WO2019232728A1 - Signal filter apparatus and signal transceiver device - Google Patents

Abstract

The present application provides a signal filter apparatus and a signal transceiver device. The signal filter apparatus comprises: a cavity comprising at least one slot; a connector used for transmitting a signal; and a filter element with one end connected to the connector, wherein the part of the connector connected to the filter element and the filter element are provided in the slot. Compared with the prior art, the present application provides a signal filter apparatus and a signal transceiver device, the part of the connector connected to the filter element and the filter element are provided in the slot of the cavity, so as to reduce the space occupied by the filter element. The present application can reduce the volume of the signal filter apparatus and increase the space utilization of the signal filter apparatus.

Description

Signal filtering device and signal transmitting and receiving equipment Ranch

[Technical Field]

The present application relates to the field of communications, and in particular, to a signal filtering device and a signal transceiving device.

 【Background technique】

In recent years, with the increase in consumer demand and the rapid development of modern wireless communication systems, the radio frequency spectrum resources have become increasingly tight. The increasingly complex communication environment and increasingly tight radio frequency spectrum resources have made the requirements for signal filtering devices in the field of radio communication increasingly high. Now, the user's requirements for the signal filtering device are: while the signal filtering device is as small as possible, the signal filtering device can still meet the requirements of lower in-band insertion loss, higher out-of-band suppression, larger power capacity, and smaller size. And lower costs.

In the prior art, in order to make the signal filtering device have higher performance, a commonly adopted method is to place a filtering element of the signal filtering device and a connector separately, and the connector and the filtering element are connected through a tap piece. Because the resonant cavity in which the filter element is located needs a larger volume to meet the requirements of lower in-band insertion loss, higher out-of-band rejection, and greater power capacity required by the user. This brings a problem: the space occupied by the signal filtering device increases, and the purpose of smaller volume cannot be achieved. If you want to meet the above requirements, you need to use higher-priced and better-performance devices, which will increase costs and outweigh the benefits. It is necessary to consider reducing the size of the signal filtering device and increasing the space utilization rate of the signal filtering device without increasing costs and meeting user requirements.

 [Summary of the Invention]

The technical problem mainly solved by this application is to provide a signal filtering device and a signal transmitting and receiving device, which can reduce the volume of the signal filtering device and increase the space utilization rate of the signal filtering device.

In order to solve the technical problem, the present application proposes a signal filtering device. The signal filtering device includes a cavity, the cavity includes at least one through slot, a connector for transmitting a signal, and a filtering element, one end of the filtering element and The connector is connected; wherein a portion of the connector connected to the filter element and the filter element are both disposed in the through slot.

In order to solve the above technical problem, the present application further provides a signal transmitting and receiving device. The signal transmitting and receiving device includes a signal filtering device and an antenna. The antenna is connected to an input / output terminal of the signal filtering device. The signal filtering device includes: A cavity, the cavity including at least one through slot;

A connector for transmitting a signal; a filter element, one end of which is connected to the connector; wherein a portion of the connector connected to the filter element and the filter element are provided in the through slot in.

The beneficial effect of the present application is: different from the situation of the prior art, the present application proposes a signal filtering device, in which the part connecting the connector with the filtering element and the filtering element are arranged in the through slot of the cavity, reducing the number of filtering elements. Occupying space, this application can save costs and improve the space utilization of the signal filtering device.

 [Brief Description of the Drawings]

1 is a schematic structural diagram of an embodiment of a signal filtering device according to the present application;

2 is a schematic diagram of a specific structure of an embodiment of the signal filtering device of FIG. 1;

FIG. 3 is a schematic structural diagram of an embodiment of a signal transmitting and receiving device of the present application.

【Detailed ways】

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

For a signal filtering device, the larger the space of the resonant cavity in which the filtering element is located, the better the performance of the signal filtering device, and therefore the easier it is to realize the functions required by the user. In the prior art, the filtering element is often placed separately from the connector. Due to the volume limitation of the signal filtering device, the diameter of the resonant cavity where the filtering element is located cannot be maximized, which further affects the performance of the signal filtering device. In this application, placing the connector and the filter element and the filter element in the resonant cavity can effectively improve the space utilization rate of the signal filtering device, can further increase the diameter of the resonant cavity, and further improve the performance of the signal filtering device.

Please refer to FIG. 1. FIG. 1 is a schematic structural diagram of an embodiment of a signal filtering device of the present application. The signal filtering device of the present application is described with reference to FIG. 1.

In this embodiment, the signal filtering device includes a connector 101, a filtering element 102, and a cavity 103.

The connector 101 is used for transmitting signals. The filtering element 102 is used for filtering the signal transmitted by the connector 101, and one end of the filtering element 102 is connected to the connector 101. The cavity 103 is provided with at least one through slot (not labeled). The portion where the connector 101 is connected to the filter element 102 and the filter element 102 are both disposed in the through slot. The signal filtering device further includes a cover plate (not shown). The cover plate covers the cavity 103 to form a resonant cavity. At least one through hole is provided on the cover plate at a position corresponding to the connector 101, and a part of the connector 101 passes through the through hole. Hole setting. In one embodiment, the through groove is disposed perpendicularly to the cover plate that covers the cavity 103.

Please refer to FIG. 2, which is a schematic diagram of a specific structure of an embodiment of the signal filtering device of FIG. 1, and the signal filtering device of the present application will be described in detail with reference to FIGS. 1 and 2.

In this embodiment, the signal filtering device includes a connector 101, a filtering element 102, a cavity 103, a first support base 105, a second support base 106, and a tap piece 107.

The connector 101 includes a main body portion 1011 and a connection portion 1012. The main body portion 1011 is connected to the connection portion 1012 and may be an integrated structure. The connector 101 is used for transmitting signals to the filtering element 102 or transmitting signals transmitted by the filtering element 102 to other devices connected to the connector 101.

In this example, the radial cross-sectional diameter of the main body portion 1011 is larger than the radial cross-sectional diameter of the connecting portion 1012. In other embodiments, the radial cross-sectional diameter of the connecting portion 1012 of the connector may also be greater than or equal to the radial cross-sectional diameter of the main body portion 1011. The connector 101 may also be a wire, a coil, a circuit board, or other signal transmission devices, as long as the connector 101 can be used to transmit signals, which is not limited herein.

One end of the filter element 102 is connected to an end of the connection portion 1012 on the connector 101 away from the main body portion 1011. The filtering element 102 obtains a signal transmitted by the connector 101 through the connection part 1012 or transmits the signal after the filtering process to the connector 101.

In this embodiment, the filtering element 102 and the connecting portion 1012 are directly and electrically connected to transmit signals. In other embodiments, the filtering element 102 and the connecting portion 1012 may be connected or coupled to transmit signals through wires, which is not limited herein.

A cavity 104 is formed in the cavity 103. A portion of the connector 101 that is connected to the filter element 102 and the filter element 102 are located in the through slot 104, and the connector 101 is at least partially coaxially disposed with the filter element 102.

In this embodiment, the connection portion 1012 and the filter element 102 of the connector 101 are located in the through slot 104, and the main body portion 1011 and the connection portion 1012 in the connector 101 are coaxially disposed with the filter element 102. In other embodiments, the connectors 101 may be all located in the through slot 104. The connector 101 is not coaxially disposed with the filter element 102, as long as the connector 101 can transmit signals, it is not limited herein.

In this embodiment, the through groove 104 is a cylindrical through groove, and a diameter of an end of the through groove 104 near the main body portion 1011 of the connector 101 is larger than a diameter of an end of the filter element 102.

In other embodiments, the through groove 104 may be other types of through grooves such as a prism-shaped through groove, a funnel-shaped through groove, and a trapezoidal through groove. The radial cross section of the through groove 104 may also be a square, pentagon, or hexagon. Or irregular shape, the overall shape of the through groove 104 can also be a sphere, cone, hexahedron, octahedron, and other regular or irregular shapes, as long as the through groove 104 can accommodate the filter element 102 and the connector 101 connected to the filter element 102 It is only necessary that the through slot 104 can improve the filtering performance of the signal filtering device, which is not limited herein.

Because the radial cross-sectional diameter of the end of the through groove 104 near the connector 101 is larger than the radial cross-sectional diameter of the main body portion 1011 of the connector 101, the connector 101 is fixed and the connector 101 is prevented from falling into the cylindrical through groove. This embodiment The signal filtering device further includes a first support base 105 and a second support base 106.

A portion of the connector 101 connected to the filter element 102 is disposed in the first support base 105. In this embodiment, the first support base 105 receives the connection portion 1012 and at least a portion of the main body portion 1011. In order to fix the connector 101, the first support base 105 is attached to the outer wall of the connector 101. Therefore, the radial cross-sectional diameter of the portion of the first support base 105 that accommodates the connection portion 1012 is smaller than that of the portion that accommodates at least part of the body portion 1011 Section diameter. A first boss (not labeled) is formed between a portion of the first support base 105 that receives the connection portion 1012 and a portion that accommodates at least a portion of the main body portion 1011, wherein a lower surface of the first boss is parallel to an upper surface of the cavity 103. A portion of the first support base 105 that receives the connection portion 1012 is located in the through groove 104. On the same horizontal plane, a radial cross-sectional diameter of a portion of the first support base 105 accommodating at least part of the main body portion 1011 is less than or equal to a radial cross-sectional diameter of an end of the through groove 104 near the first support base 105.

In other embodiments, the first support base 105 can fully accommodate the connector 101 or only the connection portion 1012. The shape of the first support base 105 can also be changed according to the shape of the connector 101, which is not limited herein.

The second support base 106 is located below the first support base 105, and the second support base 106 receives the filter element 102 and the first support base 105 receives the connection portion 1012. In this embodiment, the second support base 106 is further configured to support the first support base 105. The top of the second support base 106 abuts the first boss of the first support base 105. The second support base 106 receives the first support base. The radial cross-sectional diameter of the portion accommodating the connecting portion 1012 is larger than the radial cross-sectional diameter of the portion accommodating the filtering element 102. A second protrusion is formed between the portion accommodating the filtering element 102 and the portion accommodating the first support base 105 accommodating the connecting portion 1012 A boss (not labeled), a boss is formed on the inner wall of the through groove 104, the boss corresponding to the second boss, and the lower surface of the second boss is located on the boss. On the same horizontal plane, a radial cross-sectional diameter of a portion of the second support base 106 accommodating the first support base 105 accommodating the connecting portion 1012 is smaller than or equal to a radial cross-sectional diameter of an end of the through slot 104 near the second support base 106.

In this embodiment, the first support base 105, the second support base 106, and the filter element 102 are coaxially arranged. In other embodiments, the first support base 105, the second support base 106, and the filter element 102 may have different axes. The axial direction of the first support base 105 and the second support base 106 can be changed according to the structure and shape of the through groove 104 where the filter element 102 is located. Only the second support base 106 and the first support base 105 can be used to support The connector 101 is only required to accommodate the filtering element 102, and details are not described herein.

In other embodiments, the first support base 105 and the second support base 106 may be combined into one support base. The support base receives the filter element 102, the connecting portion 1012, and a part of the main body portion 1011, and the support base and the through slot 104 The inner wall of the through groove is fitted, and a groove or a boss is provided on the inner wall of the through groove 104 to support the support base. It is also possible to omit the support seat, and provide other structures such as grooves, bosses or threads that are in contact or fit with the connector on the cavity 103 or the through groove 104 to support and fix the connector 101 and the filter element 102.

In the above embodiment, the side of the filter element 102 in contact with the second support base 106 is further provided with a ring structure (not labeled) surrounding the filter element 102. The inner diameter of the ring structure is the same as or close to the maximum outer diameter of the filter element. The inner diameter of the ring structure is near the maximum outer diameter of both ends of the filter element 102, and the filter element 102 and the ring structure form a closed structure, so that the filter element 102 can perform signal transmission or signal filtering work stably.

The tap piece 107 is connected to an end of the filtering element 102 far from the connector 101, and the tap piece 107 is connected to the signal receiving end or signal output end of the filtering element 102 far from the connector 101. The tap piece 107 penetrates the cavity 103, and one end connected to the filtering element 102 is located in the through groove 104, and the other end far from the filtering element 102 is located on a side of the cavity 103 away from the through groove 104. In this embodiment, the tap piece 107 is used to transmit a signal to the filtering element 102 or to transmit the signal filtered by the filtering element 102 to other devices. The tap piece 107 may be a signal line, a metal piece, a coil, a circuit board, or the like. For a device for transmitting signals, in other embodiments, the tap piece 107 may also be disposed at the end of the filter element 102 near the connector 101 as long as the tap piece 107 and the connector 101 are signal input / output ends of the filter element 102, respectively. The specific position of the tap piece 107 with respect to the connector 101 is not limited.

In the above embodiment, the filtering element 102 may be a low-pass filtering element, a high-pass filtering element, a band-pass filtering element, or other types of filtering elements, as long as the filtering element can implement signal filtering, and details are not described herein.

In the above embodiment, the signal filtering device is one of a cavity filter, a duplexer, a duplexer, a splitter, a combiner, and a tower top amplifier, and details are not described herein.

The beneficial effect of the present application is: different from the situation of the prior art, the present application proposes a signal filtering device, in which the part connecting the connector with the filtering element and the filtering element are arranged in the through slot of the cavity, reducing the number of filtering elements. Occupying space, this application can save costs and improve the space utilization of the signal filtering device.

Based on the same inventive concept, the present application also proposes a signal transceiving device.

Please refer to FIG. 3. FIG. 3 is a schematic structural diagram of an embodiment of a signal transmitting and receiving device according to the present application. The signal transmitting and receiving device 20 includes a signal filtering device 22 and an antenna 21. (Labeled) connection, the antenna 21 is used to input the received signal into the signal filtering device 22 or send the signal output by the signal filtering device 22 out.

The signal transceiving device 20 may be a signal transceiving device such as a base station or a wireless transmission tower, as long as the device has a signal filtering device and an antenna, which is not limited herein.

The structure of the signal filtering device 22 is the same as that of the above embodiment, and will not be described in detail here.

The beneficial effect of the present application is: different from the situation in the prior art, the present application proposes a signal transceiving device. The part connecting the connector with the filter element and the filter element are arranged in the through slot of the cavity to reduce the occupied space of the filter element. This application can save costs and improve the space utilization rate of the signal transceiving equipment.

The above description is only an implementation of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of the application, or directly or indirectly applied to other related technologies The fields are equally covered by the patent protection scope of this application.

Claims (26)

1. A signal filtering device, characterized in that the signal filtering device includes:

   A cavity, the cavity including at least one through slot;

   Connector for transmitting signals;

   A filtering element, one end of which is connected to the connector;

   Wherein, a portion where the connector is connected to the filter element and the filter element are both disposed in the through slot.
2. The signal filtering device according to claim 1, wherein the signal filtering device further comprises:

   A cover plate that covers the cavity to form a resonant cavity, and the cover plate includes at least one through hole;

   The connector is disposed through the through hole.
3. The signal filtering device according to claim 2, wherein the through groove is disposed perpendicular to the cover plate.
4. The signal filtering device according to claim 1, wherein at least part of the connector is coaxially provided with the filtering element.
5. The signal filtering device according to claim 4, wherein the signal filtering device further comprises a first support base, and a portion of the connector connected to the filter element is disposed in the first support base.
6. The signal filtering device according to claim 5, wherein the signal filtering device further comprises a second support base, the second support base is arranged around the filter element, and supports the first support base, so that The second support base is located in the through groove, and the second support base is in abutment with the inner wall of the through groove.
7. The signal filtering device according to claim 6, wherein the connector includes a connecting portion and a main body portion, the connecting portion is connected to the filtering element, and the main body portion is disposed at the connecting portion away from the filtering portion. On one side of the element, the main body portion, the connection portion, and the filter element are coaxially disposed, and a diameter of a radial section of the body portion is larger than a diameter of a radial section of the connection portion.
8. The signal filtering device according to claim 7, wherein the first support base receives the connection portion and at least part of the main body portion, and the first support base receives a radial direction of a portion of the connection portion. The diameter of the cross-section is smaller than the diameter of the radial cross-section of the portion accommodating the at least part of the main body portion, and a first boss is formed between the portion accommodating the connection portion and the portion accommodating the at least part of the main body portion.
9. The signal filtering device according to claim 8, wherein the second support base accommodates the filter element, and a portion of the first support base that accommodates the connection portion is located in the second support base, A diameter of a radial section of a portion of the first support seat located in the second support seat is larger than a diameter of a radial section of a portion that accommodates the filter element, and a portion of the second support seat that accommodates the filter element A second boss is formed between a portion accommodating the first support base, and a top of the second support base abuts the first boss of the first support base.
10. The signal filtering device according to claim 9, wherein the first support base, the second support base, and the filter element are coaxially disposed.
11. The signal filtering device according to claim 1, wherein the signal filtering device further comprises a tap piece, and the tap piece is connected to an end of the filtering element remote from the connector.
12. The signal filtering device according to claim 1, wherein the filtering element is a low-pass filtering element, a high-pass filtering element, or a band-pass filtering element.
13. The signal filtering device according to any one of claims 1 to 12, wherein the signal filtering device is a cavity filter, a duplexer, a duplexer, a splitter, a combiner, and a tower top amplifier. One of them.
14. A signal transmitting and receiving device, characterized in that the signal transmitting and receiving device includes a signal filtering device and an antenna, and the antenna is connected to an input terminal / output terminal of the signal filtering device;

    The signal filtering device includes:

    A cavity, the cavity including at least one through slot;

    Connector for transmitting signals;

    A filtering element, one end of which is connected to the connector;

    Wherein, a portion where the connector is connected to the filter element and the filter element are both disposed in the through slot.
15. The signal transmitting and receiving device according to claim 14, wherein the signal filtering device further comprises:

    A cover plate that covers the cavity to form a resonant cavity, and the cover plate includes at least one through hole;

    The connector is disposed through the through hole.
16. The signal transceiving device according to claim 15, wherein the through slot is disposed perpendicular to the cover plate.
17. The signal transceiving device according to claim 14, wherein at least part of the connector is coaxially disposed with the filter element.
18. The signal transmitting and receiving device according to claim 17, wherein the signal filtering device further comprises a first support base, and a portion of the connector connected to the filter element is disposed in the first support base.
19. The signal transmitting and receiving device according to claim 18, wherein the signal filtering device further comprises a second support base, the second support base is arranged around the filter element, and supports the first support base, so that The second support base is located in the through groove, and the second support base is in abutment with the inner wall of the through groove.
20. The signal transmitting and receiving device according to claim 19, wherein the connector includes a connecting portion and a main body portion, the connecting portion is connected to the filtering element, and the main body portion is disposed at the connecting portion away from the filtering portion. On one side of the element, the main body portion, the connection portion, and the filter element are coaxially disposed, and a diameter of a radial section of the body portion is larger than a diameter of a radial section of the connection portion.
21. The signal transmitting and receiving device according to claim 20, wherein the first support base accommodates the connection portion and at least a part of the main body portion, and the first support base receives a radial direction of a portion of the connection portion. The diameter of the cross-section is smaller than the diameter of the radial cross-section of the portion accommodating the at least part of the main body portion, and a first boss is formed between the portion accommodating the connection portion and the portion accommodating the at least part of the main body portion.
22. The signal transmitting and receiving device according to claim 21, wherein the second support base accommodates the filter element, and a portion of the first support base that accommodates the connection portion is located in the second support base, A diameter of a radial section of a portion of the first support seat located in the second support seat is larger than a diameter of a radial section of a portion that accommodates the filter element, and a portion of the second support seat that accommodates the filter element A second boss is formed between a portion accommodating the first support base, and a top of the second support base abuts the first boss of the first support base.
23. The signal transmitting and receiving device according to claim 22, wherein the first support base, the second support base, and the filter element are coaxially disposed.
24. The signal transmitting and receiving device according to claim 14, wherein the signal filtering device further comprises a tap piece, and the tap piece is connected to an end of the filtering element remote from the connector.
25. The signal transceiving device according to claim 14, wherein the filter element is a low-pass filter element, a high-pass filter element, or a band-pass filter element.
26. The signal transmitting and receiving device according to any one of claims 14 to 25, wherein the signal filtering device is a cavity filter, a duplexer, a duplexer, a splitter, a combiner, and a tower top amplifier One of them.