CN219286651U

CN219286651U - Disc antenna

Info

Publication number: CN219286651U
Application number: CN202320379910.XU
Authority: CN
Inventors: 林博群; 杨华; 章玉涛; 潘建民; 黄嘉能; 陶飞; 陈耀平
Original assignee: Guangdong Shenglu Communication Co ltd; Guangdong Shenglu Telecommunication Tech Co Ltd
Current assignee: Guangdong Shenglu Communication Co ltd; Guangdong Shenglu Telecommunication Tech Co Ltd
Priority date: 2023-03-02
Filing date: 2023-03-02
Publication date: 2023-06-30
Anticipated expiration: 2033-03-02

Abstract

The utility model relates to the technical field of communication devices, in particular to a disc antenna, which comprises a honeycomb antenna, a double-frequency WIFI antenna, a GNSS antenna, a PCB (printed circuit board) and a metal bottom plate; the cellular antenna, the dual-frequency WIFI antenna and the GNSS antenna are respectively arranged on the PCB, and the bottom end of the PCB is connected with the metal bottom plate; the utility model realizes broadband, miniaturization and integration, improves the performance efficiency of the antenna, saves the cost and is convenient for installation.

Description

Disc antenna

Technical Field

The utility model relates to the technical field of communication devices, in particular to a disc antenna.

Background

With the rapid development of communication technology, the demands of the internet of things antenna with systemization, small volume and multi-antenna combination are more obvious. In the related art, most of the antennas of the internet of things adopt a method of using a longer cable in order to reduce standing waves, and the method not only reduces the antenna efficiency and increases the antenna production time, but also can cause the waste of cables, has larger size and increases the production cost.

Therefore, providing a disc antenna of the internet of things with systemization, small antenna volume, low cost and coexistence of multiple frequency and multiple systems is a technical problem to be solved.

Disclosure of Invention

The present utility model provides a disc antenna to solve one or more of the technical problems of the prior art, and at least provides a beneficial choice or creation condition.

In order to achieve the above object, the present utility model provides the following technical solutions:

the disc antenna comprises a cellular antenna, a dual-frequency WIFI antenna, a GNSS antenna, a PCB board and a metal bottom plate;

the honeycomb antenna, the dual-frequency WIFI antenna and the GNSS antenna are respectively arranged on the PCB, and the bottom end of the PCB is connected with the metal bottom plate.

In some embodiments, the cellular antenna includes a PC bracket, a feed radiating element, and a ground radiating element; the feed radiation unit and the grounding radiation unit are arranged on the upper surface of the PC bracket in a gap manner, and resonance is generated through coupling feed; the feed radiating element and the grounding radiating element are electrically connected with the inner core of the cable welded on the PCB.

In some embodiments, the cellular antenna includes a first connection tab and a second connection tab of metal;

the first connecting piece and the second connecting piece are attached to the PC bracket, one end of the first connecting piece is connected with the feed radiation unit, and the other end of the first connecting piece is directly welded with an inner core of a cable welded on the PCB; one end of the second connecting sheet is connected with the feed radiation unit, and the other end of the second connecting sheet is directly welded with the inner core of the cable welded on the PCB.

In some embodiments, the upper surface of the PC bracket is horizontal.

In some embodiments, the dual-frequency WIFI antenna is electrically connected to an inner core of a cable soldered on a PCB board.

In some embodiments, the dual-frequency WIFI antenna further includes a third connecting piece made of metal, the third connecting piece is perpendicular to the PCB board, one end of the third connecting piece is connected to the dual-frequency WIFI antenna, and the other end of the third connecting piece is directly welded to an inner core of a cable welded on the PCB board.

In some embodiments, the dual-band WIFI antenna further includes a fourth connecting piece made of metal, where the fourth connecting piece is disposed on the PCB, and one end of the fourth connecting piece extends upward and is connected to the third connecting piece.

In some embodiments, the third and fourth connection tabs are integrally formed.

In some embodiments, the housing of the GNSS antenna is made of ceramic material.

In some embodiments, the upper surface of the metal bottom plate is also connected with a PCB auxiliary plate with single-sided tin-plating.

The utility model has the beneficial effects that: through adopting modularized cellular antenna, dual-frenquency WIFI antenna, GNSS antenna indirect and metal bottom plate to jointly ground, realize that many system of multifrequency are many antenna systems coexist for the antenna has realized broadband, miniaturization, integration, improves antenna performance efficiency. In the aspect of the structure, the PCB is used as a carrier to be connected with the metal bottom plate, so that the cellular antenna, the dual-frequency WIFI antenna and the GNSS antenna are realized, the GNSS antenna is grounded together, the cost is saved, and the installation is convenient.

Drawings

Fig. 1 is an overall structure diagram of a cellular antenna provided by an embodiment;

fig. 2 is an exploded view of a cellular antenna according to an embodiment;

fig. 3 is a block diagram of a dual-frequency WIFI antenna according to an embodiment.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the present utility model will be further described with reference to the embodiments and the accompanying drawings.

In the description of the present utility model, the meaning of a number is not quantitative, and the meaning of a number is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and the meaning of above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that elements are listed and may include other elements not expressly listed.

First, several nouns involved in the present utility model are parsed:

FPC (Flexible Print Circuit) the FPC antenna contacts with the PCB circuit board through the independent metal shrapnel, and the FPC antenna is equivalent to the antenna line on the PCB to be pulled out, and other outside metals are used as the antenna. The FPC antenna may be placed vertically, horizontally, or coplanar with the host wiring board without any significant impact on performance.

The GNSS antenna is a GPS/GLONASS compatible antenna, and is mainly used as a transmitting antenna of an on-channel forwarding system and also used as a receiving antenna of a GPS navigation and positioning system. The antenna is in the form of a microstrip. The directivity pattern essentially achieves hemispherical radiation. The antenna is composed of a radome, a microstrip radiator, a bottom plate, a high-frequency output socket and the like, and is small in size and convenient to use in cooperation with a tripod.

The PC bracket is a PC bracket which is formed by taking polycarbonate as a main component and adopting a CO-EXTRUSION technology CO-EXTRUSION, has the characteristics of neutral oil resistance, high transparency, light weight, impact resistance, sound insulation, heat insulation, flame resistance, ageing resistance and the like.

The utility model aims to solve the defects of the prior art and provide a disc antenna which aims to reduce production cost, improve antenna efficiency, reduce space occupation rate and has reasonable design.

As shown in fig. 1, a disc antenna according to an embodiment of the present utility model includes: cellular antenna 100, dual-frequency WIFI antenna 200, GNSS antenna 300, PCB board 400, and metal chassis 500;

the cellular antenna 100, the dual-frequency WIFI antenna 200, and the GNSS antenna 300 are respectively disposed on the PCB 400, and the bottom end of the PCB 400 is connected to the metal bottom plate 500.

In the embodiment of the present utility model, the modularized cellular antenna 100, the dual-frequency WIFI antenna 200, and the GNSS antenna 300 are indirectly grounded together with the metal base plate 500, so as to realize coexistence of multiple frequency and multiple systems, so that the antenna achieves broadband, miniaturization, integration, and improvement of antenna performance efficiency. In terms of structure, the PCB 400 is used as a carrier to be connected with the metal bottom plate 500, so that the cellular antenna 100, the dual-frequency WIFI antenna 200 and the GNSS antenna 300 are realized, the GNSS antenna 300 is grounded together, the cost is saved, and the installation is convenient.

In some modified embodiments, the cellular antenna 100 includes a PC bracket 110, a feed radiating element 120, and a ground radiating element 130; the feeding radiation unit 120 and the grounding radiation unit 130 are arranged on the upper surface of the PC bracket 110 in a gap, and generate resonance through coupling feeding; the feed radiation unit 120 and the ground radiation unit 130 are electrically connected to the inner core of the cable soldered on the PCB board 400.

Referring to fig. 2, in the embodiment of the present utility model, the antenna element of the cellular antenna 100 is attached to a semicircular PC bracket 110 having an external shape of 88mm diameter and 26mm height, and the coverage range of the frequency band is 698-3800MHz. The feed radiating element 120 of the antenna element is an element arm 60mm long, 10mm wide and 0.5mm high, and the ground radiating element 130 is an element arm 75mm long, 25mm wide and 0.5mm high. In some embodiments, the spacing between the two antenna elements is 1mm, and resonance is generated by coupling feeding in order to expand the antenna bandwidth.

In some modified embodiments, the cellular antenna 100 includes a first connection piece 140 and a second connection piece 150 made of metal;

the first connecting piece 140 and the second connecting piece 150 are attached to the PC bracket 110, one end of the first connecting piece 140 is connected to the feed radiation unit 120, and the other end is directly welded to an inner core of a cable welded on the PCB 400; one end of the second connecting piece 150 is connected to the feed radiation unit 120, and the other end is directly soldered with an inner core of the cable soldered on the PCB 400.

In the embodiment provided by the utility model, the feed oscillator arm is connected with a first connecting piece 140 in a cuboid shape, the first connecting piece 140 is attached to the PC bracket 110 to be bent downwards, the other end of the first connecting piece 140 is directly welded with the inner core of the cable welded on the PCB 400, the production process is reduced, the production efficiency is improved, the cost is reduced, the antenna performance efficiency is improved, and in some embodiments, the length of the first connecting piece 140 is 35mm, the width of the first connecting piece is 0.5mm, and the height of the first connecting piece is 23mm. The grounding vibrator arm is connected with a second connecting piece 150 in a cuboid shape, the second connecting piece 150 is attached to the PC bracket 110 and is bent downwards, and the other end of the second connecting piece 150 is directly welded on the PCB 400 for grounding. In some embodiments, the second connecting piece 150 has a length of 30mm, a width of 0.5mm, and a height of 26mm, and screw mounting holes are further provided on the PC bracket 110 for fixing the PC bracket 110.

In some modified embodiments, the upper surface of the PC stand 110 is level.

In the embodiment provided by the present utility model, the cellular antenna 100 includes a PC bracket 110, a feeding radiating unit 120, a grounding radiating unit 130, a first connection piece 140 and a second connection piece 150; the feeding radiation unit 120 and the grounding radiation unit 130 are disposed on the upper surface of the PC bracket 110 at a gap, and resonate by coupling feeding, thereby forming an FPC antenna; the first connecting piece 140 and the second connecting piece 150 are attached to the PC bracket 110, one end of the first connecting piece 140 is connected to the feed radiation unit 120, and the other end is directly welded to an inner core of a cable welded on the PCB 400; one end of the second connecting piece 150 is connected to the feed radiation unit 120, and the other end is directly soldered with an inner core of the cable soldered on the PCB 400.

In some modified embodiments, the dual-band WIFI antenna 200 is electrically connected to the inner core of a cable soldered on the PCB board 400.

In some improved embodiments, the dual-frequency WIFI antenna 200 further includes a third connection piece 210 made of metal, where the third connection piece 210 is disposed perpendicular to the PCB 400, and one end of the third connection piece is connected to the dual-frequency WIFI antenna 200, and the other end of the third connection piece is directly welded to an inner core of a cable welded on the PCB 400.

Referring to fig. 3, in the embodiment provided by the utility model, the dual-frequency WIFI antenna 200 is a metal oscillator, the external shape is 29mm long, 5mm wide, 9mm high and 0.35mm thick, the tail end of the dual-frequency WIFI antenna 200 is connected with a curved third connecting piece 210, the third connecting piece 210 is made of metal, and the cable core is directly welded with the third connecting piece to realize feeding of the dual-frequency WIFI antenna 200, and in some embodiments, the dimensions of the third connecting piece 210 are 6mm long, 0.35mm wide and 8mm high.

In some improved embodiments, the dual-frequency WIFI antenna 200 further includes a fourth connecting piece 220 made of metal, where the fourth connecting piece 220 is disposed on the PCB 400, and one end of the fourth connecting piece extends upward and is connected to the third connecting piece 210.

In the embodiment provided by the utility model, the bottom of the dual-frequency WIFI antenna 200 is additionally provided with the fourth connecting sheet 220 connected with the third connecting sheet 210, so that the stability of the structure is improved, the production and welding are facilitated, the production efficiency is improved, and in some embodiments, the length of the fourth connecting sheet 220 is 15mm, the width is 6.5mm, and the thickness is 0.35mm.

In some modified embodiments, the third connecting piece 210 and the fourth connecting piece 220 are integrally formed.

In some modified embodiments, the housing of the GNSS antenna 300 is made of ceramic material.

In the embodiment provided by the utility model, the GNSS antenna 300 has a square body with a side length of 25mm and a height of 6mm, is welded on the PCB 400 with a length of 40mm and a width of 32mm, and is commonly grounded with the metal bottom plate 500 by adding metal screws around. Because the grounding area of the GNSS antenna 300 is smaller, the grounding areas of the cellular antenna 100 and the dual-frequency WIFI antenna 200 can be increased, and the performances of the cellular antenna 100 and the dual-frequency WIFI antenna 200 are improved.

In some modified embodiments, a single-sided tin-plated PCB sub-board 600 is further connected to the upper surface of the metal base plate 500.

Referring to fig. 2, in the embodiment provided by the present utility model, the metal bottom plate 500 is a circular shape with a diameter of 90mm, and in order to improve the utilization rate of available space inside the antenna, a single-sided tin-plated PCB sub-plate 600 is added to be connected with the metal bottom plate, so that the whole antenna grounding area is maximized.

In some embodiments, the disk antenna includes a cellular antenna 100 with frequency bands of 698-960MHz and 1690-3800MHz, a dual-band WIFI antenna 200 with frequency bands of 2400-2500MHz and 5150-5900MHz, and a GNSS antenna 300 with frequency bands of 1559-1606 MHz. The frequency coverage of the disk antenna in the utility model comprises: cellular antenna 100:698MHz-960MHz, 1690-3800MHz; dual-band WIFI antenna 200:2400MHz-2500MHz, 5150-5900MHz; GNSS antenna 300:1559MHz to 1606MHz;

compared with the prior art, the disc antenna provided by the utility model adopts an antenna structure mainly composed of a metal base plate 500, a PCB 400, a honeycomb antenna 100 combined by FPC and a PC bracket 110, a dual-frequency WIFI antenna 200, a GNSS antenna 300 made of ceramic materials, a metal screw support column and a coaxial cable, the PC bracket 110 is fixed by the metal screw support column to be attached with the FPC honeycomb antenna 100 and the ceramic antenna, and simultaneously, the three antennas are grounded together in a mode of connecting the PCB 400 with the metal base plate 500, so that multi-frequency multi-system integration and small-volume integration are realized. The utility model has the advantages of small size, convenient installation, low cost and good electrical property, and is suitable for mass production.

The embodiments described in the embodiments of the present utility model are for more clearly describing the technical solutions of the embodiments of the present utility model, and do not constitute a limitation on the technical solutions provided by the embodiments of the present utility model, and those skilled in the art can know that, with the evolution of technology and the appearance of new application scenarios, the technical solutions provided by the embodiments of the present utility model are equally applicable to similar technical problems.

It will be appreciated by persons skilled in the art that the technical solutions shown in the drawings are not meant to limit the embodiments of the present utility model, and that the terms "first," "second," "third," "fourth," etc. (if any) in the description of the present utility model and the above drawings are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

It should be understood that in the present utility model, "at least one (item)" means one or more, and "a plurality" means two or more. "and/or" for describing the association relationship of the association object, the representation may have three relationships, for example, "a and/or B" may represent: only a, only B and both a and B are present, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b or c may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or plural.

The preferred embodiments of the present utility model have been described above with reference to the accompanying drawings, and are not thereby limiting the scope of the claims of the embodiments of the present utility model. Any modifications, equivalent substitutions and improvements made by those skilled in the art without departing from the scope and spirit of the embodiments of the present utility model shall fall within the scope of the claims of the embodiments of the present utility model.

Claims

1. The disc antenna is characterized by comprising a cellular antenna, a double-frequency WIFI antenna, a GNSS antenna, a PCB board and a metal bottom plate;

2. The disc antenna of claim 1, wherein the cellular antenna comprises a PC bracket, a feed radiating element, and a ground radiating element; the feed radiation unit and the grounding radiation unit are arranged on the upper surface of the PC bracket in a gap manner, and resonance is generated through coupling feed; the feed radiating element and the grounding radiating element are electrically connected with the inner core of the cable welded on the PCB.

3. The disc antenna of claim 2, wherein the cellular antenna comprises a first tab and a second tab of metallic material;

4. A disc antenna according to claim 3, wherein the upper surface of the PC bracket is horizontal.

5. The disc antenna of claim 1, wherein the dual-frequency WIFI antenna is electrically connected to an inner core of a cable soldered to a PCB board.

6. The disc antenna of claim 5, wherein the dual-frequency WIFI antenna further comprises a third connecting piece made of metal, the third connecting piece is perpendicular to the PCB, one end of the third connecting piece is connected with the dual-frequency WIFI antenna, and the other end of the third connecting piece is directly welded with an inner core of a cable welded on the PCB.

7. The disc antenna of claim 6, wherein the dual-band WIFI antenna further comprises a fourth connecting piece made of metal, the fourth connecting piece is disposed on the PCB, and one end of the fourth connecting piece extends upwards and is connected to the third connecting piece.

8. The disc antenna of claim 7 wherein the third and fourth tabs are integrally formed.

9. The disc antenna of claim 1, wherein the housing of the GNSS antenna is ceramic.

10. The disc antenna of claim 1, wherein the upper surface of the metal base plate is further connected with a single-sided tin-plated PCB sub-board.