Single-pole double-throw normally-open radio frequency switch with load

Abstract

The utility model belongs to the technical field of radio frequency switches, and particularly relates to a single-pole double-throw normally-open radio frequency switch with a load. The utility model discloses a radio frequency connector, which comprises a common terminal, two radio frequency terminals, two loads in one-to-one correspondence with the radio frequency terminals, two radio frequency conduction members, two load conduction members, two driving assemblies, a reset mechanism and a control mechanism, wherein the reset mechanism enables the radio frequency conduction members and the load conduction members to recover a non-conduction state when no external force is applied; the control mechanism is electrically connected with the driving assemblies; the control state of the control mechanism includes that the two driving assemblies are not powered on or one driving assembly is powered on. Compared with the prior art, the technical scheme provided by the utility model has the following advantages: only the working states of two equipment signals need to be controlled, so that the power consumption is low and the control is simple under the same condition; signals of the two devices are initially located at the load terminal, for specific scene application, the problem that when the devices are in a no-load mismatch state, a conventional switch can only guarantee that a single-path load terminal cannot achieve the state is better solved, and application of a user can be better met.

Description

Technical Field

[0001] The utility model belongs to the technical field of radio frequency switches, and in particular relates to a single-pole double-throw load-bearing normally-open radio frequency switch. Background Art

[0002] In microwave systems, they are used to control the on / off or switching of microwave signal transmission paths and are commonly used in pulse modulators and radar systems. These switches feature low insertion loss, good isolation, and fast switching speeds, enabling efficient switching between multiple antennas while maintaining signal quality without mismatch.

[0003] Chinese patent CN107181025A discloses a microwave transmission system and an RF coaxial switch. The microwave transmission system operates by causing the dielectric support to move downward as the dielectric seat moves downward, which in turn drives the transmission spring downward, thereby overlapping the transmission spring with the inner conductor of the RF coaxial connector, forming a microwave signal transmission path. The dielectric seat at the other end of the reset spring moves upward, disconnecting its corresponding transmission spring from the inner conductor of the RF coaxial connector. In this scheme, during RF signal transmission, the impedance mismatch between the signal source and the load causes the signal to reflect in the transmission line, thereby affecting signal transmission efficiency and system performance, and resulting in RF signal end opening mismatch.

[0004] In order to solve the above problems, the load can be added to the port. The products on the market currently have the armature mechanism rotating when the core group is energized, so that the load is disconnected when the port is connected, and the port is disconnected when the load is connected. When there is no power, both the port and the load are disconnected.

[0005] In order to achieve that both paths are disconnected at the load end or the no-load end when not in operation, a solid-state switch can only be added to the signal front end. Manual operation is not only inconvenient, but also has large solid-state switch loss and standing wave difference. Utility Model Content

[0006] The utility model provides a single-pole double-throw (SPDT) load-normally-open radio frequency switch, which is used to solve the problem that the current SPDT radio frequency switch cannot disconnect both paths at the load end or the no-load end in a non-working state.

[0007] In order to solve the above technical problems, the technical solution of the utility model is as follows: the single-pole double-throw load normally open radio frequency switch includes a common terminal, two radio frequency terminals, two loads corresponding to the radio frequency terminals, two radio frequency conductive parts, two load conductive parts, two driving components, a reset mechanism for restoring the radio frequency conductive parts and the load conductive parts to a non-conductive state when no external force is applied, and a control mechanism electrically connected to the driving component, wherein the control state of the control mechanism includes de-energizing both driving components or energizing one of the driving components;

[0008] The drive assembly includes an iron core column located above the load conductive member, a load ejector pin disposed in the iron core column, an iron core coil connected to the power supply and located above the radio frequency conductive member, an radio frequency ejector pin disposed in the iron core coil, and a magnetic armature, wherein one end of the magnetic armature is located above the iron core column and the other end is located above the iron core coil;

[0009] Each driving component drives the corresponding RF conductive part through the RF ejector pin, and drives the corresponding load conductive part through the load ejector pin;

[0010] A permanent magnet is provided at one end of the magnetic armature located above the iron core column, and the suction force of the permanent magnet is lower than the suction force generated when the iron core coil is energized.

[0011] When the drive assembly is not powered on, the end of the magnetic armature close to the core column rests against the top of the core column under the action of the permanent magnet, the load conductor falls, and the RF terminal is connected to the corresponding load. At this time, the RF conductor is reset under the action of the reset mechanism, that is, the RF terminal is disconnected from the common terminal.

[0012] When the driving component is energized, the iron core coil generates magnetism, attracting one end of the magnetic armature close to the top, and the RF conductive part falls. The end of the magnetic armature close to the iron core is forced to separate from the iron core column and reset under the action of the reset mechanism, that is, the RF terminal is disconnected from the corresponding load.

[0013] Optionally, the RF conductive component and the load conductive component have the same structure.

[0014] Optionally, the RF conductive component or the load conductive component includes a conductive sheet, a connecting rod linked to the conductive sheet, a plurality of guide columns distributed between the connecting rod and the conductive sheet, and a cover plate for loading the connecting rod, and the reset mechanism is located between the connecting rod and the cover plate.

[0015] Optionally, the top end of the load pin or the radio frequency pin protrudes from the core column or the core coil, and the bottom end is fixed on the corresponding connecting rod.

[0016] Optionally, the drive assembly further comprises a positioning module for accommodating the core column, the core coil and the magnetic armature.

[0017] The technical solution provided by the present invention has the following advantages over the prior art: it only needs to control the working status of the signals of two devices, has low power consumption and simple control under the same conditions; the signals of the two devices are initially at the load terminal, which better solves the device no-load mismatch state in specific scenarios, and conventional switches can only ensure a single-channel load terminal that cannot be achieved, and can better meet the user's application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of a specific embodiment of the single-pole double-throw load normally open radio frequency switch of the utility model;

[0019] Figure 2 This is a structural diagram of a specific embodiment of the first driving component of the present invention;

[0020] Figure 3 It is a structural diagram of a specific implementation of the first radio frequency conductive component of the present invention.

[0021] As shown in the figure:

[0022] 11-common terminal, 12-first RF terminal, 13-first load, 14-second RF terminal, 15-second load, 20-first RF conductive member, 30-first load conductive member, 40-second RF conductive member, 50-second load conductive member, 60-first drive assembly, 70-first drive assembly, 80-reset mechanism, 90-control mechanism;

[0023] 21-conductive sheet, 22-connecting rod, 23-guide column, 24-cover plate;

[0024] 61- iron core column, 62- load thimble, 63- iron core coil, 64- radio frequency thimble, 65- magnetic armature, 66- positioning module, 67- permanent magnet. DETAILED DESCRIPTION

[0025] For ease of understanding, the single-pole double-throw load normally-open radio frequency switch is described below in conjunction with embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations and positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0028] like Figure 1 As shown, the SPDT load-operated normally-open RF switch includes a common terminal 11, a first RF terminal 12, a first load 13 corresponding to the first RF terminal 12, a second RF terminal 14, a second load 15 corresponding to the second RF terminal 14, a first RF conductive member 20, a first load conductive member 30, a second RF conductive member 40, a second load conductive member 50, a first drive component 60, a second drive component 70, a reset mechanism 80 for restoring the RF conductive member and the load conductive member to a non-conductive state when no external force is applied, and a control mechanism 90 electrically connected to the drive component.

[0029] The first RF conductive member 20 is used to conduct electricity between the first RF terminal 12 and the common terminal 11, the second RF conductive member 40 is used to conduct electricity between the second RF terminal 14 and the common terminal 11, the first load conductive member 30 is used to conduct electricity between the first RF terminal 12 and the first load 13, and the second load conductive member 50 is used to conduct electricity between the second RF terminal 14 and the second load 15.

[0030] The first RF conductive component, the second RF conductive component, the first load conductive component, and the second load conductive component have the same structure. Take one of them as an example.

[0031] like Figure 2 As shown, the first drive assembly 60 and the second drive assembly 70 have the same structure. Taking one of them as an example, the first drive assembly 60 includes an iron core column 61 located above the first load conductive member 30, a load ejector pin 62 arranged in the iron core column 61, an iron core coil 63 connected to the power supply located above the first RF conductive member 20, an RF ejector pin 64 arranged in the iron core coil 63, a magnetic armature 65, and a positioning module 66 for accommodating the iron core column 61, the iron core coil 62 and the magnetic armature 65. One end of the magnetic armature 65 is located above the iron core column 61, and the other end is located above the iron core coil 63. A permanent magnet 67 is provided at one end of the magnetic armature 65 located above the iron core column 61. The suction force of the permanent magnet 67 is lower than the suction force generated when the iron core coil 63 is energized.

[0032] like Figure 1-3 As shown, the first RF conductive component 20 includes a conductive sheet 21, a connecting rod 22 linked to the conductive sheet 21, two guide posts 23 distributed between the connecting rod 22 and the conductive sheet 21, and a cover plate 24 for loading the connecting rod 22. The reset mechanism 80 is located between the connecting rod 22 and the cover plate 24. The load pin 62 or RF pin pin 64 protrudes from the core column 61 or the core coil 63, and the bottom end is fixed to the corresponding connecting rod 22.

[0033] In this embodiment, the reset mechanism 80 is a spring.

[0034] Brief introduction of working process:

[0035] The control state of the control mechanism includes that both driving components are not energized or one of the driving components is energized.

[0036] Specifically, when the first drive component and the second drive component are both not powered, under the attraction of the permanent magnet, the magnetic armatures of the two drive components fall and rest against the top of the iron core columns of the first load conductive part and the second load conductive part, so that the first RF terminal and the first load are conductive, and the second RF terminal and the second load are conductive, that is, both paths are at the load end in the non-working state.

[0037] When the control mechanism energizes the first drive assembly, its core coil is energized to generate magnetism. Under the influence of electromagnetic force, the magnetic armature rotates against the upper end of the core coil, pushing the RF push rod downward to press the first RF conductive member, thereby connecting the first RF terminal to the common terminal. Simultaneously, the magnetic armature disengages from the core column, and the reset mechanism moves the first load conductive member upward, disconnecting the first RF terminal from the first load terminal. The same process applies when the control mechanism energizes the second drive assembly.

[0038] It can be found that the control of the control mechanism is simpler than the original technical solution. There is no need to power on the first drive component and the second drive component separately at the same time to control the load end and the RF end respectively, so the power consumption is naturally reduced.

[0039] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art will appreciate that modifications may be made to the technical solutions described in the above embodiments, or that some or all of the technical features therein may be replaced with equivalents. Such modifications or replacements do not deviate from the essence of the corresponding technical solutions within the scope of the various embodiments of the present invention.

Claims

1. A single-pole double-throw load normally open radio frequency switch, characterized in that: The device comprises a common terminal, two radio frequency terminals, two loads corresponding to the radio frequency terminals, two radio frequency conductive parts, two load conductive parts, two driving components, a reset mechanism for restoring the radio frequency conductive parts and the load conductive parts to a non-conductive state when no external force is applied, and a control mechanism electrically connected to the driving components, wherein the control mechanism controls the state including de-energizing both driving components or energizing one of the driving components; The drive assembly includes an iron core column located above the load conductive member, a load ejector pin disposed in the iron core column, an iron core coil connected to the power supply and located above the radio frequency conductive member, an radio frequency ejector pin disposed in the iron core coil, and a magnetic armature, wherein one end of the magnetic armature is located above the iron core column and the other end is located above the iron core coil; Each driving component drives the corresponding RF conductive part through the RF ejector pin, and drives the corresponding load conductive part through the load ejector pin; A permanent magnet is provided at one end of the magnetic armature located above the iron core column, and the attraction between the permanent magnet and the iron core column is lower than the attraction between the iron core coil and the magnetic armature after power is applied.

2. The single-pole double-throw load normally open radio frequency switch according to claim 1, characterized in that: The radio frequency conductive part and the load conductive part have the same structure.

3. The single-pole double-throw load normally open radio frequency switch according to claim 2, characterized in that: The RF conductive part or load conductive part includes a conductive sheet, a connecting rod linked to the conductive sheet, a plurality of guide posts distributed between the connecting rod and the conductive sheet, and a cover plate for loading the connecting rod, and the reset mechanism is located between the connecting rod and the cover plate.

4. The single-pole double-throw load normally open radio frequency switch according to claim 1, characterized in that: The top end of the load thimble or the radio frequency thimble protrudes from the iron core column or the iron core coil, and the bottom end is fixed on the corresponding connecting rod.

5. The single-pole double-throw load normally open radio frequency switch according to claim 1, characterized in that: The drive assembly further includes a positioning module that accommodates the core column, the core coil and the magnetic armature.

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