WO2018149236A1

WO2018149236A1 - Double-layer cavity combiner and public port device thereof

Info

Publication number: WO2018149236A1
Application number: PCT/CN2017/119468
Authority: WO
Inventors: 丁海; 金志刚; 陈振浩; 靳雲玺
Original assignee: 京信通信系统（中国）有限公司; 京信通信技术(广州)有限公司; 京信通信系统（广州）有限公司; 天津京信通信系统有限公司
Priority date: 2017-02-17
Filing date: 2017-12-28
Publication date: 2018-08-23
Also published as: CN106785275B; CN106785275A

Abstract

Disclosed are a double-layer cavity combiner and a public port device thereof. A first baffle is located in a shell to divide the shell into a first layer of the cavity and a second layer of the cavity, and a second baffle is located on the first baffle to divide the first layer of the cavity into a first head cavity and a second head cavity. The shell is provided with a common connector hole connected to a common connector, and the side of the first baffle, facing the common connector hole, is recessed and provided with a coupling window. The first baffle, the second baffle, a first resonant column, a second resonant column or a third resonant column is provided with a coupling hole. One end of a coupling rod is used to be connected to the common connector, and the other end thereof is inserted into the coupling hole. In the present invention, port bandwidth allocation with upper-and-lower double layers and three pathways can be realized simply by means of one rod plug-in coupling, thus making the double-layer structure capable of being applied more widely in modern mobile communication systems. In addition, the present invention omits a common resonant cavity required in traditional structural designs, and has the advantages of a low insertion loss, a small volume, convenience during processing, and a low processing cost.

Description

Double cavity combiner and its common port device

Technical field

The present invention relates to the field of communication device technologies, and in particular, to a dual-layer cavity combiner and a common port device thereof.

Background technique

In modern mobile communication technology, microwave devices composed of microwave filters have become an indispensable and important component. Among them, the microwave cavity combiner is composed of a multi-path filter, and when the pass band is large, the double-layer cloth cavity mode is advantageous for miniaturization of the device. At present, the commonly used double-cavity combiner is only used to realize the two filter path combination of the upper and lower layers. When three filter paths are needed to be combined, three filter paths are required to be directly and common with the tapped metal lines. The port and the coupling rod are connected. This will result in three solder joints on the common port and the coupling rod, which makes the intermodulation index of the combiner worse. Or you need to add an additional common resonant cavity in the first layer to combine the two paths. The road can realize the upper and lower double-layer three-way combination. This design will increase the number of resonant cavities, which not only increases the insertion loss and manufacturing cost, but also can not further miniaturize the device.

Summary of the invention

Based on this, the present invention overcomes the deficiencies of the prior art, and provides a double-cavity combiner and a common port device thereof, which can realize the distribution of the bandwidth of the upper and lower three-channel ports of the double-layer cavity by using a coupling rod, which has The insertion loss is small, the volume is small, the processing is easy, and the processing cost is low, and the solderless point thereof can reduce the nonlinear factor of the device.

Its technical solutions are as follows:

A common port device for a double-layer cavity combiner, comprising a casing, a first partition, a second partition, a first resonant column, a second resonant column, a third resonant column, and a coupling rod, the first partition a plate is disposed in the housing for separating the inner cavity of the housing to form a first layer cavity and a second layer cavity, the second partition being disposed on the first partition for The first layer cavity is divided to form a first first cavity and a second first cavity, the first resonant column is located in the first first cavity, and the second resonant column is located in the second first cavity, the first a third resonant column is located in the second layer cavity, the housing is provided with a common joint hole for connecting a common joint, and a side of the first partition facing the common joint hole is concavely provided with a coupling window, The first head cavity, the second head cavity, and the second layer cavity are both in communication with the coupling window, the first partition, the second partition, the first resonant column, the a coupling hole is formed in the second resonant column or the third resonant column, and one end of the coupling rod is connected to the common joint, and the other end is inserted into the In the coupling hole, a signal is transmitted from the common joint to the coupling rod, and then through the coupling hole and the coupling window, and finally radiated to the first head cavity, the second head cavity and the second layer Cavity.

In one embodiment, the third resonant column includes a pylon disposed on the first partition and a resonant column body on the pedestal, and the coupling hole is opened on the pedestal.

In one of the embodiments, the coupling hole is disposed opposite to the common joint hole.

In one embodiment, a dielectric sleeve sleeved on the coupling rod is further disposed, and the dielectric sleeve is located in the coupling hole.

In one embodiment, a gap is provided between a side of the second partition facing the common joint hole and the housing.

In one embodiment, the coupling rod includes a first stage rod inserted into the coupling hole and a second stage rod for connection with a common joint, the first stage rod having a larger diameter than the second stage rod diameter of.

In one embodiment, the coupling rod includes a first stage rod inserted into the coupling hole and a second stage rod for connection with a common joint, the first stage rod having a diameter smaller than the second level rod diameter of.

In one embodiment, the coupling window includes a first window that interfaces with the first head cavity and a second window that interfaces with the second head cavity, and the bottom of the first window is concavely provided with an expansion port .

In one embodiment, the coupling window includes a first window that interfaces with the first head cavity and a second window that interfaces with the second head cavity, and the bottom of the second window is concavely provided with an expansion port .

The technical solution also provides a double cavity combiner comprising the common port device.

The advantages or principles of the foregoing technical solutions are described below:

The common port device of the double-cavity combiner of the present invention divides the inner cavity of the casing into two upper and lower layers through the first partition, and then separates the first layer cavity by the second partition to form a first filter. The first head cavity of the path and the second head cavity of the second filter path, the second layer cavity may constitute a third head cavity of the third filter path. At the same time, the first spacer of the present invention is provided with a coupling window, and the coupling window connects the first layer cavity and the second layer cavity in abutting manner, and connects the first head cavity and the second head cavity in a butt connection. The present invention has a coupling hole formed in the first spacer, the second spacer, the first resonant column, the second resonant column or the third resonant column, and is disposed in the coupling hole A coupling rod that is connected to a common joint. The electromagnetic field energy is finally radiated into the three head cavities through the common joint, the coupling rod, the coupling hole, and the coupling window, thereby realizing the distribution of the bandwidth of the upper and lower three filtering path ports. The public port device of the present invention only needs one rod insertion coupling to realize the port bandwidth allocation of the upper and lower double layer three paths at the same time, which will make the double layer structure form more widely used in modern mobile communication systems; The invention eliminates the common resonant cavity required for the traditional structural design, has the characteristics of small insertion loss, small volume, convenient processing and low processing cost; in addition, the invention does not need to adopt the method of connecting the tap wire, so that the entire common port device is not welded. Points, thereby reducing the non-linear factors of the public port device.

DRAWINGS

1 is a partial cross-sectional view of a public port device according to an embodiment of the present invention;

2 is a longitudinal cross-sectional view of a common port device according to an embodiment of the present invention;

3 is a top plan view of a public port device according to an embodiment of the present invention;

4 is a bottom view of a public port device according to an embodiment of the present invention.

Description of the reference signs:

100, common joint, 200, housing, 210, first head cavity, 220, second head cavity, 230, third head cavity, 240, common joint hole, 300, first partition, 310, coupling window, 311 , first window, 312, second window, 400, second partition, 500, first resonant column, 600, second resonant column, 700, third resonant column, 710, abutment, 711, coupling hole, 720 , the resonant column body, 800, coupling rod.

detailed description

The present invention will be further described in detail below with reference to the drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the scope of the invention.

It is to be noted that when an element is referred to as "connected" to another element, it can be directly connected to the other element or can be connected to the other element. "Electrical connection" as used in the present invention may be referred to as "wired connection" or "wireless connection." In addition, the terms "first" and "second" in the specification are used to distinguish between the various components, elements, steps, etc. in the specification, and are not intended to represent the various components, elements, and steps. Logical relationship or order relationship, etc.

As shown in FIG. 1 and FIG. 2, the common port device of the double-cavity combiner of the present invention comprises a housing 200, a first partition 300, a second partition 400, a first resonant column 500, and a second The resonant column 600, the third resonant column 700, and the coupling rod 800. The first partition plate 300 is located in the casing 200 for separating the inner cavity of the casing 200 into a first layer cavity and a second layer cavity, and the second partition plate 400 is standing on the first The partition 300 is configured to divide the first layer cavity into a first head cavity 210 and a second head cavity 220, and the second layer cavity is a third head cavity 230. The first resonant column 500, the second resonant column 600, and the third resonant column 700 are respectively located in the first head cavity 210, in the second head cavity 220, and in the third head cavity 230 Inside. Specifically, the first resonant column 500 and the second resonant column 600 shown in the drawings of the present embodiment are respectively disposed on the upper surface of the first spacer 300, and the third resonant column 700 is disposed on the first spacer. The lower surface of the 300.

The housing 200 is provided with a common joint hole 240 for connecting the common joint 100, and a coupling window 310 is opened on a side of the first partition 300 facing the common joint hole 240. The coupling window 310 is in communication with the first head cavity 210, the second head cavity 220, and the third head cavity 230. Specifically, as shown in FIG. 1 , the coupling window 310 extends up and down to the first layer cavity and the second layer cavity, and extends left and right to the first head cavity 210 and the second head cavity 220 . a side of the first separator 300, the second separator 400, the first resonator column 500, the second resonator column 600, or the third resonator column 700 facing the common joint hole 240 A coupling hole 711 may be defined, and the coupling hole 711 is disposed opposite to the common joint hole 240. One end of the coupling rod 800 is in communication with the common joint 100 at the common joint hole 240, and the other end is inserted into the coupling hole 711. The signal is transmitted from the common connector 100 to the coupling rod 800, and then passes through the coupling hole 711 and the coupling window 310 to be finally radiated to the first head cavity 210, the second head cavity 220, and the third The first cavity 230.

The following describes the working principle of the above technical solution: the common port device of the present invention divides the inner cavity of the casing 200 into two upper and lower layers through the first partition plate 300, and then passes through the second partition plate 400 to be the first The layer cavity is divided to form a first head cavity 210 of the first filter path and a second head cavity 220 of the second filter path, and the second layer cavity may constitute a third head cavity 230 of the third filter path. At the same time, the first spacer 300 of the present invention is provided with a coupling window 310. The coupling window 310 connects the first layer cavity and the second layer cavity in abutting manner, and the first head cavity 210 and the second head cavity are connected. 220 docking connection. The present invention provides a coupling hole on one of the first spacer 300, the second spacer 400, the first resonant column 500, the second resonant column 600, or the third resonant column 700. 711, and a coupling rod 800 connected to the common joint 100 is disposed in the coupling hole 711. The electromagnetic field energy is finally radiated into the three head cavities through a common port (the common port is composed of the common joint hole 240 and the common joint 100), the coupling rod 800 and the coupling hole 711, and the coupling window 310, thereby implementing three filters. The allocation of the channel port bandwidth. The public port device of the present invention only needs one rod insertion coupling to realize the port bandwidth allocation of the upper and lower double layer three paths at the same time, which will make the double layer structure form more widely used in modern mobile communication systems; The invention eliminates the common resonant cavity required for the traditional structural design, has the characteristics of small insertion loss, small volume, convenient processing and low processing cost; in addition, the invention does not need to adopt the method of connecting the tap wire, so that the entire common port device is not welded. Points, thereby reducing the non-linear factors of the public port device.

In the embodiment, the coupling hole 711 is preferably opened on the third resonant column 700. Specifically, the third resonant column 700 includes a pillar 710 disposed on the first spacer 300 and a resonant pillar body 720 on the pillar 710. The coupling is opened on the pillar 710. Hole 711. It should be noted that the structure of the first resonant column 500 and the second resonant column 600 may be the same as that of the third resonant column 700, that is, the column and the resonant column body structure may also be included. The invention fully utilizes the physical structure of the resonant column, so that the setting of the coupling hole 711 in the common port device is reasonable and effective, and does not affect the device characteristics. Because when the coupling hole 711 is opened on the first separator 300 or the second separator 400, the thickness of the first separator 300 and the second separator 400 needs to be designed to be thick enough, and the second separator is too thick. 400 will affect the frequency distribution of the first head cavity 210 and the second head cavity 220, and thus the present invention preferentially places the coupling hole 711 on the pillar 710 of the resonant column. When the coupling rod 800 is inserted into the third resonant column 700, the electromagnetic field energy is radiated onto the third resonant column 700, that is, the third first cavity 230, and then re-radiated to the first resonant column 500 of the first head cavity 210 via the coupling window 310 and The second resonant column 600 of the second head cavity 220. The housing 200, the first spacer 300, the second spacer 400, and the post 710 of each resonant column of the embodiment may be an integrally formed structure, which simplifies the fabrication of the entire device.

It should be noted that a gap is provided between the side of the second partition 400 facing the common joint hole 240 and the housing 200 to ensure the first head cavity 210, the second head cavity 220 and the first The coupling between the three heads 230 is better. It should be noted that, in one embodiment, when the coupling hole 711 is disposed on a side of the second partition 400 facing the common joint hole 240, the second partition 400 and the housing 200 are required. A gap is provided to ensure that electromagnetic field energy can be radiated from the coupling hole 711 into the first head cavity 210, the second head cavity 220, and the third head cavity 230.

In the present embodiment, the coupling rod 800 is a step bar including a first stage rod extending into the coupling hole 711 and a second stage rod for connection with the common joint 100. The diameter of the first stage rod is greater than the diameter of the second stage rod, or the diameter of the first stage rod is smaller than the diameter of the second stage rod. The diameter of the first-stage rod can be set according to the standard size or the common size of the coupling hole 711, that is, the diameter of the first-stage rod matches the inner diameter of the coupling hole 711; the diameter of the second-stage rod can be required The magnitude of the bandwidth tolerated and the impedance characteristics are set so that the coupling bar 800 can be designed as a step bar. It should be noted that the coupling rod 800 can also be designed as a flat rod structure according to actual needs by those skilled in the art. The invention further includes a dielectric sleeve (not shown) that is sleeved on the coupling rod 800, and the dielectric sleeve is located in the coupling hole 711. The dielectric sleeve is configured to secure the coupling bar 800 to prevent electrical shorting of the coupling bar 800 from the post 710.

The common port device of the present invention can adjust the bandwidth allocation of the upper and lower three port ports by adjusting the position of the coupling hole 711. As shown in FIG. 2, in the actual design process, the coupling hole 711 can be moved or moved down on the surface of the first spacer 300. When the common joint 100 and the coupling rod 800 are placed on the lower layer that is planar with the first partition plate 300 and moved downward, that is, when the coupling hole 711 is located below the first partition 300, the second layer cavity (the first layer) The bandwidth allocation of the three headrooms 230) will increase. Conversely, when the common joint 100 and the coupling rod 800 move upward, such as when moving to the second separator 400, the bandwidth distribution of the second layer cavity is reduced. The upper two channels and the lower layer bandwidth are allocated by adjusting the heights of the common joint 100 and the coupling rod 800.

Since the electromagnetic field energy is generally concentrated between the coupling rod 800 and the coupling hole 711, the length of the dielectric sleeve or the dielectric constant of the dielectric sleeve of the gap between the coupling rod 800 and the coupling hole 711 can be adjusted to adjust the upper two filtering paths (the first Portwidth of a filter path and a second filter path) and a lower filter path (third filter path). In addition, the port bandwidth of the upper two filter paths and the lower filter path can also be adjusted by adjusting the depth of the coupling bar 800 into the coupling hole 711.

When the common joint 100 and the coupling rod 800 are biased toward the lower layer that is planar with the first partition 300, increasing or decreasing the area of one side of the coupling window 310 can adjust the bandwidth allocation of the upper two filter paths. Referring to FIG. 3, when the first window 311 is increased (ie, the coupling window 310 is located on the side of the first resonant column 500), the bandwidth of the first filter path where the first resonant column 500 is located is increased. A bottom of the window 311 is further recessed with an expansion opening 3111 for increasing the area of the first window 311, as shown in FIGS. 1 and 3; likewise, when the second window 312 is enlarged (ie, located at the second resonant column 600). When the coupling window 310 of one side is used, the bandwidth of the second filtering path where the second resonant column 600 is located is increased. The present invention can further recess another opening at the bottom of the second window 312 (not shown in the drawing) ) to increase the area of the second window 312. On the other hand, when the first window 311 is reduced, the bandwidth of the first filter path of the first resonant column 500 is reduced. The present invention can add a filler or the like to the first window 311 to reduce the first window according to actual needs. The area of the second window 312 is reduced. When the second window 312 is reduced, the bandwidth of the second filter path of the second resonant column 600 is reduced. The present invention can add a filler or the like to the second window 312 according to actual needs. The area of the second window 312 is reduced. In addition, please refer to FIG. 4, when the diameter of the third resonant column 700 (column 710 and the resonant column body 720) is increased (increased by the facing area of the inner wall of the casing 200) or close to the inner wall of the casing 200, it will increase. The lower layer bandwidth allocation; likewise, when the diameters of the first resonant column 500 and the second resonant column 600 increase or are close to the inner wall of the housing 200, the bandwidth allocation of the upper two filter paths is increased. Conversely, when the third resonant column 700 is reduced in diameter or away from the inner wall of the housing 200, the lower layer bandwidth distribution is reduced; likewise, when the first resonant column 500 and the second resonant column 600 are reduced in diameter or away from the inner wall of the housing 200 At the same time, the bandwidth allocation of the upper two filter paths is reduced.

The present invention also provides a dual chamber combiner comprising the above described common port device, common joint 100 and one, two or three branch joints (not shown in the drawings). When there are three branch connectors, each branch connector is electrically connected to the first cavity; when the branch connectors are two, two of the first cavity energy are concentrated and electrically connected to one of the branch connectors, and the other first cavity is The other branch connector is electrically connected; when the branch connector is one, the three head cavity energy is concentrated and communicated with the branch connector. It should be noted that the common joint, the branch joint and the like of the present invention may be a joint rod or a wire.

In summary, the present invention realizes the distribution of the bandwidth of the upper and lower three filter path ports by inserting the coupling bar 800 into the coupling hole 711, which will make the two-layer structure form more widely used in modern mobile communication systems. Wherein, the common joint 100 and the coupling rod 800 are directly assembled without welding with the cavity resonance column, and the invention does not need to adopt the method of connecting the tap wire, so that the entire common port device has no solder joints, which not only reduces the assembly difficulty but also reduces the assembly difficulty. A non-linear factor in the public port device. In addition, the present invention can realize the required port bandwidth without increasing the common resonant cavity, and has the characteristics of small insertion loss, small volume, convenient processing and low processing cost compared with the existing co-resonator combiner. In summary, the invention has the advantages of simple structure, easy assembly, low material cost, good reliability and stability, wide applicability, can effectively save production cost, improve product quality and enhance market competitiveness.

The technical features of the above-described embodiments may be arbitrarily combined. For the sake of brevity of description, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be considered as the scope of this manual.

The above-described embodiments are merely illustrative of several embodiments of the present invention, and the description thereof is more specific and detailed, but is not to be construed as limiting the scope of the invention. It should be noted that a number of variations and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention.

Claims

A common port device for a double-layer cavity combiner, comprising: a housing, a first partition, a second partition, a first resonant column, a second resonant column, a third resonant column, and a coupling rod The first partition is located in the casing to partition the inner cavity of the casing into a first layer cavity and a second layer cavity, and the second partition is disposed on the first partition Separating the first layer cavity into a first head cavity and a second head cavity, the first resonator column is located in the first head cavity, and the second resonance column is located in the second head cavity The third resonant column is located in the second layer cavity, the housing is provided with a common joint hole for connecting a common joint, and a side of the first partition facing the common joint hole is concavely coupled a window, the first head cavity, the second head cavity, and the second layer cavity are both in communication with the coupling window, the first spacer, the second spacer, and the first resonance a coupling hole is formed in the column, the second resonant column or the third resonant column, and one end of the coupling rod is used for connecting with a common joint, One end is inserted into the coupling hole; a signal is transmitted from the common joint to the coupling rod, and then passes through the coupling hole and the coupling window to finally radiate to the first head cavity, the second head cavity, and the The second layer of cavity.
A common port device for a double-cavity combiner according to claim 1, wherein said third resonant column includes a pylon disposed on said first diaphragm and a resonance on said pylon The column body is provided with the coupling hole.
A common port device for a two-layer cavity combiner according to claim 1, wherein said coupling hole is disposed opposite said common joint hole.
The common port device of the double-cavity combiner according to claim 1, further comprising a dielectric sleeve sleeved on the coupling rod, the dielectric sleeve being located in the coupling hole.
The common port device of the double-cavity combiner according to claim 1, wherein a gap is provided between a side of the second partition facing the common joint hole and the casing.
A common port device for a double-cavity combiner according to any one of claims 1 to 5, wherein the coupling rod includes a first-stage rod inserted into the coupling hole and is connected to a common joint a second stage rod having a diameter greater than a diameter of the second stage rod.
A common port device for a double-cavity combiner according to any one of claims 1 to 5, wherein the coupling rod includes a first-stage rod inserted into the coupling hole and is connected to a common joint a second stage rod having a diameter smaller than a diameter of the second stage rod.
A common port device for a two-layer cavity combiner according to any one of claims 1 to 5, wherein the coupling window includes a first window that interfaces with the first head cavity and a second window in which the first cavity is butted, and a bottom of the first window is concavely provided with an expansion port.
A common port device for a two-layer cavity combiner according to any one of claims 1 to 5, wherein the coupling window includes a first window that interfaces with the first head cavity and a second window in which the first cavity is butted, and a bottom of the second window is concavely provided with an expansion port.
A double-cavity combiner comprising the common port device of any one of claims 1-9.