CN214336917U - Vehicle-mounted Bluetooth antenna - Google Patents
Vehicle-mounted Bluetooth antenna Download PDFInfo
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- CN214336917U CN214336917U CN202120450604.1U CN202120450604U CN214336917U CN 214336917 U CN214336917 U CN 214336917U CN 202120450604 U CN202120450604 U CN 202120450604U CN 214336917 U CN214336917 U CN 214336917U
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Abstract
The utility model discloses a vehicle-mounted Bluetooth antenna, including Bluetooth antenna module, Bluetooth antenna module includes: the outer shell comprises a base and a top cover covering the base, and an accommodating cavity is formed between the top cover and the base; the PCBA assembly is arranged in the accommodating cavity and comprises a PCB and an antenna radiation unit arranged on the PCB; the antenna radiation unit comprises two inverted F-shaped radiation pieces which are symmetrically arranged, and the two inverted F-shaped radiation pieces are conducted through a metalized through hole; the utility model provides a vehicle-mounted Bluetooth antenna, antenna radiation unit adopt the symmetrical overall arrangement of type of falling F radiation piece to lead to earth connection, feeder line and radiation arm on both sides with the metallized via hole, form spatial structure's PIFA, can effectively improve the radiation efficiency of Bluetooth antenna; the antenna radiation unit is vertically arranged on the PCB, so that the efficiency is higher and the size is smaller; the radiating arm adopts a bending design, the distributed capacitance of the antenna is increased, the Q value is reduced, the bandwidth of the antenna is increased, and the size of the antenna is reduced.
Description
Technical Field
The utility model relates to an automobile antenna technical field especially relates to a bluetooth car antenna.
Background
With the rapid development of the automobile industry, the requirements of users on automobiles are higher and higher. The bluetooth antenna is an important component for transmitting and receiving electromagnetic wave energy in an automobile wireless communication system, and the antenna is another key component which affects the transmission characteristics of the bluetooth module besides a core system chip in the bluetooth module because the technology cannot integrate the antenna into a chip made of a semiconductor.
Most of the existing bluetooth antennas are PIFA antennas, which are named after the side structure is similar to the inverted letter F, the operating length of the PIFA antenna is only a quarter of the operating wavelength, and the structure of the PIFA antenna already contains a grounding metal surface, which can reduce the sensitivity to the grounding metal surface in the module, so the PIFA antenna is very suitable for the bluetooth module device. On the other hand, the PIFA antenna is low in manufacturing cost and can be directly soldered to a PCB because it only needs to use a metal conductor to fit a suitable feed and short the antenna to the ground plane. The metal conductor of the PIFA antenna may be wire or sheet, and if made of metal sheet, it can be designed as SMD component to be soldered on the circuit board to achieve the purpose of hiding the antenna. In order to support the metal plate from short-circuiting with the ground metal plane, an insulating dielectric is usually added between the metal plate and the ground plane.
The bluetooth antenna module is designed to be as small as possible, so that the space of the bluetooth antenna is compressed, the impedance performance of the bluetooth antenna becomes difficult to match, and the narrow bandwidth directly affects the radiation efficiency of the bluetooth antenna.
Therefore, there is a need for further research and practice of the above-mentioned technical problems.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model aims to solve the technical problem that an on-vehicle bluetooth antenna is provided, adopt type of falling F radiation piece symmetrical layout to switch on with the metallization via hole, can effectively improve bluetooth antenna's radiant efficiency.
(II) technical scheme
The utility model provides a technical scheme that above-mentioned problem adopted is:
an on-vehicle bluetooth antenna, includes bluetooth antenna module, bluetooth antenna module includes:
the outer shell comprises a base and a top cover covering the base, and an accommodating cavity is formed between the top cover and the base;
a PCBA component disposed within the receiving cavity, the PCBA component including a PCB board and an antenna radiating element disposed on the PCB board; the antenna radiation unit comprises two inverted F-shaped radiation pieces which are symmetrically arranged, and the two inverted F-shaped radiation pieces are conducted through a metalized through hole;
the coaxial cable assembly comprises a Fakra connector, a coaxial line and a fixing buckle, one end of the coaxial line is connected with the PCB, and the other end of the coaxial line is connected with the Fakra connector.
In the technical scheme, the antenna radiation unit adopts the symmetrical layout of the inverted-F radiation pieces, and the ground wire, the feeder line and the radiation arm on the two sides are conducted through the metalized via hole to form the PIFA with the three-dimensional structure, so that the radiation efficiency of the Bluetooth antenna can be effectively improved. The one end of coaxial line is fixed on the PCB board through the welded mode, and the other end is connected to the vehicle host computer through the Fakra connector on, fixes in the vehicle inside through fixed buckle, can change the length and the buckle position of coaxial line according to different requirements, and the convenience is fixed to bluetooth antenna's installation.
Further, the antenna radiation unit is vertically installed on the PCB board.
Among the above-mentioned technical scheme, antenna radiating element installs perpendicularly on the PCB board, and efficiency is higher, and the size is littleer.
Furthermore, a bending part is arranged on the radiation arm of the inverted F-shaped radiation piece.
Among the above-mentioned technical scheme, the radiation arm adopts the design of buckling, increases antenna distributed capacitance, thereby reduces Q value and increases the antenna bandwidth, also can reduce antenna size simultaneously.
Furthermore, be provided with first locating hole on the PCB board, correspond on the base be provided with first locating post of first locating hole assorted.
Further, be provided with the joint on the top cap and detain, correspond the position on the base be provided with the joint detains assorted joint piece, the top cap with the base matches the joint.
Further, a second positioning hole and a mounting hole are formed in the base.
Among the above-mentioned technical scheme, be provided with second locating hole and mounting hole on the base, conveniently install whole bluetooth antenna in the vehicle.
(III) advantageous effects
Compared with the prior art, the technical scheme of the utility model have following advantage:
the utility model provides a vehicle-mounted Bluetooth antenna, antenna radiation unit adopt the symmetrical overall arrangement of type of falling F radiation piece to lead to earth connection, feed line and radiation arm on two sides with the metallized via hole, form spatial structure's PIFA, can effectively improve the radiation efficiency of Bluetooth antenna;
secondly, the antenna radiation unit of the vehicle-mounted Bluetooth antenna provided by the utility model is vertically arranged on the PCB, so that the efficiency is higher and the size is smaller;
(III) the utility model provides a pair of vehicle-mounted bluetooth antenna, radiation arm adopt the design of buckling, increase antenna distributed capacitance, thereby reduce Q value and increase the antenna bandwidth, also can reduce the antenna size simultaneously.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an exploded state of the embodiment of the present invention;
fig. 3 is a schematic structural diagram of an antenna radiation unit according to an embodiment of the present invention;
fig. 4 is a voltage standing wave diagram according to an embodiment of the present invention.
Wherein: 1 is the shell body, 11 is the base, 111 is first locating column, 112 is the joint piece, 113 is the second locating hole, 114 is the mounting hole, 12 is the top cap, 121 is the joint knot, 2 is PCBA subassembly, 21 is the PCB board, 211 is first locating hole, 22 is the antenna radiation unit, 221 is the type of falling F radiation piece, 222 is the kink, 3 is the coaxial cable subassembly, 31 is the coaxial line, 32 is the Fakra connector, 33 is fixed buckle.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
Examples
As shown in fig. 1-4, the utility model provides a vehicle-mounted bluetooth antenna, including bluetooth antenna module, bluetooth antenna module includes: the outer shell 1 comprises a base 11 and a top cover 12 covering the base 11, and an accommodating cavity is formed between the top cover 12 and the base 11; a PCBA component 2, the PCBA component 2 being disposed within the receiving cavity, the PCBA component 2 comprising a PCB board 21 and an antenna radiating element 22 disposed on the PCB board 21; the antenna radiation unit 22 includes two inverted-F radiation pieces 221 symmetrically arranged, and the two inverted-F radiation pieces 221 are conducted through a metallized via hole; coaxial cable subassembly 3, coaxial cable subassembly 3 includes Fakra connector 32, coaxial line 31 and fixed buckle 33, coaxial line 31's one end with PCB board 21 links to each other, coaxial line 31's the other end with Fakra connector 32 links to each other. The antenna radiation unit 22 adopts the symmetrical layout of the inverted-F radiation pieces 221, and the ground wire, the feeder line and the radiation arm on the two sides are conducted through the metalized via holes to form the PIFA with a three-dimensional structure, so that the radiation efficiency of the Bluetooth antenna can be effectively improved. Coaxial line 31's one end is fixed on PCB board 21 through the welded mode, and the other end is connected to the vehicle host computer through Fakra connector 32 on, is fixed in the vehicle through fixed buckle 33 inside, can change coaxial line 31's length and buckle position according to different requirements, and the convenience is fixed to the installation of bluetooth antenna.
The antenna radiation unit 22 is vertically arranged on the PCB 21, and the antenna radiation unit 22 is vertically arranged on the PCB 21, so that the efficiency is higher, and the size is smaller; a bending part 222 is arranged on the radiation arm of the inverted-F radiation piece 221, and the radiation arm adopts a bending design, so that the distributed capacitance of the antenna is increased, the Q value is reduced, the bandwidth of the antenna is increased, and the size of the antenna can be reduced; a first positioning hole 211 is formed in the PCB 21, and a first positioning post 111 matched with the first positioning hole 211 is correspondingly formed in the base 11; a clamping buckle 121 is arranged on the top cover 12, a clamping block 112 matched with the clamping buckle 121 is arranged at a corresponding position on the base 11, and the top cover 12 is clamped with the base 11 in a matching manner; the base 11 is provided with a second positioning hole 113 and a second mounting hole 114, and the base 11 is provided with the second positioning hole 113 and the second mounting hole 114, so that the whole bluetooth antenna can be conveniently mounted in a vehicle.
The utility model provides a vehicle-mounted Bluetooth antenna, antenna radiation unit adopt the symmetrical overall arrangement of type of falling F radiation piece to lead to earth connection, feeder line and radiation arm on both sides with the metallized via hole, form spatial structure's PIFA, can effectively improve the radiation efficiency of Bluetooth antenna; the antenna radiation unit is vertically arranged on the PCB, so that the efficiency is higher and the size is smaller; the radiating arm adopts the bending design, increases the distributed capacitance of the antenna, reduces the Q value, thereby increasing the bandwidth of the antenna and simultaneously reducing the size of the antenna.
As described above, the above embodiments are not limiting embodiments of the present invention, and modifications or equivalent variations made by those skilled in the art based on the substance of the present invention are within the technical scope of the present invention.
Claims (6)
1. The utility model provides a bluetooth on-vehicle antenna, its characterized in that, includes bluetooth antenna module, bluetooth antenna module includes:
the outer shell (1) comprises a base (11) and a top cover (12) covering the base (11), and an accommodating cavity is formed between the top cover (12) and the base (11);
a PCBA component (2), the PCBA component (2) being disposed within the receiving cavity, the PCBA component (2) comprising a PCB board (21) and an antenna radiating element (22) disposed on the PCB board (21); the antenna radiation unit (22) comprises two inverted-F radiation pieces (221) which are symmetrically arranged, and the two inverted-F radiation pieces (221) are conducted through metalized through holes;
coaxial cable subassembly (3), coaxial cable subassembly (3) include Fakra connector (32), coaxial line (31) and fixed buckle (33), the one end of coaxial line (31) with PCB board (21) link to each other, the other end of coaxial line (31) with Fakra connector (32) link to each other.
2. A vehicle bluetooth antenna according to claim 1, characterized in that the antenna radiating element (22) is mounted vertically on the PCB board (21).
3. The vehicle-mounted Bluetooth antenna of claim 1, wherein a bending part (222) is arranged on the radiation arm of the inverted-F radiation piece (221).
4. The vehicle-mounted Bluetooth antenna of claim 1, wherein a first positioning hole (211) is formed in the PCB (21), and a first positioning column (111) matched with the first positioning hole (211) is correspondingly formed in the base (11).
5. The vehicle-mounted Bluetooth antenna of claim 1, wherein a clamping buckle (121) is arranged on the top cover (12), a clamping block (112) matched with the clamping buckle (121) is arranged at a corresponding position on the base (11), and the top cover (12) is clamped with the base (11) in a matching manner.
6. A vehicle bluetooth antenna according to claim 1, characterized in that the base (11) is provided with a second positioning hole (113) and a mounting hole (114).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120450604.1U CN214336917U (en) | 2021-03-02 | 2021-03-02 | Vehicle-mounted Bluetooth antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120450604.1U CN214336917U (en) | 2021-03-02 | 2021-03-02 | Vehicle-mounted Bluetooth antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214336917U true CN214336917U (en) | 2021-10-01 |
Family
ID=77884693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120450604.1U Active CN214336917U (en) | 2021-03-02 | 2021-03-02 | Vehicle-mounted Bluetooth antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214336917U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024008202A1 (en) * | 2022-07-06 | 2024-01-11 | 万通智控科技股份有限公司 | Antenna structure and tpms bluetooth sensor comprising said antenna structure |
-
2021
- 2021-03-02 CN CN202120450604.1U patent/CN214336917U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024008202A1 (en) * | 2022-07-06 | 2024-01-11 | 万通智控科技股份有限公司 | Antenna structure and tpms bluetooth sensor comprising said antenna structure |
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