CN220692303U

CN220692303U - Metal duplexer

Info

Publication number: CN220692303U
Application number: CN202322292810.6U
Authority: CN
Inventors: 龙泉; 王汝青; 刘江
Original assignee: Suzhou Weijie Communication Technology Co ltd
Current assignee: Suzhou Weijie Communication Technology Co ltd
Priority date: 2023-08-25
Filing date: 2023-08-25
Publication date: 2024-03-29
Anticipated expiration: 2033-08-25

Abstract

The utility model relates to the technical field of communication accessories, and particularly discloses a metal duplexer, which comprises a shielding box, a bottom plate and a cover plate, wherein the shielding box is arranged on the bottom plate to form a cavity assembly of resonance shielding; an integrated resonator is arranged on the bottom plate; a cover plate is arranged on the top of the shielding box, and a tuning piece is arranged on the cover plate; a connector is arranged on the side wall of the shielding box, and a probe tap is arranged in the connector; the probe taps are plugged inside when the connector is mounted on the shield can. Through cooperation between shielding box, bottom plate, apron, tuning, connector and the probe tap, owing to coupling bandwidth is greater than 3.5GHz, and the time delay of taking a percentage is 0.14nS, can effectively promote working bandwidth in the during operation, on the basis of reducing shielding box size, has effectively improved the Q value of duplexer, has provided huge breakthrough for aspects such as miniaturization and the large bandwidth of communication technology development.

Description

Metal duplexer

Technical Field

The utility model relates to the technical field of communication accessories, in particular to a metal duplexer.

Background

With the rapid development of communication technology, particularly from 5G to 5.5G and 6G times, the high integration, full duplex, large bandwidth, small volume and low cost filter becomes an essential communication accessory of a communication system, and the duplexer is a main accessory of a different-frequency duplex radio station and a relay station and has the function of isolating transmitting and receiving signals and ensuring that both receiving and transmitting can work normally at the same time. The device consists of two groups of band-pass filters with different frequencies, and avoids the transmission of local transmitting signals to a receiver.

FDD, frequency division duplexing, refers to operation of the uplink (mobile to base station) and downlink (base to mobile) with two separate frequencies (with a certain frequency spacing requirement), and the mode operates on a symmetrical frequency band. FDD is suitable for wireless communication systems that provide a single radio frequency channel for each user.

The existing filter can not meet the full duplex requirement of a future communication system, and meanwhile, the traditional FDD type duplexer can not meet the requirement of a large bandwidth of the future communication system although realizing full duplex through frequency division, so that the development of the communication system is restricted, and a certain defect exists.

Disclosure of Invention

The present utility model is directed to a metal duplexer for solving the above-mentioned problems.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the metal duplexer comprises a shielding box, a bottom plate and a cover plate, wherein the shielding box is arranged on the bottom plate to form a cavity assembly of resonance shielding; an integrated resonator is arranged on the bottom plate; a cover plate is arranged on the top of the shielding box, and a tuning piece is arranged on the cover plate; a connector is arranged on the side wall of the shielding box, and a probe tap is arranged in the connector; the probe taps are plugged inside when the connector is mounted on the shield can.

Further, the integrated resonator comprises a plurality of resonant rods, and the resonant rods are connected through connecting blocks.

Further, the tuning piece comprises a mounting plate arranged on the cover plate, a plurality of tuning cavities are formed in the mounting plate, and the tuning cavities correspond to the resonant rods respectively.

Further, a resonant cavity is arranged in the shielding box.

Further, the cover plate and the bottom plate are welded on the upper side and the lower side of the shielding box respectively.

Further, the cover plate, the shielding box and the bottom plate are connected through a plurality of groups of connecting components; the connecting piece comprises a positioning bolt which is rotationally connected to the cover plate, a through hole is formed in the cover plate, and the positioning bolt is rotationally connected to the cover plate through the through hole; the shielding box is provided with a positioning hole, the bottom plate is provided with a fastening hole, and the positioning bolt penetrates through the positioning hole and is in threaded connection with the fastening hole.

Further, the side wall of the shielding box is provided with a mounting hole, and the connector is mounted on the shielding box through the mounting hole; the connector is connected with the shielding box through a fastener; one end of the connector, which is far away from the shielding box, is provided with a threaded piece.

Further, the fastener includes the connecting plate of installing on the connector, install fastening bolt on the connecting plate, set up the locking hole on the shielding box lateral wall, when the connector is installed on the shielding box, fastening bolt installs in the locking hole.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the metal duplexer, the shielding box, the bottom plate, the cover plate, the tuning piece, the connector and the probe tap are matched, the coupling bandwidth is larger than 3.5GHz, the tap time delay is 0.14nS, the working bandwidth can be effectively improved during working, the Q value of the duplexer is effectively improved on the basis of reducing the size of the shielding box, and a great breakthrough is provided for the aspects of miniaturization, large bandwidth and the like of the development of communication technology.

2. All components are integrated together through a welding process, so that the product height can be effectively reduced, leakage between signal channels is avoided when the bandwidth is large, and the performance of the duplexer is better realized.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is a schematic diagram of an overall structure according to an embodiment of the present utility model;

FIG. 2 is a schematic view of an explosion part structure according to an embodiment of the present utility model;

FIG. 3 is a schematic view of an exploded view of an embodiment of the present utility model;

fig. 4 is a schematic structural diagram of a shielding box according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram of a cover plate according to an embodiment of the present utility model;

FIG. 6 is a schematic view of a bottom structure according to an embodiment of the present utility model;

fig. 7 is a schematic view of a partial structure of a connector according to an embodiment of the present utility model.

Reference numerals illustrate: 1. a cover plate; 2. a shielding box; 3. a bottom plate; 4. a resonant rod; 5. a connecting block; 6. a resonant cavity; 7. a tuning cavity; 8. a mounting hole; 9. a connecting plate; 10. a fastening bolt; 11. a probe tap; 12. a screw; 13. a through hole; 14. positioning holes; 15. a fastening hole; 16. and positioning bolts.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-7, the present utility model provides a technical solution: a metal duplexer comprises a shielding box 2, a bottom plate 3 and a cover plate 1, wherein the shielding box 2 is arranged on the bottom plate 3 to form a cavity assembly of resonance shielding; an integrated resonator is arranged on the bottom plate 3; a cover plate 1 is arranged on the top of the shielding box 2, and a tuning piece is arranged on the cover plate 1; a connector is arranged on the side wall of the shielding box 2, and a probe tap 11 is arranged in the connector; the probe tap 11 is plugged inside when the connector is mounted on the shield case 2.

Specifically, the metal duplexer includes a shielding case 2, a bottom plate 3, and a cover plate 1. Specifically, the shielding case 2, the bottom plate 3 and the cover plate 1 are all made of metal materials. Wherein the shielding cage 2 is mounted on the bottom plate 3 forming a cavity assembly of a resonant shield. An integrated resonator is mounted on the base plate 3, wherein the resonator is an electronic component generating a resonance frequency, and is commonly divided into a quartz crystal resonator and a ceramic resonator. The frequency generation function has the characteristics of stability and good anti-interference performance. Wherein, a cover plate 1 is arranged on the top of the shielding box 2, and a tuning piece is arranged on the cover plate 1; the side wall of the shielding box 2 is provided with a connector, wherein the connector is in the prior art, and the working principle of the connector is not repeated here. Wherein the connector is internally provided with probe taps 11; when the connector is mounted on the shielding cage 2, the probe tap 11 is plugged inside and used with a cavity assembly integrating the resonator and the resonance shield. The number of the connectors is designed according to the requirements of the working environment, the bottom plate 3, the shielding box 2 and the cover plate 1 can be adjusted according to the actual requirements, and can be designed into any shape according to the requirements of actual process production, so that greater convenience is provided for the subsequent product design and development. Meanwhile, as the coupling bandwidth is larger than 3.5GHz, the tap time delay is 0.14nS, the working bandwidth can be effectively improved during working, the Q value of the duplexer is effectively improved on the basis of reducing the size of the shielding box 2, and a great breakthrough is provided for the aspects of miniaturization, large bandwidth and the like of the development of communication technology. Where the Q value is proportional to the decay time of the resonance and inversely proportional to the linewidth. The higher the value, the higher the frequency stability of the resonator, and therefore, the more accurate.

In another embodiment provided by the utility model, in the frequency band of 10G-18G, the frequency spectrum resource is fully utilized, a wideband duplexer with large bandwidth and small volume is realized, the passband frequency of the frequency band I is 10-13.5GHz, the passband frequency of the frequency band II is 14.5-18GHz, the communication bandwidth is as high as 3.5GHz, the effective volume of the product is only 33 x 21 x 10mm, and the requirements of future communication fittings with large bandwidth and small volume are greatly met. The effective bandwidth and the use frequency band of the product can be freely combined in the communication frequency band by adjusting the tap and the coupling window, so that the duplex performance is further improved.

In the embodiment provided by the utility model, the integrated resonator comprises a plurality of resonant rods 4, the resonant rods 4 are connected through connecting blocks 5, specifically, the resonant rods 4 are designed according to the number of tuning cavities 7 and the number of coupling windows required in the simulation design of the filter, corresponding indexes are realized through tuning and coupling, the interval is used for transmitting signals, the height is designed according to the tuning or coupling frequency of each cavity, the insertion loss or inhibition index of a product can be changed by increasing or decreasing the number, and the index can be increased or decreased according to the actual product index. The plurality of resonant rods 4 are connected through a connecting block 5 for facilitating the realization of coupling signals.

In the embodiment provided by the utility model, specifically, the tuning piece comprises a mounting plate arranged on the cover plate 1, a plurality of tuning cavities 7 are formed in the mounting plate, the tuning cavities 7 correspond to the resonant rods 4 respectively, and by arranging the tuning cavities 7 in the cover plate 1, an object can be used to pass through tuning holes of the cover plate 1 and transfer frequency resonance to high frequency in a cover plate 1 mode.

In the embodiment provided by the utility model, the resonant cavity 6 is arranged in the shielding box 2, and the frequency and the resonant cavity 6 form resonance through the resonator, so that the purposes of generating frequency, tuning and producing are achieved, the deformation of the tuning cover plate 1 of the filter is fully utilized to realize tuning, and the height space, weight and cost of the filter are effectively saved; the volume of the whole machine can be reduced, the processing difficulty can be reduced, the processing cost can be saved, more tuning design flexibility can be increased for the filter design, and the miniaturization and the light weight of the filter can be realized.

In the embodiment provided by the utility model, the cover plate 1 and the bottom plate 3 are respectively welded on the upper side and the lower side of the shielding box 2, and the product height can be effectively reduced by welding, so that leakage between signal channels is avoided in the case of large bandwidth, and the performance of the duplexer is better realized.

In another embodiment provided by the utility model, the cover plate 1, the shielding box 2 and the bottom plate 3 are connected through a plurality of groups of connecting pieces; the connecting piece comprises a positioning bolt 16 which is rotationally connected to the cover plate 1, a through hole 13 is formed in the cover plate 1, and the positioning bolt 16 is rotationally connected to the cover plate 1 through the through hole 13; the shielding box 2 is provided with the positioning hole 14, the bottom plate 3 is provided with the fastening hole 15, and the positioning bolt 16 penetrates through the positioning hole 14 and then is in threaded connection with the fastening hole 15, so that the cover plate 1, the shielding box 2 and the bottom plate 3 are convenient to detach, and when an instrument in the shielding box 2 is damaged, the instrument in the shielding box 2 is convenient to maintain or replace.

In the embodiment provided by the utility model, the side wall of the shielding box 2 is provided with the mounting hole 8, and the connector is arranged on the shielding box 2 through the mounting hole 8; the connector is connected with the shielding box 2 through a fastener, and one end, far away from the shielding box 2, of the connector is provided with a threaded piece 12, so that the connector is convenient to use.

In the embodiment provided by the utility model, the fastening piece comprises the connecting plate 9 arranged on the connector, the fastening bolt 10 is arranged on the connecting plate 9, the side wall of the shielding box 2 is provided with the locking hole, and when the connector is arranged on the shielding box 2, the fastening bolt 10 is arranged in the locking hole, so that the connector can be conveniently installed and detached.

It should be noted that the electric equipment in the present application can be powered by a storage battery or an external power supply.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a metal duplexer, includes shielding box, bottom plate and apron, its characterized in that:

the shielding box is arranged on the bottom plate to form a cavity assembly of the resonance shielding;

an integrated resonator is arranged on the bottom plate; a cover plate is arranged on the top of the shielding box, and a tuning piece is arranged on the cover plate;

a connector is arranged on the side wall of the shielding box, and a probe tap is arranged in the connector;

the probe taps are plugged inside when the connector is mounted on the shield can.

2. A metal diplexer according to claim 1, characterized in that: the integrated resonator comprises a plurality of resonant rods, and the resonant rods are connected through connecting blocks.

3. A metal diplexer according to claim 2, characterized in that: the tuning piece comprises a mounting plate arranged on the cover plate, a plurality of tuning cavities are formed in the mounting plate, and the tuning cavities correspond to the resonant rods respectively.

4. A metal diplexer according to claim 3, characterized in that: and a resonant cavity is arranged in the shielding box.

5. A metal diplexer according to claim 1, characterized in that: the cover plate and the bottom plate are respectively welded on the upper side and the lower side of the shielding box.

6. A metal diplexer according to claim 1, characterized in that: the cover plate, the shielding box and the bottom plate are connected through a plurality of groups of connecting pieces;

the connecting piece comprises a positioning bolt which is rotationally connected to the cover plate, a through hole is formed in the cover plate, and the positioning bolt is rotationally connected to the cover plate through the through hole;

the shielding box is provided with a positioning hole, the bottom plate is provided with a fastening hole, and the positioning bolt penetrates through the positioning hole and is in threaded connection with the fastening hole.

7. A metal diplexer according to claim 1, characterized in that: the side wall of the shielding box is provided with a mounting hole, and the connector is mounted on the shielding box through the mounting hole; the connector is connected with the shielding box through a fastener;

one end of the connector, which is far away from the shielding box, is provided with a threaded piece.

8. The metal diplexer of claim 7, wherein: the fastener is including installing the connecting plate on the connector, install fastening bolt on the connecting plate, set up the locking hole on the shielding box lateral wall, when the connector is installed on the shielding box, fastening bolt installs in the locking hole.