High-power coaxial feed source

Abstract

The invention discloses a high-power coaxial feed source which comprises a double-ridge horn opening section, a ridge waveguide conversion section and a coaxial waveguide conversion section which are coaxially arranged, a step ridge section with the hollow interior and a pair of arc-shaped ridge sections with the hollow interior are arranged in the feed source, and the top end of the step ridge section is communicated with the bottom end of the arc-shaped ridge section on the same side. The bottom end of the step ridge section extends into the coaxial waveguide conversion section, a bottom cover plate is installed at the bottom end of the coaxial waveguide conversion section, a coaxial inner conductor and a coaxial outer conductor which are coaxially arranged are installed in the middle of the bottom cover plate, and the outer side of the coaxial inner conductor is wrapped with a dielectric body with the top end in a cone frustum shape. The top end of the coaxial inner conductor and the top end of the dielectric body penetrate through the bottom cover plate and extend into the coaxial waveguide conversion section, the step ridge section is integrally provided with a connecting block, a threaded hole and a vent hole which are coaxial with the coaxial inner conductor are machined in the connecting block, and the top end, extending out of the dielectric body, of the coaxial inner conductor extends into the threaded hole. And the discharge threshold is improved by 10 times compared with the traditional related product.

Description

Technical Field

[0001] The invention belongs to the technical field of satellite-borne high-power antennas, and in particular relates to a high-power coaxial feed. Background Art

[0002] High-orbit SAR satellites can combine the orbital advantages of geosynchronous orbit with the advantages of SAR satellites' strong penetration ability and being unaffected by meteorological conditions and darkness. my country has included high-orbit SAR satellites in the "Medium- and Long-Term Development Plan for National Civilian Space Infrastructure Construction". High-orbit SAR satellites have the ability to revisit observations of most parts of my country with time intervals of hours, which can effectively meet the needs of disaster emergency monitoring, while taking into account the application needs of industries such as land resources, earthquake, water conservancy, meteorology, ocean, environmental protection, agriculture, and forestry.

[0003] Since the distance between high-orbit SAR satellites and the earth is relatively far, large-scale antenna technology and high-power feed channel technology are the core technologies of high-orbit SAR satellites. At the same time, considering the need to form a certain number of beams and the high-power bearing capacity of each channel, high-orbit SAR satellites require antenna arrays of a certain scale. Currently, most of the high-power channels on the satellite use waveguide systems. When the frequency is relatively low, the waveguide is large and heavy, which cannot meet the satellite's requirements for weight and layout of more channels. At the same time, the existing coaxial feed source cannot meet the ultra-high power of centralized feeding of high-orbit SAR satellites due to the micro-discharge or low-pressure discharge threshold limit. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a high-power coaxial feed that can solve the technical problem that the existing coaxial feed cannot be applied to ultra-high power centralized feeding of high-orbit SAR satellites due to micro-discharge or low-pressure discharge threshold limitations.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions to achieve the above problems:

[0006] A high-power coaxial feed source comprises a double-ridged horn opening section, a ridge waveguide conversion section and a coaxial waveguide conversion section which are coaxially arranged and connected in sequence, wherein a stepped ridge section with a hollow interior is vertically arranged on the inner surface of one lateral side wall of the ridge waveguide conversion section, and an arc-shaped ridge section with a hollow interior is vertically arranged on the inner surfaces of both lateral side walls of the double-ridged horn opening section, wherein the top of the stepped ridge section is connected to the bottom end of the arc-shaped ridge section on the same side, and the bottom end of the stepped ridge section extends into the coaxial waveguide conversion section, and a bottom cover plate is installed at the bottom end of the coaxial waveguide conversion section;

[0007] A coaxial inner conductor is installed at the center of the bottom cover plate, a dielectric body is wrapped on the outside of the coaxial inner conductor, the top of the coaxial inner conductor and the dielectric body penetrate the bottom cover plate and extend into the coaxial waveguide conversion section, a mounting base coaxially arranged with the coaxial inner conductor is arranged on the lower surface of the bottom cover plate, a coaxial outer conductor is installed on the mounting base, and the bottom ends of the coaxial inner conductor and the coaxial outer conductor are connected to the RF coaxial connector plug;

[0008] A connecting block is integrally arranged on the upper surface of the stepped ridge section bottom plate, and a threaded hole is vertically processed on the connecting block and passes through the bottom of the connecting block. The threaded hole is coaxially arranged with the coaxial inner conductor, and the coaxial inner conductor extends out of the top of the dielectric body and extends into the threaded hole to be threadedly connected with the connecting block.

[0009] The present invention also includes the following technical features:

[0010] The lateral outer sides of a pair of the arc-shaped ridge segments are open, and the two lateral side walls of the double-ridged horn opening segment are both provided with first strip windows matching the height and width of the arc-shaped ridge segments along the vertical center axis, and the open end edges of the pair of arc-shaped ridge segments are respectively fixedly connected to the edges of the first strip windows on the same side;

[0011] The lateral outer side and the top of the stepped ridge segment are open, and the side wall of the ridge waveguide transformation segment on which the stepped ridge segment is installed is provided with a second strip window along the vertical center axis that matches the height and width of the stepped ridge segment, the top of the second strip window is connected to the bottom end of the first strip window on the same side, the edge of the lateral outer side of the stepped ridge segment is fixedly connected to the edge of the second strip window, and the top edge of the stepped ridge segment is fixedly connected to the bottom edge of the arc-shaped ridge segment on the same side.

[0012] A vent hole coaxially arranged with the threaded hole is vertically opened on the upper edge of the connection block, the bottom end of the vent hole is connected with the top end of the threaded hole, and the top end of the vent hole passes through the top of the connection block and is connected with the outside.

[0013] The dielectric body comprises an inner dielectric body and an outer dielectric body, the inner dielectric body is in the shape of a truncated cone, the bottom of the inner dielectric body is close to the upper surface of the bottom cover plate, and the top of the inner dielectric body is close to the lower surface of the connecting block; the top of the outer dielectric body is integrally fixedly connected with the bottom of the inner dielectric body, and the bottom of the outer dielectric body extends out of the bottom cover plate to the bottom end edge of the coaxial inner conductor.

[0014] The taper range of the inner dielectric body is 1:6-1:7; the height ratio of the inner dielectric body to the distance between the upper surface of the inner dielectric body and the lower surface of the connecting block is 6:1.

[0015] The open section of the double-ridged horn includes an open section and a straight section, the vertical height ratio of the open section and the straight section is 1:2, and the lateral width ratio of the open section and the straight section is 5:8.

[0016] The arc-shaped ridge segment occupies two-thirds of the overall height of the open segment of the double-ridged horn, and the length ratio of the longitudinal width of the arc-shaped ridge segment to the longitudinal width of the open segment of the double-ridged horn is 1:6.

[0017] The thickness of the step ridge section is 20 mm to 40 mm, and the step ridge section includes a first step, a second step and a third step connected to each other, the height ratio of the first step, the second step and the third step is 13:11:5, and the lateral width ratio of the first step, the second step and the third step is 2:3:8;

[0018] The length ratio of the longitudinal width of the stepped ridge segment to the longitudinal width of the ridge waveguide transformation segment is 1:6.

[0019] The length ratio of the lateral width of the first step of the stepped ridge segment to the lateral width of the bottom of the arc-shaped ridge segment is 2:3.

[0020] The material of the dielectric body is the same as that of the radio frequency cable connector.

[0021] Compared with the prior art, the present invention has the following technical effects:

[0022] (1) The present invention adopts the integrated design of electric field and air path, the coaxial design of coaxial inner conductor and threaded hole, and the integrated use of stepped ridge segment and arc ridge segment to realize the conversion of electromagnetic signal from coaxial system to waveguide system. At the same time, through the exponentially opened arc ridge segment design and the double ridge horn opening segment, the conversion of electromagnetic signal from waveguide system to free space is realized. When used in low frequency band, it can be applied to a certain scale of feed source array. Compared with traditional satellite carrier waveguide high-power feed source related products, when the system is connected with other products, it avoids the problem of difficult layout of using a large number of waveguides and greatly reduces the weight.

[0023] (2) The unique air hole design of the present invention can effectively discharge the gas in the threaded hole, thereby avoiding the sudden discharge of gas in the threaded hole, which would locally produce a low-pressure environment and induce low-pressure discharge. At the same time, the metal debris left in the threaded hole can be effectively discharged to the outside of the feed source, thereby avoiding micro-discharge induced by excess particulate metal.

[0024] (3) The truncated cone structure of the dielectric body in the present invention and the dielectric selection with the same RF cable connector can ensure that the trace gas generated by the dielectric body due to the increase in temperature of the coaxial inner conductor when the feed source is working at high power can be discharged along a specific gas path, and can also ensure that the electric field is extremely weak at the top of the dielectric body, and no gas is discharged in the area with strong electric field strength, thereby improving the discharge threshold, so that the present invention can be applied to the ultra-high power feed source array of high-orbit SAR satellite centralized feeding, so that the micro-discharge threshold of the satellite-borne coaxial feed reaches 10,000 watts, which is 10 times higher than the discharge threshold of traditional satellite-borne coaxial feed related products. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a sectional view of the overall structure of the present invention.

[0026] Figure 2 The present invention Figure 1 Schematic diagram of part of the structure.

[0027] Figure 3 It is a perspective view of the overall structure of the present invention.

[0028] Figure 4 It is a schematic diagram of the electric field simulation results at the coaxial waveguide conversion section of the present invention.

[0029] The meaning of each number in the figure is:

[0030] 1. double-ridge horn opening section, 2. ridge waveguide conversion section, 3. coaxial waveguide conversion section, 4. stepped ridge section, 5. arc-shaped ridge section, 6. bottom cover plate, 7. coaxial outer conductor, 8. coaxial inner conductor, 9. dielectric body, 10. first strip window, 11. second strip window;

[0031] 111, opening segment, 112, straight segment;

[0032] 41. connecting block, 42. threaded hole, 43. vent hole, 44. first step, 45. second step, 46. third step;

[0033] 91. Inner medium, 92. Outer medium.

[0034] The specific contents of the present invention are further explained in detail below in conjunction with embodiments. DETAILED DESCRIPTION

[0035] In accordance with the above technical scheme, specific embodiments of the present invention are given below. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical scheme of this application fall within the protection scope of the present invention.

[0036] In the present invention, unless otherwise specified, directional words such as "up", "down", "left", "right", etc. are generally defined based on the drawings in the corresponding accompanying drawings, "inside" and "outside" refer to the inside and outside of the corresponding component contours, and "longitudinal", "lateral" and "vertical" refer to the directions marked in the drawings.

[0037] Example:

[0038] This embodiment provides a high-power coaxial feed source, such as Figures 1 to 3As shown, it comprises a double-ridge horn opening section 1, a ridge waveguide transformation section 2 and a coaxial waveguide transformation section 3 which are coaxially arranged and connected in sequence, a stepped ridge section 4 with an internal hollow is vertically arranged on the inner surface of one lateral side wall of the ridge waveguide transformation section 2, and an arc-shaped ridge section 5 with an internal hollow is vertically arranged on the inner surfaces of both lateral side walls of the double-ridge horn opening section 1, the top of the stepped ridge section 4 is connected to the bottom end of the arc-shaped ridge section 5 on the same side, the bottom end of the stepped ridge section 4 extends into the coaxial waveguide transformation section 3, and a bottom cover plate 6 is installed at the bottom end of the coaxial waveguide transformation section 3;

[0039] A coaxial inner conductor 8 is installed at the center of the bottom cover plate 6, and a dielectric body 9 is wrapped on the outside of the coaxial inner conductor 8. The top ends of the coaxial inner conductor 8 and the dielectric body 9 penetrate the bottom cover plate 6 and extend into the coaxial waveguide conversion section 3. A mounting base coaxially arranged with the coaxial inner conductor 8 is provided on the lower surface of the bottom cover plate 6, and a coaxial outer conductor 7 is installed on the mounting base. The bottom ends of the coaxial inner conductor 8 and the coaxial outer conductor 7 are connected to the RF coaxial connector plug;

[0040] A connecting block 41 is integrally provided on the upper surface of the bottom plate of the stepped ridge section 4. A threaded hole 42 is vertically processed on the connecting block 41 and passes through the bottom of the connecting block. The threaded hole 42 is coaxially arranged with the coaxial inner conductor 8. The coaxial inner conductor 8 extends out of the top of the dielectric body 9 and extends into the threaded hole 42 to be threadedly connected to the connecting block 41.

[0041] In this embodiment, the bottom ends of the coaxial outer conductor 7 and the coaxial inner conductor 8 are coaxial outlets, which serve as ports for connecting high-power feed sources to other external devices. In this embodiment, they are matched with RF coaxial connector plugs. The top end of the coaxial inner conductor 8 is electrically connected to the ridge waveguide transformation section 2 through a threaded hole 42, and then the electromagnetic signal is radiated into space through the double-ridge horn open section 1.

[0042] As a preferred solution of this embodiment, in this embodiment, the lateral outer sides of a pair of arc-shaped ridge segments 5 are open, and the two lateral side walls of the double-ridged horn open segment 1 are provided with first strip windows 10 matching the height and width of the arc-shaped ridge segment 5 along the vertical center axis, and the open end edges of the pair of arc-shaped ridge segments 5 are respectively fixedly connected to the edges of the first strip windows 10 on the same side;

[0043] The lateral outer side and the top of the stepped ridge segment 4 are open, and the side wall of the ridge waveguide transformation section 2 on which the stepped ridge segment 4 is installed is provided with a second strip window 11 along the vertical center axis that matches the height and width of the stepped ridge segment 4, and the top of the second strip window 11 is connected to the bottom end of the first strip window 10 on the same side, and the edge of the lateral outer side of the stepped ridge segment 4 is fixedly connected to the edge of the second strip window 11, and the top edge of the stepped ridge segment 4 is fixedly connected to the bottom edge of the arcuate ridge segment 5 on the same side. The stepped ridge segment 4 realizes the conversion of the electromagnetic signal from the coaxial system to the waveguide system through the design of the step structure, and at the same time realizes the conversion of the electromagnetic signal from the waveguide system to the free space through the design of the arcuate ridge segment 5 in the form of exponential opening and the double-ridge horn opening section 1.

[0044] As a preferred solution of this embodiment, a vent hole 43 coaxially arranged with the threaded hole 42 is vertically opened on the upper edge of the connecting block 41 in this embodiment, the bottom end of the vent hole 43 is connected with the top end of the threaded hole 42, and the top end of the vent hole 43 passes through the top of the connecting block 41 and is connected with the outside of the feed source through the stepped ridge section 4. The gas in the threaded hole 42 can be effectively discharged through the vent hole 43, thereby avoiding the sudden discharge of the gas in the threaded hole 42, the local low-pressure environment, and the induction of low-pressure discharge. When the coaxial inner conductor 8 is installed and connected to the threaded hole 42, the metal debris generated by the rotation can be effectively discharged to the outside of the feed source through the vent hole 43 due to the pressure difference after the satellite is launched out of the atmosphere, thereby avoiding the micro-discharge induced by the excess particulate metal. According to the principle of skin effect, high-frequency electromagnetic waves only exist on the surface of the inner conductor, and the vent hole 43 has no effect on the electric field distribution inside the high-power feed source, and has no effect on the transmission of electromagnetic signals.

[0045] As a preferred solution of this embodiment, the dielectric body 9 in this embodiment includes an inner dielectric body 91 and an outer dielectric body 92. The inner dielectric body 91 is in the shape of a truncated cone. According to the distribution of the electric field inside the feed source, the truncated cone shape and the electric field distribution inside the coaxial waveguide conversion section 3 are designed to be conformal. The bottom of the inner dielectric body 91 is close to the upper surface of the bottom cover plate 6, and the top of the inner dielectric body 91 is close to the lower surface of the connecting block 41; the top of the outer dielectric body 92 is integrally fixedly connected to the bottom of the inner dielectric body 91, and the bottom of the outer dielectric body 92 extends out of the bottom cover plate 6 to the bottom edge of the coaxial inner conductor 8.

[0046] Further, the taper range of the inner dielectric body 91 is 1:6 to 1:7; the height ratio of the inner dielectric body 91 to the distance between the upper surface of the inner dielectric body 91 and the lower surface of the connecting block 41 is 6:1. The taper design of the inner dielectric body 91 and the height ratio between the inner dielectric body 91 and the lower surface of the connecting block 41, when the feed source is working at high power, the trace gas generated by the dielectric body 9 when the temperature of the coaxial inner conductor 8 of the joint rises can be discharged from the top of the dielectric body 9 along the interface between the dielectric body 9 and the coaxial inner conductor 8, such as Figure 4 As shown, the structural design of the dielectric body 9 can ensure that the electric field is extremely weak at the top of the dielectric body 9, and no gas is discharged in the area with a relatively strong electric field, thereby increasing the discharge threshold.

[0047] As a preferred solution of this embodiment, the open section 1 of the double-ridged horn in this embodiment includes an open section 111 and a straight section 112, the vertical height ratio of the open section 111 and the straight section 112 is 1:2, and the lateral width ratio of the open section 111 and the straight section 112 is 5:8; further, the arcuate ridge section 5 occupies two-thirds of the overall height of the open section 1 of the double-ridged horn, and the length ratio of the longitudinal width of the arcuate ridge section 5 to the longitudinal width of the open section 1 of the double-ridged horn is 1:6, so that the main mode impedance of the ridge waveguide is matched with the impedance of the coaxial line, while the feed source is smaller in size and lighter in weight.

[0048] As a preferred solution of this embodiment, the thickness of the stepped ridge segment 4 in this embodiment is 20 mm to 40 mm, and the stepped ridge segment 4 includes a first step 44, a second step 45 and a third step 46 that are interconnected. The height ratio of the first step 44, the second step 45 and the third step 46 is 13:11:5, and the lateral width ratio of the first step 44, the second step 45 and the third step 46 is 2:3:8; the length ratio of the longitudinal width of the stepped ridge segment 4 to the longitudinal width of the ridge waveguide transformation segment 2 is 1:6, and different step heights and thickness ranges of the stepped ridge segment 4 can achieve impedance matching of the feed source in different frequency bands, thereby realizing the conversion of the signal from the coaxial system to the waveguide system.

[0049] Furthermore, the length ratio of the lateral width of the first step 44 of the stepped ridge segment 4 to the lateral width of the bottom of the arcuate ridge segment 5 is 2:3, ensuring that the electromagnetic signal can be transmitted along the stepped ridge segment 4 to the arcuate ridge segment 5, thereby realizing the conversion of the electromagnetic signal from the waveguide system to the free space.

[0050] As a preferred solution of this embodiment, the material of the dielectric body 9 in this embodiment is the same as the material of the dielectric of the RF cable connector, which can ensure that the trace gas generated by the dielectric body 9 due to the increase in temperature of the coaxial inner conductor 8 when the feed source is working at high power can be discharged along a specific gas path.

[0051] In this embodiment, the electric field and air path integrated design and the reasonable vent design are adopted, and the pulse withstand power of the high-power coaxial feed can reach 10,000 watts, which is an order of magnitude higher than the discharge threshold of traditional satellite-borne coaxial feed related products. The problem that the existing coaxial feed cannot be used in the ultra-high power feed array of the centralized feeding high-orbit SAR system due to insufficient micro-discharge or low-pressure discharge threshold is overcome. Compared with the traditional waveguide high-power coaxial feed, when connected with other equipment, it has the advantages of easy layout, including small size and light weight.

Claims

1. A high-power coaxial feed, characterized in that: The invention comprises a double-ridged horn opening section (1), a ridge waveguide conversion section (2) and a coaxial waveguide conversion section (3) which are coaxially arranged and connected in sequence, wherein a stepped ridge section (4) with a hollow interior is vertically arranged on the inner surface of a lateral side wall of the ridge waveguide conversion section (2), and an arc-shaped ridge section (5) with a hollow interior is vertically arranged on the inner surfaces of both lateral side walls of the double-ridged horn opening section (1), the top of the stepped ridge section (4) is connected to the bottom end of the arc-shaped ridge section (5) on the same side, the bottom end of the stepped ridge section (4) extends into the coaxial waveguide conversion section (3), and a bottom cover plate (6) is installed at the bottom end of the coaxial waveguide conversion section (3); A coaxial inner conductor (8) is installed at the center of the bottom cover plate (6), and a dielectric body (9) is wrapped around the outer side of the coaxial inner conductor (8). The top ends of the coaxial inner conductor (8) and the dielectric body (9) penetrate through the bottom cover plate (6) and extend into the coaxial waveguide conversion section (3). A mounting base coaxially arranged with the coaxial inner conductor (8) is arranged on the lower surface of the bottom cover plate (6), and a coaxial outer conductor (7) is installed on the mounting base. The bottom ends of the coaxial inner conductor (8) and the coaxial outer conductor (7) are connected to a radio frequency coaxial connector plug. A connecting block (41) is integrally provided on the upper surface of the bottom plate of the stepped ridge section (4), and a threaded hole (42) penetrating the bottom of the connecting block is processed vertically on the connecting block (41). The threaded hole (42) is coaxially arranged with the coaxial inner conductor (8), and the coaxial inner conductor (8) extends out of the top end of the dielectric body (9) and extends into the threaded hole (42) to be threadedly connected with the connecting block (41).

2. The high-power coaxial feed according to claim 1, characterized in that: The lateral outer sides of the pair of arc-shaped ridge segments (5) are open, and the two lateral side walls of the double-ridged horn open segment (1) are provided with first strip windows (10) along the vertical center axis that match the height and width of the arc-shaped ridge segments (5), and the open end edges of the pair of arc-shaped ridge segments (5) are respectively fixedly connected to the edges of the first strip windows (10) on the same side; The lateral outer side and the top of the stepped ridge segment (4) are open, and the side wall of the ridge waveguide transformation segment (2) on which the stepped ridge segment (4) is installed is provided with a second strip window (11) along the vertical center axis that matches the height and width of the stepped ridge segment (4), the top of the second strip window (11) is connected to the bottom end of the first strip window (10) on the same side, the edge of the lateral outer side of the stepped ridge segment (4) is fixedly connected to the edge of the second strip window (11), and the top edge of the stepped ridge segment (4) is fixedly connected to the bottom edge of the arc-shaped ridge segment (5) on the same side.

3. The high-power coaxial feed according to claim 1, characterized in that: The connection block (41) is provided with a vent hole (43) coaxially arranged with the threaded hole (42) in a vertical direction, the bottom end of the vent hole (43) is connected to the top end of the threaded hole (42), and the top end of the vent hole (43) passes through the top of the connection block (41) and is connected to the outside.

4. The high-power coaxial feed according to claim 1, characterized in that: The dielectric body (9) comprises an inner dielectric body (91) and an outer dielectric body (92); the inner dielectric body (91) is in the shape of a truncated cone; the bottom of the inner dielectric body (91) is close to the upper surface of the bottom cover plate (6), and the top of the inner dielectric body (91) is close to the lower surface of the connecting block (41); the top of the outer dielectric body (92) is integrally fixedly connected to the bottom of the inner dielectric body (91), and the bottom of the outer dielectric body (92) extends out of the bottom cover plate (6) to the bottom edge of the coaxial inner conductor (8).

5. The high-power coaxial feed according to claim 4, characterized in that: The taper range of the inner dielectric body (91) is 1:6-1:7; the height ratio of the inner dielectric body (91) and the distance between the upper surface of the inner dielectric body (91) and the lower surface of the connecting block (41) is 6:

1.

6. The high-power coaxial feed according to claim 1, characterized in that: The double-ridged horn open section (1) comprises an open section (111) and a straight section (112); the vertical height ratio of the open section (111) and the straight section (112) is 1:2, and the horizontal width ratio of the open section (111) and the straight section (112) is 5:

8.

7. The high-power coaxial feed according to claim 1, characterized in that: The arc-shaped ridge segment (5) occupies two thirds of the overall height of the double-ridged horn open segment (1), and the length ratio of the longitudinal width of the arc-shaped ridge segment (5) to the longitudinal width of the double-ridged horn open segment (1) is 1:

6.

8. The high-power coaxial feed according to claim 1, characterized in that: The thickness of the stepped ridge segment (4) is 20 mm to 40 mm. The stepped ridge segment (4) comprises a first step (44), a second step (45) and a third step (46) connected to each other. The height ratio of the first step (44), the second step (45) and the third step (46) is 13:11:

5. The lateral width ratio of the first step (44), the second step (45) and the third step (46) is 2:3:

8. The length ratio of the longitudinal width of the stepped ridge segment (4) to the longitudinal width of the ridge waveguide transformation segment (2) is 1:

6.

9. The high-power coaxial feed according to claim 8, characterized in that: The length ratio of the transverse width of the first step (44) of the stepped ridge segment (4) to the transverse width of the bottom of the arc-shaped ridge segment (5) is 2:

3.

10. The high-power coaxial feed according to claim 1, characterized in that: The material of the dielectric body (9) is the same as that of the dielectric body of the radio frequency cable connector.

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