Apparatus and method for tuning RF filter by using single motor

Abstract

The present invention relates to an apparatus and a method for tuning an RF filter by using a single motor, which include a tuning screw driver for tightening a tuning screw and a nut driver for tightening a nut, in an RF filter, to control the screw and the nut with a single motor, and control the tuning screw driver and the nut driver of the RF filter with a time difference, and thus can reduce production costs. The apparatus for tuning an RF filter by using a single motor of the present invention includes: the single motor; a main gear fixed to an end of the single motor; a screw gear provided to be engaged with the main gear; a screw driver provided at the lower center of the screw gear to rotate; a nut gear provided to be engaged with the main gear; and a nut driver provided at the lower center of the nut gear to rotate.

Description

RF filter tuning device and method using a single motor

[0001] The present invention relates to a device and method for tuning an RF filter using a single motor, and more particularly, to a device for controlling a screw and a nut, including a tuning screw driver for tightening a tuning screw of an RF filter and a nut driver for tightening a nut.

[0002] In addition, the present invention relates to an RF filter tuning device and method using a single motor that can control a tuning screw driver and a nut driver of an RF filter using a single motor.

[0003] RF filters, which are one of the core components of wireless communication systems, have the function of passing only the desired frequency band among the various input frequency components and attenuating the remaining frequency signals. A wide variety of types and shapes have been developed.

[0004] The bandpass frequency of an RF filter is determined by the inductance and capacitance components of the filter, and the process of adjusting the bandpass frequency of the filter is called tuning.

[0005] RF filters are produced by hand by skilled workers using tuning screws to compensate for structural features (such as machining and assembly tolerances).

[0006] However, these manual processes require considerable skill, and the production volume varies greatly depending on individual ability and availability of manpower, leading to a loss of cost competitiveness due to rising labor costs.

[0007] Furthermore, the varying quality of each product was a major problem with the manual production process. Research into automated tuning devices has been ongoing to automate this labor-intensive production process.

[0008] As an example, Korean Patent Publication No. 10-2017-0040642 discloses an RF filter tuning system that automates all processes related to the tuning process required for characteristic adjustment in the production of an RF filter, and a filter manufacturing method using the system.

[0009] However, in this case, there is a disadvantage in that the motors controlling the screw driver and nut driver must be provided independently.

[0010] The purpose of the present invention is to provide an RF filter tuning device and method using a single motor that controls a screw and a nut, including a tuning screw driver for tightening a tuning screw of an RF filter and a nut driver for tightening a nut.

[0011] Another object of the present invention is to provide an RF filter tuning device and method using a single motor that can reduce production costs by controlling a tuning screw driver and a nut driver of an RF filter with a time difference.

[0012] An RF filter tuning device using a single motor according to the present invention may include a single motor, a main gear fixed to an end of the single motor, a screw gear provided to be engaged with the main gear, a screw driver provided at the center bottom of the screw gear and configured to rotate, a nut gear provided to be engaged with the main gear, and a nut driver provided at the center bottom of the nut gear and configured to rotate.

[0013] Here, the main gear may be in neutral or may mesh with either the screw gear or the nut gear.

[0014] Additionally, a spring can be added to the top of the screw gear.

[0015] Here, a single motor, screw gear, and nut gear can be provided to enable up and down movement.

[0016] Additionally, the RF filter can be secured by lowering the screw driver and nut driver to secure the screw driver to the screw and the nut driver to the nut.

[0017] Here, the screw can be turned only with the nut driver while the screw is stationary to loosen the nut from the cover of the RF filter, thereby preparing for tuning of the RF filter.

[0018] Additionally, the RF filter can be tuned by controlling the up and down movement of the screw by rotating the screw while the nut is loosened.

[0019] Here, tuning of the RF filter can be completed by stopping the screw and only rotating the nut driver to secure the nut to the cover of the RF filter.

[0020] Additionally, once tuning of the RF filter is complete, the screw driver and nut driver can be raised to separate the screw driver and nut driver from the screw and nut, respectively, thereby separating them from the RF filter.

[0021] According to another embodiment of the present invention, a method for tuning an RF filter using a single motor may include an RF filter fixing step of lowering a screw driver and a nut driver to fix the screw driver to the screw and fixing the nut driver to the nut to fix the RF filter, an RF filter tuning preparation step of preparing tuning of the RF filter by rotating only the nut driver while the screw is stopped to loosen the nut from the cover of the RF filter, an RF filter tuning step of controlling the up and down movement of the screw by rotating the screw while the nut is relaxed to tune the RF filter, an RF filter tuning termination step of ending tuning of the RF filter by rotating only the nut driver while the screw is stopped to secure the nut to the cover of the RF filter, and an RF filter separation step of raising the screw driver and the nut driver to separate the screw driver and the nut driver from the screw and the nut, respectively, when tuning of the RF filter is ended.

[0022] Here, the screw driver is provided at the lower center of a screw gear that is provided to be able to mesh with a main gear fixed to the end of a single motor and rotate, and the nut driver is provided at the lower center of a nut gear that is provided to be able to mesh with a main gear and rotate.

[0023] The RF filter tuning device and method using a single motor according to the present invention has the advantage of controlling the screw and nut with a single motor, including a tuning screw driver for tightening the tuning screw of the RF filter and a nut driver for tightening the nut.

[0024] In addition, the RF filter tuning device and method using a single motor according to the present invention has the advantage of reducing the production cost by controlling the tuning screw driver and nut driver of the RF filter with a time difference.

[0025] FIG. 1 is a drawing showing an RF filter tuning device using a single motor according to one embodiment of the present invention.

[0026] FIG. 2 is a drawing showing how the screw driver and nut driver of FIG. 1 control the screw and nut, FIG. 2(a) shows the initial state in which the screw driver and the nut driver are separated from the screw and the nut, respectively, and the RF filter is separated, FIG. 2(b) shows the screw driver and the nut driver being lowered so that the screw driver is fixed to the screw via a spring and the nut driver is fixed to the nut to fix the RF filter, and FIG. 2(c) shows the state in which the screw is stopped and only the nut driver is rotated to loosen the nut from the cover of the RF filter, thereby preparing for tuning the RF filter.

[0027] FIG. 3 is another drawing showing how the screw driver and nut driver of FIG. 1 control the screw and nut, FIG. 3(a) shows tuning the RF filter by controlling the up and down movement of the screw by rotating the screw driver in a loosened state, FIG. 3(b) shows finishing tuning the RF filter by fixing the nut to the cover of the RF filter by rotating only the nut driver in a stopped state, and FIG. 3(c) shows separating the screw driver and nut driver from the screw and nut, respectively, by raising the screw driver and nut driver, thereby separating them from the RF filter.

[0028] FIG. 4 is a flowchart illustrating a method for tuning an RF filter using a single motor according to one embodiment of the present invention.

[0029] Hereinafter, specific embodiments for carrying out the present invention will be described with reference to the attached drawings.

[0030] When describing the present invention, terms such as "first" and "second" may be used to describe various components. However, the components may not be limited by these terms. The terms are used solely to distinguish one component from another. For example, without departing from the scope of the present invention, the first component could be referred to as the "second component," and similarly, the second component could also be referred to as the "first component."

[0031] When it is said that a component is connected or connected to another component, it can be understood that it may be directly connected or connected to that other component, but there may also be other components in between.

[0032] The terminology used in this specification is for the purpose of describing specific embodiments only and is not intended to limit the present invention. Singular expressions may include plural expressions unless the context clearly dictates otherwise.

[0033] In this specification, terms such as “include” or “have” are intended to indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, and can be understood as not excluding in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0034] Additionally, the shape and size of elements in the drawing may be exaggerated for clearer explanation.

[0035] Hereinafter, with reference to the attached drawings, a detailed description will be given of an RF filter tuning device and method using a single motor according to the present invention.

[0036] FIG. 1 is a drawing showing an RF filter tuning device using a single motor according to one embodiment of the present invention, and FIGS. 2 and 3 are detailed drawings for explaining FIG. 1 in detail.

[0037] Hereinafter, an RF filter tuning device using a single motor according to one embodiment of the present invention will be described with reference to FIGS. 1 to 3.

[0038] First, referring to FIG. 1, an RF filter tuning device using a single motor according to one embodiment of the present invention comprises a single motor (100), a main gear (110) fixed to the end of the single motor (100), a screw gear (220) provided to be engaged with the main gear (110), a screw driver (200) provided at the center lower end of the screw gear (220) and configured to rotate, a nut gear (310) provided to be engaged with the main gear (110), and a nut driver (300) provided at the center lower end of the nut gear (310) and configured to rotate.

[0039] Here, the single motor (100) can transmit torque to the screw driver (200) by engaging the main gear (110) provided at the end of the single motor (100) with the screw gear (220) provided at the upper end of the central axis of the screw driver (200), and the main gear (110) can transmit torque to the nut driver (300) by engaging the nut gear (310) provided at the upper end of the central axis of the nut driver (300). In addition, the main gear (110) may be in a neutral state that is not engaged with the screw gear (220) and the nut gear (310).

[0040] In the present invention, a single motor (100), a screw gear (220), and a nut gear (310) are provided to be able to move up and down. At this time, a spring (210) is further provided on the upper end of the screw gear (220), so that the screw driver (200) and the screw gear (220) fixed to the upper end of the screw driver (200) can limit the up and down movement of the screw driver (200) by the spring (210), which will be described in detail in FIGS. 2 and 3.

[0041]

[0042] FIG. 2 is a drawing showing that the screw driver (200) and the nut driver (300) of FIG. 1 control the screw (600) and the nut (400), FIG. 2(a) shows the initial state in which the screw driver (200) and the nut driver (300) are separated from the screw (600) and the nut (400), respectively, and the RF filter is separated, FIG. 2(b) shows that the screw driver (200) and the nut driver (300) are lowered so that the screw driver (200) is fixed to the screw (600) via a spring (210) and the nut driver (300) is fixed to the nut (400) to fix the RF filter, and FIG. 2(c) shows that the screw (600) is stopped and only the nut driver (300) is rotated to release the nut (400) from the cover (500) of the RF filter, thereby preparing for tuning the RF filter.

[0043] As can be seen in Fig. 2(a), the RF filter tuning device using a single motor according to the present invention initially maintains an initial state in which the screw driver (200) and the nut driver (300) are separated from the screw (600) and the nut (400), respectively, and the RF filter is separated.

[0044] When the screw driver (200) and the nut driver (300) are concentric with the nut (400) and the cover (500) of the RF filter, as can be seen in Fig. 2(b), the screw driver (200) and the nut driver (300) are lowered to fix the screw driver (200) to the screw (600) and the nut driver (300) to the nut (400) to fix the RF filter, and at this time, the main gear (110) is maintained in a neutral state.

[0045] Meanwhile, since the grooves of the screw driver (200) and the screw (600) do not match, a process of slowly turning the screw driver (200) to align it with the screw (600) may be required. At this time, damage due to contact may occur during the alignment process, so a spring (210) is used to keep the downward torque of the screw (600) to a minimum, and at this time, the main gear (110) is temporarily engaged with the screw gear (220).

[0046]

[0047] In addition, since the grooves of the nut driver (300) and the nut (400) may not match each other, a process of slowly turning the nut driver (300) to align it with the nut (400) may be required. During this alignment process, damage due to contact may occur, so it is necessary to keep the downward torque of the nut (400) to a minimum, and at this time, the main gear (110) temporarily engages with the nut gear (310).

[0048] Meanwhile, in order to rotate the screw (600), the nut (400) must be loosened from the cover (500) of the RF filter. As can be seen in FIG. 2(c), the screw (600) is stationary, and only the nut driver (300) is rotated to loosen the nut (400) from the cover (500) of the RF filter, thereby preparing for tuning of the RF filter. At this time, the main gear (110) is engaged with the nut gear (310).

[0049] In addition, since the screw (600) should not rotate together when the nut (400) rotates, the screw (600) is always kept fixed so that the nut (400) can rotate.

[0050] That is, when the main gear (110) does not mesh with the screw gear (220), the screw gear (220) may be provided to be in a locked state.

[0051]

[0052] FIG. 3 is another drawing showing how the screw driver and nut driver of FIG. 1 control the screw and nut, FIG. 3(a) shows tuning the RF filter by controlling the up and down movement of the screw by rotating the screw driver in a loosened state, FIG. 3(b) shows finishing tuning the RF filter by fixing the nut to the cover of the RF filter by rotating only the nut driver in a stopped state, and FIG. 3(c) shows separating the screw driver and nut driver from the screw and nut, respectively, by raising the screw driver and nut driver, thereby separating them from the RF filter.

[0053] Here, when the nut (400) is loosened and the rotation of the screw (600) becomes free, as can be seen in Fig. 3(a), the RF filter is tuned by controlling the up and down movement of the screw (600) by rotating the screw (600) while the nut (400) is loosened, and at this time, the main gear (110) is engaged with the screw gear (220).

[0054] Meanwhile, since the screw (600) moves up and down by rotation, the screw driver (200) is provided with a spring (210) at the top of the screw driver (200) so that the screw driver (200) can move up and down together with the screw (600) while rotating.

[0055] When tuning of the RF filter is completed, as can be seen in Fig. 3(b), the screw (600) is stopped and only the nut driver (300) is rotated to fix the nut (400) to the cover (500) of the RF filter, thereby completing tuning of the RF filter. At this time, the main gear (110) is engaged with the nut gear (310).

[0056] At this time, if the screw (600) rotates together, the characteristics of the RF filter change, so caution is required.

[0057] Meanwhile, when the nut (400) is fixed to the cover (500) of the RF filter and the screw (600) is fixed together, as can be seen in Fig. 3(c), the screw driver (200) and the nut driver (300) are raised to separate the screw driver (200) and the nut driver (300) from the screw (600) and the nut (400), respectively, thereby separating the RF filter.

[0058]

[0059] FIG. 4 is a flowchart illustrating a method for tuning an RF filter using a single motor according to one embodiment of the present invention.

[0060] As can be seen in FIG. 4, the RF filter tuning method using a single motor includes an RF filter fixing step (S100) in which the screw driver (200) and the nut driver (300) are lowered to fix the screw driver (200) to the screw (600) and the nut driver (300) to the nut (400) to fix the RF filter, an RF filter tuning preparation step (S200) in which the screw (600) is stopped and only the nut driver (300) is rotated to loosen the nut (400) from the cover (500) of the RF filter to prepare for tuning the RF filter, an RF filter tuning step (S300) in which the screw (600) is rotated in a relaxed state and the up-and-down movement of the screw (600) is controlled to tune the RF filter, and a RF filter tuning step (S300) in which the screw (600) is stopped and only the nut driver (300) is rotated to fix the nut (400) to the cover (500) of the RF filter to tune the RF filter. It consists of an RF filter tuning termination step (S400) that ends, and an RF filter separation step (S500) that separates the screw driver (200) and the nut driver (300) from the screw (600) and the nut (400) by raising the screw driver (200) and the nut driver (300) when the tuning of the RF filter is completed, thereby separating them from the RF filter.

[0061] At this time, the RF filter tuning device used in the RF filter tuning method using a single motor of the present invention is composed of a single motor (100), a main gear (110) fixed to the end of the single motor (100), a screw gear (220) provided to be engaged with the main gear (110), a screw driver (200) provided at the center lower end of the screw gear (220) and rotating, a nut gear (310) provided to be engaged with the main gear (110), and a nut driver (300) provided at the center lower end of the nut gear (310) and rotating, which have been described in FIG. 1, and thus a detailed description thereof will be omitted.

[0062] Here, the screw driver (200) is provided at the lower center of a screw gear (220) that is provided to be engaged with a main gear (100) fixed to the end of a single motor (100) and rotates, and the nut driver (300) is provided at the lower center of a nut gear (310) that is provided to be engaged with a main gear (100) and rotates.

[0063] Here, the single motor (100) can transmit torque to the screw driver (200) by engaging the main gear (110) provided at the end of the single motor (100) with the screw gear (220) provided at the upper end of the central axis of the screw driver (200), and the main gear (110) can transmit torque to the nut driver (300) by engaging the nut gear (310) provided at the upper end of the central axis of the nut driver (300). In addition, the main gear (110) may be in a neutral state that is not engaged with the screw gear (220) and the nut gear (310).

[0064] The RF filter tuning method using a single motor according to the present invention is such that, as can be seen in FIG. 2(a), when the screw driver (200) and the nut driver (300) are concentric with the nut (400) and the cover (500) of the RF filter, the screw driver (200) and the nut driver (300) are initially separated from the screw (600) and the nut (400), respectively, so that the RF filter maintains the initial state of separation. Thereafter, as can be seen in FIG. 2(b) which shows the RF filter fixing step (S100), the screw driver (200) and the nut driver (300) are lowered to fix the screw driver (200) to the screw (600) and the nut driver (300) to the nut (400), thereby fixing the RF filter. At this time, the main gear (110) is maintained in a neutral state.

[0065] Meanwhile, in order to rotate the screw (600), the nut (400) must be loosened from the cover (500) of the RF filter. As can be seen in the above-described Fig. 2(c) showing the RF filter tuning preparation step (S200), the screw (600) is stopped, and only the nut driver (300) is rotated to loosen the nut (400) from the cover (500) of the RF filter, thereby preparing for tuning of the RF filter. At this time, the main gear (110) is engaged with the nut gear (310). Since this has been described in Fig. 2, a detailed description thereof will be omitted.

[0066] In addition, when the nut (400) is loosened and the rotation of the screw (600) becomes free, as can be seen in the above drawing 3(a) showing the RF filter tuning step (S300), the screw (600) is rotated with the nut (400) loosened to control the up and down movement of the screw (600) to tune the RF filter, and at this time, the main gear (110) is engaged with the screw gear (220).

[0067] When tuning of the RF filter is completed, as can be seen in the above drawing 3(b) which shows the RF filter tuning completion step (S400), the tuning of the RF filter is completed by fixing the nut (400) to the cover (500) of the RF filter by rotating only the nut driver (300) while stopping the screw (600), and at this time, the main gear (110) is engaged with the nut gear (310).

[0068] Meanwhile, as can be seen in the above-described Fig. 3(c) showing the RF filter separation step (S500), when the nut (400) is fixed to the cover (500) of the RF filter and the screw (600) is fixed together, the screw driver (200) and the nut driver (300) are raised to separate the screw driver (200) and the nut driver (300) from the screw (600) and the nut (400), respectively, thereby separating them from the RF filter. Since this has been described in Fig. 3, a detailed description thereof will be omitted.

[0069]

[0070] As described above, the RF filter tuning device and method using a single motor according to the present invention has the advantage of controlling the screw and nut with a single motor, including a tuning screw driver for tightening the tuning screw of the RF filter and a nut driver for tightening the nut, and also has the advantage of reducing the production cost by controlling the tuning screw driver and nut driver of the RF filter with a time difference.

[0071]

[0072] Those skilled in the art will appreciate that the various illustrative logical blocks, modules, processors, means, circuits, and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, various forms of programs or design code (referred to herein, for convenience, as software), or a combination of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Those skilled in the art may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

[0073] The various embodiments presented herein can be implemented as a method, apparatus, or article of manufacture using standard programming and / or engineering techniques. The term article of manufacture includes a computer program, carrier, or media accessible from any computer-readable storage device. For example, computer-readable storage media include, but are not limited to, magnetic storage devices (e.g., hard disks, floppy disks, magnetic strips, etc.), optical disks (e.g., CDs, DVDs, etc.), smart cards, and flash memory devices (e.g., EEPROMs, cards, sticks, key drives, etc.). Furthermore, various storage media presented herein include one or more devices and / or other machine-readable media for storing information.

[0074] It should be understood that the specific order or hierarchy of steps in the presented processes is merely an example of exemplary approaches. It should be understood that the specific order or hierarchy of steps in the processes may be rearranged within the scope of the present invention based on design priorities. The appended method claims provide elements of various steps in a sample order, but are not intended to be limited to the specific order or hierarchy presented.

[0075] The description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments without departing from the scope of the present invention. Therefore, the present invention is not intended to be limited to the embodiments disclosed herein, but is to be construed in the broadest scope consistent with the principles and novel features disclosed herein.

[0076] The present invention relates to an RF filter tuning device and method using a single motor, and can be used in an RF filter tuning device.

Claims

1. Single motor; A main gear fixed to the end of the above single motor; A screw gear provided to mesh with the above main gear; A rotating screw driver provided at the center bottom of the above screw gear; A nut gear provided to mesh with the above main gear; An RF filter tuning device using a single motor including a nut driver that is installed at the center bottom of the above nut gear and rotates.

2. In paragraph 1, A RF filter tuning device using a single motor, characterized in that the above-mentioned main gear is in a neutral state or is engaged with either the screw gear or the nut gear.

3. In paragraph 1, An RF filter tuning device using a single motor, characterized in that a spring is further provided on the upper end of the screw gear.

4. In paragraph 1, An RF filter tuning device using a single motor, characterized in that the single motor, the screw gear, and the nut gear are provided to be able to move up and down.

5. In paragraph 4, A RF filter tuning device using a single motor, characterized in that the screw driver and the nut driver are lowered to fix the screw driver to the screw and the nut driver to the nut to fix the RF filter.

6. In paragraph 5, A single motor-based RF filter tuning device characterized in that the screw is rotated only by the nut driver while stationary to loosen the nut from the cover of the RF filter, thereby preparing for tuning of the RF filter.

7. In paragraph 6, An RF filter tuning device using a single motor, characterized in that the RF filter is tuned by controlling the up-and-down movement of the screw by rotating the screw while the nut is relaxed.

8. In paragraph 7, A RF filter tuning device using a single motor, characterized in that tuning of the RF filter is completed by fixing the nut to the cover of the RF filter by rotating only the nut driver while the screw is stopped.

9. In paragraph 8, Once the tuning of the above RF filter is completed, A RF filter tuning device using a single motor, characterized in that the screw driver and the nut driver are raised to separate the screw driver and the nut driver from the screw and the nut, respectively, and are separated from the RF filter.

10. RF filter fixing step of fixing the RF filter by lowering the screw driver and the nut driver to fix the screw driver to the screw and the nut driver to the nut; An RF filter tuning preparation step in which the above screw is rotated only with the nut driver in a stationary state to loosen the nut from the cover of the RF filter, thereby preparing for tuning of the RF filter; An RF filter tuning step for tuning the RF filter by rotating the screw while the nut is relaxed and controlling the up and down movement of the screw; An RF filter tuning termination step in which tuning of the RF filter is terminated by rotating only the nut driver while stopping the screw to secure the nut to the cover of the RF filter; A method for tuning an RF filter using a single motor, comprising: an RF filter separation step of separating the RF filter by lifting the screw driver and the nut driver to separate the screw driver and the nut driver from the screw and the nut, respectively, when tuning of the RF filter is completed; 11. In paragraph 10, A method for tuning an RF filter using a single motor, characterized in that the screw driver is provided at the lower center of a screw gear that is provided to be engaged with a main gear fixed to the end of a single motor and rotates, and the nut driver is provided at the lower center of a nut gear that is provided to be engaged with the main gear and rotates.

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