Short circuit device for antenna tuning unit and antenna tuning unit

Abstract

The invention discloses a short circuit device for an antenna tuning unit and the antenna tuning unit. The short circuit device comprises a short circuit device, a guide rail, a pulley, a counterweight device and a lifting rope, the guide rail penetrates through the short circuit device; the short circuit device is located between the inductor and the curved bar, and the inductor and the curved bar are in contact with different ends and different sides of the short circuit device respectively; when the inductor rotates, the short circuit device can synchronously slide up and down along the guide rail, and is always in contact with the inductor and the curved bar; one end of the lifting rope is connected with the short connector, and the other end of the lifting rope penetrates through the pulley and then is fixedly connected with the counterweight device. According to the short circuit device for the antenna tuning unit and the antenna tuning unit disclosed by the invention, the impedance matching network can be dynamically adjusted.

Description

Technical Field

[0001] The present invention relates to the technical field of radar antennas, and specifically to a short - circuiting device for an antenna tuning unit and an antenna tuning unit. Background Art

[0002] A line tuning unit is an impedance matching network between a transmitter and an antenna. It can match the impedance between the transmitter and the antenna, so that the antenna has the maximum radiation power at any frequency, and is widely used in short - wave radio stations.

[0003] An antenna is not an isolated component, but a complex integrated system with changing electromagnetic characteristics. When the surrounding environment changes, the input impedance of the antenna will change accordingly, resulting in impedance mismatch between the circuit and the antenna. The antenna tuning unit can maximize the matching degree between the circuit and the antenna, improve the circuit efficiency, reduce power loss, lower the requirement for the impedance adjustment range at the impedance end, and avoid the problem that the complex and changeable environment changes the antenna impedance, resulting in antenna - circuit mismatch.

[0004] In the prior art, there is no mechanical - type impedance matching device. A mechanical - type impedance matching adjustment device needs to short - circuit components dynamically according to the actual situation to short - circuit part of the inductance coil, so as to change the inductance value and dynamically maintain the matching degree between the circuit and the antenna. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: to provide a mechanical - type short - circuiting device for dynamically adjusting impedance matching.

[0006] To solve the above - mentioned technical problem, the present invention provides the following technical solutions:

[0007] A short - circuiting device for an antenna tuning unit, comprising: a short - circuiting device 161, a guide rail 162, a pulley 163, a counterweight 164 and a suspension rope 165; the guide rail 162 passes through the short - circuiting device 161; the short - circuiting device 161 is located between an inductor 120 and a curved rod 150, and the inductor 120 and the curved rod 150 are in contact with different ends and different sides of the short - circuiting device 161 respectively; when the inductor 120 rotates, the short - circuiting device 161 can slide up and down along the guide rail 162 synchronously and always keep in contact with the inductor 120 and the curved rod 150; one end of the suspension rope 165 is connected to the short - circuiting device 161, and the other end is fixedly connected to the counterweight 164 after passing through the pulley 163.

[0008] Advantages: The short - circuiting device is in contact with the inductor and the curved rod at the same time. When the inductor rotates, through the counterweight, the short - circuiting device moves up and down along the guide rail synchronously to short - circuit part of the inductor coil, dynamically adjust the inductance value and coordinate the impedance matching network.

[0009] In one embodiment of the present invention, the short-circuit 161 includes a slider 1611, a clip 1612, a short-circuit tube 1613 and a torque adjustment device 1614; one end of the slider 1611 limits the inductor 120, and can slide up and down synchronously along the coil of the inductor 120 when the inductor 120 rotates, one end of the clip 1612 is detachably connected to the other end of the slider 1611, and the torque adjustment device 1614 passes through the short-circuit tube 1613 and is detachably connected to the clip 1612. The clip 1612 can rotate on the slider 1611 to adjust the fixed angle and adjust the position of the short tube 1613 in conjunction with the short tube 1613 so that both ends of the short tube 1613 are in contact with the inductor 120 and the bent rod 150 to short-circuit part of the coil of the inductor 120; the torque adjustment device 1614 can adjust the torque in two different ways so that the torque acts on the short tube 1613 to ensure the reliability of the contact between the short tube 1613 and the inductor 120 and the bent rod 150.

[0010] In one embodiment of the present invention, a through hole 16111 is provided at one end of the slider 1611, and the guide rail 162 passes through the through hole 16111; a wiring hole 16112 is provided on one side of the through hole 16111, and one end of the suspension rope 165 is fixedly connected to the slider 1611 through the wiring hole 16112.

[0011] In one embodiment of the present invention, limiting lugs 16113 are formed by extending in the same direction along the upper surface and the lower surface of the through hole 16111, and the coil of the inductor 120 is located in a pair of limiting lugs 16113; one end of the clip 1612 is detachably connected to the torque adjustment device 1614 at the other end of the slider 1611.

[0012] In an embodiment of the present invention, the contact end of the short tube 1613 and the inductor 120 is in a hemispherical shape, and the contact end of the short tube 1613 and the curved rod 150 is in a cylindrical shape.

[0013] In one embodiment of the present invention, a protrusion 16115 is further provided on the slider 1611; the protrusion 16115 is located at the turning point of the limiting lug 16113 and close to the semi-spherical end of the short tube 1613, and the protruding direction is the same as the extending direction of the limiting lug 16113, and is used to limit the rotation angle of the short tube 1613 and simultaneously make the semi-spherical end of the short tube 1613 contact with the inductor 120.

[0014] In an embodiment of the present invention, the torque adjusting device 1614 includes a rotating shaft 16141, a torsion spring 16142, and an angle limiting block 16143; the rotating shaft 16141 sequentially passes through one side housing of the short pipe 1613 and is located inside the short pipe 1613, then passes through the angle limiting block 16143 and the torsion spring 16142, and passes through the other side housing of the short pipe 1613 and is detachably connected to the clip 1612.

[0015] In an embodiment of the present invention, a plurality of torsion spring fixing holes 16144 are uniformly arranged on the angle limiting block 16143, and both ends of the torsion spring 16142 are respectively connected to the torsion spring fixing holes 16144 and the short pipe 1613. By adjusting and replacing the connection with different torsion spring fixing holes 16144 through the torsion spring 16142, the torque of the torsion spring 16142 can be adjusted.

[0016] In an embodiment of the present invention, by adjusting the installation angle of the rotating shaft 16141 and synchronously adjusting the rotation angle of the angle limiting block 16143, the torque of the torsion spring 16142 can also be adjusted without adjusting and replacing the torsion spring fixing holes 16144 to which the torsion spring 16142 is connected.

[0017] In an embodiment of the present invention, the torques provided by the torsion spring 16142 act on both ends of the short pipe 1613 respectively, and the two torque directions are opposite, so that the semi-spherical end of the short pipe 1613 closely adheres to the inductor 120, and the cylindrical end of the short pipe 1613 closely adheres to the curved rod 150.

[0018] In an embodiment of the present invention, the pulley 163 is fixedly located on the top plate 1120; the other end of the lifting rope 165 passes through the pulley 163 and is fixedly connected to the counterweight 164, and a guiding cylinder 1110 is further arranged on the frame 1100, and the counterweight 164 is located inside the guiding cylinder 1110.

[0019] The present invention also provides an antenna tuning unit, including the short-circuiting device for the antenna tuning unit described above.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: The torque adjusting device provides two ways to increase the torque, and the torque directions are different, so that both ends of the short pipe closely adhere to the inductor and the curved rod, ensuring the reliability of the short circuit. The cooling path of the inductor makes the inductor and the curved rod not only connection components but also act as cooling pipes, improving the utilization rate of components and the utilization rate of the assembly space. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 and Figure 2Schematic diagram of a short - circuit device for an antenna tuning unit according to an embodiment of the present invention.

[0022] Figures 3 to 5 Schematic diagram of a short - circuit connector according to an embodiment of the present invention.

[0023] Figure 6 Schematic diagram of an antenna tuning unit according to an embodiment of the present invention. Detailed implementation manners

[0024] To facilitate those skilled in the art to understand the technical solution of the present invention, the technical solution of the present invention will be further described below in conjunction with the accompanying drawings of the specification.

[0025] The terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more, unless otherwise specifically defined.

[0026] Embodiment 1

[0027] Please refer to Figure 1 and Figure 2 As shown, the present invention discloses a short - circuit device for an antenna tuning unit, including: a short - circuit connector 161, a guide rail 162, a pulley 163, a counterweight 164, and a suspension rope 165. The guide rail 162 passes through the short - circuit connector 161. The short - circuit connector 161 is located between the inductor 120 and the curved rod 150, and the inductor 120 and the curved rod 150 are respectively in contact with different ends and different sides of the short - circuit connector 161. When the inductor 120 rotates, the short - circuit connector 161 can slide up and down along the guide rail 162 synchronously and always remain in contact with the inductor 120 and the curved rod 150. One end of the suspension rope 165 is connected to the short - circuit connector 161, and the other end is fixedly connected to the counterweight 164 after passing through the pulley 163.

[0028] Please refer to Figures 1 to 5As shown, in one embodiment of the present invention, the short-circuit 161 includes a slider 1611, a clip 1612, a short-circuit tube 1613 and a torque adjustment device 1614. One end of the slider 1611 limits the inductor 120, and can slide up and down synchronously along the coil of the inductor 120 when the inductor 120 rotates. One end of the clip 1612 is detachably connected to the other end of the slider 1611, and the torque adjustment device 1614 is detachably connected to the clip 1612 after passing through the short-circuit tube 1613. The clip 1612 can rotate on the slider 1611 to adjust the fixed angle, and the position of the short-circuit tube 1613 is adjusted in linkage, so that the two ends of the short-circuit tube 1613 are in contact with the inductor 120 and the bent rod 150 to short-circuit part of the coil of the inductor 120. The torque adjustment device 1614 can adjust the torque in two different ways so that the torque acts on the short pipe 1613 to ensure the reliability of the contact between the short pipe 1613 and the inductor 120 and the bent rod 150 .

[0029] One end of the slider 1611 is provided with a through hole 16111, and the guide rail 162 passes through the through hole 16111. A wiring hole 16112 is provided on one side of the through hole 16111, and one end of the suspension rope 165 is fixedly connected to the slider 1611 through the wiring hole 16112.

[0030] The upper and lower surfaces of the through hole 16111 extend in the same direction to form a pair of limiting lugs 16113, and the coil of the inductor 120 is located in a pair of limiting lugs 16113. One end of the clip 1612 is detachably connected to the torque adjustment device 1614 on the other end of the slider 1611.

[0031] The contact end of the short tube 1613 and the inductor 120 is in a hemispherical shape, and the contact end of the short tube 1613 and the bent rod 150 is in a cylindrical shape.

[0032] A protrusion 16115 is also provided on the slider 1611. The protrusion 16115 is located at the turning point of the limiting lug 16113 and is close to the semi-spherical end of the short tube 1613. The protruding direction is in the same direction as the extending direction of the limiting lug 16113, and is used to limit the rotation angle of the short tube 1613 and at the same time make the semi-spherical end of the short tube 1613 contact with the inductor 120.

[0033] The torque adjustment device 1614 includes a rotating shaft 16141, a torsion spring 16142 and an angle stopper 16143. The rotating shaft 16141 passes through one side housing of the short tube 1613 in sequence and is located inside the short tube 1613, passes through the angle stopper 16143 and the torsion spring 16142 again, and passes through the other side housing of the short tube 1613 and is detachably connected to the clip 1612.

[0034] A plurality of torsion spring fixing holes 16144 are evenly arranged on the angle limit block 16143, and the two ends of the torsion spring 16142 are respectively connected to the torsion spring fixing holes 16144 and the short pipe 1613, and the torsion spring 16142 can be adjusted and replaced to connect to different torsion spring fixing holes 16144, so that the torque of the torsion spring 16142 can be adjusted.

[0035] By adjusting the installation angle of the rotating shaft 16141 and the rotating angle of the angle limit block 16143 simultaneously, the torque of the torsion spring 16142 can also be adjusted without adjusting or replacing the torsion spring fixing hole 16144 connected to the torsion spring 16142 .

[0036] The torsion force provided by the torsion spring 16142 acts on the two ends of the short tube 1613 respectively. The two torsion forces are in opposite directions, so that the semi-spherical end of the short tube 1613 is closely attached to the inductor 120 , and the cylindrical end of the short tube 1613 is closely attached to the curved rod 150 .

[0037] See also Figures 1 to 5 As shown, in one embodiment of the present invention, the pulley 163 is fixed on the top plate of the frame, the other end of the suspension rope 165 passes through the pulley 163 and is fixedly connected to the counterweight 164, and a guide cylinder 1110 is also provided on the frame of the frame, and the counterweight 164 is located in the guide cylinder 1110. Except for the guide rail 162 which is made of ceramic material, the materials of other components are all conductive.

[0038] In this embodiment, the inductor 120 is a coil formed by winding, and the inside is a hollow copper tube, the interfaces at both ends are open, and the two ends are respectively connected to the first liquid cooling device 510 and the second liquid cooling device 520, and one end of the curved rod 150 is connected to the first liquid cooling device 510 and the other end is connected to the water culvert device 530, forming a cooling path for the inductor 120. Liquid cooling water enters from the second liquid cooling device 520 and exits from the water culvert device 530. Among them, the curved rod 150 is also hollow, so that the inductor 120 and the curved rod 150 are both connecting devices and cooling pipes, which fully improves the utilization space in the frame.

[0039] When the inductor 120 rotates, the slider 1611 can slide up and down along the guide rail 162 synchronously, and the short-circuit tube 1613 always keeps in contact with the inductor 120 and the curved rod 150 to short-circuit part of the coil of the inductor 120 and change the inductance value of the inductor 120.

[0040] To ensure smooth up-and-down movement of the slider 1611, the slider 1611 is made of polytetrafluoroethylene material, and the guide rail 162 is made of ceramic material. When the two materials slide against each other, the friction coefficient is small. To prevent the slider 1611 from jamming due to eccentricity during up-and-down sliding, an appropriate counterweight is added to the slider 1611. The counterweight is realized by the counterweight device 164. The counterweight device 164 moves along the guide cylinder 1110 without deviation. Under the action of the counterweight device 164, the slider 1611 always receives an upward pulling force, which can keep the relative position relationship between the slider 1611 and the guide rail 162. The pulling force can be adjusted by adding or removing counterweight blocks at the tail of the counterweight device 164. When the inductor 120 rotates, the slider 1611 moves up and down synchronously through the counterweight device 164.

[0041] Embodiment 2

[0042] Please refer to Figures 1 to 6 As shown, the present invention also provides an antenna tuning unit, which includes a frame 1000, and a first tuning device 100 and a second tuning device 200 symmetrically arranged within the frame 1000. It also includes a feeder device 300 and an external device 400 connected to the first tuning device 100 and the second tuning device 200.

[0043] The first tuning device 100 includes a first transmission device 110, an inductor 120, a first capacitor 130, a second capacitor 140, a curved rod 150, a short-circuit device 160, a second transmission device 170, and a third transmission device 180.

[0044] The output end of the first transmission device 110, the inductor 120, the first capacitor 130, and the second transmission device 170 are longitudinally coaxially arranged and connected in sequence; one end of the curved rod 150 is connected to the inductor 120, and the other end is connected to the second capacitor 140 and the third transmission device 180 in sequence.

[0045] The short-circuit device 160 is in contact with both the inductor 120 and the curved rod 150, and moves up and down synchronously with the rotation of the inductor 120 to adjust the inductance value. The second transmission device 170 and the third transmission device 180 rotate to adjust the overlapping area of the two metal plates in the first capacitor 130 and the second capacitor 140 to adjust the capacitance value.

[0046] In an embodiment of the present invention, the first transmission device 110 has two output ends, which are respectively connected to the inductors in the first tuning device 100 and the second tuning device 200. The two output ends of the first transmission device 110 rotate synchronously and in the same direction. And the third transmission device 180 is connected to the second capacitors in both the first tuning device 100 and the second tuning device 200 at the same time. Specifically, the first capacitor 130 is a variable capacitor.

[0047] It is obvious to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention, and any reference signs in the claims should not be regarded as limiting the claims involved.

[0048] The above-described embodiments merely represent the implementation manners of the invention. The protection scope of the present invention is not limited to the above embodiments. For those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, and these all belong to the protection scope of the present invention.

Claims

1. A short-circuiting device for an antenna tuning unit, characterized in that: include: A short circuit (161), a guide rail (162), a pulley (163), a counterweight (164) and a suspension rope (165); the guide rail (162) passes through the short circuit (161); the short circuit (161) is located between the inductor (120) and the bent rod (150), and the inductor (120) and the bent rod (150) are respectively in contact with different ends and sides of the short circuit (161); when the inductor (120) rotates, the short circuit (161) can synchronously slide up and down along the guide rail (162) and always keep in contact with the inductor (120) and the bent rod (150); one end of the suspension rope (165) is connected to the short circuit (161), and the other end passes through the pulley (163) and is fixedly connected to the counterweight (164).

2. A short-circuiting device for an antenna tuning unit according to claim 1, characterized in that: The short-circuit (161) comprises a slider (1611), a clip (1612), a short-circuit tube (1613) and a torque adjustment device (1614); one end of the slider (1611) limits the inductor (120), and can slide up and down synchronously along the coil of the inductor (120) when the inductor (120) rotates; one end of the clip (1612) is detachably connected to the other end of the slider (1611); the torque adjustment device (1614) passes through the short-circuit tube (1613) and is detachably connected to the clip (1612); The clip (1612) can rotate on the slider (1611) to adjust the fixed angle, and thus adjust the position of the short tube (1613) in a linked manner, so that both ends of the short tube (1613) are in contact with the inductor (120) and the bent rod (150), so as to short-circuit part of the coil of the inductor (120); the torque adjustment device (1614) can adjust the magnitude of the torque in two different ways, so that the torque acts on the short tube (1613), so as to ensure the reliability of the contact between the short tube (1613) and the inductor (120) and the bent rod (150).

3. A short-circuiting device for an antenna tuning unit according to claim 2, characterized in that: A through hole (16111) is provided at one end of the slider (1611), and the guide rail (162) passes through the through hole (16111); a wiring hole (16112) is provided on one side of the through hole (16111), and one end of the suspension rope (165) is fixedly connected to the slider (1611) through the wiring hole (16112).

4. A short-circuiting device for an antenna tuning unit according to claim 3, characterized in that: Extending in the same direction along the upper surface and the lower surface of the through hole (16111), a limiting lug (16113) is formed, and the coil of the inductor (120) is located in a pair of the limiting lugs (16113); One end of the clip (1612) is detachably connected to the torque adjustment device (1614) at the other end of the slider (1611).

5. A short-circuiting device for an antenna tuning unit according to claim 2, characterized in that: The contact end between the short tube (1613) and the inductor (120) is arranged in a hemispherical shape, and the contact end between the short tube (1613) and the bent rod (150) is arranged in a cylindrical shape.

6. A short-circuiting device for an antenna tuning unit according to claim 2, characterized in that: The slider (1611) is also provided with a convex portion (16115); the convex portion (16115) is located at the turning point of the limiting lug (16113) and is close to the semi-spherical end of the short tube (1613), and the protruding direction is in the same direction as the extending direction of the limiting lug (16113), so as to limit the rotation angle of the short tube (1613) and simultaneously make the semi-spherical end of the short tube (1613) contact with the inductor (120).

7. A short-circuit device for an antenna tuning unit according to claim 2, characterized in that: The torque adjustment device (1614) comprises a rotating shaft (16141), a torsion spring (16142) and an angle limit block (16143); the rotating shaft (16141) sequentially passes through a shell on one side of the short tube (1613) and is located inside the short tube (1613), passes through the angle limit block (16143) and the torsion spring (16142) again, and passes through the shell on the other side of the short tube (1613) and is detachably connected to the clip (1612).

8. A short-circuiting device for an antenna tuning unit according to claim 7, characterized in that: A plurality of torsion spring fixing holes (16144) are evenly arranged on the angle limit block (16143), and the two ends of the torsion spring (16142) are respectively connected to the torsion spring fixing holes (16144) and the short pipe (1613), and the torsion spring (16142) can be adjusted and replaced to connect to different torsion spring fixing holes (16144), so that the torque of the torsion spring (16142) can be adjusted.

9. A short-circuiting device for an antenna tuning unit according to claim 8, characterized in that: By adjusting the installation angle of the rotating shaft (16141) and synchronously adjusting the rotating angle of the angle limit block (16143), the torque of the torsion spring (16142) can also be adjusted without adjusting or replacing the torsion spring fixing hole (16144) connected to the torsion spring (16142).

10. A short-circuit device for an antenna tuning unit according to claim 7, characterized in that: The torsion force provided by the torsion spring (16142) acts on the two ends of the short tube (1613) respectively, and the two torsion forces are in opposite directions, so that the semi-spherical end of the short tube (1613) is in close contact with the inductor (120), and the cylindrical end of the short tube (1613) is in close contact with the curved rod (150).

11. A short-circuit device for an antenna tuning unit according to claim 1, characterized in that: The pulley (163) is fixed on the top plate (1120) of the frame; the other end of the suspension rope (165) passes through the pulley (163) and is fixedly connected to the counterweight (164), and a guide cylinder (1110) is also provided on the frame (1100) of the frame, and the counterweight (164) is located in the guide cylinder (1110).

12. An antenna tuning unit, characterized in that: The invention comprises a short-circuiting device for an antenna tuning unit as described in any one of claims 1 to 11.

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