Double-pole double-throw radio frequency switch

Abstract

The invention discloses a double-pole double-throw radio frequency switch, which comprises a radio frequency module, an electromagnetic transmission assembly and a control module, and is characterized in that the radio frequency module comprises a base body; the base body is fixedly covered with the cover plate, and a first hole groove is formed in the side, away from the base body, of the cover plate; the side, facing the cover plate, of the base body is provided with a first groove, at least part of the reed is located in the first groove, the thickness of the reed is 0.05-0.1 mm, and the reed is provided with a reinforcing rib; the positioning seat is arranged on the side, away from the base body, of the cover plate corresponding to the reed; each positioning seat is correspondingly provided with two positioning rods, and the positioning rods penetrate through the cover plate and are fixedly connected with the positioning seats and the reeds; the two ends of the elastic piece abut against the cover plate and the positioning base respectively, at least part of the elastic piece is located in the first hole groove, the radial size of the elastic piece is matched with that of the first hole groove, and the elastic piece is of a multi-bend S-shaped structure; and the radio frequency connector is connected to one side, far away from the cover plate, of the base body. The double-pole double-throw radio frequency switch is good in reset elasticity and simple in assembly structure, and the transmission frequency is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of electronic components, and in particular to a double-pole double-throw radio frequency switch. Background Art

[0002] Coaxial RF switches are widely used in ATE test equipment (Automatic Test Equipment), radar and communication fields. Their structure consists of RF modules, electromagnetic transmission components and control circuits. The working principle of coaxial RF switches is based on the combination of electromagnetic induction and mechanical action. When the electromagnetic group generates a magnetic field, it will attract the armature in the armature group, thereby driving the armature to swing. This action will change the contact state of the upper and lower contact spring groups in the guidance system, and the signal conduction and switching can be achieved by controlling different electromagnetic groups.

[0003] In the prior art, the transmission frequency of the double-pole double-throw switch is low and cannot meet the test requirements at higher frequency bands; the use of a single-point fixed contact spring will inevitably cause left and right swings during rapid switching, causing deformation of the contact spring over a long period of time, affecting the test; the reset spring structure is complex to set up and assemble, and the use of a spring has a short lifespan.

[0004] Therefore, it is necessary to provide a new double-pole double-throw radio frequency switch to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a double-pole double-throw radio frequency switch, which has good resetting elasticity and a simple assembly structure and effectively improves the transmission frequency.

[0006] To achieve the above object, the present invention adopts the following technical solution:

[0007] A double-pole double-throw radio frequency switch comprises a radio frequency module, an electromagnetic transmission component and a control module, wherein the radio frequency module comprises:

[0008] matrix;

[0009] A cover plate is fixedly mounted on the base, and a first hole groove is provided on a side of the cover plate away from the base;

[0010] A spring sheet, wherein a first groove is provided on a side of the base body facing the cover plate, the spring sheet axially corresponds to the first groove and is at least partially located in the first groove, the spring sheet has a thickness of 0.05 to 0.1 mm and is provided with reinforcing ribs;

[0011] A positioning seat, corresponding to the spring sheet, is arranged on a side of the cover plate away from the base body;

[0012] Positioning rods, two of which are correspondingly arranged for each positioning seat, the positioning rods pass through the cover plate and are fixedly connected to the positioning seat and the spring sheet;

[0013] An elastic sheet, two ends of which respectively abut against the cover plate and the positioning seat, the elastic sheet is at least partially located in the first hole groove, the radial dimension of the elastic sheet is adapted to the first hole groove, and the elastic sheet is a multi-bend S-shaped structure;

[0014] A radio frequency connector is connected to a side of the base body away from the cover plate.

[0015] As a further improved technical solution of the present invention, the positioning rod includes a rod body and a sleeve, the rod body includes a first rod portion and a second rod portion, the diameter of the first rod portion is larger than the diameter of the second rod portion, the inner diameter of the sleeve is adapted to the second rod portion, and the sleeve is sleeved on the outer periphery of the second rod portion and there is a gap between the sleeve and the first rod portion.

[0016] As a further improved technical solution of the present invention, the cover plate is provided with a first through hole therethrough, the first through hole is adapted to the first rod portion, the spring leaf is provided with a second through hole, the second through hole is adapted to the second rod portion, the spring leaf is fixedly clamped between the first rod portion and the sleeve, and the reinforcing rib is located between the two second through holes.

[0017] As a further improved technical solution of the present invention, the base is provided with a second hole groove, the second hole groove is recessed from the bottom wall of the first groove toward the side away from the cover plate, the aperture of the second hole groove is not less than the diameter of the positioning rod, and the width of the first groove is greater than the aperture of the second hole groove.

[0018] As a further improved technical solution of the present invention, a second groove is provided on a side of the positioning seat facing the cover plate, and the elastic sheet axially corresponds to the second groove.

[0019] As a further improved technical solution of the present invention, a third groove corresponding to the first groove is provided on the side of the cover plate facing the base, and the width of the third groove is greater than the width of the spring leaf and smaller than the width of the first groove.

[0020] As a further improved technical solution of the present invention, the base is provided with a connecting hole which axially penetrates and communicates with the first groove, the connecting hole is adapted to the RF connector, the RF connector is inserted into the connecting hole, the center conductor of the RF connector is at least partially located in the first groove, and the center conductor axially corresponds to at least part of the spring sheet.

[0021] As a further improved technical solution of the present invention, the connecting hole includes a first hole portion, a second hole portion and a connecting wall located between the first hole portion and the second hole portion, the first hole portion is close to the first groove relative to the second hole portion, the aperture of the first hole portion is smaller than the aperture of the second hole portion, and the RF connector at least partially abuts against the connecting wall.

[0022] As a further improved technical solution of the present invention, the plurality of reeds are arranged close to each other end to end, and a avoidance portion is provided at one end of adjacent reeds close to each other, and the one end of adjacent reeds close to each other axially corresponds to the same central conductor.

[0023] As a further improved technical solution of the present invention, a sinking groove is provided on the side of the cover plate away from the base, the positioning seat is arranged in the sinking groove, and the first hole groove is recessed from the bottom wall of the sinking groove toward the side close to the base.

[0024] Compared with the prior art, the beneficial effect of the double-pole double-throw radio frequency switch of the present invention is that: by setting two equal-height positioning rods to fix the positioning seat and the spring, it is ensured that the spring will not swing left and right during the up and down movement, so that the spring is not easy to deform and has a long service life. The base is provided with a first groove to provide space for the spring to move up and down. The thickness of the spring is set between 0.05 and 0.1 mm and is provided with reinforcing ribs. While ensuring that the spring has high strength and elasticity, it can also meet the transmission requirements of high-frequency signals. The spring with a multi-bend S-shaped structure is arranged between the cover plate and the positioning seat, and the cover plate is provided with a first hole groove to limit it. The assembly structure is simple, the elasticity is high, and the service life is long. The transmission frequency of the double-pole double-throw radio frequency switch is high, which can meet the measurement requirements of the high-frequency band. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the internal structure of a double-pole double-throw radio frequency switch according to a specific embodiment of the present invention;

[0026] Figure 2 It is a schematic diagram of a partially exploded structure of a double-pole double-throw radio frequency switch according to a specific embodiment of the present invention;

[0027] Figure 3 It is a schematic diagram of the three-dimensional structure of a radio frequency module according to a specific embodiment of the present invention;

[0028] Figure 4 It is a schematic cross-sectional structure diagram of a radio frequency module according to a specific embodiment of the present invention;

[0029] Figure 5 for Figure 4 Schematic diagram of the enlarged structure of the A area in the middle;

[0030] Figure 6 for Figure 4Schematic diagram of the enlarged structure of the middle B area;

[0031] Figure 7 It is a schematic diagram of the three-dimensional structure of a base body according to a specific embodiment of the present invention;

[0032] Figure 8 It is a schematic diagram of the three-dimensional structure of a base body in another viewing angle according to a specific embodiment of the present invention;

[0033] Fig. 9 It is a schematic diagram of the three-dimensional structure of a cover plate according to a specific embodiment of the present invention;

[0034] Fig.10 It is a schematic diagram of the three-dimensional structure of a cover plate in another viewing angle according to a specific embodiment of the present invention;

[0035] Fig.11 It is a schematic diagram of the three-dimensional structure of a spring piece according to a specific embodiment of the present invention;

[0036] Fig.12 It is a structural schematic diagram of a positioning seat and a positioning rod according to a specific embodiment of the present invention;

[0037] Fig.13 for Fig.12 Schematic diagram of the enlarged structure of the middle C area;

[0038] Fig.14 It is a structural schematic diagram of a positioning rod connecting a positioning seat and a spring leaf according to a specific embodiment of the present invention;

[0039] Fig.15 It is a schematic diagram of assembling a base, a spring and a radio frequency connector according to a specific embodiment of the present invention;

[0040] Fig.16 for Fig.15 Schematic diagram of the enlarged structure of the D region in the middle;

[0041] Fig.17 The standing wave ratio and insertion loss curves of a double-pole double-throw radio frequency switch at a frequency of 40 GHz according to a specific embodiment of the present invention. DETAILED DESCRIPTION

[0042] The exemplary embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. If there are several embodiments, the features of these embodiments can be combined with each other without conflict. When the description refers to the drawings, unless otherwise specified, the same numbers in different drawings represent the same or similar elements. The contents described in the following exemplary embodiments do not represent all embodiments consistent with the present invention; on the contrary, they are only examples of devices, products and / or methods consistent with some aspects of the present invention as recorded in the claims of the present invention.

[0043] The terms used in the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the scope of protection of the present invention. The singular forms "a", "said" or "the" used in the specification and claims of the present invention are also intended to include plural forms, unless the context clearly indicates other meanings.

[0044] It should be understood that the words used in the specification and claims of the present invention, such as "first", "second" and similar words, do not indicate any order, quantity or importance, but are only used to distinguish the names of features. Similarly, words such as "one" or "an" do not indicate a quantitative limitation, but indicate the existence of at least one. Unless otherwise specified, words such as "front", "rear", "upper", "lower" and similar words appearing in the present invention are only for the convenience of explanation and are not limited to a specific position or a spatial orientation. Words such as "include" or "comprise" are an open-ended expression, meaning that the elements appearing before "include" or "comprise" include the elements appearing after "include" or "comprise" and their equivalents, which does not exclude that the elements appearing before "include" or "comprise" may also include other elements. If "several" appears in the present invention, it means two or more.

[0045] See also Figures 1 to 17 As shown, an embodiment of the present invention discloses a double-pole double-throw RF switch, including a RF module 10, an electromagnetic transmission component 20 and a control module 30. The control module 30 controls and drives the electromagnetic transmission component 20 to perform electromagnetic transmission. The electromagnetic transmission component 20 realizes the connection or disconnection of the connector in the RF module 10 through electromagnetic induction and mechanical action.

[0046] The RF module 10, the electromagnetic transmission assembly 20 and the control module 30 can use long screws to relatively fix the mounting plates of the three, and the other moving parts move within the movement range of their respective plates.

[0047] See also Figures 2 to 4As shown, the RF module 10 includes a base 1, a cover plate 2, a spring 3, a positioning seat 4, a positioning rod 5, a spring 6 and a RF connector 7. The cover plate 2 is fixedly covered on the base 1. The base 1 and the cover plate 2 can be fixedly connected by screws or other fasteners. The spring 3 is located between the base 1 and the cover plate 2. The positioning seat 4 is located on the side of the cover plate 2 away from the base 1. The positioning rod 5 passes through the cover plate 2 to fix the spring 3 and the positioning seat 4. The spring 6 is located between the cover plate 2 and the positioning seat 4. The RF connector 7 is plugged into the base 1. The control module 30 controls and drives the electromagnetic transmission component 20 to push the positioning seat 4. The positioning seat 4 drives the positioning rod 5 and the spring 3 to move close to the RF connector 7, so that the spring 3 and the RF connector 7 are in contact and conductive, and pressure is applied to the spring 6; the spring 6 rebounds and drives the positioning seat 4, the positioning rod 5 and the spring 3 to move away from the RF connector 7, so that the spring 3 and the RF connector 7 are disconnected.

[0048] See also Figure 4 , Figure 7 and Fig.15 As shown, a first groove 11 is provided on the side of the base 1 facing the cover plate 2, and the reed 3 axially corresponds to the first groove 11 and is at least partially located in the first groove 11. The first groove 11 is arranged to provide space for the up and down movement of the reed 3. The RF connector 7 is inserted from the side of the base 1 away from the cover plate 2 and is at least partially located in the first groove 11, so as to be able to contact and conduct with the reed 3.

[0049] See also Figure 4 and Fig.10 As shown, the cover plate 2 is provided with a third groove 23 corresponding to the first groove 11 on one side facing the base 1 to further cooperate with the up and down movement of the reed 3. The width of the third groove 23 is greater than the width of the reed 3 and less than the width of the first groove 11.

[0050] See also Fig.15 and Fig.16 As shown, multiple reeds 3 are arranged close to each other in sequence head to tail, and a avoidance portion 33 is provided at one end of adjacent reeds 3 close to each other. In this embodiment, four reeds 3 are provided, and the four reeds 3 are arranged in a circle in a square shape, and avoidance portions 33 are provided at both ends of the reeds 3, so that the reeds 3 are generally trapezoidal in structure as a whole, and the edge angle is about 45°. Furthermore, one end of two adjacent reeds 3 close to each other corresponds axially to the center conductor 71 of the same RF connector 7, and the center conductor 71 is at least partially located in the first groove 11. The first groove 11 is adapted to the four reeds 3, that is, the first groove 11 is in a U-shaped shape, and the four reeds 3 are respectively arranged on the four sides of the first groove 11.

[0051] See also Figure 4 , Figures 6 to 8As shown, the base body 1 is also provided with a connection hole 13 that axially penetrates and communicates with the first groove 11. The connection hole 13 is adapted to the RF connector 7. The RF connector 7 is inserted in the connection hole 13. The central conductor 71 of the RF connector 7 extends from the connection hole 13 to the first groove 11. Further, the connection hole 13 includes a first hole portion 131, a second hole portion 132, and a connecting wall 133 located between the first hole portion 131 and the second hole portion 132, wherein the first hole portion 131 is closer to the first groove 11 relative to the second hole portion 132, and the aperture of the first hole portion 131 is smaller than the aperture of the second hole portion 132, so the connecting wall 133 faces the second hole portion 132, that is, the connecting wall 133 faces the plugging direction of the RF connector 7, and the RF connector 7 at least partially abuts against the connecting wall 133 when it is plugged into the connection hole 13. With such a configuration, there is a step-by-step diameter change in the plugging between the RF connector 7 and the base body 1, which can improve the connection stability between the two and optimize signal transmission.

[0052] See also Figure 3 , Figure 4 and Fig.14 As shown, the positioning seat 4 is arranged on the side of the cover plate 2 away from the base 1 corresponding to the spring 3, and each spring 3 corresponds to a positioning seat 4. Each group of springs 3 and the positioning seat 4 are fixedly connected by two positioning rods 5. The two positioning rods 5 are arranged in parallel and at the same height, and symmetrically connect the spring 3 and the positioning seat 4. With such an arrangement, when the electromagnetic transmission component 20 applies pressure to the positioning seat 4, the positioning seat 4 can synchronously drive the spring 3 to move axially, that is, move up and down, through the two positioning rods 5, and can ensure that the spring 3 will not swing left and right during the up and down movement, so that the spring 3 is not easy to deform and has a long service life, and the signal transmission is more stable.

[0053] For further information, see Figure 4 , Figure 6 , Figure 12 to Figure 14As shown, the positioning rod 5 includes a rod body 51 and a sleeve 52, and the sleeve 52 is arranged on the outer periphery of the rod body 51. The rod body 51 includes a first rod portion 511 and a second rod portion 512, wherein the first rod portion 511 is closer to the positioning seat 4 relative to the second rod portion 512, and the diameter of the first rod portion 511 is greater than the diameter of the second rod portion 512, the inner diameter of the sleeve 52 is adapted to the second rod portion 512, the first rod portion 511 is fixedly connected to the positioning seat 4, and the sleeve 52 is sleeved on the outer periphery of the second rod portion 512 and there is a gap between the sleeve 52 and the first rod portion 511. The cover plate 2 is provided with a first through hole 22, which is adapted to the first rod 511, and the first rod 511 is at least partially located in the first through hole 22; the spring leaf 3 is provided with a second through hole 32, which is adapted to the second rod 512, and the second rod 512 penetrates the second through hole 32 and is at least partially located on the side of the second through hole 32 away from the first through hole 22; the sleeve 52 is inserted into the second rod 512 from the side of the second rod 512 away from the first rod 511 to abut the spring leaf 3, and the spring leaf 3 is fixedly clamped between the first rod 511 and the sleeve 52, and the two sides of the spring leaf 3 are respectively abutted against the first rod 511 and the sleeve 52. In this way, the fixed connection between the positioning seat 4 and the spring leaf 3 is realized with a simple and low-cost structure, so that the two move up and down synchronously, and the plane overlap of the positioning seat 4 and the spring leaf 3 is guaranteed, and it is easy to disassemble and assemble.

[0054] In some embodiments, the positioning seat 4 and the rod body 51 are integrally provided.

[0055] See also Figure 4 , Figure 6 and Figure 7 As shown, the base body 1 is provided with a second hole groove 12, which is recessed from the bottom wall of the first groove 11 toward the side away from the cover plate 2, and the aperture of the second hole groove 12 is not less than the diameter of the positioning rod 5, and the width of the first groove 11 is greater than the aperture of the second hole groove 12. The second hole groove 12 is a gap-avoiding treatment made by the base body 1 for the positioning rod 5, providing space for the up and down movement of the positioning rod 5. Because the positioning rod 5 passes through the spring leaf 3 and extends to the bottom wall of the first groove 11, the first groove 11 mainly provides movement space for the spring leaf 3 and limits the movement range of the spring leaf 3, so it is necessary to provide an operating space for the positioning rod 5 at the same time, and it can also avoid signal interference, and the impedance can be adjusted to meet actual needs.

[0056] See also Figure 4 , 6 and Fig.10As shown, a third groove 23 is provided on the side of the cover plate 2 facing the base 1, the third groove 23 corresponds to the first groove 11, the first through hole 22 penetrates and communicates with the third groove 23, and the width of the third groove 23 is greater than the width of the spring 3 and less than the width of the first groove 11. The third groove 23 is provided so that when the spring 6 drives the positioning seat 4 and the spring 3 to move away from the RF connector 7, a certain escape space is provided for the spring 3 to prevent it from colliding with the cover plate 2.

[0057] See also Figure 4 , Figure 6 , Fig.14 and Fig.15 As shown, the thickness of the reed 3 of this embodiment is set at 0.05-0.1mm, and it is made of beryllium bronze material. Its thickness is greatly reduced compared with the prior art. While ensuring effective resilience, the signal transmission frequency is increased, so that the double-pole double-throw RF switch meets the high-frequency measurement requirements. If the reed 3 is too thin and less than 0.05mm, it is too soft to reset and rebound. If it is higher than 0.1mm, the high-frequency signal transmission frequency is low, and it is not easy to deform and contact and fit with the end face of the curved center conductor 71. Furthermore, the reed 3 is provided with a reinforcing rib 31 to enhance the strength of the reed 3. The reinforcing rib 31 is arranged at the center of the reed 3, and the two second through holes 32 are symmetrically arranged on both sides of the reinforcing rib 31. The shape of the reinforcing rib 31 can be set to a U-shape, a circle or a diamond shape, and is preferably a shape symmetrical on both sides, so that the overall structure of the reed 3 is symmetrical.

[0058] See also Figure 4 , Figure 5 , Fig. 9 and Fig.12 As shown, the two ends of the spring piece 6 abut against the cover plate 2 and the positioning seat 4 respectively. The side of the cover plate 2 away from the base 1, that is, the side facing the positioning seat 4, is provided with a first hole 21. The spring piece 6 is at least partially located in the first hole 21. The radial size of the spring piece 6 is adapted to the first hole 21, and one end of the spring piece 6 abuts against the bottom wall of the first hole 21. Further, the side of the positioning seat 4 facing the cover plate 2 is provided with a second groove 41. The second groove 41 corresponds to the spring piece 6 and the first hole 21 in the axial direction. The spring piece 6 is at least partially located in the second groove 41, and the other end of the spring piece 6 abuts against the bottom wall of the second groove 41. In this way, a simple structure is provided on the cover plate 2 and the positioning seat 4 to limit the spring piece 6. The assembly is simple, so that the spring piece 6 can only move in the axial direction, that is, the up and down direction, and no unnecessary displacement in the radial direction will be generated, thereby ensuring its effective resilience.

[0059] See also Figure 5 and Fig.11As shown, the spring piece 6 of this embodiment is a multi-bend S-shaped structure, and is made of 0.1mm thick beryllium bronze material. Compared with the existing reset spring, it has a simple structure while ensuring reset elasticity, and is simple to manufacture. Compared with the existing reset spring, it has higher elasticity and longer service life. Specifically, the spring piece 6 has multiple reverse bending structures, and the multiple reverse bending structures are arranged oppositely in the radial direction, for example, from Figure 5 In the middle, the spring piece 6 first extends horizontally from the left to the right from top to bottom, then bends downward in the opposite direction to extend horizontally from the right to the left, then bends downward in the opposite direction to extend horizontally from the left to the right, and repeats this process, and the number of bending structures on the left and right sides is the same. With this arrangement, the spring piece 6 has a higher resilience and its resilience can always be maintained on the midline.

[0060] See also Figures 1 to 4 , Fig. 9 As shown, a side of the cover plate 2 away from the base 1 is further provided with a sinking groove 24, and the positioning seat 4 is arranged in the sinking groove 24, then the first hole groove 21 is recessed from the bottom wall of the sinking groove 24 toward the side close to the base 1, and the first through hole 22 penetrates and connects the sinking groove 24. The setting of the sinking groove 24 limits the movement range of the positioning seat 4, and enables the side of the electromagnetic transmission component 20 close to the radio frequency module to be tightly connected with the cover plate 2.

[0061] See also Fig.17 As shown, the double-pole double-throw radio frequency switch of this embodiment can achieve a transmission frequency of 40 GHz by designing the structural dimensions of the reed 3 and the structural dimensions of the internal slots and holes of the base 1, which greatly improves the transmission frequency and can meet the measurement requirements of higher frequency bands. Four groups of positioning seats 4 and reeds 3 are set, and the electromagnetic transmission assembly 20 is pressed downward by two groups of push rod assemblies, wherein each group of push rod assemblies simultaneously applies pressure to two adjacent positioning seats 4, so as to maintain the force balance of each positioning seat 4, thereby making each reed 3 move synchronously, ensuring the efficiency and stability of signal transmission.

[0062] In summary, compared with the prior art, the double-pole double-throw radio frequency switch of the present invention has the following advantages: by setting two equal-height positioning rods 5 to fix the positioning seat 4 and the reed 3, it is ensured that the reed 3 will not swing left and right during the up and down movement, so that the reed 3 is not easy to deform and has a long service life, and the base 1 is provided with a first groove 11 to provide space for the reed 3 to move up and down. The thickness of the reed 3 is set between 0.05 and 0.1 mm and is provided with a reinforcing rib 31. While ensuring that the reed 3 has high strength and elasticity, it can also meet the transmission requirements of high-frequency signals. The spring 6 with a multi-bend S-shaped structure is arranged between the cover plate 2 and the positioning seat 4, and the cover plate 2 is provided with a first hole groove 21 to limit it. The assembly structure is simple, the elasticity is high, and the service life is long. The transmission frequency of the double-pole double-throw radio frequency switch is high, which can meet the measurement requirements of the high-frequency band.

[0063] The above implementation modes are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. The understanding of this specification should be based on the technical personnel in the relevant technical field. Although this specification has described the present invention in detail with reference to the above embodiments, ordinary technical personnel in the field should understand that the technical personnel in the relevant technical field can still modify or replace the present invention with equivalents, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. A double-pole double-throw radio frequency switch, comprising a radio frequency module (10), an electromagnetic transmission component (20) and a control module (30), characterized in that: The radio frequency module (10) comprises: Matrix (1); A cover plate (2) is fixedly mounted on the base (1), and a first hole groove (21) is provided on a side of the cover plate (2) away from the base (1); A spring leaf (3), wherein a first groove (11) is provided on a side of the base (1) facing the cover plate (2), the spring leaf (3) axially corresponds to the first groove (11) and is at least partially located in the first groove (11), the thickness of the spring leaf (3) is 0.05 to 0.1 mm and the spring leaf (3) is provided with a reinforcing rib (31); A positioning seat (4) is arranged corresponding to the spring leaf (3) on a side of the cover plate (2) away from the base body (1); Positioning rods (5), two of which are correspondingly arranged for each positioning seat (4), and the positioning rods (5) pass through the cover plate (2) and are fixedly connected to the positioning seat (4) and the spring leaf (3); An elastic sheet (6), the two ends of which respectively abut against the cover plate (2) and the positioning seat (4), the elastic sheet (6) is at least partially located in the first hole groove (21), the radial dimension of the elastic sheet (6) is adapted to the first hole groove (21), and the elastic sheet (6) is a multi-bend S-shaped structure; A radio frequency connector (7) is connected to a side of the base (1) away from the cover plate (2).

2. The double-pole double-throw radio frequency switch according to claim 1, characterized in that: The positioning rod (5) comprises a rod body (51) and a sleeve (52); the rod body (51) comprises a first rod portion (511) and a second rod portion (512); the diameter of the first rod portion (511) is greater than the diameter of the second rod portion (512); the inner diameter of the sleeve (52) is adapted to the second rod portion (512); the sleeve (52) is sleeved on the outer circumference of the second rod portion (512) and a gap is present between the sleeve (52) and the first rod portion (511).

3. The double-pole double-throw radio frequency switch according to claim 2, characterized in that: The cover plate (2) is provided with a first through hole (22) extending therethrough, the first through hole (22) being adapted to the first rod portion (511), the leaf spring (3) is provided with a second through hole (32), the second through hole (32) being adapted to the second rod portion (512), the leaf spring (3) being fixedly clamped between the first rod portion (511) and the sleeve (52), and the reinforcing rib (31) being located between the two second through holes (32).

4. The double-pole double-throw radio frequency switch according to claim 1, characterized in that: The base body (1) is provided with a second hole groove (12), the second hole groove (12) is recessed from the bottom wall of the first groove (11) toward a side away from the cover plate (2), the aperture of the second hole groove (12) is not less than the diameter of the positioning rod (5), and the width of the first groove (11) is greater than the aperture of the second hole groove (12).

5. The double-pole double-throw radio frequency switch according to claim 1, characterized in that: A second groove (41) is provided on a side of the positioning seat (4) facing the cover plate (2), and the elastic sheet (6) axially corresponds to the second groove (41).

6. The double-pole double-throw radio frequency switch according to claim 1, characterized in that: A third groove (23) corresponding to the first groove (11) is provided on the side of the cover plate (2) facing the base body (1), and the width of the third groove (23) is greater than the width of the reed (3) and smaller than the width of the first groove (11).

7. The double-pole double-throw radio frequency switch according to claim 1, characterized in that: The base body (1) is provided with a connecting hole (13) which axially penetrates and communicates with the first groove (11); the connecting hole (13) is adapted to the radio frequency connector (7); the radio frequency connector (7) is inserted into the connecting hole (13); a central conductor (71) of the radio frequency connector (7) is at least partially located in the first groove (11); and the central conductor (71) axially corresponds to at least a portion of the spring sheet (3).

8. The double-pole double-throw radio frequency switch according to claim 7, characterized in that: The connecting hole (13) comprises a first hole portion (131), a second hole portion (132) and a connecting wall (133) located between the first hole portion (131) and the second hole portion (132); the first hole portion (131) is closer to the first groove (11) than the second hole portion (132); the aperture of the first hole portion (131) is smaller than the aperture of the second hole portion (132); and the radio frequency connector (7) at least partially abuts against the connecting wall (133).

9. The double-pole double-throw radio frequency switch according to claim 7, characterized in that: The plurality of reeds (3) are arranged close to each other end to end, and a avoidance portion (33) is provided at one end of the adjacent reeds (3) close to each other, and the one end of the adjacent reeds (3) close to each other axially corresponds to the same central conductor (71).

10. The double-pole double-throw radio frequency switch according to claim 1, characterized in that: A sinking groove (24) is provided on a side of the cover plate (2) away from the base (1), the positioning seat (4) is arranged in the sinking groove (24), and the first hole groove (21) is recessed from the bottom wall of the sinking groove (24) toward a side close to the base (1).

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