High-power broadband frequency modulation 3dB synthesizer

Abstract

The utility model discloses a high-power broadband frequency modulation 3dB synthesizer, which belongs to the technical field of radio frequency microwave devices, and is characterized in that the synthesizer comprises two U-shaped sling lines which are symmetrically arranged up and down; the plurality of insulating supporting pieces are connected with the two U-shaped sling lines and are used for fixing the two U-shaped sling lines; the two input ports are respectively connected with a first to-ground capacitor and a second to-ground capacitor, and the first to-ground capacitor and the second to-ground capacitor are connected with the U-shaped sling line through first connecting sheets; the output port and the load port are both connected with third ground capacitors, and the two third ground capacitors are both electrically connected with the U-shaped sling line through second connecting pieces; wherein the two input ports, the output port and the load port are all connected with a coaxial connector, so that the effects of realizing high-power signal transmission and broadband frequency modulation functions and improving the stability and reliability of the synthesizer are achieved.

Description

Technical Field

[0001] This application relates to the field of radio frequency microwave device technology, and in particular to a high-power wideband frequency-modulated 3dB synthesizer. Background Technology

[0002] In modern communication systems, efficient and reliable power combining technology is crucial for achieving high-performance radio frequency (RF) equipment. Especially in high-power applications, effectively combining multiple low-power signals into a high-power signal has become one of the key challenges in RF engineering design. While traditional power combiners can meet certain requirements, they still have many limitations in high-power, wide-bandwidth applications. These limitations not only affect the overall system performance but also hinder the development of communication technology.

[0003] Currently, several common methods for achieving high-power and wide-bandwidth power combining and switching include branch-line coupling, single-stub microstrip line coupling, single-stub stripline coupling, and Lange coupling. Each method has its own characteristics, but all are based on the fundamental principle of a quarter-wavelength transmission line. Specifically, branch-line coupling uses two parallel transmission lines to achieve power distribution and combining; single-stub microstrip line coupling achieves the same function by introducing a microstrip line of a specific length into the main line; single-stub stripline coupling replaces the microstrip line with a stripline, making it suitable for high-frequency applications; and Lange coupling improves the frequency response range through cross-coupling.

[0004] However, the main problems faced by the aforementioned traditional methods in practical applications lie in the limitations of power capacity and bandwidth. Especially under high-power conditions, traditional coupling methods are prone to heat accumulation, thus affecting the stability and lifespan of the device. In addition, these methods also exhibit significant frequency dependence in wide-bandwidth applications, making it difficult to maintain good performance across the entire operating frequency band. Therefore, developing a 3dB power combiner that can operate stably under high-power, wide-bandwidth conditions has become an important research topic. Utility Model Content

[0005] In order to achieve high-power signal transmission and wideband frequency modulation and switching functions, and to improve the stability and reliability of the synthesizer, this utility model provides a high-power wideband frequency modulation 3dB synthesizer.

[0006] The high-power wideband FM 3dB synthesizer provided by this utility model adopts the following technical solution:

[0007] A high-power wideband FM 3dB synthesizer, comprising:

[0008] Two U-shaped suspension lines arranged symmetrically at the top and bottom;

[0009] A plurality of insulating supports connected with the two U-shaped strap lines for fixing the two U-shaped strap lines;

[0010] Two first ports, both input ports, each connected with a first ground capacitor and a second ground capacitor, both connected with the U-shaped strap line through a first connecting sheet;

[0011] Two second ports, both output port and load port, each connected with a third ground capacitor, both connected with the U-shaped strap line through a second connecting sheet;

[0012] Wherein, the two input ports, the output port and the load port are all connected with coaxial connectors.

[0013] By adopting the above technical scheme, the use of multiple insulating supports not only fixes the U-shaped strap line, but also ensures the electrical isolation between components, greatly reduces signal interference, and improves the overall stability of the equipment. By adjusting the first ground capacitor, the second ground capacitor and the third ground capacitor, the impedance matching of the input port can be better realized, the power transmission efficiency can be optimized, the energy loss can be reduced, and the overall performance of the system can be improved. The output port and the load port are electrically connected with the U-shaped strap line through the second connecting sheet, which can make the port and the coaxial connector more stable, reduce the possibility of poor contact, realize the impedance matching of wide frequency band, and improve the working efficiency of the equipment. Each port is connected with a 50-ohm coaxial connector to ensure low loss and high matching degree of signal transmission, further enhancing the wideband characteristics and high-power processing capacity of the synthesizer. The phase difference between the input signals of the two input ports is 90 degrees. In the two second ports, the output port and the load port can be exchanged according to the phase difference of the input signals of the input ports. The high-power wideband frequency modulation 3dB synthesizer breaks through the limit of frequency modulation broadcast frequency band (87MHz~108MHz), and increases the bandwidth.

[0014] Preferably, the radius of the first ground capacitor is 13mm, the first ground capacitor is connected with the first connecting sheet through a first inner conductor, and the distance between the axis of the first ground capacitor and the axis of the first inner conductor is 11.8mm.

[0015] By adopting the above technical scheme, the position and size of the first ground capacitor are accurately controlled to ensure that the distance between the first ground capacitor and the first inner conductor is kept within the optimal range, thereby effectively improving the impedance matching and widening the frequency band. At the same time, this design can also optimize the overall layout of the circuit, making the structure more compact and facilitating installation and maintenance.

[0016] Preferably, the second ground capacitance has a radius of 16mm, and is connected to the first connecting piece through a second inner conductor, and the distance between the axis of the second ground capacitance and the axis of the second inner conductor is 12.8mm.

[0017] By adopting the above technical solution, the frequency response range of the frequency modulation 3dB combiner is effectively improved, and good matching performance in a wide frequency band range is ensured. At the same time, the optimized size and position design of the second ground capacitance can reduce the loss in the signal transmission process and improve the stability and reliability of the entire system.

[0018] Preferably, the first connecting piece includes a first fixed part, a connecting part and a second fixed part, the first fixed part and the second fixed part are both horizontally arranged, the connecting part is obliquely arranged, one end of the connecting part is connected to the first fixed part, and the other end is connected to the second fixed part; the first connecting piece corresponding to the first ground capacitance has a first fixed part connected to the first ground capacitance and a second fixed part connected to one of the U-shaped suspended strap lines; the first connecting piece corresponding to the second ground capacitance has a first fixed part connected to the second ground capacitance and a second fixed part connected to the other U-shaped suspended strap line.

[0019] By adopting the above technical solution, the first connecting piece enables the first ground capacitance and the second ground capacitance to be stably connected to the U-shaped suspended strap line, improving the reliability of the electrical connection; at the same time, the structural design of the first connecting piece keeps the path lengths of the two input port radio frequency signals consistent, which can reduce the phase difference.

[0020] Preferably, the third ground capacitance has a radius of 19.4mm, and the distance between the axis of the third ground capacitance and the axis of the self conductor is 9mm.

[0021] By adopting the above technical solution, the frequency response range of the frequency modulation 3dB combiner is effectively improved, and good matching performance in a wide frequency band range is ensured. At the same time, the optimized size and position design of the third ground capacitance can reduce the loss in the signal transmission process and improve the stability and reliability of the entire system.

[0022] Preferably, the second connecting piece includes a first bending part and a second bending part, the first bending part and the second bending part are connected and arranged at an angle; the second connecting piece corresponding to the output port has a first bending part connected to the conductor of the output port and a second bending part connected to one of the U-shaped suspended strap lines; the second connecting piece corresponding to the load port has a first bending part connected to the conductor of the load port and a second bending part connected to the other U-shaped suspended strap line.

[0023] By adopting the above technical scheme, the second connecting sheet enables smooth transition of signals, realizes impedance matching, and improves the stability and reliability of the signals.

[0024] Preferably, the insulating support is made of polytetrafluoro material.

[0025] By adopting the above technical scheme, the insulating support made of polytetrafluoro material not only has excellent high-temperature resistance, but also effectively reduces signal transmission loss, improves system stability and reliability. At the same time, the low dielectric constant characteristics of polytetrafluoro material help to reduce signal reflection and interference, further improving the working efficiency and frequency response range of the synthesizer.

[0026] Preferably, the length of the U-shaped suspension line is 792 mm.

[0027] By adopting the above technical scheme, the phase difference during signal transmission can be ensured to be stable, thereby improving the frequency response range and synthesis efficiency of the synthesizer.

[0028] Preferably, the spacing between the two U-shaped suspension lines is 7.8 mm.

[0029] By adopting the above technical scheme, the mutual interference during signal transmission can be effectively reduced, the stability and transmission efficiency of the signal can be improved, and a wider working frequency band and higher synthesis accuracy can be realized.

[0030] Preferably, the U-shaped suspension line and the insulating support are arranged inside the plug-in box, the insulating support is connected with the plug-in box, and the input port, the output port and the load port are plugged into the plug-in box.

[0031] By adopting the above technical scheme, the overall integration and stability of the high-power wide-band frequency modulation 3dB synthesizer can be effectively improved. The design of the plug-in box not only facilitates the installation and maintenance of the equipment, but also physically protects the internal components from the external environment, thereby prolonging the service life of the equipment.

[0032] In summary, the utility model has the following beneficial effects:

[0033] The use of multiple insulating supports not only fixes the U-shaped suspended strap line, but also ensures electrical isolation between components, greatly reduces signal interference, and improves the overall stability of the device. By adjusting the first ground capacitance, the second ground capacitance, and the third ground capacitance, impedance matching of the input port can be better achieved, power transmission efficiency can be optimized, energy loss can be reduced, and overall system performance can be improved. The output port and the load port are electrically connected to the U-shaped suspended strap line through the second connecting sheet. This design can make the port more stable when connected to a coaxial connector, reduce the possibility of poor contact, achieve wideband impedance matching, and improve the working efficiency of the device. Each port is connected to a 50-ohm coaxial connector to ensure low loss and high matching degree of signal transmission, further enhancing the wideband characteristics and high-power processing capability of the synthesizer. The phase difference between the two input signals is 90 degrees. In the two second ports, the output port and the load port can be exchanged according to the phase difference of the input signals. The high-power wideband frequency modulation 3dB synthesizer breaks through the limitation of the frequency modulation broadcast frequency band (87MHz~108MHz), increasing the bandwidth. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 Figure 1 is a schematic diagram of the overall structure of a high-power wideband frequency modulation 3dB synthesizer.

[0035] Figure 2 Figure 5 is a schematic diagram of the positions of the first port and the second port.

[0036] Figure 3 Figure 8 is a schematic diagram of the structure of the first connecting piece and the second connecting piece.

[0037] Figure 4 Figure 11 is a simulation diagram of the return loss of the input port of the high-power wideband frequency modulation 3dB synthesizer.

[0038] BRIEF DESCRIPTION OF DRAWINGS

[0039] 1, U-shaped suspended strap line; 2, insulating support; 3, first port; 4, first ground capacitance; 41, first inner conductor; 5, second ground capacitance; 51, second inner conductor; 6, second port; 61, third ground capacitance; 7, first connecting sheet; 71, first fixed part; 72, connecting part; 73, second fixed part; 8, second connecting sheet; 81, first bending part; 82, second bending part; 9, plug-in box; 91, first insulating block; 92, second insulating block. DETAILED DESCRIPTION

[0040] In order for those skilled in the art to better understand the technical solutions in the specification, the technical solutions in the specification will be described clearly and completely below in conjunction with the drawings in the specification. Obviously, the described embodiments are only a part of the embodiments of the present application, not all embodiments.

[0041] In the description of the embodiments of the present application, the words "for example" or "for instance" are used to indicate an example, an instance, or an illustration. Any embodiment or design presented as "for example" or "for instance" in the embodiments of the present application should not be construed as being more preferred or advantageous than other embodiments or designs. Rather, the use of the words "for example" or "for instance" is intended to present related concepts in a specific way.

[0042] In the description of the embodiments of the present application, the term "a plurality of" means two or more. For example, a plurality of systems means two or more systems, and a plurality of screen terminals means two or more screen terminals. In addition, the terms "first" and "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more features. The terms "include", "contain", "have" and their variants mean "include but are not limited to", unless otherwise specifically emphasized.

[0043] A high-power wide-band frequency modulation 3dB combiner, with reference to Figure 1 and Figure 2 , comprising a U-shaped suspended line 1, a plurality of insulating supports 2, two first ports 3 and two second ports 6. The U-shaped suspended line 1 is provided with two and is symmetrically arranged up and down. Both U-shaped suspended lines 1 are clamped with insulating supports 2, and the plurality of insulating supports 2 are used to fix the two U-shaped suspended lines 1. Both first ports 3 are input ports, and both input ports are respectively connected with first ground capacitors 4 and second ground capacitors 5, both first ground capacitors 4 and second ground capacitors 5 are electrically connected with the U-shaped suspended line 1 through the first connecting sheet 7. Both second ports 6 are output ports and load ports, both of which are electrically connected with third ground capacitors 61, both third ground capacitors 61 are electrically connected with the U-shaped suspended line 1 through the second connecting sheet 8. Both input ports, output ports and load ports are inserted with coaxial connectors.

[0044] The use of a plurality of insulating supports 2 not only fixes the U-shaped suspended line 1, but also ensures the electrical isolation between each component, greatly reduces signal interference, and improves the overall stability of the equipment. By adjusting the first ground capacitors 4, the second ground capacitors 5 and the third ground capacitors 61, the impedance matching of the input port can be better realized, the power transmission efficiency can be optimized, the energy loss can be reduced, and the overall performance of the system can be improved. Each port is connected with a coaxial connector, which ensures low loss and high matching degree of signal transmission, further enhances the wide-band characteristics and high-power processing capacity of the combiner. This design breaks through the limitation of frequency modulation broadcast frequency band (87MHz~108MHz), and increases the bandwidth.

[0045] With reference to Figure 2 , the two input ports, the output port and the load port are respectively plugged with coaxial connectors with an impedance of 50 ohms. The phases of the signals inputted by the two input ports are 90 degrees apart. In the two second ports 6, the output port and the load port can be exchanged according to the phase difference of the signals inputted by the input ports.

[0046] With reference to Figure 2 , the length of the U-shaped suspended strap line 1 is 792 mm. The stable phase difference in the signal transmission process can be ensured, so as to improve the frequency response range and the synthesis efficiency of the synthesizer.

[0047] With reference to Figure 2 , the spacing between the two U-shaped suspended strap lines 1 is 7.8 mm. The mutual interference in the signal transmission process can be effectively reduced, so as to improve the stability and the transmission efficiency of the signal, thereby realizing a wider working frequency band and a higher synthesis precision.

[0048] The width and the spacing of the two U-shaped suspended strap lines 1 have a great influence on the working bandwidth and the coupling degree. The two parameters are optimized to realize the widening of the frequency band, and to ensure that the transmission coefficient of the synthesizer is -dB, reduce the loss and improve the transmission efficiency.

[0049] With reference to Figure 2 , the length of the middle semicircular part of the U-shaped suspended strap line 1 is 1 / 4 of the wavelength of the center frequency point of the working bandwidth. Based on the 1 / 4 transmission line principle, the wide-side coupling mode is designed, which can ensure the impedance matching of the transmission line and improve the bandwidth of the system.

[0050] With reference to Figure 2 , the insulating support 2 is made of polytetrafluoro material. In the embodiment, the insulating support 2 is provided with five. The two straight line parts of the U-shaped suspended strap line 1 are provided with four, and each straight line part is provided with two. The middle semicircular part of the U-shaped suspended strap line 1 is provided with one.

[0051] The insulating support 2 made of polytetrafluoro material not only has excellent high-temperature resistance, but also can effectively reduce the loss in the signal transmission process, improve the stability and reliability of the system.

[0052] With reference to Figure 2 , the insulating support 2 corresponding to the straight line part of the U-shaped suspended strap line 1 is in a C shape, and the opening thereof faces upward. The insulating support 2 corresponding to the middle semicircular part of the U-shaped suspended strap line 1 is in a C shape, and the opening thereof faces the direction of the U-shaped suspended strap line 1. The U-shaped suspended strap line 1 passes through the hollow part of the insulating support 2, and is clamped with the insulating support 2.

[0053] With reference to Figure 2 and Figure 3The first ground capacitance 4 is fixedly connected with the first connecting sheet 7 through the first inner conductor 41. The radius of the first ground capacitance 4 is 13 mm, and the distance between the axis of the first ground capacitance 4 and the axis of the first inner conductor 41 is 11.8 mm.

[0054] The position and size of the first ground capacitance 4 are accurately controlled to ensure that the distance between the first ground capacitance 4 and the first inner conductor 41 is kept within an optimal range, thereby effectively improving impedance matching and widening the frequency band. Meanwhile, the design can also optimize the overall layout of the circuit, making the structure more compact and facilitating installation and maintenance.

[0055] Referring to Figure 2 and Figure 3 The second ground capacitance 5 is fixedly connected with the first connecting sheet 7 through the second inner conductor 51. The radius of the second ground capacitance 5 is 16 mm, and the distance between the axis of the second ground capacitance 5 and the axis of the second inner conductor 51 is 12.8 mm.

[0056] The frequency response range of the frequency-modulated 3dB combiner is effectively improved, ensuring good matching performance in a wide frequency band range. Meanwhile, the optimized size and position design of the second ground capacitance 5 can reduce the loss during signal transmission and improve the stability and reliability of the entire system.

[0057] Referring to Figure 3 The first connecting sheet 7 includes a first fixed part 71, a connecting part 72, and a second fixed part 73. The first fixed part 71 and the second fixed part 73 are both horizontally arranged, and the connecting part 72 is obliquely arranged, with one end of the connecting part 72 fixedly connected with the first fixed part 71 and the other end fixedly connected with the second fixed part 73. The included angle between the connecting part 72 and the first fixed part 71 and the included angle between the connecting part 72 and the second fixed part 73 are both 40 degrees.

[0058] Referring to Figure 3 The first fixed part 71 of the first connecting sheet 7 corresponding to the first ground capacitance 4 is electrically connected with the first ground capacitance 4, and the second fixed part 73 is electrically connected with one of the U-shaped suspended strap lines 1.

[0059] Referring to Figure 3 The first fixed part 71 of the first connecting sheet 7 corresponding to the second ground capacitance 5 is electrically connected with the second ground capacitance 5, and the second fixed part 73 is electrically connected with the other U-shaped suspended strap line 1.

[0060] The first connecting sheet 7 enables the first ground capacitance 4 and the second ground capacitance 5 to be stably connected to the U-shaped suspended strap lines 1, improving the reliability of electrical connection. Meanwhile, the structural design of the first connecting sheet 7 keeps the path lengths of the two input port radio frequency signals consistent, which can reduce phase differences.

[0061] Referring to Figure 3The radius of the third ground capacitance 61 is 19.4 mm, and the distance between the axis of the third ground capacitance 61 and the axis of the self conductor is 9 mm.

[0062] Referring to Figure 3 The second connecting sheet 8 comprises a first bending part 81 and a second bending part 82. The first bending part 81 and the second bending part 82 are fixedly connected and are provided with an angle.

[0063] Referring to Figure 3 The second connecting sheet 8 corresponding to the output port is fixedly connected with the conductor of the output port at the first bending part 81 and is fixedly connected with one of the U-shaped belt lines 1 at the second bending part 82.

[0064] Referring to Figure 1 The second connecting sheet 8 corresponding to the load port is fixedly connected with the conductor of the load port at the first bending part 81 and is fixedly connected with the other U-shaped belt line 1 at the second bending part 82.

[0065] The second connecting sheet 8 enables smooth transition of signals and improves the stability and reliability of signals. The angle provided between the first bending part 81 and the second bending part 82 enables the load port and the output port to be located on the same horizontal plane, facilitating integration and connection of subsequent devices.

[0066] Referring to Figure 1 The high-power wide-band frequency 3dB synthesizer further comprises a plug-in box 9. The plug-in box 9 is in the shape of a cuboid, and the length, width and height of the plug-in box 9 are 419 mm, 400 mm and 84 mm respectively.

[0067] Referring to Figure 2 and Figure 1 The U-shaped belt line 1 and the insulating support 2 are both arranged inside the plug-in box 9, and the insulating support 2 is fixedly connected with the plug-in box 9. The center of gravity of the plug-in box 9 is located on the symmetry plane of the two U-shaped belt lines 1.

[0068] Referring to Figure 2 and Figure 4 The two input ports, the output port and the load port are all plugged into the plug-in box 9. The two input ports are located at the bottom of the plug-in box 9 and are both fixedly connected with the plug-in box 9 through the first insulating block 91. The output port and the load port are located on the side wall of the plug-in box 9 and are both fixedly connected with the plug-in box 9 through the second insulating block 92.

[0069] The design of the plug-in box 9 not only facilitates installation and maintenance of the device, but also physically protects the internal components from the external environment, thereby prolonging the service life of the device. At the same time, the space layout inside the plug-in box 9 is reasonable, making the plugging of each port more convenient and improving the reliability and operation convenience of the system.

[0070] Referring to ​The echo loss of one input port signal is between -16dB and -32dB, and the echo loss of the other input port signal is between -20dB and -28dB. The echo loss of the two input signals is small, which ensures the quality and stability of the transmission of the two input signals.

[0071] The use principle of the present application is as follows: the length of the U-shaped suspension band line 1 is 792mm, the spacing between the two U-shaped suspension band lines 1 is 7.8mm, and the two U-shaped suspension band lines 1 arranged symmetrically up and down can expand the working frequency band, reduce the loss, improve the power capacity, and synthesize high-power signals. The use of multiple insulating support members 2 not only fixes the U-shaped suspension band line 1, but also ensures the electrical isolation between the components, greatly reduces signal interference, and improves the overall stability of the equipment. By adjusting the first ground capacitance 4, the second ground capacitance 5 and the third ground capacitance 61, the impedance matching of the input port can be better realized, the power transmission efficiency can be optimized, the energy loss can be reduced, and the overall performance of the system can be improved. The output port and the load port are electrically connected to the U-shaped suspension band line 1 through the second connecting sheet 8, which can make the connection of each port with the coaxial connector more stable, reduce the possibility of poor contact, realize the impedance matching of wide frequency band, and improve the working efficiency of the equipment. Each port is connected with a coaxial connector, which ensures low loss and high matching degree of signal transmission, and further enhances the wide frequency band characteristics and high power processing capacity of the synthesizer. The 3dB synthesizer of the embodiment breaks through the limitation of the frequency modulation broadcast frequency band (87MHz~108MHz), and the working bandwidth can reach 70MHz~136MHz, which increases the bandwidth by 214%, and the power capacity can reach more than 15kW.

[0072] The phases of the input signals of the two input ports are different by 90 degrees. In the two second ports, the output port and the load port can be interchanged according to the phase difference of the input signals of the input ports.

[0073] The embodiments of the specific embodiment are the preferred embodiments of the utility model, and do not limit the protection scope of the utility model, so that: any equivalent changes made according to the structure, shape and principle of the utility model should be covered within the protection scope of the utility model.

Claims

1. A high power wideband frequency modulated 3dB combiner, characterized in that, The utility model relates to a kind of coaxial cable, including: Two U-shaped suspension band lines (1) arranged symmetrically up and down; Multiple insulating supports (2) are connected with two U-shaped suspension band lines (1), for fixing two U-shaped suspension band lines (1); Two first ports (3) are input ports, and two input ports are respectively connected with first ground capacitances (4) and second ground capacitances (5), and the first ground capacitances (4) and the second ground capacitances (5) are connected with the U-shaped suspension band line (1) by first connecting sheet (7); Two second ports (6) are output port and load port respectively, and both are connected with third ground capacitances (61), and two third ground capacitances (61) are electrically connected with the U-shaped suspension band line (1) by second connecting sheet (8); Wherein, two input ports, output port and load port are connected with coaxial connector.

2. A high power wideband frequency modulated 3dB combiner as claimed in claim 1, characterized in that, The radius of the first ground capacitance (4) is 13mm, the first ground capacitance (4) is connected with the first connecting sheet (7) by the first inner conductor (41), and the distance between the axis of the first ground capacitance (4) and the axis of the first inner conductor (41) is 11.8mm.

3. A high power wideband frequency modulator 3dB combiner as claimed in claim 1, characterized in that, The radius of the second ground capacitance (5) is 16mm, the second ground capacitance (5) is connected with the first connecting sheet (7) by the second inner conductor (51), and the distance between the axis of the second ground capacitance (5) and the axis of the second inner conductor (51) is 12.8mm.

4. A high power wideband frequency modulator 3dB combiner as claimed in claim 1, characterized in that, The first connecting sheet (7) includes first fixed part (71), connecting part (72) and second fixed part (73), the first fixed part (71) and second fixed part (73) are both horizontally arranged, the connecting part (72) is obliquely arranged, one end of the connecting part (72) is connected with the first fixed part (71), and the other end is connected with the second fixed part (73); The first connecting sheet (7) corresponding to the first ground capacitance (4) is connected with the first ground capacitance (4) by the first fixed part (71), and the second fixed part (73) is connected with one of the U-shaped suspension band line (1); The first connecting sheet (7) corresponding to the second ground capacitance (5) is connected with the second ground capacitance (5) by the first fixed part (71), and the second fixed part (73) is connected with the other U-shaped suspension band line (1).

5. A high power wideband frequency modulator 3dB combiner as claimed in claim 1, characterized in that, The radius of the third ground capacitance (61) is 19.4mm, and the distance between the axis of the third ground capacitance (61) and the axis of the self conductor is 9mm.

6. A high power wideband frequency modulator 3dB combiner as claimed in claim 1, characterized in that, The second connecting sheet (8) includes first bending part (81) and second bending part (82), and the first bending part (81) and the second bending part (82) are connected and arranged at an angle; The first bending part (81) of the second connecting sheet (8) corresponding to the output port is connected with the conductor of the output port, and the second bending part (82) is connected with one of the U-shaped suspension band line (1); The first bending part (81) of the second connecting sheet (8) corresponding to the load port is connected with the conductor of the load port, and the second bending part (82) is connected with the other U-shaped suspension band line (1).

7. A high power wideband frequency modulator 3dB combiner as claimed in claim 1, wherein, The insulating support (2) is made of polytetrafluoroethylene material.

8. A high power wideband frequency modulator 3dB combiner as claimed in claim 1, characterized in that, The length of the U-shaped suspension line (1) is 792 mm.

9. A high power wideband frequency modulator 3dB combiner as claimed in claim 1 characterized by, The spacing between the two U-shaped suspension lines (1) is 7.8 mm.

10. A high power wideband frequency modulated 3dB combiner as claimed in claim 1, characterized in that, The U-shaped suspension line (1) and the insulating support (2) are arranged inside the plug-in box (9), the insulating support (2) is connected with the plug-in box (9), and the input port, the output port and the load port are plugged into the plug-in box (9).

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