CN101651254B - Surface Mounted Panel Antenna - Google Patents

Abstract

The invention discloses a surface-mounted panel antenna, which comprises an antenna, wherein the antenna is provided with a substrate, the surface of the substrate is provided with a radiation metal sheet, the bottom surface of the substrate is provided with a grounding metal sheet, the substrate, the radiation metal sheet and the grounding metal sheet are provided with a through hole, a signal feed-in body passes through the through hole, the end head of the signal feed-in body is electrically connected with the radiation metal sheet, and the tail end of the signal feed-in body is not electrically connected with the grounding metal sheet; the circuit board is attached to the bottom surface of the base body and is provided with a front surface, a back surface and a through hole, the front surface is provided with at least one bonding area, the bonding area is attached to the grounding metal sheet on the bottom surface of the base body, the back surface is provided with at least one first welding spot and a signal feed-in lead which is electrically connected with the signal feed-in body. The invention has the advantages that the panel antenna is electrically connected on the mainboard of the electronic device in a surface adhesion mode, thereby greatly reducing the labor force for assembly and improving the efficiency and the convenience in use.

Description

Surface Mounted Panel Antenna

technical field

The invention relates to an antenna, in particular to a surface-adhesive planar antenna.

Background technique

Wireless communication products have become a part of our daily life. These wireless communication products can be placed in vehicles, public communication equipment, or portable devices. The transmission of these radio waves must be transmitted and received by the antenna. The basic function of the antenna is to couple the electromagnetic energy between the free space and the guiding device. Therefore, in order to match different communication devices, various antennas have been developed, such as dipole antennas (Dipole), panel antennas, and microstrip antennas.

However, the current pin-type panel antennas are shown in Figures 1a and 1b. The antenna 10 has a substrate 101 of ceramic material, the surface of the substrate 101 has a radiating metal sheet 102, the bottom surface of the substrate 101 has a grounding metal sheet 103, the substrate 101, the radiating metal sheet 102 and the grounding metal sheet 103 are provided with There is a through hole 104 for providing a T-shaped signal feeding body 105 to pass through to form a planar antenna structure that can be assembled on the motherboard. However, this kind of pin antenna needs to be glued and welded by hand when it is installed on the motherboard, and it cannot be machined.

Another surface-mounted PATCH, as shown in Figures 2a and 2b, is the currently published surface-mounted PATCH. The antenna 30 has a substrate 301 of ceramic material, and the surface of the substrate 301 has a radiating metal sheet 302. The substrate 301 The bottom surface of the base body 301 has a ground metal sheet 303, and each of the four sides of the base body 301 has a metal electrode 304. This kind of surface mount (SMD) antenna does not need to be glued and hand-soldered, but can be machined directly. However, due to the large volume of the ceramic substrate 301 of the antenna, the temperature curve may not be able to satisfy the uniform temperature of the larger ceramic substrate 301 during surface adhesion, which may cause troubles in the surface adhesion process.

Contents of the invention

The main problem to be solved by the present invention is to provide a surface-mounted planar antenna, that is, a surface-mounted planar antenna is formed by combining a circuit board and a planar antenna, so that the planar antenna is electrically connected to an electronic device in a surface-mounted manner. On the motherboard, it can greatly reduce the manpower of assembly, improve the efficiency and ease of use.

To achieve the above object, the present invention provides a surface-mounted panel antenna, comprising:

An antenna, the antenna has a substrate, the surface of the substrate has a radiating metal sheet, the bottom surface of the substrate is provided with a grounding metal sheet, the substrate, the radiating metal sheet and the grounding metal sheet are provided with a perforation, and the perforation is used for a signal feeding body to pass through However, the end of the signal feed-in body is electrically connected to the radiating metal sheet, and the end of the signal feed-in body is not electrically connected to the grounding metal sheet;

A circuit board, attached to the bottom surface of the base body, the circuit board has a front side, a back side and a perforation, the front side has at least one adhesive area, and the adhesive area is attached to the ground metal sheet on the bottom side of the base body, and the back side is provided with at least one The first welding spot, and a signal feed-in wire electrically connected with the signal feed-in body.

The substrate is ceramic material.

The signal feed-in body is T-shaped, with a semicircular end on it, and a shaft extends from the end, and the shaft penetrates into the perforation of the base body, so that the end is electrically connected with the radiating metal sheet, so that The radiating metal sheet forms a signal receiving end, and the signal feeding body forms a signal feeding end.

Glue or double-sided tape is laid on the bonding area.

The peripheral edge of the front hole has a ring contact, and the ring contact is electrically connected with the signal feed-in body.

A ground soldering point is added on the front side to be electrically connected with the first soldering point on the back side.

A signal feed-in wire is provided on the back of the circuit board, the signal feed-in wire is provided with a first end and a second end, the first end is arranged around the periphery of the through hole, and the second end forms a second solder joint, The end of the signal feed-in body passes through the through hole and is electrically connected with the first end, and the second end is electrically connected with a signal feed-in end of a motherboard.

The signal feeding wire is a planar microstrip line.

The effect achieved by the present invention is that the planar antenna is electrically connected to the main board of the electronic device in a surface-adhesive manner, greatly reducing manpower for assembly, and improving efficiency and ease of use.

Description of drawings

Fig. 1a is a three-dimensional schematic diagram of the appearance of a traditional pin-type flat panel antenna;

FIG. 1b is a schematic diagram of the electrical connection between the panel antenna of FIG. 1a and the main board of the electronic device;

2a and 2b are schematic diagrams of another surface-mounted non-pin antenna in the prior art;

Fig. 3 is the disassembled schematic view of the panel antenna and the circuit board of the present invention;

Fig. 4 is a schematic diagram of another angle decomposition of the panel antenna and the circuit board of the present invention;

5 is a schematic diagram of the combination of the panel antenna and the circuit board of the present invention;

6 is a schematic cross-sectional view of the combination of the panel antenna and the circuit board of the present invention;

Fig. 7 is a schematic diagram of the use state of the flat antenna and the circuit board of the present invention;

Fig. 8 is a schematic cross-sectional view of the combination of the panel antenna and the circuit board of the present invention.

Among them, reference signs:

Antenna 10 Substrate 101

Radiating metal sheet 102 Grounding metal sheet 103

Perforation 104 Signal feed-in body 105

Motherboard 20 Antenna 30

Substrate 301 Radiation metal sheet 302

Ground metal sheet 303 Metal electrode 304

Antenna 1 Ceramic dielectric substrate 11

Radiating metal sheet 12 Grounding metal sheet 13

Perforation 14 Signal feed body 15

End 151 Shaft 152

Terminal 153 circuit board 2

Front 21 Back 22

Adhesive zone 23 Ring joint 24

Perforation 25 The first solder joint 26

Signal feed wire 27 first end 271

The second terminal 272 motherboard 3

Conductive contact 31 Signal feed contact 32

Detailed ways

Relevant technical content and detailed description of the present invention, now cooperate accompanying drawing to explain as follows:

Please refer to FIGS. 3 , 4 , and 5 , which are schematic diagrams of decomposition, decomposition and assembly of the panel antenna and circuit board of the present invention. As shown in the figure: the surface-mounted planar antenna of the present invention includes: an antenna 1 and a circuit board 2 .

The antenna 1 is a cube, which has a ceramic dielectric substrate 11, the surface of the substrate 11 has a radiation metal sheet 12, the bottom surface of the substrate 11 has a ground metal sheet 13, the substrate 11, the radiation metal sheet 12 and the ground metal A perforation 14 is provided on the sheet 13, and the perforation 14 is used to provide a T-shaped signal feed-in body 15 to pass through, and the semicircular end 151 of the signal feed-in body 15 is electrically connected to the radiating metal sheet 12, The radiating metal sheet 12 forms a signal receiving end, and the signal feeding body 15 forms a signal feeding end. After the shaft 152 of the signal feeder 15 passes through the through hole 14 , the end 153 of the shaft 152 is not electrically connected to the ground metal sheet 13 , but only electrically connected to the circuit board 2 .

The circuit board 2 has a front side 21 and a back side 22 on it, the front side 21 has a bonding area 23, and the bonding area 23 can be laid with any one of adhesive glue or double-sided tape, etc., and the front side 21 has a central part The ring contact 24 is electrically connected to the signal feeder 15 . The ring contact 24 is provided with a through hole 25 through the circuit board 2 for the end 153 of the signal feeder 15 to pass through. The back surface 22 is provided with a plurality of first solder joints 26. When the bottom surface of the substrate 11 is attached to the front surface 21 of the circuit board 2, the grounding metal sheet 13 on the substrate 11 forms a grounded state with the first solder joints 26 (in under the high frequency range), or after an additional grounding pad (not shown) on the front side 21 is electrically connected to the first pad 26 of the back side 22, when the substrate 11 is attached to the front side of the circuit board 2 The ground metal sheet 13 of the substrate 11 is in electrical contact with the ground pad, and when the circuit board 2 is electrically connected to the main board (not shown in the figure) of the electronic device, the first pad 26 forms a solid connection and grounding effect. Moreover, a signal feed-in wire 27 is provided on the back side 22 of the circuit board 2, and the first end 271 of the signal feed-in wire 27 is arranged around the through hole 25, and the second end 272 forms a second solder joint. After the end 153 of the signal feed-in body 15 passes through the through hole 25, it is electrically connected to the first end 271, and the second end 272 is electrically connected to the signal feed-in end of the motherboard. In this embodiment, the signal feed wire 27 is a planar microstrip line.

Please refer to FIG. 6 , which is a cross-sectional diagram showing the combination of the panel antenna and the circuit board of the present invention. As shown in the figure: when the bottom surface of the substrate 11 of the antenna 1 is attached to the front surface 21 of the circuit board 2 by adhesive, viscose or double-sided tape, the ground metal sheet 13 on the bottom surface of the substrate 11 is in contact with the front surface 21 of the circuit board 2. The contacts 23 are electrically connected. At the same time, the end 153 of the shaft 152 of the signal feed-in body 15 of the antenna 1 passes through the through hole 25 of the circuit board 2, and is electrically connected with the first end 271 of the signal feed-in wire 27 to form an external adhesion flat panel antenna.

Please refer to FIGS. 7 and 8, which are schematic cross-sectional schematic diagrams showing the use state and combination of the panel antenna and the circuit board of the present invention. After the panel antenna 1 of the present invention is combined with the circuit board 2 to form a surface-mounted panel antenna, the first solder joint 26 on the back of the circuit board 2 is electrically connected to the conductive contact 31 on the motherboard 3 of the electronic device, The second welding point of the second end 272 of the signal feeding wire 27 is electrically connected to the signal feeding point 32 . The planar antenna is electrically connected to the main board 3 of the electronic device in a surface-adhesive manner, which can greatly reduce manpower for assembly, and improve efficiency and ease of use.

The foregoing are only preferred embodiments of the present invention, and are not intended to limit the implementation scope of the present invention. That is, all equivalent changes and modifications made according to the claims of the present invention are covered by the patent scope of the present invention.

Claims (6)

1. A surface-mounted panel antenna, characterized in that it comprises: An antenna, the antenna has a substrate, the surface of the substrate has a radiating metal sheet, the bottom surface of the substrate is provided with a grounding metal sheet, the substrate, the radiating metal sheet and the grounding metal sheet are provided with a perforation, and the perforation is used for a signal feeding body to pass through However, the end of the signal feed-in body is electrically connected to the radiating metal sheet, and the end of the signal feed-in body is not electrically connected to the grounding metal sheet; A circuit board, attached to the bottom surface of the base body, the circuit board has a front side, a back side and a perforation, the front side has at least one adhesive area, the adhesive area is bonded to the ground metal sheet on the bottom surface of the base body, the perforated peripheral edge of the front side There is a ring contact, the ring contact is electrically connected with the signal feed-in body, at least one first solder joint and a signal feed-in wire are provided on the back, a signal feed-in wire is provided on the back of the circuit board, and the signal feed-in wire The incoming wire is provided with a first end and a second end, the first end is arranged around the periphery of the through hole, the second end forms a second welding point, and the end of the through hole is used for passing through the end of the signal feed-in body to connect with the first end. The terminal is electrically connected, and the second terminal is electrically connected with a signal feed-in terminal of a motherboard. 2. The surface-mounted planar antenna as claimed in claim 1, wherein the substrate is made of ceramic material. 3. The surface-mounted panel antenna as claimed in claim 1, wherein the signal feed-in body is T-shaped, and has a semicircular end on it, and a shaft extends from the end, and the shaft penetrates into the In the perforation of the base body, the terminal is electrically connected with the radiating metal sheet, so that the radiating metal sheet forms a signal receiving end, and the signal feeding body forms a signal feeding end. 4 . The surface-mounted planar antenna as claimed in claim 1 , wherein glue or double-sided tape is laid on the bonding area. 5 . The surface-mounted panel antenna as claimed in claim 1 , wherein a ground pad is added on the front side to be electrically connected to the first pad antenna on the back side. 6 . 6. The surface-mounted panel antenna as claimed in claim 1, wherein the signal feed-in wire is a planar microstrip line.

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