A tool and method for precision debugging of microwave parameters of eccentric magnetic steel of microwave isolator

Abstract

The present invention relates to a tool and method for precisely debugging the microwave parameters of eccentric magnets of a microwave isolator. The debugging tool comprises: a starting magnet rotating device, an ending magnet rotating device, and a power transmission device. When the starting magnet rotating device synchronously drives the magnets at the eccentric position to rotate, the power reaches the ending magnet rotating device after being transmitted through the transmission rod and the bevel gear system in the power transmission device, and synchronously drives the eccentric magnets on the same side to rotate, so as to simultaneously change the relative positions of the magnets on both sides. During the rotation process, since the bevel gear system has a transmission ratio, it is used to achieve the change in the relative positions of the magnets on both sides of the product. The present invention realizes the synchronous adjustment of the direction and strength of the magnetic field, and thus can debug the optimal microwave parameters of the microwave isolator. The present invention solves the problem of precise debugging of the positions of the eccentric magnets on both sides of the microwave isolator, and can more accurately debug the microwave parameters of the microwave isolator to the optimal state.

Description

Technical Field

[0001] The invention belongs to the technical field of microwave component debugging, and relates to a tool and method for precise debugging of microwave parameters of eccentric magnetic steel of a microwave isolator. Background Art

[0002] A microwave isolator is a two-port device that uses the non-reciprocal properties of gyromagnetic ferrite under an external bias magnetic field to allow electromagnetic waves to circulate in only one direction in the device. During reverse transmission, the electromagnetic wave energy is absorbed by the load, leaving the link in an isolated state. A microwave isolator is composed of a circulator and a load. The structure is as follows: Figure 10 As shown. To achieve microwave isolation, the gyromagnetic ferrite in the circulator of the microwave isolator requires a constant external bias magnetic field to achieve its non-reciprocity. The required bias magnetic field needs to be provided through magnetic circuit design. Waveguide isolators usually require microwave parameter debugging, which usually involves fine-tuning the direction of the magnetic field or changing the magnetic field size to ensure that the magnetic field on the gyromagnetic ferrite is uniform and reaches the magnetic field saturation state. Therefore, the spatial relative position of the double-sided magnetic steel and the gyromagnetic ferrite directly affects the gyromagnetic effect and non-reciprocity of the gyromagnetic ferrite, which in turn affects the microwave parameters. Therefore, by synchronously adjusting the relative position of the double-sided eccentric magnetic steel and the gyromagnetic ferrite, the optimal bias magnetic field suitable for the gyromagnetic ferrite can be found, and then the optimal microwave parameters can be debugged. In recent years, with the development of technology, the microwave system has gradually increased the index requirements for microwave isolators (insertion loss ≤ 0.15dB, isolation ≥ 23dB), and the problem of difficult microwave parameter debugging of microwave isolators needs to be overcome urgently.

[0003] The traditional debugging method uses both hands to synchronously rotate the position of the eccentric magnet to change the direction and strength of the magnetic field. The debugging efficiency and success rate are low, and it is easy to miss the optimal relative position of the magnetic steel on both sides, resulting in repeated rework and debugging. Therefore, it is urgent to design an efficient and reliable eccentric magnet precision debugging tooling to improve the efficiency and accuracy of microwave parameter debugging of microwave isolators and achieve optimal microwave performance parameters. Summary of the Invention

[0004] The technical problem solved by the present invention is: to overcome the shortcomings of the existing technology, and to propose a microwave parameter eccentric magnetic steel precision debugging tool and method for microwave isolators, which is suitable for microwave parameter debugging of microwave isolators and can effectively solve the problems of low efficiency and high debugging difficulty of traditional debugging tooling; it can meet the parameter debugging of two types of microwave isolators with single-sided magnetic steel eccentricity and double-sided magnetic steel eccentricity; and it has strong versatility, and only by modifying the position of the connecting clamp column in the magnetic steel ring rotor shaft can it meet the debugging of the same type of microwave isolators with different magnetic steel sizes, and by changing the clamping ring of the shaft sleeve, it can meet the debugging of microwave isolators of different models.

[0005] The solution of the present invention is:

[0006] Firstly,

[0007] A microwave isolator microwave parameter eccentric magnetic steel precision debugging tool, comprising: a starting magnetic steel rotating device, an end magnetic steel rotating device and a power transmission device;

[0008] The power transmission device is used to transmit power between the starting magnetic steel rotating device and the end magnetic steel rotating device;

[0009] The starting magnetic steel rotating device and the ending magnetic steel rotating device are respectively connected to the magnetic steel rings in the left and right cavities of the microwave isolator;

[0010] The transmission ratio between the starting magnetic steel rotating device and the ending magnetic steel rotating device is greater than 10.

[0011] Preferably, the power transmission device comprises: a starting bevel gear, a starting rotating shaft, a third sliding bearing, a second transmission shaft, a small bevel gear, a large bevel gear, a fourth sliding bearing, a terminal rotating shaft, a terminal bevel gear, a base, a right connecting portion and a left connecting portion;

[0012] The right connecting part and the left connecting part are fixedly installed on the bottom of the base respectively; a mounting groove is processed on the left and right sides of the top of the base respectively;

[0013] The third sliding bearing is mounted on the second transmission shaft. The second transmission shaft passes through the through hole on the top of the base. Both ends of the second transmission shaft are coaxially fixed to the small bevel gear and have an interference fit. The limiting rings of the second transmission shaft are clamped on both sides of the through hole to limit the movement of the second transmission shaft along the axial direction.

[0014] The small bevel gears at the left and right ends of the second transmission shaft are respectively meshed with the large bevel gear, the large bevel gears at the left and right ends of the second transmission shaft are respectively coaxially mounted on the inner ring of the fourth sliding bearing and have an interference fit, and the outer ring of the fourth sliding bearing is interference fit with the mounting groove on the top of the base;

[0015] The terminal rotating shaft passes through the through hole at the bottom of the right mounting slot, and the terminal rotating shaft rotates along with the large bevel gear on the right;

[0016] The starting rotating shaft passes through the through hole at the bottom of the left mounting groove, and the starting rotating shaft rotates together with the left large bevel gear;

[0017] The starting bevel gear is coaxially fixed with the lower end of the starting rotating shaft and has an interference fit, and the ending bevel gear is coaxially fixed with the lower end of the ending rotating shaft and has an interference fit;

[0018] The starting bevel gear is meshed with the starting magnetic steel rotating device through gears;

[0019] The end bevel gear is meshed with the end magnetic steel rotating device through gears.

[0020] Preferably, the starting magnetic steel rotating device comprises: a shaft sleeve, a first sliding bearing, a magnetic steel ring rotor shaft and a first bevel gear;

[0021] The first bevel gear is interference-fitted with the magnetic steel ring rotor shaft, and the starting bevel gear of the power transmission device and the first bevel gear are meshed through gears;

[0022] The magnetic steel ring rotor shaft and the inner ring of the first sliding bearing are interference fit, and the outer ring of the first sliding bearing and the shaft sleeve are interference fit;

[0023] The shaft sleeve is sleeved inside the right connecting part, and the shaft sleeve and the right connecting part of the base are coaxially fixed and interference fit;

[0024] A first connecting clamp is processed on the side of the magnetic steel ring rotor shaft facing the end magnetic steel rotating device; the first connecting clamp of the magnetic steel ring rotor shaft is interference fit with the first rotating hole of the first magnetic steel ring on the product, and the magnetic steel ring rotor shaft rotates synchronously with the first magnetic steel ring.

[0025] Preferably, the terminal magnetic steel rotating device comprises: a second bevel gear, a first transmission shaft, a second sliding bearing and a magnetic steel rotor shaft;

[0026] The second bevel gear is coaxially fixed to one end of the first transmission shaft and has an interference fit, and the terminal bevel gear of the power transmission device is meshed with the second bevel gear through gears; the other end of the first transmission shaft is coaxially fixed to the inner ring of the second sliding bearing and has an interference fit;

[0027] The second sliding bearing is sleeved inside the left connecting part, and the outer ring of the second sliding bearing is coaxially fixed with the left connecting part and has an interference fit;

[0028] The second bevel gear receives power transmitted by the power transmission device;

[0029] The magnetic steel rotor shaft is coaxially fixed to the other end of the first transmission shaft and has an interference fit, so that the magnetic steel rotor shaft and the second bevel gear rotate synchronously; the magnetic steel rotor shaft and the second sliding bearing are respectively located on both sides of the right connecting portion of the base;

[0030] A second connecting clamp is processed on the side of the magnetic steel rotor shaft facing the starting magnetic steel rotating device; the second connecting clamp of the magnetic steel rotor shaft is interference fit with the second rotating hole of the second magnetic steel ring on the product. The rotation of the magnetic steel rotor shaft drives the second magnetic steel ring to rotate synchronously, and the second magnetic steel ring drives the second magnet to rotate synchronously.

[0031] Preferably, the number of teeth of the small bevel gear is smaller than the number of teeth of the large bevel gear.

[0032] Preferably, the number of teeth of the first bevel gear is greater than the number of teeth of the starting bevel gear.

[0033] Preferably, the number of teeth of the second bevel gear is smaller than the number of teeth of the terminal bevel gear.

[0034] Secondly,

[0035] A method for precisely debugging the microwave parameters of an eccentric magnetic steel of a microwave isolator using the tool for precisely debugging the microwave parameters of an eccentric magnetic steel of a microwave isolator described in the first aspect includes:

[0036] 1) Maintaining the position of the first magnet in the coaxial through hole A of the first magnet ring, the second magnet in the coaxial through hole B is placed in the eccentric through hole B of the second magnet ring. Rotating the starting magnet rotating device drives the ending magnet rotating device to rotate, thereby driving the second magnet in the eccentric through hole B to start rotating. At this time, the first magnet in the coaxial through hole A performs a circular motion centered on the axis of the coaxial through hole A, and the second magnet in the eccentric through hole B performs a circular motion centered on the axis of the coaxial through hole B. During this period, observe whether the various microwave parameters of the microwave isolator 4 meet the design values. If so, the debugging is qualified; if not, proceed to step 2).

[0037] 2) Place the first magnet in the coaxial through hole A of the first magnetic steel ring into the eccentric through hole A, and the second magnet in the coaxial through hole B is still placed in the eccentric through hole B of the second magnetic steel ring. Rotate the starting magnetic steel rotating device to drive the ending magnetic steel rotating device to rotate. At this time, the magnet in the eccentric through hole A performs a circular motion centered on the axis of the coaxial through hole A, and the second magnet in the eccentric through hole B performs a circular motion centered on the axis of the coaxial through hole B. During this period, observe whether the various microwave parameters of the microwave isolator meet the design values. If so, the debugging is qualified; if not, proceed to step 3).

[0038] 3) Place the first and second magnets back into the coaxial through-holes A and B on the same side. Keep the number of magnets in coaxial through-hole A unchanged, increase the number of second magnets in coaxial through-hole B by one, and repeat the operation in step 1). If the conditions are met, the debugging is qualified. If not, proceed to step 4).

[0039] 4) Repeat step 2). If the conditions are met, the debugging is qualified. If not, proceed to step 5).

[0040] 5) Place the first magnet in the first magnetic ring back into the coaxial through hole A, and increase the number of first magnets by one. Keep the number of first magnets and second magnets on both sides consistent. Then place the second magnet in the eccentric through hole B back into the coaxial through hole B. Observe whether the various microwave parameters of the microwave isolator meet the design values. If so, the debugging is qualified. If not, proceed to step 6).

[0041] 6) Repeat steps 1) to 5) until the microwave parameters of the microwave isolator meet the design values ​​and the number of magnetic steels on a single side can reach up to 6.

[0042] The beneficial effects of the present invention compared with the prior art are:

[0043] This invention is also applicable to situations where the magnets on either side of the product being adjusted are concentric on one side and eccentric on the other, or both sides are eccentric simultaneously. By converting the rotation ratio of a bevel gear train, the invention enables differential rotation of the magnets on either side of the microwave isolator, subtly changing the direction and strength of the magnetic field to optimize microwave parameters. This achieves precise microwave parameter adjustment, reduces debugging difficulty, and improves debugging efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 This is the assembly drawing of the tooling for precise debugging of microwave parameter eccentricity of microwave isolator;

[0045] Figure 2 This is the exploded view of the tooling for precise debugging of microwave parameter eccentricity of microwave isolator;

[0046] Figure 3 This is the exploded view of the starting magnetic steel rotating device;

[0047] Figure 4 This is the assembly diagram of the end magnetic steel rotating device;

[0048] Figure 5 It is the assembly drawing of the power transmission device;

[0049] Figure 6 This is an exploded view of the power transmission device;

[0050] Figure 7 Provide precision debugging tooling and product assembly drawings for microwave parameter eccentricity of microwave isolators;

[0051] Figure 8 Schematic diagram of microwave isolator microwave parameter eccentricity precision debugging tooling and product assembly;

[0052] Figure 9 Schematic diagram of microwave isolator microwave parameter eccentricity precision debugging tooling and product assembly;

[0053] Figure 10 This is an exploded view of the microwave isolator product;

[0054] Figure 11(a) is a diagram showing the position of the magnetic ring and magnetic steel in the main view of the microwave isolator product;

[0055] FIG11( b ) is a diagram showing the position of the magnetic steel ring and the magnetic steel in the rear view of the microwave isolator product;

[0056] Figure 12 Schematic diagram of the magnetic steel ring structure.

[0057] In the figure,

[0058] The starting magnetic steel rotating device 1, the ending magnetic steel rotating device 2, the power transmission device 3, and the microwave isolator 4;

[0059] Bushing 11, first sliding bearing 12, magnetic steel ring rotor shaft 13, first bevel gear 14, first connecting clamp 131

[0060] Second bevel gear 21, first transmission shaft 22, second sliding bearing 23, magnetic steel rotor shaft 24, second connecting clamp 241

[0061] Starting bevel gear 31, starting rotating shaft 32, third sliding bearing 33, second transmission shaft 34, small bevel gear 35, large bevel gear 36, fourth sliding bearing 37, ending rotating shaft 38, ending bevel gear 39, base 30, right connecting portion 311, left connecting portion 312, mounting groove 301, through hole 302;

[0062] Circulator 41, load 42, circulator cavity 411, left cavity 4111, right cavity 4112;

[0063] First magnetic steel ring 412, second magnetic steel ring 413, first magnetic steel 414, second magnetic steel 415, left-handed ferrite 416, right-handed ferrite 417;

[0064] First rotating hole 4121, coaxial through hole A4122, eccentric through hole A4123;

[0065] Second rotating hole 4131, coaxial through hole B4132, eccentric through hole B4133;

[0066] Cylindrical groove A41111, cylindrical groove B41121. DETAILED DESCRIPTION

[0067] The present invention will be further described below with reference to the accompanying drawings. Figure 1-12 As shown, the present invention provides a tool and method for precision tuning of microwave parameters of eccentric magnetic steel for a microwave isolator, comprising: a starting magnetic steel rotating device 1, a terminal magnetic steel rotating device 2, and a power transmission device 3. A microwave isolator 4 is disposed between the starting magnetic steel rotating device 1 and the terminal magnetic steel rotating device 2. The power transmission device 3 is used to transmit power between the starting magnetic steel rotating device 1 and the terminal magnetic steel rotating device 2.

[0068] like Figure 7 As shown, the microwave isolator 4 includes a circulator 41 and a load 42 . The circulator 41 and the load 42 are fastened together to form a microwave path, thereby achieving an isolation function.

[0069] like Figure 10 As shown, the circulator 41 includes: a circulator cavity 411, a first magnetic steel ring 412, a second magnetic steel ring 413, a first magnetic steel 414 and a second magnetic steel 415; the first magnetic steel ring 412 and the second magnetic steel ring 413 are located on the left and right sides, and the first magnetic steel 414 and the second magnetic steel 415 are located on the left and right sides.

[0070] The circulator cavity 411 includes a left cavity 4111, a right cavity 4112, a left-handed ferrite 416 and a right-handed ferrite 417;

[0071] The left-handed ferrite 416 and the right-handed ferrite 417 are glued to the left cavity 4111 and the right cavity 4112 respectively, and the left cavity 4111 and the right cavity 4112 are connected to form the microwave path of the circulator 41. The left-handed ferrite 416 and the right-handed ferrite 417 do not contact each other.

[0072] The left cavity 4111 and the right cavity 4112 are fixedly connected;

[0073] The cylindrical groove A41111 is shown in FIG11( a ). The left cavity 4111 is provided with a cylindrical groove A41111 on the back side away from the left-handed ferrite 416 , and the first magnetic steel ring 412 is placed in the cylindrical groove A41111 of the left cavity 4111 .

[0074] The cylindrical groove B41121 is shown in Figure 11(b). The right cavity 4112 is provided with a cylindrical groove B41121 on the back side away from the right-handed ferrite 417, and the second magnetic steel ring 413 is placed in the cylindrical groove B41121 of the right cavity 4112.

[0075] The first magnetic steel ring 412 and the second magnetic steel ring 413 each have two partially overlapping holes, and the axes of the two holes are staggered and parallel to each other.

[0076] The first magnetic steel ring 412 on the left has a coaxial through hole A4122 and an eccentric through hole A4123. The coaxial through hole A4122 is coaxial with the left-handed ferrite 416 on the same side, and the eccentric through hole A4123 is parallel to the axis of the left-handed ferrite 416 on the same side but not coaxial.

[0077] The second magnetic steel ring 413 on the right has a coaxial through hole B4132 and an eccentric through hole B4133. The coaxial through hole B4132 is coaxial with the right-handed ferrite 417 on the same side, and the eccentric through hole B4133 is parallel to the axis of the right-handed ferrite 417 on the same side but not coaxial.

[0078] The coaxial through hole A4122 of the first magnetic steel ring 412 partially overlaps with the eccentric through hole A4123 in cross section.

[0079] The coaxial through hole B4132 and the eccentric through hole B4133 of the second magnetic steel ring 413 partially overlap in cross section.

[0080] The first magnetic steel 414 is placed in the coaxial through hole A4122 or the eccentric through hole A4123, and the second magnetic steel 415 is placed in the coaxial through hole B4132 or the eccentric through hole B4133.

[0081] The starting magnetic steel rotating device 1 is fixed on the left connecting portion 312 of the base 30 , and the ending magnetic steel rotating device 2 is fixed on the right connecting portion 311 of the base 30 .

[0082] like Figure 3 As shown, the starting magnetic steel rotating device 1 includes: a sleeve 11, a first sliding bearing 12, a magnetic steel ring rotor shaft 13 and a first bevel gear 14;

[0083] The starting bevel gear 31 of the power transmission device 3 and the first bevel gear 14 with 48 teeth are engaged through gears;

[0084] The magnetic steel ring rotor shaft 13 is interference fit with the inner ring of the first sliding bearing 12, and the outer ring of the first sliding bearing 12 is interference fit with the shaft sleeve 11;

[0085] A right connecting portion 311 is processed on the base 30 , and the shaft sleeve 11 is sleeved inside the right connecting portion 311 . The shaft sleeve 11 and the right connecting portion 311 of the base 30 are coaxially fixed and interference fit.

[0086] The first bevel gear 14 is interference-fitted with the magnetic steel ring rotor shaft 13 , and the first bevel gear 14 transmits power to the starting bevel gear 31 of the power transmission device 3 through gear meshing.

[0087] The first connecting clamp 131 is processed on the side of the magnetic steel ring rotor shaft 13 facing the end magnetic steel rotating device 2; the first connecting clamp 131 of the magnetic steel ring rotor shaft 13 is interference-fitted with the first rotating hole 4121 of the first magnetic steel ring 412 on the product, and the magnetic steel ring rotor shaft 13 rotates synchronously with the first magnetic steel ring 412, and the first magnetic steel ring 412 drives the first magnetic steel 414 to rotate synchronously. Figure 9 shown.

[0088] like Figure 4 As shown, the terminal magnetic steel rotating device 2 includes: a second bevel gear 21, a first transmission shaft 22, a second sliding bearing 23 and a magnetic steel rotor shaft 24.

[0089] The 36-tooth end bevel gear 39 and the second bevel gear 21 in the power transmission device 3 are engaged through gears;

[0090] The second bevel gear 21 receives the power transmitted by the power transmission device 3. The magnetic steel rotor shaft 24 in the terminal magnetic steel rotating device 2 drives the second magnetic steel ring 413 to rotate.

[0091] The second bevel gear 21 is coaxially fixed to one end of the first transmission shaft 22 and has an interference fit, and the other end of the first transmission shaft 22 is coaxially fixed to the inner ring of the second sliding bearing 23 and has an interference fit;

[0092] A left connecting portion 312 is machined on the base 30, and the second sliding bearing 23 is sleeved inside the left connecting portion 312. The outer ring of the second sliding bearing 23 is coaxially fixed with the left connecting portion 312 and has an interference fit.

[0093] The magnetic steel rotor shaft 24 is coaxially fixed to the other end of the first transmission shaft 22 and has an interference fit, so that the magnetic steel rotor shaft 24 and the second bevel gear 21 rotate synchronously; the magnetic steel rotor shaft 24 and the second sliding bearing 23 are respectively located on both sides of the right connecting portion 311 of the base 30;

[0094] The second connecting column 241 is as follows Figure 8 As shown, a second connecting post 241 is machined on the side of the magnetic steel rotor shaft 24 facing the starting magnetic steel rotating device 1. The second connecting post 241 of the magnetic steel rotor shaft 24 has an interference fit with the second rotating hole 4131 of the second magnetic steel ring 413 on the product. The rotation of the magnetic steel rotor shaft 24 drives the second magnetic steel ring 413 to rotate synchronously, and the second magnetic steel ring 413 drives the second magnet 415 to rotate synchronously.

[0095] like Figure 5 、 6 As shown, the power transmission device 3 includes: a 12-tooth starting bevel gear 31, a starting rotating shaft 32, a third sliding bearing 33, a second transmission shaft 34, two 12-tooth small bevel gears 35, two 48-tooth large bevel gears 36, two fourth sliding bearings 37, a terminal rotating shaft 38, a 36-tooth terminal bevel gear 39, a base 30, a right connecting portion 311 and a left connecting portion 312;

[0096] The right connecting portion 311 and the left connecting portion 312 are fixedly mounted on the bottom of the base 30 respectively; a mounting groove 301 is processed on the top of the base 30;

[0097] The terminal rotating shaft 38 passes through the through hole at the bottom of the right mounting groove 301, and the terminal rotating shaft 38 rotates together with the right large bevel gear 36;

[0098] The starting rotating shaft 32 passes through the through hole at the bottom of the left mounting groove 301, and the starting rotating shaft 32 rotates together with the left large bevel gear 36;

[0099] The 12-tooth starting bevel gear 31 is coaxially fixed to the lower end of the starting rotating shaft 32 and has an interference fit, and the 36-tooth ending bevel gear 39 is coaxially fixed to the lower end of the ending rotating shaft 38 and has an interference fit;

[0100] The third sliding bearing 33 is mounted on the second transmission shaft 34. The second transmission shaft 34 passes through the through hole 302 at the top of the base 30. The two ends of the second transmission shaft 34 are coaxially fixed to the 12-tooth small bevel gear 35 with an interference fit. The limiting rings 341 of the second transmission shaft 34 are clamped on both sides of the through hole 302 to limit the movement of the second transmission shaft 34 along the axial direction.

[0101] The two left and right 12-tooth small bevel gears 35 and the two left and right 48-tooth large bevel gears 36 are respectively engaged with each other. The two left and right large bevel gears 36 are respectively coaxially mounted on the left and right two fourth sliding bearings 37 and have an interference fit. The fourth sliding bearings 37 are interference fit with the mounting groove 301 at the top of the base 30 to fix the entire bevel gear system.

[0102] The base 30 is used to fix the starting magnetic steel rotating device 1 and the ending magnetic steel rotating device 2 .

[0103] The bottom surface of the base fits against the top surface of the microwave isolator 4 of the product to be adjusted, securing the entire power transmission device. Bevel gears or sliding bearings work with the drive shaft to secure or transmit power; bevel gears of different specifications mesh with each other to change the direction of force transmission.

[0104] The starting magnetic steel rotating device 1 is engaged with the starting bevel gear 31 with 12 teeth through the first bevel gear 14 with 48 teeth, thereby transmitting the rotation of the first magnetic steel ring 412 at the starting end to the power transmission device 3; the ending magnetic steel rotating device 2 is engaged with the ending bevel gear 39 with 36 teeth and the second bevel gear 21 with 12 teeth, thereby transmitting the power of the power transmission device 3 to the second magnetic steel ring 413 at the end.

[0105] In the embodiment of the present invention, the number of teeth of the first bevel gear 14 is 48, the number of teeth of the starting bevel gear 31 is 12, the number of teeth of the small bevel gear 35 is 12, the number of teeth of the large bevel gear 36 is 48, the number of teeth of the end bevel gear 39 is 36, the number of teeth of the second bevel gear 21 is 12, and the transmission ratio of the tooling is 12:1.

[0106] The first bevel gear 14 with 48 teeth in the starting magnetic steel rotating device 1 rotates 360°, and after being transmitted through the power transmission device 3, the second bevel gear 21 with 12 teeth in the ending magnetic steel rotating device 2 rotates 30°.

[0107] Since the rotation ratio of the debugging tooling is: i=12:1, the magnetic steel ring rotor shaft 13 of the starting magnetic steel rotating device 1 rotates 360°, and the magnetic steel rotor shaft 24 of the ending magnetic steel rotating device 2 rotates 30°. At the same time, the first magnetic steel 414 and the second magnetic steel 415 driven at the starting and ending ends rotate 360° and 30° respectively.

[0108] During debugging, the P1 and P2 ends of the product are respectively connected to a calibrated vector network analyzer. By rotating the magnetic ring rotor shaft 13, the positions of the first magnetic steel 414 and the second magnetic steel 415 on both sides of the product are continuously adjusted to find the optimal microwave parameters, achieve precise debugging of the microwave parameters, reduce debugging difficulty, and improve debugging efficiency.

[0109] The above-mentioned microwave parameter eccentric magnetic steel precision debugging tool and method of the microwave isolator include the following steps:

[0110] a) Connect the microwave isolator to a calibrated vector network analyzer and place the number of magnetic steels in the left and right cavities according to the designed number of magnetic steels of the microwave isolator (taking the design value of 3 first magnetic steels 414 and 3 second magnetic steels 415 on the left and right as an example) to observe whether the various microwave parameters of the microwave isolator meet the designed values;

[0111] b) After assembling the microwave isolator according to the designed number of magnetic steels, due to the existence of part processing errors and deviations in material parameters, the magnetic field strength or magnetic field position does not meet the design requirements, which in turn leads to a large deviation between the measured microwave parameter values ​​and the designed values. In this case, it is necessary to adjust the number or position of the magnetic steels to change the magnetic field strength or magnetic field position;

[0112] c) First, maintain the position of the first magnetic steel 414 in the coaxial through-hole A4122 of the first magnetic steel ring 412. Place the second magnetic steel 415 in the coaxial through-hole B4132 in the eccentric through-hole B4133 of the second magnetic steel ring 413. Rotate the starting magnetic steel rotating device 1, which in turn drives the ending magnetic steel rotating device 2, which in turn drives the second magnetic steel 415 in the eccentric through-hole B4133 to begin rotating. At this point, the first magnetic steel 414 in the coaxial through-hole A4122 performs a circular motion centered on the axis of the coaxial through-hole A4122 (the axes of the first magnetic steel 414 and the coaxial through-hole A4122 are coaxial, so this can also be considered as the first magnetic steel 414 performing a circular motion around its own central axis). The second magnetic steel 415 in the eccentric through-hole B4133 performs a circular motion centered on the axis of the coaxial through-hole B4132. During this process, observe whether the various microwave parameters of the microwave isolator meet the design values. If so, the commissioning is qualified. If not satisfied, proceed to step d);

[0113] d) If not satisfied, place the first magnet 414 in the coaxial through hole A4122 of the first magnet ring 412 into the eccentric through hole A4123, and the second magnet 415 in the coaxial through hole B4132 is still placed in the eccentric through hole B4133 of the second magnet ring 413. Rotate the starting magnet rotating device 1 to drive the end magnet rotating device 2 to rotate, and the magnets in the through holes on both sides also start to make circular motion. At this time, the magnet in the eccentric through hole A4123 performs a circular motion centered on the axis of the coaxial through hole A4122, and the second magnet 415 in the eccentric through hole B4133 still performs a circular motion centered on the axis of the coaxial through hole B4132. When the magnet in the eccentric through hole A4123 of the first magnetic ring 412 rotates 360°, the magnet in the eccentric through hole B4133 of the second magnetic ring 413 rotates 30°. By continuously adjusting the relative positions of the two groups of magnetic steels in small increments, the microwave parameters that best meet the design values ​​are found, achieving precise debugging of the microwave parameters, reducing debugging difficulty, and improving debugging efficiency. During this period, observe whether the various microwave parameters of the microwave isolator meet the design values. If so, the debugging is qualified. If not, proceed to step e);

[0114] e) If not, place both sets of magnets (first magnet 414 and second magnet 415) back into the coaxial through-holes A4122 and B4132 on the same side. Keep the number of magnets in coaxial through-hole A4122 unchanged, add one magnet to coaxial through-hole B4132 (i.e., increase the number of second magnets 415), and repeat step c). If satisfied, the commissioning is successful. If not, proceed to step f).

[0115] f) If not, repeat step d). If satisfied, the debugging is qualified. If not satisfied, proceed to step g);

[0116] g) If not, replace the magnets in the first magnetic ring 412 into the coaxial through-hole A4122, increasing the number by one, while keeping the number of magnets on both sides the same. Then, replace the magnets in the eccentric through-hole B4133 into the coaxial through-hole B4132, and observe whether the various microwave parameters of the microwave isolator meet the design values. If so, the debugging is qualified. If not, proceed to step h);

[0117] h) If not, repeat steps c) to g) until the microwave parameters of the microwave isolator meet the design values. The maximum number of magnetic steels on a single side can reach 6.

[0118] i) After the number of magnets is determined, pour the curing agent into the magnet ring and fix the position of the magnet. At this point, the microwave isolator is qualified.

[0119] The method of continuously adjusting the positions of the first magnetic steel 414 and the second magnetic steel 415 on both sides of the product by reducing the number of magnetic steels so that the measured values ​​of the microwave parameters of the microwave isolator meet the design values ​​is the same as above.

[0120] Although the present invention has been disclosed above in terms of preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications to the technical solutions of the present invention by using the methods and technical contents disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention shall fall within the scope of protection of the technical solutions of the present invention.

Claims

1. A microwave isolator microwave parameter eccentric magnetic steel precision debugging tool, characterized in that: include: A starting magnetic steel rotating device (1), an ending magnetic steel rotating device (2) and a power transmission device (3); The transmission ratio between the starting magnetic steel rotating device (1) and the ending magnetic steel rotating device (2) is greater than 10; The power transmission device (3) comprises: a starting bevel gear (31), a starting rotating shaft (32), a third sliding bearing (33), a second transmission shaft (34), a small bevel gear (35), a large bevel gear (36), a fourth sliding bearing (37), a terminal rotating shaft (38), a terminal bevel gear (39), a base (30), a right connecting portion (311) and a left connecting portion (312); The right connecting portion (311) and the left connecting portion (312) are respectively fixedly mounted on the bottom of the base (30); a mounting groove (301) is respectively processed on the left and right sides of the top of the base (30); The third sliding bearing (33) is mounted on the second transmission shaft (34). The second transmission shaft (34) passes through the through hole (302) at the top of the base (30). Both ends of the second transmission shaft (34) are coaxially fixed with the small bevel gear (35) and have an interference fit. The limiting rings (341) of the second transmission shaft (34) are clamped on both sides of the through hole (302) to limit the movement of the second transmission shaft (34) along the axial direction. The small bevel gears (35) at the left and right ends of the second transmission shaft (34) are respectively meshed with the large bevel gear (36), the large bevel gears (36) at the left and right ends of the second transmission shaft (34) are respectively coaxially mounted on the inner ring of the fourth sliding bearing (37) and have an interference fit, and the outer ring of the fourth sliding bearing (37) is interference fit with the mounting groove (301) at the top of the base (30); The terminal rotating shaft (38) passes through the through hole at the bottom of the right mounting groove (301), and the terminal rotating shaft (38) rotates together with the right large bevel gear (36); The starting end rotating shaft (32) passes through the through hole at the bottom of the left mounting groove (301), and the starting end rotating shaft (32) rotates together with the left large bevel gear (36); The starting bevel gear (31) is coaxially fixed with the lower end of the starting rotating shaft (32) and has an interference fit, and the ending bevel gear (39) is coaxially fixed with the lower end of the ending rotating shaft (38) and has an interference fit; The starting bevel gear (31) is meshed with the starting magnetic steel rotating device (1) through gears; The end bevel gear (39) is meshed with the end magnetic steel rotating device (2) through gears; The starting magnetic steel rotating device (1) comprises: a shaft sleeve (11), a first sliding bearing (12), a magnetic steel ring rotor shaft (13) and a first bevel gear (14); The first bevel gear (14) is interference-fitted with the magnetic steel ring rotor shaft (13), and the starting bevel gear (31) of the power transmission device (3) and the first bevel gear (14) are engaged through gears; The magnetic steel ring rotor shaft (13) is interference-fitted with the inner ring of the first sliding bearing (12), and the outer ring of the first sliding bearing (12) is interference-fitted with the shaft sleeve (11); The shaft sleeve (11) is sleeved inside the right connecting portion (311), and the shaft sleeve (11) and the right connecting portion (311) of the base (30) are coaxially fixed and interference fit; A first connecting clamping column (131) is processed on the side of the magnetic steel ring rotor shaft (13) facing the end magnetic steel rotating device (2); the first connecting clamping column (131) of the magnetic steel ring rotor shaft (13) is interference-fitted with the first rotating hole (4121) of the first magnetic steel ring (412) on the product, and the magnetic steel ring rotor shaft (13) rotates synchronously with the first magnetic steel ring (412); The terminal magnetic steel rotating device (2) comprises: a second bevel gear (21), a first transmission shaft (22), a second sliding bearing (23) and a magnetic steel rotor shaft (24); The second bevel gear (21) is coaxially fixed to one end of the first transmission shaft (22) and is interference-fitted; the terminal bevel gear (39) of the power transmission device (3) is meshed with the second bevel gear (21) through gears; the other end of the first transmission shaft (22) is coaxially fixed to the inner ring of the second sliding bearing (23) and is interference-fitted; The second sliding bearing (23) is sleeved inside the left connecting part (312), and the outer ring of the second sliding bearing (23) is coaxially fixed with the left connecting part (312) and has an interference fit; The second bevel gear (21) receives power transmitted by the power transmission device (3); The magnetic steel rotor shaft (24) is coaxially fixed with the other end of the first transmission shaft (22) and is interference-fitted, so that the magnetic steel rotor shaft (24) and the second bevel gear (21) rotate synchronously; the magnetic steel rotor shaft (24) and the second sliding bearing (23) are respectively located on both sides of the right connecting portion (311) of the base (30); A second connecting clamping column (241) is processed on the side of the magnetic steel rotor shaft (24) facing the starting magnetic steel rotating device (1); the second connecting clamping column (241) of the magnetic steel rotor shaft (24) is interference-fitted with the second rotating hole (4131) of the second magnetic steel ring (413) on the product, and the rotation of the magnetic steel rotor shaft (24) drives the second magnetic steel ring (413) to rotate synchronously, and the second magnetic steel ring (413) drives the second magnetic steel (415) to rotate synchronously.

2. A microwave isolator microwave parameter eccentric magnetic steel precision debugging tool according to claim 1, characterized in that: The number of teeth of the small bevel gear (35) is smaller than the number of teeth of the large bevel gear (36).

3. The microwave parameter eccentric magnetic steel precision debugging tool for microwave isolator according to claim 1, characterized in that: The number of teeth of the first bevel gear (14) is greater than the number of teeth of the starting bevel gear (31).

4. The microwave parameter eccentric magnetic steel precision debugging tool for microwave isolators according to claim 3, characterized in that: The number of teeth of the second bevel gear (21) is smaller than the number of teeth of the terminal bevel gear (39).

5. A method for precisely debugging microwave parameters of eccentric magnetic steel of a microwave isolator using the tool for precisely debugging microwave parameters of eccentric magnetic steel of a microwave isolator according to claim 1, characterized in that: include: 1) The position of the first magnetic steel (414) is kept unchanged in the coaxial through hole A (4122) of the first magnetic steel ring (412), and the second magnetic steel (415) in the coaxial through hole B (4132) is placed in the eccentric through hole B (4133) of the second magnetic steel ring (413). The starting magnetic steel rotating device (1) is rotated to drive the end magnetic steel rotating device (2) to rotate, thereby driving the second magnetic steel (415) in the eccentric through hole B (4133) to start rotating; at this time, the first magnetic steel (414) in the coaxial through hole A (4122) performs a circular motion with the axis of the coaxial through hole A (4122) as the center, and the second magnetic steel (415) in the eccentric through hole B (4133) performs a circular motion with the axis of the coaxial through hole B (4132) as the center. During this period, it is observed whether the various microwave parameters of the microwave isolator 4 meet the design values; if they meet, the debugging is qualified; if not, proceed to step 2); 2) The first magnet (414) in the coaxial through hole A (4122) of the first magnet ring (412) is placed in the eccentric through hole A (4123), and the second magnet (415) in the coaxial through hole B (4132) is still placed in the eccentric through hole B (4133) of the second magnet ring (413). The starting magnet rotating device (1) is rotated to drive the end magnet rotating device (2) to rotate. At this time, the magnet in the eccentric through hole A (4123) performs a circular motion with the axis of the coaxial through hole A (4122) as the center, and the second magnet (415) in the eccentric through hole B (4133) still performs a circular motion with the axis of the coaxial through hole B (4132) as the center. During this period, observe whether the various microwave parameters of the microwave isolator meet the design values; if they meet, the debugging is qualified; if not, proceed to step 3); 3) Place the first magnetic steel (414) and the second magnetic steel (415) back into the coaxial through hole A (4122) and the coaxial through hole B (4132) on the same side, then keep the number of magnetic steels in the coaxial through hole A (4122) unchanged, increase the number of magnetic steels in the second magnetic steel (415) in the coaxial through hole B (4132) by one, and then repeat the operation in step 1); if satisfied, the debugging is qualified; if not satisfied, proceed to step 4); 4) Repeat step 2). If the conditions are met, the debugging is qualified. If not, proceed to step 5). 5) Put the first magnetic steel (414) in the first magnetic steel ring (412) back into the coaxial through hole A (4122), and increase the number of the first magnetic steel (414) by one, and keep the number of the first magnetic steel (414) and the second magnetic steel (415) on both sides consistent, then put the second magnetic steel (415) in the eccentric through hole B (4133) back into the coaxial through hole B (4132), and observe whether the various microwave parameters of the microwave isolator meet the design values; if so, the debugging is qualified; if not, proceed to step 6); 6) Repeat steps 1) to 5) until the microwave parameters of the microwave isolator meet the design values ​​and the number of magnetic steels on a single side can reach up to 6.

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