soldered to the signal line at the port, and the outer conductor is soldered to the ground line at the port. A tight and good solder joint helps to feed broadband microwave signals from the coaxial line into the thick slot line 2, reducing its reflection loss.

[0037] Compared with existing technologies, this invention has the following advantages: 1. The weighing changer operates at a frequency of DC-5GHz, and can also operate at 0.3GHz-5GHz with the addition of a housing. Its low-frequency performance makes it suitable for most strong electromagnetic pulse measurements. 2. The entire weighing changer mainly consists of metallized through-holes, metal patches, coplanar waveguides, and slot lines. The entire structure can be implemented using traditional PCB technology. 3. The thicker coplanar waveguides and slot lines are wider than traditional coplanar waveguides and slot lines, possessing greater power capacity, thus making them more suitable for strong electromagnetic pulse measurements. Simultaneously, the low impedance characteristics of the thicker coplanar waveguides and slot lines result in a small size and light weight. 4. The weighing changer has low design cost; the 50Ω coaxial cable can be directly fed into the circuit board, requiring no additional debugging after direct fabrication. 5. Due to the symmetrical slots of the two balanced ports, the output waveform phase difference is stable. 6. It can be installed in a metal housing to prevent external electromagnetic environments from affecting the circuit operation. 7. The transition section of the thick slot line to the thick coplanar waveguide is connected by a resistor. At this time, short circuits between the input ports are avoided within the metal housing, thus ensuring good operating characteristics.

[0038] The simulation results of the technical solution of this application are given below with reference to the embodiments and accompanying drawings.

[0039] In this embodiment, when the input peak power of the weighing device is a 1W broadband signal, the peak input voltage at the balance port reaches 7.1V, and the induced voltage between the slot lines reaches 3000V / m. Figure 4 Considering the internal resistance factor, each input power capacity is 50W, at which point the external field strength can be measured up to 50kV / m, which meets the general requirements for strong electromagnetic pulse measurement.

[0040] To intuitively obtain the S-parameters of the weighing changer, the first output port is designated as port 1, and the first and second input ports are designated as ports 2 and 3, respectively. Test results of this invention demonstrate that the weighing changer has excellent operating characteristics, such as... Figure 4 , Figure 5 As shown. The reflection loss in the 0-5GHz range is less than -15dB, the insertion loss is better than -6dB, and the phase difference of the balanced input signal is 180°. The ultra-wideband weighing switch board of this application has a total length of 74.60mm, a width of 40mm, and a thickness of 0.813mm. The copper foil thickness of the copper-clad laminate is 0.07mm, and gold plating on the metal surface can prevent the copper plate from oxidizing in air.

[0041] In conclusion, the manufacturing method of the weighing device applied to electromagnetic pulse wave synthesis can be proven.

[0042] Based on the above embodiments, this application also provides a storage medium storing computer-executable instructions, which are used to control a CNC machine tool to implement the manufacturing method provided in the foregoing embodiments, and are particularly used to control the machining accuracy of the metal copper holes.

[0043] Based on the above embodiments, this application also provides an electronic device, the electronic device comprising: at least one processor, a memory, and an input / output unit; the processor is used to call a computer program stored in the memory to execute the method for manufacturing a weighing device based on the electromagnetic pulse wave synthesis described above.

[0044] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. An ultra-wideband weighing switch for measuring strong electromagnetic pulses, characterized in that, include: Thick slot lines and thick coplanar waveguides are distributed along a first direction and located on both sides of the substrate of a single PCB board, wherein the thick slot lines include a first sub-thick slot line and a second sub-thick slot line arranged sequentially along a second direction. The first sub-thick slot line includes a first signal line and a first ground line, wherein a first slot is provided between the first signal line and the first ground line, and both the first signal line and the first ground line are connected to a first SMA connector; The second sub-thick slot line includes a second signal line and a second ground line, wherein there is a second slot between the second signal line and the second ground line, and both the second signal line and the second ground line are connected to a second SMA connector. Both the first and second slots include a first segment and a second segment. The two first segments are arranged parallel to each other in the second direction. The first ends of the two second segments are connected to the two first segments respectively. The distance between the second ends of the two second segments in the second direction is less than the distance between the two first ends in the second direction. The thick coplanar waveguide includes a third ground line, a third signal line, and a fourth ground line arranged along a second direction, wherein there is a third slot between the third signal line and the third ground line, and a fourth slot between the third signal line and the fourth ground line; The first slot and the third slot are connected, the second slot and the fourth slot are connected, the fourth ground wire is connected to the second ground wire, the third ground wire is connected to the first signal wire, and the two ends of the third signal wire are connected to the first ground wire and the second signal wire respectively through the first resistor and the second resistor. The other two ends of the third signal line are connected to the inner conductor of the third SMA connector, and the third ground line and the fourth ground line are both connected to the outer conductor of the third SMA connector. The first direction is the length direction of a single PCB board, the second direction is the width direction of a single PCB board, and the third direction is the height direction of a single PCB board. The input signals of the first sub-thick slot line and the second sub-thick slot line are differential signals. After the differential signals are fed into the thick coplanar waveguide, the unbalanced signal is output on the third signal line. Alternatively, an unbalanced signal can be input into the third signal line, and differential signals can be output on the first sub-thick slot line and the second sub-thick slot line, respectively.

2. The ultra-wideband weighing switch for measuring strong electromagnetic pulses as described in claim 1, characterized in that, The first sub-thickness slot line and the second sub-thickness slot line are respectively provided with a first copper-clad laminate and a second copper-clad laminate along the third direction, and the thick coplanar waveguide is respectively provided with a third copper-clad laminate and a fourth copper-clad laminate along the third direction. Among them, the first copper-clad laminate and the third copper-clad laminate are coplanar, and the second copper-clad laminate and the fourth copper-clad laminate are coplanar; The first copper-clad laminate and the second copper-clad laminate are connected by a metal connector disposed along a third direction. The third and fourth copper-clad laminates are connected by a metal connector arranged along the third direction. Thick slotted dielectric boards are provided between the first and second copper-clad laminates, as well as between the third and fourth copper-clad laminates, and each metal connector passes through the thick slotted dielectric board.

3. The ultra-wideband weighing switch for measuring strong electromagnetic pulses as described in claim 2, characterized in that, The projection of the first copper-clad laminate in the second direction coincides with that of the second copper-clad laminate, and the projection of the third copper-clad laminate in the third direction coincides with that of the fourth copper-clad laminate.

4. The ultra-wideband weighing switch for measuring strong electromagnetic pulses as described in claim 1, characterized in that, The two second segments are smoothly connected to their corresponding two first segments.

5. The ultra-wideband weighing device for measuring strong electromagnetic pulses as described in claim 1, characterized in that, Also includes: The third and fourth resistors; One end of the third resistor is connected to the third ground wire, and the other end of the third resistor is connected to the reference ground; One end of the fourth resistor is connected to the fourth ground line, and the other end of the fourth resistor is connected to the reference ground.

6. The ultra-wideband weighing switch for measuring strong electromagnetic pulses as described in claim 1, characterized in that, Also includes: The housing is wrapped around the outside of a single PCB board and is connected to the first SMA connector to the third SMA connector via flanges.

7. The ultra-wideband weighing device for measuring strong electromagnetic pulses as described in claim 2, characterized in that, The metal connector includes a metal through-hole and a metal post.

8. A method for manufacturing an ultra-wideband weighing instrument for measuring strong electromagnetic pulses, characterized in that, The ultra-wideband switching device for measuring strong electromagnetic pulses as described in any one of claims 1-7 comprises: Metallized copper holes are fabricated using PCB technology; Thick groove lines and thick coplanar waveguides are formed using a two-step etching process.

9. A computer-readable storage medium, characterized in that, It includes instructions that, when run on a computer, cause the computer to perform the ultrawideband weighing instrument manufacturing method for strong electromagnetic pulse measurement as described in claim 8.

10. An electronic device, characterized in that, The electronic device includes: At least one processor, memory, and input / output unit; The memory is used to store computer programs, and the processor is used to call the computer programs stored in the memory to execute the ultra-wideband weighing device manufacturing method for strong electromagnetic pulse measurement according to claim 8.

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