Miniature single-pole multi-throw radio frequency switch with load

Abstract

The utility model relates to a miniature single-pole multi-throw radio frequency switch with a load. The drive circuit comprises a radio frequency drive and a load drive. The radio frequency driver comprises a metal tube, a coil wound outside the metal tube, a radio frequency upper magnet embedded in the metal tube, a radio frequency push rod and a radio frequency lower magnet arranged at the top end of the radio frequency push rod, the bottom end of the radio frequency push rod is fixedly connected with the corresponding radio frequency reed, and the radio frequency upper magnet and the radio frequency lower magnet are opposite in magnetism; the load driver comprises a metal tube, a coil wound outside the metal tube, a load upper magnet embedded into the metal tube, a load push rod and a load lower magnet arranged at the top end of the load push rod, the bottom end of the load push rod is fixedly connected with the corresponding load reed, and the load upper magnet and the load lower magnet have the same magnetism. According to the technical scheme provided by the utility model, the reed is driven by using the attraction (repulsion) force of the magnet, the load end can be normally connected without electricity by means of the upper and lower magnets, the magnetism can be changed after electrification, and the conduction of the terminal and the end opening of the load can be realized under the action of the attraction and repulsion force of the magnet.

Description

Technical Field

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

[0002] A radio frequency switch, also known as a microwave switch, is a switch that operates in the radio frequency band. Its function is to control the "on" and "off" of radio frequency signals. Chinese patent CN105990626A provides a radio frequency coaxial switch that drives a push rod assembly through a coil assembly and an armature assembly. The specific coil assembly consists of a coil wound on a coil frame and an iron core; the armature assembly includes a soft magnetic armature, a spring, and a rotating shaft; and the push rod assembly includes a push rod, a reaction spring, and an inner conductor sheet. When the armature is attracted by the iron core and rotates, the right end of the spring pushes the push rod assembly downward and causes the inner conductor sheet to contact both terminals at the same time, thereby achieving radio frequency signal transmission.

[0003] In the existing technology, the guide point piece is passed through the reaction spring, and once it fails, there is a risk of mismatch. In addition, the current structure is complex, large in size, and heavy in mass. There are multiple ports and multiple throws, and the load on the ports is further increased. It is even more difficult to design and control the port switching and changing the on-off state. Considering the size of the microwave switch and the space resources occupied by the equipment, the more ports and knife throws there are, the more difficult it is to implement. Utility Model Content

[0004] The utility model provides a miniature single-pole multi-throw load radio frequency switch, which is used to solve the problems of current radio frequency switches such as bulk, complex structure and low assembly efficiency.

[0005] In order to solve the above technical problems, the technical solution of the utility model is as follows: the miniature single-pole multi-throw radio frequency switch includes a common port, multiple radio frequency ports, load ports corresponding to the radio frequency ports one by one, a radio frequency reed connecting the common port and one radio frequency port, a load reed connecting one radio frequency port and the corresponding load port, a radio frequency driver driving the radio frequency reed, a load driver driving the load reed, and a control system electrically connecting the radio frequency driver and the load driver;

[0006] The RF driver includes a metal tube, a coil wound around the metal tube, an RF upper magnet embedded in the metal tube, an RF push rod, and an RF lower magnet arranged at the top of the RF push rod. The bottom end of the RF push rod is fixedly connected to the corresponding RF reed. The RF upper magnet and the RF lower magnet have opposite magnetic properties. When the coil is energized, the magnetic properties of the RF upper magnet and the RF lower magnet are the same.

[0007] The load driver includes a metal tube, a coil wound around the metal tube, a load upper magnet embedded in the metal tube, a load push rod and a load lower magnet arranged at the top of the load push rod. The bottom end of the load push rod is fixedly connected to the corresponding load spring. The magnetic properties of the load upper magnet and the load lower magnet are the same. After the coil is energized, the magnetic properties of the load upper magnet are opposite to those of the load lower magnet.

[0008] Optionally, it also includes a driving fixed seat and a push rod guide seat arranged under the driving fixed seat, the metal tube and the coil are fixed on the driving fixed seat, as the RF lower magnet and the RF upper magnet attract or repel each other, the RF push rod moves up and down in the driving fixed seat along the push rod guide seat, as the load lower magnet and the load upper magnet attract or repel each other, the load push rod moves up and down in the driving fixed seat along the push rod guide seat.

[0009] Optionally, the metal tube includes a tubular column and a accommodating cavity extending from the tubular body and inserted into the drive fixing seat, the coil is wound around the outside of the tubular column, the RF upper magnet or the load upper magnet is embedded in the tubular column, and the accommodating cavity provides movement space for the RF push rod or the load push rod.

[0010] Optionally, the RF push rod and the load push rod have the same structure, including a rod portion passing through the push rod guide seat, a limit platform arranged on the rod portion and above the push rod guide seat, and a push rod head located at the top for accommodating the RF lower magnet or the load lower magnet.

[0011] Optionally, the common port is located at the center, one end of the RF reed is located at the center, and the other end is evenly distributed on a circumference with the center as the center, and the load reed and the corresponding RF reed have an angle of 90-120°.

[0012] Optionally, the RF drive is evenly distributed around the inner circle, and the load drive is evenly distributed around the outer circle.

[0013] The technical solution provided by the utility model utilizes the attraction (repulsion) force of the magnet to drive the spring. With the help of the installed upper and lower magnets, the load end can be normally connected without electricity. After power is applied, the magnetism changes, and the terminal is turned on and the load end is opened under the action of the attraction and repulsion of the magnet. The operation is more stable and the control is simpler. The windmill-shaped setting of the structure can improve the structural integration and reduce the size of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is an exploded view of a specific embodiment of the miniature single-pole multi-throw radio frequency switch of the utility model;

[0015] Figure 2 This is a schematic diagram of a specific embodiment of the arrangement of the radio frequency reed and the load reed of the utility model;

[0016] Figure 3This is a schematic diagram of a specific embodiment of the radio frequency drive and load drive arrangement of the present invention;

[0017] Figure 4 This is a working diagram of the radio frequency drive or load drive described in the present invention;

[0018] Figure 5 It is a structural schematic diagram of a specific implementation of the radio frequency push rod described in the utility model. DETAILED DESCRIPTION

[0019] For ease of understanding, the miniature single-pole multi-throw 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.

[0020] 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.

[0021] 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.

[0022] This embodiment is described by taking a single-pole six-throw RF switch with load as an example. The specific number of RF ports can be adjusted as needed.

[0023] like Figure 1 As shown, the miniature single-pole multi-throw RF switch includes a common port 11, six RF ports 12, six load ports 13, six corresponding RF reeds 21, six corresponding load reeds 22, a base 30 for setting the ports and reeds, six RF drivers 41 for driving the RF reeds 21, six load drivers 42 for driving the load reeds, a driver fixing base 50, a push rod guide base 60 arranged under the driver fixing base 50 and fixedly connected thereto by a nut, and a control system 70 electrically connecting the RF driver 41 and the load driver 42.

[0024] Continue to see Figure 1 and Figure 2 The common port 11 is located at the center, one end of the RF reed 21 is located at the central common port 11, and the other end is evenly distributed on the circumference with the center as the center, that is, the corresponding RF port 12, and the load reed 22 and the corresponding RF reed 21 have an angle of approximately 90°, that is, one end of the load reed 22 is located at the corresponding RF port 12, and the other end is located at the load port 13 of the same group.

[0025] like Figure 3 As shown, the RF drivers 41 are evenly distributed around the inner circle, the load drivers 42 are evenly distributed around the outer circle, and the RF drivers 41 and the load drivers 42 are staggered.

[0026] Continue to see Figure 1 and Figure 4 As shown, the RF driver 41 includes a metal tube 411, a coil 412 wound around the metal tube 411, an RF upper magnet 413 embedded in the metal tube 412, an RF push rod 414, and an RF lower magnet 415 provided at the top of the RF push rod 414. The bottom end of the RF push rod 414 is fixed to the corresponding RF reed 21 by hot melt adhesive. The magnetic properties of the RF upper magnet 413 and the RF lower magnet 415 are opposite. When the coil is energized, the magnetic properties of the RF upper magnet 413 are the same as those of the RF lower magnet 415.

[0027] Continue to see Figure 4 The metal tube 411 includes a tubular column 4111 and a receiving cavity 4112 extending from the tubular body 4111 and inserted into the driving fixed seat. The coil 412 is wound around the outside of the tubular column 4111, and the RF upper magnet 413 is embedded in the tubular column 4111. The receiving cavity 4112 provides movement space for the RF push rod 414.

[0028] The load driver 41 and the RF driver 42 are essentially identical in composition, differing in that the magnets on the upper and lower loads are identical. However, when the coil is energized, the magnetism of the upper load magnet is opposite to that of the lower load magnet. This is because the two have opposite requirements for conduction or disconnection during power-on and power-off.

[0029] Continue to see Figure 4 and Figure 5 The RF push rod 414 has the same structure as the load push rod, including a rod portion 4141 passing through the push rod guide seat 60, a limit platform 4142 arranged on the rod portion 4141 and located above the push rod guide seat 60, and a push rod head 4143 located at the top for accommodating the lower magnet.

[0030] Working principle and process

[0031] Continue to see Figure 4The metal tube 411 and the coil 412 are fixed on the driving fixing base 50. When no power is applied, the RF lower magnet and the RF upper magnet attract each other due to their opposite magnetic properties, so the RF push rod drives the corresponding RF reed to move upward. At this time, all RF ports and the common port are disconnected; and the load lower magnet and the load upper magnet repel each other due to their opposite magnetic properties, so the load push rod pushes the corresponding load reed to move downward. At this time, all load ports and the RF port are connected;

[0032] When the control system energizes an RF drive and a corresponding load drive, the magnetism of the RF upper magnet and the load upper magnet are reversed. Therefore, the RF push rod pushes the RF reed downward due to repulsion, and the RF port and the common port are connected, while the load push rod drives the corresponding load reed upward due to attraction, and the load port and the RF port are disconnected.

[0033] 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 miniature single-pole multi-throw radio frequency switch, characterized in that: It includes a common port, multiple radio frequency ports, load ports corresponding to the radio frequency ports one by one, a radio frequency reed connecting the common port and a radio frequency port, a load reed connecting a radio frequency port and a corresponding load port, a radio frequency driver driving the radio frequency reed, a load driver driving the load reed, and a control system electrically connecting the radio frequency driver and the load driver; The RF driver includes a metal tube, a coil wound around the metal tube, an RF upper magnet embedded in the metal tube, an RF push rod, and an RF lower magnet arranged at the top of the RF push rod. The bottom end of the RF push rod is fixedly connected to the corresponding RF reed. The RF upper magnet and the RF lower magnet have opposite magnetic properties. When the coil is energized, the magnetic properties of the RF upper magnet and the RF lower magnet are the same. The load driver includes a metal tube, a coil wound around the metal tube, a load upper magnet embedded in the metal tube, a load push rod, and a load lower magnet arranged at the top of the load push rod. The bottom end of the load push rod is fixedly connected to the corresponding load spring. The magnetic properties of the load upper magnet and the load lower magnet are the same. After the coil is energized, the magnetic properties of the RF upper magnet are opposite to those of the RF lower magnet.

2. The miniature single-pole multi-throw radio frequency switch according to claim 1, characterized in that: It also includes a driving fixed seat and a push rod guide seat arranged under the driving fixed seat. The metal tube and the coil are fixed on the driving fixed seat. As the RF lower magnet and the RF upper magnet attract or repel each other, the RF push rod moves up and down in the driving fixed seat along the push rod guide seat. As the load lower magnet and the load upper magnet attract or repel each other, the load push rod moves up and down in the driving fixed seat along the push rod guide seat.

3. The miniature single-pole multi-throw radio frequency switch according to claim 2, characterized in that: The metal tube includes a tubular column and a receiving cavity extending from the tubular body and inserted into the drive fixing seat. The coil is wound around the outside of the tubular column, and the RF upper magnet or the load upper magnet is embedded in the tubular column. The receiving cavity provides movement space for the RF push rod or the load push rod.

4. The miniature single-pole multi-throw radio frequency switch according to claim 2, characterized in that: The RF push rod and the load push rod have the same structure, including a rod portion passing through the push rod guide seat, a limit platform arranged on the rod portion and above the push rod guide seat, and a push rod head located at the top for accommodating the RF lower magnet or the load lower magnet.

5. The miniature single-pole multi-throw radio frequency switch according to claim 1, characterized in that: The common port is located in the center, one end of the radio frequency reed is located in the center, and the other end is evenly distributed on the circumference with the center as the center, and the load reed and the corresponding radio frequency reed have an angle of 90-120 degrees.

6. The miniature single-pole multi-throw radio frequency switch according to claim 1, characterized in that: The RF drive is evenly distributed around the inner circle, and the load drive is evenly distributed around the outer circle.

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