CN211404695U

CN211404695U - Communication device, dielectric filter, and resonator block

Info

Publication number: CN211404695U
Application number: CN202020310105.8U
Authority: CN
Inventors: 谢懿非; 丁海; 林显添
Original assignee: Comba Telecom Technology Guangzhou Ltd; Jingxin RF Technology Guangzhou Co ltd
Current assignee: Comba Telecom Technology Guangzhou Ltd; Jingxin RF Technology Guangzhou Co ltd
Priority date: 2020-03-13
Filing date: 2020-03-13
Publication date: 2020-09-01
Anticipated expiration: 2030-03-13

Abstract

The utility model discloses a communication device, dielectric filter and resonance piece. This resonance piece, including the body, the surface of body is equipped with first conducting layer, and the body is equipped with the coupling hole and sets up in the second conducting layer of the internal surface in coupling hole, and the second conducting layer encloses to establish and is used for and contact pin complex mating holes and with the communicating exhaust structure of mating holes, is equipped with between second conducting layer and the first conducting layer and dodges the district. The resonance block is beneficial to reducing the manufacturing cost of the dielectric waveguide filter; the dielectric filter adopts the resonance block, so that the manufacturing cost can be reduced, and the yield can be improved. The communication device adopts the dielectric waveguide filter, can adapt to the miniaturization development of the antenna, and is favorable for reducing the construction cost.

Description

Communication device, dielectric filter, and resonator block

Technical Field

The utility model relates to the field of communication technology, especially, relate to a communication device, dielectric filter and resonance piece.

Background

With the rapid development of communication systems, the 5G era is entered, and the existing iron tower has limited resources, so that the 5G base station is required to be miniaturized. The filter is a frequency-selecting device, is an indispensable part of communication equipment, and is an important device for miniaturization of 5G equipment.

In the traditional dielectric filter, a plane notch needs to be added to a contact pin, which is beneficial to discharging rosin and ensuring the welding effect in the welding process. However, the pins are too small, so that the pins are actually processed, the cost is high, and the yield is low.

SUMMERY OF THE UTILITY MODEL

In view of this, it is necessary to provide a communication device, a dielectric filter, and a resonator block. The resonance block is beneficial to reducing the manufacturing cost of the dielectric waveguide filter; the dielectric filter adopts the resonance block, so that the manufacturing cost can be reduced, and the yield can be improved. The communication device adopts the dielectric waveguide filter, can adapt to the miniaturization development of the antenna, and is favorable for reducing the construction cost.

The technical scheme is as follows:

on the one hand, the application provides a resonance piece, including the body, the surface of body is equipped with first conducting layer, and the body is equipped with the coupling hole and sets up in the second conducting layer of the internal surface in coupling hole, and the second conducting layer encloses to establish to be used for with contact pin complex mating holes and with the communicating exhaust structure of mating holes, be equipped with between second conducting layer and the first conducting layer and dodge the district.

When the resonance block is applied to the dielectric waveguide, the exhaust structure which is the same as the matching hole is arranged, so that the contact pin is directly inserted into the matching hole without a plane cutting process, and is welded and fixed with the second conducting layer by using solder paste. In the process, rosin volatilized by the solder paste in high-temperature heating can be discharged through the exhaust structure, and the welding effect is ensured. Compared with the prior art, the holes are processed on the resonance block, the plane cutting is easier to process on the small-size contact pin, and the yield is higher. Namely, the improvement of the resonance block is beneficial to reducing the manufacturing cost of the dielectric waveguide filter and improving the processing efficiency and the yield.

The technical solution is further explained below:

in one embodiment, the exhaust structure is an exhaust groove and is opened on the inner side wall of the matching hole.

In one embodiment, the coupling hole is a counterbore.

In one embodiment, the coupling holes are through holes.

In one embodiment, the mating holes are stepped holes.

In one of the embodiments, the body is further provided with a resonance hole for forming a resonance path.

In one embodiment, the resonator block further includes a coupling via disposed through the body and the first conductive layer, the coupling via mating with the coupling via.

On the other hand, the application also provides a dielectric filter, which comprises the resonance block in any of the above embodiments, and further comprises a pin, wherein one end of the pin is inserted into the coupling hole, and is welded and fixed with the second conductive layer to form a signal terminal.

When the dielectric filter is manufactured, the exhaust structure which is the same as the matching hole is arranged on the resonance block, so that the contact pin is directly inserted into the matching hole without a plane cutting process and is welded and fixed with the second conducting layer by using the solder paste. In the process, rosin volatilized by the solder paste in high-temperature heating can be discharged through the exhaust structure, and the welding effect is ensured. Compared with the prior art, the holes are processed on the resonance block, the plane cutting is easier to process on the small-size contact pin, and the yield is higher. And the dielectric waveguide filter has lower manufacturing cost and higher processing efficiency and yield.

The technical solution is further explained below:

in one embodiment, the mating holes are stepped holes and the pins are provided with stepped posts that mate with the stepped holes.

In another aspect, the present application further provides a communication device including the dielectric filter in any of the above embodiments.

The communication device adopts the dielectric waveguide filter, can adapt to the miniaturization development of the antenna, and is favorable for reducing the construction cost.

Drawings

FIG. 1 is a schematic half-section view of a resonator block in one embodiment;

FIG. 2 is an enlarged schematic view of A shown in FIG. 1;

FIG. 3 is a schematic diagram of the resonant block and the pin shown in FIG. 1;

FIG. 4 is a schematic enlarged partial top view of the structure shown in FIG. 3;

FIG. 5 is a partially enlarged view of B shown in FIG. 3;

fig. 6 is a schematic bottom view of the resonator block shown in fig. 1.

Description of reference numerals:

100. a resonance block; 110. a first conductive layer; 120. a coupling hole; 130. a second conductive layer; 140. a mating hole; 150. an exhaust structure; 160. an avoidance zone; 170. a resonant aperture; 180. a coupling via; 200. and (6) inserting pins.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the following detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

It will be understood that when an element is referred to as being "secured to," "disposed on," "secured to," or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Further, when one element is considered as "fixed transmission connection" with another element, the two elements may be fixed in a detachable connection manner or in an undetachable connection manner, and power transmission can be achieved, such as sleeving, clamping, integrally-formed fixing, welding and the like, which can be achieved in the prior art, and is not cumbersome. When an element is perpendicular or nearly perpendicular to another element, it is desirable that the two elements are perpendicular, but some vertical error may exist due to manufacturing and assembly effects. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The references to "first" and "second" in the present invention do not denote any particular quantity or order, but rather are merely used to distinguish one name from another.

In traditional dielectric filter, insert the port back of contacting with dielectric filter, weld the two together with the tin cream, because the tin cream can volatilize rosin when high temperature heating, influences the welding effect. Therefore, a plane notch needs to be added to the contact pin, which is beneficial to discharging rosin in the welding process and ensuring the welding effect. The conventional planar notch of the pin is formed by a turning process, but the pin 200 is too small, so that the actual processing is difficult, the cost is high, and the yield is low.

Based on this, as shown in fig. 1 to 5, the present application provides a dielectric filter including a resonance block 100 as a core component of the filter and a pin 200 for forming a signal terminal.

The resonant block 100 comprises a body, wherein a first conductive layer 110 is arranged on the outer surface of the body, the body is provided with a coupling hole 120 and a second conductive layer 130 arranged on the inner surface of the coupling hole 120, the second conductive layer 130 surrounds a matching hole 140 used for matching with the contact pin 200 and an exhaust structure 150 communicated with the matching hole 140, and an avoiding region 160 is arranged between the second conductive layer 130 and the first conductive layer 110.

One end of the pin 200 is inserted into the coupling hole 120 and is soldered to the second conductive layer 130 to form a signal terminal.

In the manufacturing of the dielectric filter, since the exhaust structure 150 is provided on the resonator block 100, which is the same as the mating hole 140, the pin 200 is directly inserted into the mating hole 140 without performing a planar cutting process, and is fixed to the second conductive layer 130 by solder reflow. In this process, rosin that may volatilize when the solder paste is heated at a high temperature may be removed through the exhaust structure 150, thereby ensuring the soldering effect. Machining holes in the resonating block 100 is easier and yields higher than machining planar cuts in small-sized pins 200, as compared to conventional techniques. And the dielectric waveguide filter has lower manufacturing cost and higher processing efficiency and yield.

The material of the body of the "resonator block 100" may be any material that can meet the use requirement, such as ceramic.

The "coupling hole 120" includes, but is not limited to, press-forming during the manufacturing of the resonator mass 100, or sintering and machining the resonator mass 100.

Alternatively, after the resonant block 100 is manufactured with the coupling hole 120, the first conductive layer 110, the second conductive layer 130 and the avoiding region 160 are formed by any one of the prior art. It should be understood that the relief zone 160 does not have a conductive layer, i.e., the relief zone 160 is located to expose the body of the resonator mass 100.

Optionally, in an embodiment, the coupling hole 120 is a counterbore.

Optionally, in an embodiment, the coupling hole 120 is a through hole.

In this way, the type of coupling hole 120 can be selected according to actual needs.

The "mating holes 140 and the venting structures 150" can be fabricated in a variety of ways, including but not limited to directly using the coupling holes 120 after plating a uniform second conductive layer 130. As long as it can satisfy the use requirement, it is not limited too much here.

In addition to the above embodiments, as shown in fig. 4, in one embodiment, the exhaust structure 150 is an exhaust groove and is opened on the inner sidewall of the matching hole 140. Thus, the manufacturing difficulty is reduced, and the alloy can be directly injection molded and then electroplated.

Alternatively, at least two exhaust structures 150 are disposed at intervals around the mating holes 140. Therefore, the exhaust efficiency and the exhaust reliability are further improved.

In addition to any of the above embodiments, as shown in fig. 6, in one embodiment, the body is further provided with a resonance hole 170 for forming a resonance path. In this way, the resonance hole 170 facilitates the resonance passage and also enables the resonance frequency of the resonance passage to be adjusted in cooperation with the resonance rod.

In addition to any of the above embodiments, as shown in fig. 6, in an embodiment, the resonator block 100 further includes a coupling through hole 180 disposed through the body and the first conductive layer 110, and the coupling through hole 180 is matched with the coupling hole 120. Therefore, energy radiation is conveniently carried out by using the coupling through hole 180, and the filtering performance is optimized.

Alternatively, the plurality of resonant holes 170 are spaced apart to define a ring, and the coupling through-hole 180 is disposed within the ring. Therefore, the filtering performance of the dielectric filter can be optimized as soon as possible without increasing the manufacturing cost.

On the basis of any of the above embodiments, as shown in fig. 1 and fig. 3, in one embodiment, at least two coupling holes 120 are provided, the pins 200 and the coupling holes 120 form at least two signal terminals in a one-to-one correspondence, at least one signal terminal is an input signal terminal, and at least one signal terminal is an output signal terminal, which satisfy the signal input and output of the dielectric filter.

In addition to any of the above embodiments, in one embodiment, the fitting hole 140 is a stepped hole, i.e. the cross section is "T" shaped, and the pin 200 is provided with a stepped pillar which fits the stepped hole. Therefore, the welding area of the contact pin 200 is increased, and the connection between the contact pin and the contact pin is more reliable.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a resonance piece, its characterized in that, includes the body, the surface of body is equipped with first conducting layer, the body be equipped with the coupling hole and set up in the second conducting layer of the internal surface in coupling hole, the second conducting layer enclose establish be used for with contact pin complex mating holes and with the communicating exhaust structure of mating holes, the second conducting layer with be equipped with between the first conducting layer and dodge the district.

2. The resonator block of claim 1, wherein the vent structure is a vent slot and opens on an inner sidewall of the mating hole.

3. The resonator mass of claim 1, wherein the coupling aperture is a counterbore.

4. The resonator block of claim 1, wherein the coupling holes are through holes.

5. The resonator block of claim 1, wherein the mating hole is a stepped hole.

6. The resonator block according to claim 1, characterized in that the body is further provided with a resonator hole for forming a resonator passage.

7. The resonator block of any one of claims 1 to 6, further comprising a coupling through-hole provided through the body and the first conductive layer, the coupling through-hole cooperating with the coupling hole.

8. A dielectric filter comprising the resonator block according to any one of claims 1 to 7, and further comprising a pin, one end of which is inserted into the coupling hole and soldered to the second conductive layer to form a signal terminal.

9. The dielectric filter of claim 8, wherein the mating hole is a stepped hole, and the pin is provided with a stepped post that mates with the stepped hole.

10. A communication device comprising a dielectric filter according to claim 8 or 9.