Mirror surface single-cone calibration antenna for pulsed electric field measurement

Abstract

The invention discloses a mirror single-cone calibration antenna for pulsed electric field measurement, and belongs to the technical field of mirror single-cone electric field standard devices, the mirror single-cone calibration antenna comprises a frame body, a mirror plate and a cone are mounted on the frame body, the cone is suspended in a position, above the mirror plate, in the frame body in an inverted posture, and a plurality of adjusting rods are mounted on the bottom surface of the cone. Each adjusting rod is spherically hinged to the bottom surface of the cone, and the adjusting rods are driven to move up and down so as to adjust the height and angle of the cone; according to the mirror surface single-cone calibration antenna provided by the embodiment of the invention, the four groups of adjusting rods are all hinged to the cone bottom ball, and the driving pieces are arranged corresponding to the adjusting rods, so that the overall height of the cone can be adjusted by simultaneously driving the four groups of adjusting rods to move up and down, and the height of a single adjusting rod can be independently adjusted to realize fine adjustment of the angle of the cone; and each adjusting rod can rotate relative to the cone so as to adapt to the angle change of the cone, so that the connecting parts of the adjusting rods and the cone bottom are not damaged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mirror monopole electric field standard device, and specifically discloses a mirror monopole calibration antenna for pulse electric field measurement. BACKGROUND

[0002] The devices for generating standard electromagnetic pulses at home and abroad mainly include TEM chambers, GTEM chambers and mirror monopoles. The TEM chamber is limited by narrow frequency band and poor field uniformity, and is not recommended as the preferred field generator. The mirror monopole TEM chamber (also known as mirror monopole calibration antenna or mirror monopole electric field standard device) is more recommended as the field generator for calibrating time domain sensors internationally. The mirror monopole electric field standard device includes a pulse source, a mirror monopole system and a matching test instrument, wherein the pulse source generates a pulse signal and feeds it to the mirror monopole system, so as to generate a standard pulse electric field between the mirror monopole and the mirror panel, which is mainly used for calibrating electric field sensors.

[0003] As disclosed in the patent with the publication number CN109581258B and the publication date of 2020-12-18, a mirror-monopole standard pulse field reproduction system includes a mirror-monopole subsystem, a displacement monitoring-automatic adjustment subsystem, a feed-source-radio frequency subsystem and a software control subsystem. The mirror-monopole subsystem includes a cone and a mirror located below the cone, and the tip of the cone is suspended on a flange plate. The displacement monitoring-automatic adjustment subsystem includes a displacement monitoring device located below the mirror and an automatic adjustment mechanism installed at the bottom of the cone, and the displacement monitoring device is used for monitoring the displacement of the tip of the cone relative to the mirror.

[0004] The existing mirror monopole calibration antenna including the above patent has the following deficiencies. The top of the screw rod is fixedly connected with the bottom of the cone, and the screw rod is threadedly connected with the turbine, so that the worm drives the turbine to rotate, thereby driving the screw rod to move along the axial direction of the screw rod, so as to achieve the purpose of fine adjustment of the angle of the cone. However, since the two groups of screw rods are fixedly connected with the cone, and in addition, the two groups of fixed fulcrums are connected with the flange plate, when one group of screw rods is adjusted and displaced, the angle of the cone will change, thereby causing damage to the other screw rod and the two fixed fulcrums connected with the cone. In severe cases, the local deformation of the cone will occur, thereby affecting the use. SUMMARY

[0005] The present application relates to the technical field of mirror monopole electric field standard device, and specifically discloses a mirror monopole calibration antenna for pulse electric field measurement.

[0006] In order to achieve the above-mentioned purpose, the present application provides the following technical solutions: The application discloses a mirror single-cone calibration antenna for pulse electric field measurement.

[0007] The mirror single-cone calibration antenna has a guide pipe mounted on the frame body, the guide pipe is sleeved on the outside of the adjusting rod, the guide pipe limits the axial movement of the adjusting rod, and the guide pipe is rotationally connected with a sleeve pipe.

[0008] The mirror single-cone calibration antenna has a guide groove formed in the inner wall of the guide pipe in the axial direction of the guide pipe, and a guide block fixedly connected to the outer wall of the adjusting rod and extending into the guide groove.

[0009] The mirror single-cone calibration antenna has a motor arranged on the frame body and corresponding to the sleeve pipe and in transmission connection with the sleeve pipe.

[0010] The mirror single-cone calibration antenna has a guide groove extending through the lower end of the guide pipe.

[0011] The mirror single-cone calibration antenna has a stopper arranged on the guide pipe and corresponding to the guide groove and driven to extend into the guide groove.

[0012] The mirror single-cone calibration antenna has an annular protrusion protruding in the circumferential direction of the guide pipe at the upper end of the guide pipe, and a limiting hole with a diameter equal to the outer diameter of the lower part of the guide pipe vertically formed in the frame body.

[0013] The mirror single-cone calibration antenna has an adjusting disc sleeved on the upper part of the guide pipe and close to the annular protrusion, a spring sleeved on the guide pipe and between the annular protrusion and the adjusting disc, and the adjusting disc is in transmission connection with the stopper through a connecting piece, and when the adjusting disc is driven to move close to the annular protrusion, the stopper is driven to move radially inward along the guide pipe.

[0014] The mirror single-cone calibration antenna has a fixing rod fixedly connected to the adjusting disc, the lower part of the fixing rod is inclined, the lower part of the fixing rod penetrates through the stopper, and the stopper is provided with an inclined hole matched with the lower end of the fixing rod.

[0015] The mirror single-cone calibration antenna has a ball head threadedly connected to the lower end of each adjusting rod, a ball seat fixedly connected to the bottom surface of the cone and matched with the ball head, and a spherical hole matched with the ball head and formed in the ball seat, and the ball head is located in the spherical hole.

[0016] In the technical scheme, the mirror single-cone calibration antenna provided by the embodiment of the application is characterized in that four groups of adjusting rods are hingedly connected with the cone bottom ball, and driving members are arranged corresponding to the adjusting rods, so that the overall height of the cone can be adjusted by simultaneously driving the four groups of adjusting rods to move up and down, and the angle of the cone can be finely adjusted by individually adjusting the height of a single adjusting rod, and since the lower ends of the adjusting rods are hingedly connected with the cone ball, the adjusting rods can rotate relative to the cone to adapt to the change of the angle of the cone, so that the connecting part of the adjusting rod and the cone bottom is not damaged, and local deformation of the cone is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0018] Figure 1 The structural schematic diagram provided by the embodiment of the present application is provided. Figure 2 The front view provided by the embodiment of the present application is provided. Figure 3 The connection state schematic diagram of each adjusting rod and the cone provided by the embodiment of the present application is provided. Figure 4 The connection state sectional view of the guide pipe and the frame body provided by the embodiment of the present application is provided. Figure 5 The enlarged schematic diagram of the adjusting rod provided by the embodiment of the present application is provided. Figure 6 The cooperation relationship schematic diagram of the fixed rod and the stop block provided by the embodiment of the present application is provided. Figure 7 The local sectional view of the frame body provided by the embodiment of the present application is provided.

[0019] Explanation of reference signs: 1, frame body; 11, motor; 111, first bevel gear; 12, limiting hole; 13, counterbore; 14, slot; 2, mirror panel; 3, cone; 31, ball seat; 4, adjusting rod; 41, guide block; 42, ball head; 5, guide pipe; 51, first pipe; 511, guide groove; 512, spring; 52, second pipe; 6, sleeve; 61, second end surface tooth; 7, stop block; 71, inclined hole; 8, adjusting disc; 81, fixed rod; 811, first rod; 812, second rod; 82, first end surface tooth; 83, fixed sleeve; 831, second bevel gear. DETAILED DESCRIPTION

[0020] In order for those skilled in the art to better understand the technical solutions of the present application, further detailed description of the present application will be made in combination with the accompanying drawings.

[0021] In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more than two; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation and be operated, therefore, it cannot be understood as a limitation on the present application. In the description of the present application, it is necessary to point out that, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0022] As shown in Figures 1 to 7 , the mirror single-cone calibration antenna for pulse electric field measurement provided by the embodiment of the present application comprises a frame body 1, a mirror panel 2 and a cone 3 are installed on the frame body 1, the cone 3 is suspended in an inverted posture in the frame body 1 at a position above the mirror panel 2, a plurality of adjusting rods 4 are installed on the bottom surface of the cone 3, each adjusting rod 4 is connected with the bottom surface of the cone 3 through a spherical hinge, and the adjusting rod 4 is driven to move up and down to realize the adjustment of the height and angle of the cone 3.

[0023] Specifically, as shown in Figure 1 and Figure 2 , the main structure of the mirror single-cone calibration antenna is the frame body 1, the mirror panel 2 and the cone 3 are installed in the frame body 1, wherein the mirror panel 2 is installed at the lower part of the inner side of the frame body 1, and the cone 3 is in an inverted posture and is suspended at the upper part of the inner side of the frame body 1, so that the cone 3 can be above the mirror panel 2; the cone 3 comprises a cone tip and a cone bottom, the cone tip is arranged towards the mirror panel 2, and a plurality of adjusting rods 4 are installed on the cone bottom, as shown in Figure 2 and Figure 3 , the adjusting rods 4 are provided in four groups, the lower ends of the four groups of adjusting rods 4 are connected with the bottom surface of the cone 3 through spherical hinges, and the four groups of adjusting rods 4 are arranged in a circular array with the central axis of the cone 3 as the center; in addition, a driving member is further arranged on the frame body 1, the driving member is used to drive each adjusting rod 4 to move along its own axial direction, so as to realize the adjustment of the angle of the cone 3; the driving member can adopt the existing linear driving mechanism, the linear driving mechanism is arranged one-to-one corresponding to the adjusting rod 4, and the linear driving mechanism is used to drive a rod to move along its own axial direction, which is a prior art and is directly applied without further description.

[0024] When the height of the cone 3 needs to be adjusted, each driving member drives its corresponding adjusting rod 4 to move upward or downward synchronously, so that the cone 3 can be smoothly moved upward or downward while keeping the original posture, thereby realizing the adjustment of the height of the cone 3; When the angle of the cone 3 needs to be adjusted, a group of driving members drives its corresponding adjusting rod 4 to move vertically upward or downward, when the adjusting rod 4 moves upward, the corresponding side of the cone 3 moves upward synchronously with the adjusting rod 4 to realize the angle adjustment, and at this time, the remaining adjusting rods 4 that are not moved rotate relative to the bottom surface of the cone 3 to adapt to the change of the angle of the cone 3; in the actual adjustment process, a laser range finder needs to be used to monitor the displacement of the cone tip relative to the mirror surface, so as to realize the accurate adjustment of the height and angle of the cone 3.

[0025] The mirror single-cone calibration antenna further comprises a bipolar pulse source, an SMA type tee, an oscilloscope and an attenuator (not shown in the figure), the system composed of the cone 3 and the mirror panel 2, the bipolar pulse source and the oscilloscope are all connected with the SMA type tee, and the attenuator is connected in series in the connection circuit between the oscilloscope and the SMA type tee, which is a prior art and can be directly applied without further description.

[0026] The mirror single-cone calibration antenna provided by the embodiment of the application can adjust the height of the cone 3 by driving the four groups of adjusting rods 4 upward and downward at the same time, and can also adjust the height of a single adjusting rod 4 to realize the fine adjustment of the angle of the cone 3, and since the lower end of each adjusting rod 4 is hingedly connected with the cone 3, each adjusting rod 4 can rotate relative to the cone 3 to adapt to the change of the angle of the cone 3, so that the connection between the adjusting rod 4 and the bottom of the cone 3 is not damaged, and the local deformation of the cone 3 is also avoided.

[0027] Further, a guide pipe 5 is installed on the frame body 1, the guide pipe 5 is sleeved on the outside of the adjusting rod 4, and the guide pipe 5 limits the adjusting rod 4 to move along the axial direction of the guide pipe 5, a sleeve pipe 6 is rotationally connected to the guide pipe 5, the adjusting rod 4 is threadedly connected with the sleeve pipe 6, and when the sleeve pipe 6 is driven to rotate, the adjusting rod 4 is driven to move along the axial direction of the guide pipe 5.

[0028] Specifically, the guide pipe 5 is vertically installed on the frame body 1, and a through hole matched with the adjusting rod 4 is formed in the guide pipe 5 along the axial direction of the guide pipe 5, so that the guide pipe 5 can be sleeved on the outer wall of the adjusting rod 4. Figure 3 and Figure 4As shown, the guide pipe 5 is used to limit the adjusting rod 4 to only be able to move along the axial direction of the guide pipe 5 and cannot rotate, so as to prevent the ball hinge position from being worn due to the rotation of the adjusting rod 4; optionally, the inner wall of the guide pipe 5 is provided with a guide groove 511 along the axial direction of the guide pipe 5, and the outer wall of the adjusting rod 4 is fixedly connected with a guide block 41, and the guide block 41 extends into the guide groove 511, Figure 5 In this embodiment, the outer wall of the middle part of the adjusting rod 4 is symmetrically provided with two groups of guide blocks 41, the guide blocks 41 extend outward along the radial direction of the adjusting rod 4 and are in sliding fit with the guide groove 511; the upper end of the guide pipe 5 is rotatably provided with a sleeve 6, the sleeve 6 is driven to rotate around the central axis thereof, and the adjusting rod 4 is threadedly connected with the sleeve 6, and preferably, the guide pipe 5, the sleeve 6 and the adjusting rod 4 are coaxially arranged to avoid interference; in addition, the frame body 1 is provided with a motor 11 at a position corresponding to the sleeve 6, the motor 11 is in transmission connection with the sleeve 6, and optionally, the output end of the motor 11 is fixedly connected with a first bevel gear 111, the sleeve 6 is sleeved with a second bevel gear 831, and the first bevel gear 111 and the second bevel gear 831 are in meshing with each other, so that the motor 11 can drive the sleeve 6 to rotate, and the motor 11 is a low-speed motor 11, so as to realize the fine adjustment of the position of the adjusting rod 4.

[0029] In this embodiment, through the guiding and limiting of the guide pipe 5 to the adjusting rod 4, and in cooperation with the threaded connection between the sleeve 6 and the adjusting rod 4, when the sleeve 6 is driven to rotate, the adjusting rod 4 can be driven to move along the axial direction of the sleeve 6, and the adjusting rod 4 does not rotate, so that the angle adjustment of the cone 3 is realized, and the wear of the ball hinge position of the adjusting rod 4 and the cone 3 due to the rotation of the adjusting rod 4 is avoided.

[0030] Further, the guide groove 511 penetrates to the lower end of the guide pipe 5.

[0031] Specifically, in order to facilitate the installation and disassembly of the adjusting rod 4, in this embodiment, the guide groove 511 penetrates to the lower end of the guide pipe 5, so that when the sleeve 6 is continuously driven to rotate (forward rotation) and the adjusting rod 4 moves downward and is no longer threadedly connected therewith, the adjusting rod 4 can be pulled out from the lower end of the guide pipe 5; on the contrary, during the installation of the adjusting rod 4, the guide block 41 is aligned with the guide groove 511 one by one, and the adjusting rod 4 is inserted into the guide pipe 5 from the lower end of the guide pipe 5, when the upper end of the adjusting rod 4 contacts the sleeve 6, the sleeve 6 is driven to rotate (reverse rotation), so that the sleeve 6 and the adjusting rod 4 are threadedly connected again, so that the rotation of the sleeve 6 can drive the adjusting rod 4 to move upward or downward.

[0032] Further, the guide pipe 5 is provided with a stop block 7 at a position corresponding to the guide groove 511, and the stop block 7 is driven to extend into the guide groove 511.

[0033] Specifically, in the above embodiment, to facilitate the installation and removal of the adjusting rod 4, the guide groove 511 extends directly to the lower end of the guide tube 5. The height of the adjusting rod 4 is limited only by the sleeve 6. When adjusting the height of the cone 3, if the motors 11 are not stopped in time, the sleeve 6 will rotate excessively, causing the adjusting rod 4 to lose its threaded connection. At this point, the adjusting rod 4 will slide downwards along the axial direction of the guide tube 5 until it detaches from the guide tube 5. In severe cases, the cone 3 may fall directly onto the mirror panel 2, causing serious damage. In this embodiment, the guide tube 5 has a corresponding guide... A stop 7 is provided at the position of the groove 511. The stop 7 slides radially along the guide tube 5 and can extend into the guide groove 511. After the initial hoisting of the cone 3 is completed (before the height and angle of the cone 3 are adjusted), the stop 7 is first extended into the guide groove 511. Obviously, in order to avoid the adjusting rod 4 from separating from the sleeve 6 during the normal adjustment of the adjusting rod 4, the distance between the stop 7 and the upper end of the guide groove 511 is less than the length of the threaded section on the adjusting rod 4, so as to ensure that when the guide block 41 contacts the stop 7, the upper end of the adjusting rod 4 is still threadedly connected to the sleeve 6.

[0034] In another embodiment of the present invention, the upper end of the guide tube 5 is provided with an annular protrusion along its circumference, and the frame 1 is provided with a limiting hole 12 with a diameter equal to the outer diameter of the lower part of the guide tube 5.

[0035] Specifically, such as Figure 2 and Figure 4 As shown, the guide tube 5 is inserted into the top of the frame 1 from top to bottom. To prevent the guide tube 5 from detaching from the frame 1, an annular protrusion is provided on the upper end of the guide tube 5 along its circumference. This makes the guide tube 5 include a first tube 51 and a second tube 52 connected to each other. The outer diameter of the first tube 51 is smaller than the outer diameter of the second tube 52. A limiting hole 12 is vertically opened on the frame 1. The diameter of the limiting hole 12 is equal to the outer diameter of the first tube 51. Since the outer diameter of the second tube 52 is larger than the diameter of the limiting hole 12, the guide tube 5 is directly inserted into the limiting hole 12 from top to bottom to complete the installation of the guide tube 5. Preferably, a countersunk hole 13 adapted to the outer diameter of the second tube 52 is opened on the frame 1. When the guide tube 5 is installed on the frame 1, the end of the second tube 52 connected to the first tube 51 is in the countersunk hole 13. In addition, in this embodiment, the sleeve 6 is rotatably installed on the end of the second tube 52 away from the first tube 51, and the guide groove 511 is opened in the first tube 51.

[0036] This configuration facilitates quick connection of the guide tube 5 to the frame 1, while ensuring that the weight of the cone 3 is entirely borne by the guide tube 5 itself.

[0037] In another embodiment of the present application, the upper portion of the guide pipe 5 near the annular protrusion is sleeved with an adjusting disc 8, the position of the guide pipe 5 between the annular protrusion and the adjusting disc 8 is sleeved with a spring 512, the adjusting disc 8 is drivingly connected with the stop block 7 through a connecting member, and when the adjusting disc 8 is driven to move close to the annular protrusion, the stop block 7 is driven to move radially inward along the guide pipe 5.

[0038] Further, the connecting member comprises a fixing rod 81 fixed to the adjusting disc 8, the lower portion of the fixing rod 81 is obliquely arranged, and the lower portion of the fixing rod 81 penetrates the stop block 7, and the stop block 7 is provided with an oblique hole 71 adapted to the lower end of the fixing rod 81.

[0039] Specifically, as shown in Figure 4 the upper end of the first pipe 51 is sleeved with the adjusting disc 8, the adjusting disc 8 is slidingly installed outside the first pipe 51, the cooperation relationship between the adjusting disc 8 and the first pipe 51 is the same as that between the adjusting rod 4 and the first pipe 51, so that the adjusting disc 8 can only slide along the axial direction of the first pipe 51, the outer diameter of the adjusting disc 8 is larger than the outer diameter of the second pipe 52, the position of the first pipe 51 between the adjusting disc 8 and the second pipe 52 is sleeved with the spring 512, the spring 512 is used to maintain the relative position between the adjusting disc 8 and the second pipe 52, the lower surface of the adjusting disc 8 is fixedly connected with the fixing rod 81, the fixing rod 81 comprises a first rod 811 arranged vertically and a second rod 812 arranged obliquely, the lower end of the second rod 812 is obliquely arranged towards the outer wall of the first pipe 51, that is, the included angle between the second rod 812 and the first pipe 51 is an acute angle, the second rod 812 obliquely penetrates the stop block 7, the stop block 7 is provided with an oblique hole 71 adapted to the second rod 812, and the stop block 7 is slidingly installed on the first pipe 51 and slides along the radial direction of the first pipe 51, as shown in Figure 7As shown, the frame body 1 is provided with a notch 14 corresponding to the position of the fixing rod 81, and the notch 14 is communicated with the limiting hole 12, so that the fixing rod 81 can pass through the corresponding position of the frame body 1 together with the guide pipe 5. In this way, when the guide pipe 5 is inserted into the frame body 1, the spring 512 is only subjected to the gravity of the guide pipe 5, at this time, the distance between the adjusting disc 8 and the second pipe 52 is the largest, and in this state, the upper part of the second rod 812 is located in the inclined hole 71 of the stop block 7, and when the cone 3 is connected with the guide pipe 5 through the adjusting rod 4, the pulling force of the cone 3 on the guide pipe 5 causes the second pipe 52 to be pressed and shrunk, at this time, the distance between the adjusting disc 8 and the second pipe 52 gradually becomes the smallest, in this process, the adjusting disc 8 moves upward relative to the first pipe 51, at the same time, the adjusting disc 8 pulls the second rod 812 to move upward through the first rod 811, at this time, the second rod 812 moves upward relative to the stop block 7 and pushes the stop block 7 to extend into the guide groove 511 along the radial direction of the first pipe 51. In this embodiment, the adjusting disc 8 is driven to move relative to the first pipe 51 by the force of the cone 3 on the guide pipe 5, so as to passively adjust the stop block 7, thereby ensuring that the stop block 7 can automatically block the guide groove 511 after the installation of the cone 3 is completed, so as to prevent the adjusting rod 4 from being separated from the guide pipe 5.

[0040] Further, the motor 11 is in transmission connection with the adjusting disc 8 through a gear set, the adjusting disc 8 is fixedly connected with a first end face tooth 82, the sleeve pipe 6 is sleeved with a second end face tooth 61, and the first end face tooth 82 and the second end face tooth 61 are in meshing with each other when the distance between the adjusting disc 8 and the annular protrusion is the smallest.

[0041] Specifically, in the above embodiment, although the stop block 7 can prevent the adjusting rod 4 from being separated from the sleeve pipe 6 by blocking the guide block 41, the motor 11 is still in operation, which causes great damage to the threads between the motor 11, the adjusting rod 4 and the sleeve pipe 6, and the stop block 7. Figure 2 As shown, in this embodiment, the adjusting disc 8 is rotatably connected with a fixing sleeve 83, the fixing sleeve 83 extends upward and protrudes from the upper surface of the frame body 1, the upper surface of the fixing sleeve 83 is fixedly connected with the first end face tooth 82, and the outer wall of the sleeve pipe 6 is sleeved with the second end face tooth 61, and the difference from the above embodiment is that the motor 11 is in transmission connection with the adjusting disc 8 through a gear set, and in this embodiment, a second bevel gear 831 is sleeved on the outside of the fixing sleeve 83.

[0042] The adjusting disc 8 has a first position, a second position and a third position relative to the second pipe 52: When the adjusting disc 8 is in the first position, the cone 3 is not hung on the guide pipe 5, at this time, the distance between the adjusting disc 8 and the second pipe 52 is the largest, the stop block 7 does not extend into the guide groove 511 in the first pipe 51, and the distance between the first end face tooth 82 and the second end face tooth 61 is the largest; When the first end face tooth 82 and the second end face tooth 61 are in contact but not engaged in the second position, that is, the tooth top of the first end face tooth 82 and the tooth top of the second end face tooth 61 are in contact, the first end face tooth 82 cannot drive the second end face tooth 61 to rotate synchronously, and the block 7 partially extends into the guide groove 511 in the first pipe 51, that is, the block 7 has already blocked the guide groove 511, so the adjusting rod 4 cannot be separated from the sleeve 6; When the first end face tooth 82 and the second end face tooth 61 are engaged in the third position, the first block 7 completely extends into the guide groove 511 in the first pipe 51, and the adjusting rod 4 cannot be separated from the sleeve 6.

[0043] In this way, even if the motor 11 fails to stop in time, causing the sleeve 6 to rotate too much, so that the adjusting rod 4 moves downward to the position where the guide block 41 contacts the block 7, the adjusting rod 4 is blocked and cannot continue to move downward, at this time, the sleeve 6 is locked by the adjusting rod 4, and the second end face tooth 61 cannot rotate, at this time, since the guide pipe 5 only passes through the limiting hole 12 on the frame 1 and is hung on the frame 1, the relative position of the adjusting disc 8 and the guide pipe 5 (the second pipe 52) can be adjusted, that is, the distance between the first end face tooth 82 and the second end face tooth 61 can be adjusted, when the second end face tooth 61 cannot rotate, the first end face tooth 82 slides against the tooth surface of the second end face tooth 61 when rotating, forcibly pushes away the second end face tooth 61 to ensure its rotation, that is, the first end face tooth 82 pushes the second end face tooth 61 upward, forcibly adjusts the adjusting disc 8 from the third position to the second position, at this stage, the second end face tooth 61 drives the guide pipe 5 as a whole to move upward through the sleeve 6, the moving distance is equal to the height difference between the second position and the third position, so that the motor 11 can continue to drive the first end face tooth 82 to rotate, thus preventing the threads between the motor 11, the adjusting rod 4 and the sleeve 6 and the block 7 from being damaged; since the block 7 has blocked the guide groove 511 when the adjusting disc 8 is in the second position, the adjusting rod 4 cannot move downward along the axial direction of the guide pipe 5 at this time.

[0044] Preferably, the width of the slot 14 is equal to the width of the fixed rod 81, so that the fixed rod 81 can be used to adjust the position of the block 7, and also prevent the adjusting disc 8 from rotating outside the first pipe 51, thereby ensuring that the fixed sleeve 83 can be driven to rotate relative to the adjusting disc 8, and the adjusting disc 8 can only move along the axial direction of the first pipe 51, so that the first pipe 51 is also limited from rotating.

[0045] In another embodiment of the present application, the lower end of each adjusting rod 4 is threadedly connected with a ball head 42, the bottom surface of the cone 3 is fixedly connected with a ball seat 31 matched with the ball head 42, and the ball seat 31 is provided with a spherical hole matched with the ball head 42, and the ball head 42 is in the spherical hole.

[0046] Specifically, by screwing the ball head 42 with the adjusting rod 4, the adjusting rod 4 can be detached from the cone 3 during the transportation of the cone 3, so as to facilitate the setting of the protection structure such as the sponge pad for the overall protection of the cone 3, and on the other hand, the adjusting rod 4 can be detached and stored alone to avoid damage to the adjusting rod 4 during the transportation of the cone 3.

[0047] The foregoing merely illustrates some exemplary embodiments of the present application, no doubt numerous modifications can be made by those skilled in the art without departing from the spirit and scope of the present application. Therefore, the above drawings and descriptions should not be understood as limiting the scope of the present application.

Claims

1. A mirror monopole calibration antenna for pulsed electric field metrology, comprising a frame body, a mirror panel and a cone body mounted on the frame body, the cone body being suspended upside down in the frame body above the mirror panel, characterized in that, The bottom surface of the cone is provided with a plurality of adjusting rods, each of which is connected with the bottom surface of the cone through a spherical hinge, and the adjusting rods are driven to move up and down to adjust the height and angle of the cone.

2. The mirror facet single-cone calibration antenna for pulsed electric field metrology according to claim 1, characterized in that, The frame body is provided with a guide pipe which is sleeved on the outside of the adjusting rod and limits the axial movement of the adjusting rod, and the guide pipe is rotatably connected with a sleeve, and the adjusting rod is threadedly connected with the sleeve, and when the sleeve is driven to rotate, the adjusting rod is driven to move along the axial direction of the guide pipe.

3. The mirror facet monopole calibration antenna for pulsed electric field metrology according to claim 2, characterized in that, The inner wall of the guide pipe is provided with a guide groove in the axial direction, and the outer wall of the adjusting rod is fixedly connected with a guide block which extends into the guide groove.

4. The mirror facet single-cone calibration antenna for pulsed electric field metrology according to claim 2, characterized in that, The frame body is provided with a motor corresponding to the position of the sleeve, and the motor is drivingly connected with the sleeve.

5. The mirror facet monopole calibration antenna for pulsed electric field metrology according to claim 3, wherein, The guide groove extends to the lower end of the guide pipe.

6. A mirror facet single-cone calibration antenna for pulsed electric field metrology according to claim 5, characterized in that, The guide pipe is provided with a stopper corresponding to the position of the guide groove, and the stopper is driven to extend into the guide groove.

7. A mirror facet monopole calibration antenna for pulsed electric field metrology according to claim 6, characterized in that, The upper end of the guide pipe is provided with an annular protrusion in the circumferential direction, and the frame body is vertically provided with a limiting hole with a diameter equal to the outer diameter of the lower part of the guide pipe.

8. The mirror facet monopole calibration antenna for pulsed electric field metrology according to claim 7, characterized in that, The upper part of the guide pipe is sleeved with an adjusting disc near the annular protrusion, and the guide pipe is sleeved with a spring between the annular protrusion and the adjusting disc, and the adjusting disc is drivingly connected with the stopper through a connecting piece, and when the adjusting disc is driven to move towards the annular protrusion, the stopper is driven to move radially inward along the guide pipe.

9. The mirror facet monopole calibration antenna for pulsed electric field metrology according to claim 8, characterized in that, The connecting piece includes a fixed rod fixedly connected with the adjusting disc, and the lower part of the fixed rod is inclined, and the lower part of the fixed rod penetrates the stopper, and the stopper is provided with an inclined hole matched with the lower end of the fixed rod.

10. The mirror facet single-cone calibration antenna for pulsed electric field metrology according to claim 1, characterized in that, The lower end of each adjusting rod is threadedly connected with a ball head, and the bottom surface of the cone is fixedly connected with a ball seat matched with the ball head, and the ball seat is provided with a spherical hole matched with the ball head, and the ball head is located in the spherical hole.

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