Dielectric resonator antenna

Abstract

The utility model discloses a dielectric resonator antenna which comprises a circuit board and a ceramic dielectric block, the circuit board is provided with a bonding pad, the lower part of the wall surface of the ceramic dielectric block is provided with a metal coating, and the metal coating is welded and conducted with the bonding pad. The dielectric resonator antenna is simple and novel in structure, a metal conductor in the prior art is replaced by the metal coating arranged on the ceramic dielectric block, so that an injection molding step is not needed in the production process of the dielectric resonator antenna, the production process of the dielectric resonator antenna is simplified, the production and manufacturing of the dielectric resonator antenna are facilitated, and the production cost is reduced. The production efficiency of the dielectric resonator antenna is improved, the manufacturing cost of the dielectric resonator antenna is reduced, and the dielectric resonator antenna is high in processing precision, good in production consistency and high in yield.

Description

Technical Field

[0001] The utility model relates to the technical field of antennas, in particular to a dielectric resonator antenna. Background Art

[0002] Dielectric resonant antennas are usually manufactured using machined ceramic materials with high dielectric constants and relatively low losses combined with metal conductors (to excite electromagnetic waves). The processing and manufacturing process requires that the L-shaped metal conductor and the ceramic dielectric block be precisely positioned and tightly combined to avoid the problem of mismatch between the actual antenna and the electromagnetic theoretical design.

[0003] In the prior art dielectric resonator antenna, the ceramic dielectric block and the L-shaped metal conductor are generally fixed together by an injection molding process, and then the metal conductor is welded to the pad of the circuit board by SMT process or other processes. Figure 1 As shown, the plastic body 6 for fixing the metal conductor 5 and the ceramic dielectric block 3 has a mold slider hole 61. During the injection molding process, the mold slider holds the metal conductor 5 against the ceramic dielectric block 3 (after demolding, the mold slider hole 61 is formed on the plastic body 6 at the corresponding position of the mold slider) to ensure that the metal conductor and the ceramic dielectric block can be tightly fitted. It is not difficult to see that the existing dielectric resonator antenna needs to be configured with a relatively complex injection mold during the production process, and the production efficiency is relatively low. Utility Model Content

[0004] The main purpose of the utility model is to provide a dielectric resonator antenna with a novel structure, aiming to solve the problem that the existing dielectric resonator antenna is inconvenient to produce.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a dielectric resonator antenna, including a circuit board and a ceramic dielectric block, the circuit board is provided with a soldering pad, the lower part of the wall surface of the ceramic dielectric block is provided with a metal coating, and the metal coating is welded and connected to the soldering pad.

[0006] In one embodiment, the ceramic dielectric block is in a rectangular shape, and the four walls of the ceramic dielectric block are respectively provided with the metal coating.

[0007] In one embodiment, the wall surface of the ceramic dielectric block has a roughened area, and the metal coating layer is disposed in the roughened area.

[0008] In one embodiment, the ceramic dielectric block and the circuit board are fixedly connected and conductively connected through a SMT process.

[0009] In one embodiment, the periphery of the bottom of the ceramic dielectric block is bonded and fixed to the circuit board by insulating glue.

[0010] In one embodiment, the number of the ceramic dielectric blocks is plural.

[0011] In one embodiment, a plurality of the ceramic dielectric blocks are arranged in a row.

[0012] The beneficial effects of the utility model are as follows: the dielectric resonator antenna has a simple and novel structure, and utilizes a metal coating disposed on a ceramic dielectric block to replace the metal conductor in the prior art, so that the production process of the dielectric resonator antenna does not require an injection molding step, simplifies the production process of the dielectric resonator antenna, facilitates the production of the dielectric resonator antenna, is beneficial to improving the production efficiency of the dielectric resonator antenna, and reduces the manufacturing cost of the dielectric resonator antenna. Moreover, the dielectric resonator antenna has high processing accuracy, good production consistency, and high yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0014] Figure 1 A schematic diagram of a part of the structure of a dielectric resonator antenna in the prior art;

[0015] Figure 2 This is an exploded view of a dielectric resonator antenna according to a first embodiment of the utility model;

[0016] Figure 3 This is a schematic structural diagram of a dielectric resonator antenna according to a first embodiment of the utility model.

[0017] Description of Figure Numbers:

[0018] 1. Circuit board;

[0019] 2. Solder pad;

[0020] 3. Ceramic dielectric block;

[0021] 4. Metal coating;

[0022] 5. Metal conductor;

[0023] 6. Plastic body;

[0024] 61. Module slider hole. DETAILED DESCRIPTION

[0025] The purpose, features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] It should be noted that if the embodiments of the present invention involve directional indications such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0028] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0029] In addition, if the meaning of "and / or" appears in the full text is to include three parallel solutions, taking "and / or" as an example, it includes solutions, or solutions, or solutions that are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0030] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] Embodiment 1

[0032] Please refer to Figure 2 and Figure 3The first embodiment of the utility model is: a dielectric resonator antenna, including a circuit board 1 and a ceramic dielectric block 3, the circuit board 1 is provided with a pad 2, the lower part of the wall of the ceramic dielectric block 3 is provided with a metal coating 4, the metal coating 4 is welded and connected with the pad 2, preferably the metal coating 4 is formed by chemical plating process, and the metal coating 4 is in a long strip shape.

[0033] In this embodiment, the ceramic dielectric block 3 is in a rectangular shape, and the four walls of the ceramic dielectric block 3 are respectively provided with the metal coating 4. Accordingly, the circuit board 1 has four pads 2 corresponding to the installation area of ​​a single ceramic dielectric block 3. At this time, the four pads 2 are connected and conducted with the four metal coatings 4 on the ceramic dielectric block 3 in a one-to-one correspondence. In other embodiments, the number and setting position of the metal coating 4 on the ceramic dielectric block 3 can be selected according to actual needs.

[0034] In order to ensure the bonding force between the metal coating 4 and the ceramic dielectric block 3 and ensure the structural stability of the dielectric resonator antenna, preferably, the wall surface of the ceramic dielectric block 3 has a roughened area, and the metal coating 4 is arranged in the roughened area.

[0035] As a preferred embodiment, the ceramic dielectric block 3 is fixedly connected and conducted with the circuit board 1 through the SMT process. The ceramic dielectric block 3 can be connected and conducted with the circuit board 1 by surface mounting, which further facilitates the processing and manufacturing of the dielectric resonator antenna.

[0036] Optionally, the periphery of the bottom of the ceramic dielectric block 3 is bonded and fixed to the circuit board 1 by insulating glue. The insulating glue connecting the ceramic dielectric block 3 and the circuit board 1 can improve the bonding strength between the ceramic dielectric block 3 and the circuit board 1, thereby further improving the structural stability of the dielectric resonator antenna.

[0037] The dielectric resonator antenna of this embodiment is an array dielectric resonator antenna, so the number of the ceramic dielectric blocks 3 is multiple, and preferably the multiple ceramic dielectric blocks 3 are arranged in a row. Specifically, the number of the ceramic dielectric blocks 3 is four, and of course, in other embodiments, the number of the ceramic dielectric blocks 3 can also be other numbers, such as six, eight, etc.

[0038] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A dielectric resonator antenna, comprising a circuit board and a ceramic dielectric block, wherein the circuit board is provided with a pad, characterized in that: A metal coating is provided at the lower part of the wall surface of the ceramic dielectric block, and the metal coating is welded and connected to the pad; the ceramic dielectric block is in a rectangular shape, and the four wall surfaces of the ceramic dielectric block are respectively provided with the metal coating.

2. The dielectric resonator antenna according to claim 1, characterized in that: The wall surface of the ceramic dielectric block has a roughened area, and the metal coating layer is arranged in the roughened area.

3. The dielectric resonator antenna according to claim 1, characterized in that: The ceramic dielectric block and the circuit board are fixedly connected and conducted through the SMT process.

4. The dielectric resonator antenna according to claim 1, characterized in that: The periphery of the bottom of the ceramic dielectric block is bonded and fixed to the circuit board by insulating glue.

5. The dielectric resonator antenna according to claim 1, characterized in that: The number of the ceramic dielectric blocks is plural.

6. The dielectric resonator antenna according to claim 5, characterized in that: A plurality of the ceramic dielectric blocks are arranged in a row.

Images