Electric waveguide switch with artificial magnetic conductor structure

Abstract

The utility model discloses an electric waveguide switch with an artificial magnetic conductor structure, and relates to the technical field of waveguide transmission devices for microwave communication. Comprising an electric driving assembly and a microwave switch assembly, the microwave switch assembly comprises a microwave rotor and a microwave stator, a bent microwave path is formed in the microwave rotor, a standard waveguide port is formed in the microwave stator, the microwave rotor is installed in the microwave stator through a bearing, and a gap is formed between the microwave rotor and the microwave stator. Under the driving of the electric driving assembly, the microwave rotor circularly rotates in the center of the microwave stator, and when the two ports of the bent microwave channel are connected with any two standard waveguide ports on the microwave stator at the same time, the waveguide switch is in an open state, otherwise, the waveguide switch is in a closed state. A quarter-wavelength transmission structure and an artificial magnetic conductor AMC structure are formed on the microwave stator, and electromagnetic wave leakage between the microwave stators is restrained through the quarter-wavelength transmission structure and the artificial magnetic conductor AMC structure.

Description

Technical Field

[0001] The utility model relates to the technical field of waveguide transmission devices for microwave communications, in particular to an electric waveguide switch with an artificial magnetic conductor structure and good transmission effect. Background Art

[0002] Waveguide switches are important components for signal path control. Their main function is to select the link transmission channel by switching microwave channels, thereby greatly improving the reliability of the link system. Compared with other waveguide switches, electromechanical microwave waveguide switches have the characteristics of low standing wave, small insertion loss, and large power capacity. They are widely used as backup path switches for high-power output radars and communication transmitters; they are also used in microwave transmission equipment and microwave measurement and control projects in satellite communication systems.

[0003] In the electric waveguide switch of the prior art, in order to extend the service life of the waveguide switch, there is generally a gap of a certain width between the inner wall of the cavity (stator) and the rotating shaft (rotor), so that the rotating shaft can rotate in the cavity without friction with the cavity. This causes electromagnetic waves to leak into the gap, resulting in poor signal transmission effect. Utility Model Content

[0004] The technical problem to be solved by the utility model is how to provide an electric waveguide switch with an artificial magnetic conductor structure which can effectively choke electromagnetic waves, reduce electromagnetic wave leakage and improve transmission effect.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: an electric waveguide switch with an artificial magnetic conductor structure, comprising an electric drive component and a microwave switch component, the microwave switch component comprising a microwave rotor and a microwave stator, a curved microwave passage is formed inside the microwave rotor, a standard waveguide port is formed on the microwave stator, the microwave rotor is installed in the microwave stator through a bearing, a gap is formed therebetween, and under the drive of the electric drive component, the microwave rotor circulates and rotates at the center of the microwave stator; a quarter-wavelength transmission structure and an artificial magnetic conductor AMC structure are formed on the microwave stator, and the leakage of electromagnetic waves between the microwave stators is suppressed by the quarter-wavelength transmission structure and the artificial magnetic conductor AMC structure.

[0006] A further technical solution is that the electric drive assembly includes a drive motor and a casing top cover, the motor is arranged inverted, and the power output end of the drive motor is connected to an extension column, the extension column passes through the casing top cover and enters into the groove-type cover plate, and the lower end of the extension column extends to the microwave switch assembly on the lower side of the groove-type cover plate, the casing top cover is fixedly connected to the cover plate, and the drive motor is fixedly connected to the casing top cover.

[0007] A further technical solution is that: the microwave switch assembly comprises a microwave rotor and a microwave stator, the microwave stator comprises a microwave cavity, the microwave stator comprises a microwave cavity and a cavity flange, the upper and lower end surfaces of the microwave cavity are each formed with a through hole connected to the inner cavity, wherein the through hole located on the upper end surface of the microwave cavity is used for the microwave rotor to enter, and the through hole located on the lower end surface of the microwave cavity is closed by a bottom cover, the left, right, front and rear end surfaces of the microwave cavity are each formed with a through hole connected to the inner cavity, and a cavity flange is respectively arranged in the through holes located on the front, rear, left and right end surfaces of the microwave cavity, and a standard waveguide port is respectively arranged on the inner side and the outer side of the cavity flange, and the two standard waveguide ports are connected to each other; the microwave rotor comprises a rotating shaft, and two curved microwave passages are formed inside the rotating shaft, and the rotating shaft circulates and rotates in the center of the microwave cavity under the drive of the driving motor, and when the two ports of the microwave passage are simultaneously connected to the standard waveguide ports on any two cavity flanges, the waveguide switch is in an open state, otherwise it is in a closed state.

[0008] A further technical solution is that the cavity flange includes a first truncated cone, a first standard waveguide port is formed at the center of the outer surface of the first truncated cone, a first rectangular boss is formed on the inner surface of the first truncated cone, a second rectangular boss is formed on the inner surface of the first rectangular boss, a second standard waveguide port is formed at a position on the second rectangular boss corresponding to the first standard waveguide port, a straight microwave channel is formed between the first standard waveguide port and the second standard waveguide port, the surface of the second rectangular boss corresponding to the rotating shaft is an arcuate surface adapted to the outer surface of the rotating shaft, a gap is formed between the arcuate surface and the outer surface of the rotating shaft, a plurality of artificial magnetic conductors AMC are formed on the inner surface of the first rectangular boss on the outer periphery of the second rectangular boss, and a gap is formed between the upper surface of the artificial magnetic conductor AMC and the outer surface of the rotating shaft.

[0009] A further technical solution is that: the rotating shaft includes an upper rotating shaft and a lower rotating shaft, the upper rotating shaft and the lower rotating shaft are fixed together by screws, the upper rotating shaft includes a first rotating shaft cylinder, a first plug-in column is fixed on the upper surface of the first rotating shaft cylinder, a bearing is sleeved on the middle and lower parts of the first plug-in column, and the lower end of the extension column is plugged into the end of the first plug-in column; the lower rotating shaft includes a second rotating shaft cylinder, a second plug-in column is fixed on the lower surface of the second rotating shaft cylinder, the second plug-in column is fixed to the cavity through a bearing, two microwave passages are formed on the upper surface of the second rotating shaft cylinder, and the two side ports of the microwave passages are located on the side walls of the second rotating shaft cylinder.

[0010] The beneficial effect of adopting the above technical solution is that: in order to ensure that electromagnetic waves propagate in a specified direction and reduce leakage, the waveguide switch described in the present application adds a quarter-wave transmission structure and an artificial magnetic conductor AMC structure between the cavity flange and the shaft to prevent electromagnetic waves from leaking out, wherein the artificial magnetic conductor AMC structure is a structure formed by a periodic arrangement of cubes, which has a stopband characteristic to form an open circuit state, and then the conversion from open circuit to short circuit is realized by the gap formed by the quarter-wavelength smooth surface extending outward from the port. Thus, the leakage of electromagnetic waves is suppressed, and the effect of being physically disconnected but electrically connected is achieved, so that the transmission of electromagnetic waves in the waveguide is almost unaffected, and the transmission quality of electromagnetic waves is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0012] Figure 1 It is a schematic diagram of the structure of the waveguide switch according to the embodiment of the utility model;

[0013] Figure 2 It is a schematic diagram of the exploded structure of the waveguide switch described in the embodiment of the utility model;

[0014] Figure 3 It is a schematic diagram of the main structure of the waveguide switch according to the embodiment of the utility model;

[0015] Figure 4 It is a left-side structural schematic diagram of the waveguide switch described in the embodiment of the utility model;

[0016] Figure 5 It is a right side structural schematic diagram of the waveguide switch described in the embodiment of the utility model;

[0017] Figure 6 is a schematic diagram of a top view of the waveguide switch according to an embodiment of the utility model;

[0018] Figure 7 It is a bottom view structural schematic diagram of the waveguide switch described in the embodiment of the utility model;

[0019] Figure 8 is a schematic cross-sectional structural diagram of a waveguide switch according to an embodiment of the utility model;

[0020] Fig. 9 It is a schematic diagram of the structure of the motor cover in the waveguide switch according to the embodiment of the utility model;

[0021] Fig.10 It is a schematic diagram of the structure of the housing top cover in the waveguide switch according to the embodiment of the utility model;

[0022] Fig.11It is a structural schematic diagram of a groove-shaped cover plate in a waveguide switch according to an embodiment of the utility model;

[0023] Fig.12 It is a schematic structural diagram of an extension column in a waveguide switch according to an embodiment of the utility model;

[0024] Fig.13 It is a schematic diagram of the structure of the aviation plug in the waveguide switch according to the embodiment of the utility model;

[0025] Fig.14 It is a structural schematic diagram of a touch switch in a waveguide switch according to an embodiment of the utility model;

[0026] Fig.15 It is a schematic structural diagram of a microwave cavity in a waveguide switch according to an embodiment of the utility model;

[0027] Fig.16 It is a schematic structural diagram of a cavity flange in a waveguide switch according to an embodiment of the utility model;

[0028] Fig.17 It is an enlarged structural schematic diagram of the first type of cavity flange in the waveguide switch described in the embodiment of the utility model;

[0029] Fig.18 It is a cross-sectional enlarged structural schematic diagram of the first type of cavity flange in the waveguide switch according to the embodiment of the utility model;

[0030] Fig.19 It is an enlarged structural schematic diagram of the second type of cavity flange in the waveguide switch according to the embodiment of the utility model;

[0031] Fig. 20 It is a structural schematic diagram of the bottom cover of the waveguide switch according to the embodiment of the utility model;

[0032] Fig.21 It is a schematic diagram of the structure of the rotating shaft in the waveguide switch according to the embodiment of the utility model;

[0033] Fig. 22 It is a schematic diagram of the exploded structure of the rotating shaft in the waveguide switch according to the embodiment of the utility model;

[0034] Fig.23 It is a schematic structural diagram of the upper half of the rotating shaft in the rotating shaft of the embodiment of the utility model;

[0035] Fig.24 It is a schematic structural diagram of the lower half of the rotating shaft in the rotating shaft of the embodiment of the utility model;

[0036] Among them: 1. Microwave passage; 2. Drive motor; 3. Housing top cover; 4. Extension column; 5. Groove cover; 6. Motor cover; 7. Position sensor; 8. Limit column; 9. Aviation plug; 10. Microwave cavity; 11. Bottom cover;

[0037] 12, cavity flange; 12-1, first truncated cone; 12-2, first standard waveguide port; 12-3, first rectangular boss; 12-4, second rectangular boss; 12-5, second standard waveguide end; 12-6, arc surface; 12-7, artificial magnetic conductor AMC;

[0038] 13, rotating shaft; 13-1, upper rotating shaft; 13-1-1, first rotating shaft cylinder; 13-1-2, first plug-in column; 13-2, lower rotating shaft; 13-2-1, second rotating shaft cylinder; 13-2-2, second plug-in column;

[0039] 14. Sealing ring; 15. Screw; 16. Bearing. DETAILED DESCRIPTION

[0040] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0042] like Figure 1-Figure 8 As shown, the embodiment of the utility model discloses an electric waveguide switch with an artificial magnetic conductor structure, including two major parts: an electric drive component and a microwave switch component. The microwave switch component mainly includes a microwave rotor and a microwave stator. A curved microwave passage 1 is formed inside the microwave rotor. A standard waveguide port is formed on the microwave stator. The microwave rotor is installed in the microwave stator through a bearing. There is a radial gap between the two. Generally, the length of the radial gap is a quarter wavelength. Under the drive of the electric drive component, the microwave rotor circulates in the center of the microwave stator. When the two ports of the curved microwave passage 1 are simultaneously connected to any two standard waveguide ports on the microwave stator, the waveguide switch is in an open state, otherwise it is in a closed state. A quarter-wavelength transmission structure and an artificial magnetic conductor AMC structure are formed on the microwave stator. The leakage of electromagnetic waves between the microwave stators is suppressed by the quarter-wavelength transmission structure and the artificial magnetic conductor AMC structure.

[0043] like Figure 2 as well as Figure 8-Figure 11 As shown, the electric drive assembly includes a drive motor 2 and a housing top cover 3. The drive motor 2 is inverted and its power output end is downwardly arranged. The power output end of the drive motor 2 is connected to an extension column 4. The specific structure of the extension column is as follows Fig.12 As shown, the extension column 4 passes through the housing top cover 3 and enters into the grooved cover plate 5, and the lower end of the extension column 4 extends to the microwave switch assembly at the lower side of the grooved cover plate 5, the housing top cover 3 is fixedly connected to the grooved cover plate 5, and the drive motor 2 is fixedly connected to the housing top cover 3. A motor cover 6 is provided on the outer side of the drive motor 2, and the motor cover 6 is fixedly connected to the housing top cover 3 to form a storage space for the drive motor 2.

[0044] like Figure 2 as well as Figure 8 As shown, the housing top cover 3 and the groove-shaped cover plate 5 are fixedly connected to form a space for accommodating the position sensor 7. The position sensor 7 is located in the position sensor accommodating space, and the position sensor 7 is in direct contact with the extension column 4 to sense the rotation position of the extension column 4. The position sensor 7 is a touch switch, and two touch switches are provided, which are respectively located on both sides of the extension column 4, and the movable end of the touch switch is in direct contact with the extension column 4.

[0045] A vertical limiting column 8 is arranged in the accommodation space of the position sensor, and the limiting column 8 is used to ensure that after the microwave rotor is in place, the standard waveguide port of the waveguide path on the microwave rotor is aligned with the standard waveguide port on the microwave stator. An aviation plug mounting hole is formed on one side wall of the groove-shaped cover plate 5, and an aviation plug 9 is arranged in the aviation plug mounting hole. The driving motor 2 and the position sensor 7 are connected to the aviation plug 9 through a wire, and the aviation plug 9 is used to connect to a peripheral control device. The specific structure of the aviation plug is as follows Fig.13 As shown, the specific structure of the touch switch is as follows Fig.14 shown.

[0046] The microwave switch assembly includes a microwave rotor and a microwave stator. The microwave stator includes a microwave cavity 10 and a cavity flange 12. The specific structure of the microwave cavity 10 is as follows: Fig.15 As shown. The upper and lower end surfaces of the microwave cavity 10 are each formed with a through hole connected to the inner cavity, wherein the through hole located at the upper end surface of the microwave cavity 10 is used for the microwave rotor to enter, and the through hole located at the lower end surface of the microwave cavity 10 is closed by the bottom cover 11. The left, right, front and rear end surfaces of the microwave cavity 10 are each formed with a through hole connected to the inner cavity, and a sealing ring 14 is arranged between the bottom cover 11 on the lower side of the microwave cavity 10 and the microwave cavity 10. The specific structure of the bottom cover 11 is as shown in FIG. Fig.17As shown; a cavity flange 12 is provided in each of the through holes at the front, rear, left and right end surfaces of the microwave cavity 10, and the specific structure of the cavity flange Fig.16 As shown; a standard waveguide port is respectively arranged on the inner side and the outer side of each cavity flange 12, and the two standard waveguide ports are connected to each other; the microwave rotor comprises a rotating shaft 13, and two curved microwave passages 1 are formed inside the rotating shaft 13. The rotating shaft 13 circulates and rotates in the center of the microwave cavity under the drive of the driving motor 2. When the two ports of the microwave passage 1 are simultaneously connected to the standard waveguide ports on any two cavity flanges 12, the waveguide switch is in an open state, otherwise the waveguide switch is in a closed state.

[0047] The specific structure of the cavity flange 12 has at least the following two types. The first type is as follows: Figure 16-18 As shown, the cavity flange 12 includes a first truncated cone 12-1, a first standard waveguide port 12-2 is formed at the center of the outer surface of the first truncated cone 12-1, a first rectangular boss 12-3 is formed on the inner surface of the first truncated cone 12-1, and the inner surface of the first truncated cone 12-1 is a plane, a second rectangular boss 12-4 is formed on the inner side surface of the first rectangular boss 12-3, a second standard waveguide port 12-5 is formed on the second rectangular boss 12-4 at a position corresponding to the first standard waveguide port 12-2, and the first standard waveguide port 12-5 is formed on the second rectangular boss 12-4. A straight microwave channel is formed between the port 12-2 and the second standard waveguide port 12-5; the surface of the second rectangular boss 12-4 corresponding to the rotating shaft 13 is an arcuate surface 12-6 adapted to the outer surface of the rotating shaft 13; and there is a gap between the arcuate surface 12-6 and the outer surface of the rotating shaft 13; and a plurality of artificial magnetic conductors AMC12-7 are formed on the inner surface of the first rectangular boss 12-3 on the outer periphery of the second rectangular boss 12-4; and there is a gap between the upper surface of the artificial magnetic conductor AMC12-7 and the outer surface of the rotating shaft 13.

[0048] The second structure of the cavity flange 12 is as follows Fig.19 As shown, the second structure is different from the first structure in that the inner surface of the first truncated cone 12 - 1 is a trapezoidal surface, and the other structures are the same as the first structure, which will not be described here.

[0049] like Figure 20-24As shown, the shaft 13 includes an upper half shaft 13-1 and a lower half shaft 13-2, the upper half shaft 13-1 and the lower half shaft 13-2 are fixed together by screws 15, the upper half shaft 13-1 includes a first shaft cylinder 13-1-1, the upper surface of the first shaft cylinder 13-1-1 is fixed with a first plug-in column 13-1-2, the middle and lower parts of the first plug-in column 13-1-2 are sleeved with a bearing 16, the lower end of the extension column 4 is plugged into the first plug-in column 13-1-2, and the lower end of the extension column 4 is plugged into the first plug-in column 13-1-2. The end of the connecting column 13-1-2; the lower half shaft 13-2 includes a second shaft cylinder 13-2-1, a second plug-in column 13-2-2 is fixed to the lower surface of the second shaft cylinder 13-2-1, the second plug-in column 13-2-2 is fixed to the microwave cavity 10 through a bearing 16, and two microwave passages 1 are formed on the upper surface of the second shaft cylinder 13-2-1, and the two side ports of the microwave passages 1 are located on the side walls of the second shaft cylinder 13-2-1.

[0050] In this application:

[0051] Quarter transmission line: A smooth plane with a quarter wavelength extends outward around the second standard waveguide port 12-5 of the cavity flange 12. When connected to the rotating shaft 13, the plane portion forms a very thin gap with a length of about a quarter wavelength (generally a quarter wavelength of the center frequency), and the gap forms an effective radial transmission line;

[0052] Artificial magnetic conductor AMC structure: The stopband characteristics of the artificial magnetic conductor AMC structure with a periodic arrangement of a cuboid are used to form an open circuit state. The bottom surface of the artificial magnetic conductor AMC structure can be a stepped structure or a planar structure, and both can obtain the stopband characteristics.

[0053] The open circuit state (infinite resistance) formed by the artificial magnetic conductor AMC structure is converted into a short circuit resistance (extremely small resistance) at the waveguide port through the first quarter transmission line, thus providing an effective low impedance channel for the current passing through this point at the waveguide port. This prevents the leakage of electromagnetic waves, achieves the effect of being physically disconnected but electrically connected, and makes the transmission of electromagnetic waves in the waveguide almost unaffected, thus improving the transmission quality of electromagnetic waves.

Claims

1. An electrodynamic waveguide switch having an artificial magnetic conductor structure, characterized in that: The invention comprises an electric drive component and a microwave switch component, wherein the microwave switch component comprises a microwave rotor and a microwave stator, wherein a curved microwave passage (1) is formed inside the microwave rotor, and a standard waveguide port is formed on the microwave stator. The microwave rotor is mounted in the microwave stator via a bearing, and a gap is formed between the two. Under the drive of the electric drive component, the microwave rotor circulates in the center of the microwave stator, and a quarter-wavelength transmission structure and an artificial magnetic conductor AMC structure are formed on the microwave stator. The leakage of electromagnetic waves between the microwave stators is suppressed by the quarter-wavelength transmission structure and the artificial magnetic conductor AMC structure.

2. The electrodynamic waveguide switch with an artificial magnetic conductor structure as claimed in claim 1, characterized in that: The electric drive assembly comprises a drive motor (2) and a casing top cover (3); the drive motor (2) is arranged inverted; an extension column (4) is connected to a power output end of the drive motor (2); the extension column (4) passes through the casing top cover (3) and enters into a groove-shaped cover plate (5); and the lower end of the extension column (4) extends into the microwave switch assembly at the lower side of the groove-shaped cover plate (5); the casing top cover (3) is fixedly connected to the groove-shaped cover plate (5); and the drive motor (2) is fixedly connected to the casing top cover (3).

3. The electrodynamic waveguide switch with an artificial magnetic conductor structure as claimed in claim 2, characterized in that: The outer cover of the drive motor (2) is provided with a motor cover (6), and the motor cover (6) is fixedly connected to the housing top cover (3) to form a storage space for the drive motor (2).

4. The electrodynamic waveguide switch with an artificial magnetic conductor structure as claimed in claim 2, characterized in that: The housing top cover (3) and the groove-shaped cover plate (5) are fixedly connected to form a storage space for a position sensor (7); the position sensor (7) is located in the position sensor storage space, and the position sensor (7) is in direct contact with the extension column (4) for sensing the rotational position of the extension column (4).

5. The electrodynamic waveguide switch with an artificial magnetic conductor structure as claimed in claim 4, characterized in that: A vertical limiting column (8) is arranged in the accommodation space of the position sensor, and the limiting column (8) is used to ensure that after the microwave rotor is in place, the standard waveguide port of the waveguide path on the microwave rotor is aligned with the standard waveguide port on the microwave stator. An aviation plug installation hole is formed on a side wall of the groove-shaped cover plate (5), and an aviation plug (9) is arranged in the aviation plug installation hole. The drive motor (2) and the position sensor (7) are connected to the aviation plug (9) through a wire, and the aviation plug (9) is used to connect to a peripheral control device.

6. The electrodynamic waveguide switch with an artificial magnetic conductor structure as claimed in claim 4, characterized in that: The position sensor (7) is a touch switch, and two touch switches are provided, respectively located on both sides of the extension column (4), and the movable end of the touch switch is in direct contact with the extension column (4).

7. The electrodynamic waveguide switch with an artificial magnetic conductor structure as claimed in claim 2, characterized in that: The microwave switch assembly comprises a microwave rotor and a microwave stator, wherein the microwave stator comprises a microwave cavity (10) and a cavity flange (12), wherein the upper and lower end surfaces of the microwave cavity (10) are each formed with a through hole communicating with the inner cavity, wherein the through hole located at the upper end surface of the microwave cavity (10) is used for the microwave rotor to enter, and the through hole located at the lower end surface of the microwave cavity (10) is closed by a bottom cover (11), and the left, right, front and rear end surfaces of the microwave cavity (10) are each formed with a through hole communicating with the inner cavity, and the through holes located at the front, rear, left and right end surfaces of the microwave cavity (10) are each provided with a A cavity flange (12) is provided, and a standard waveguide port is provided on the inner side and the outer side of each cavity flange (12), and the two standard waveguide ports are connected to each other; the microwave rotor comprises a rotating shaft (13), and two curved microwave passages (1) are formed inside the rotating shaft (13); the rotating shaft (13) circulates in the center of the microwave cavity under the drive of the driving motor (2); when the two ports of the microwave passage (1) are simultaneously connected to the standard waveguide ports on any two cavity flanges (12), the waveguide switch is in an open state, and otherwise the waveguide switch is in a closed state.

8. The electrodynamic waveguide switch with an artificial magnetic conductor structure as claimed in claim 7, characterized in that: A sealing ring (14) is provided between the bottom cover (11) on the lower side of the microwave cavity (10) and the microwave cavity (10).

9. The electrodynamic waveguide switch with an artificial magnetic conductor structure as claimed in claim 7, characterized in that: The cavity flange (12) comprises a first truncated cone (12-1), a first standard waveguide port (12-2) is formed at the center of the outer surface of the first truncated cone (12-1), a first rectangular boss (12-3) is formed on the inner surface of the first truncated cone (12-1), a second rectangular boss (12-4) is formed on the inner side surface of the first rectangular boss (12-3), a second standard waveguide port (12-5) is formed at a position on the second rectangular boss (12-4) corresponding to the first standard waveguide port (12-2), and the first standard waveguide port (12-2) and the second standard waveguide port (12-5) are connected to each other. A straight microwave channel is formed between the guide ports (12-5); a surface of the second rectangular boss (12-4) corresponding to the rotating shaft (13) is an arcuate surface (12-6) adapted to the outer surface of the rotating shaft (13); a gap exists between the arcuate surface (12-6) and the outer surface of the rotating shaft (13); a plurality of artificial magnetic conductors AMC (12-7) are formed on the inner surface of the first rectangular boss (12-3) on the outer periphery of the second rectangular boss (12-4); a gap exists between the upper surface of the artificial magnetic conductor AMC (12-7) and the outer surface of the rotating shaft (13).

10. The electrodynamic waveguide switch with an artificial magnetic conductor structure as claimed in claim 7, characterized in that: The rotating shaft (13) comprises an upper rotating shaft (13-1) and a lower rotating shaft (13-2), wherein the upper rotating shaft (13-1) and the lower rotating shaft (13-2) are fixed together by means of screws (15), wherein the upper rotating shaft (13-1) comprises a first rotating shaft cylinder (13-1-1), wherein a first plug-in column (13-1-2) is fixed to the upper surface of the first rotating shaft cylinder (13-1-1), wherein a bearing (16) is sleeved on the middle and lower part of the first plug-in column (13-1-2), and wherein the lower end of the extension column (4) is plugged into the first plug-in column. The lower half shaft (13-2) comprises a second shaft cylinder (13-2-1), a second plug-in column (13-2-2) is fixed to the lower surface of the second shaft cylinder (13-2-1), the second plug-in column (13-2-2) is fixed to the microwave cavity (10) via a bearing (16), two microwave passages (1) are formed on the upper surface of the second shaft cylinder (13-2-1), and two side ports of the microwave passages (1) are located on the side walls of the second shaft cylinder (13-2-1).

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