CN215008571U

CN215008571U - Low-profile GNSS antenna

Info

Publication number: CN215008571U
Application number: CN202120401743.5U
Authority: CN
Inventors: 付新林
Original assignee: Shenzhen Surbaner Technology Co ltd
Current assignee: Shenzhen Surbaner Technology Co ltd
Priority date: 2021-02-24
Filing date: 2021-02-24
Publication date: 2021-12-03
Anticipated expiration: 2031-02-24

Abstract

The utility model discloses a low section GNSS antenna in antenna technical field, include: an upper cover; a transmission line installed at a side of the upper cover; an antenna assembly mounted within a bottom recess of the upper cover, the antenna assembly connected to the transmission line; a shield mounted to a bottom of the antenna assembly, the shield being within a bottom recess of the upper cover; a lower cover mounted on a bottom of the upper cover, a top of the lower cover being in contact with a bottom of the shield case, the antenna assembly comprising: a PCB board; the circuit is arranged on the periphery of the front surface of the PCB; antenna ground, antenna ground sets up the front surface top of PCB board, the utility model discloses product thickness is little, can use the restricted occasion in high space, has the omnidirectional radiation characteristic, need not consider the direction during installation, can not cause the problem of signal weak because of installation angle, low in manufacturing cost.

Description

Low-profile GNSS antenna

Technical Field

The utility model relates to an antenna technology field specifically is a low section GNSS antenna.

Background

An antenna is a transducer that converts a guided wave propagating on a transmission line into an electromagnetic wave propagating in an unbounded medium (usually free space) or vice versa. A component for transmitting or receiving electromagnetic waves in a radio device. Engineering systems such as radio communication, broadcasting, television, radar, navigation, electronic countermeasure, remote sensing, radio astronomy and the like all use electromagnetic waves to transmit information and work by depending on antennas. In addition, in transferring energy with electromagnetic waves, non-signal energy radiation also requires antennas. The antennas are generally reciprocal in that the same pair of antennas can be used as both transmit and receive antennas. The same antenna is the same as the basic characteristic parameter for transmission or reception. This is the reciprocity theorem for antennas.

The reading distance of the ceramic antenna can reach 2 meters generally, the ceramic antenna is called a short-distance antenna because the reading distance is short, the gain of the antenna is 2dbi, the ceramic antenna is an indoor industrial product, and the ceramic antenna adopts a ceramic shell and has the capabilities of resisting interference, thunder and water and dust.

The smaller the electronic product is, the thinner the electronic product is, the traditional ceramic antenna cannot be applied to a product with space limitation due to thickness, and the ceramic antenna has stronger directivity and has requirements on the installation direction.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a low section GNSS antenna to solve traditional ceramic antenna who proposes in the above-mentioned background art because the thickness reason can't be used to the product that has the space restriction, ceramic antenna has stronger directive property, has the problem of requirement to the installation direction.

In order to achieve the above object, the utility model provides a following technical scheme: a low-profile GNSS antenna comprising:

an upper cover;

a transmission line installed at a side of the upper cover;

an antenna assembly mounted within a bottom recess of the upper cover, the antenna assembly connected to the transmission line;

a shield mounted to a bottom of the antenna assembly, the shield being within a bottom recess of the upper cover;

and the lower cover is arranged at the bottom of the upper cover, and the top of the lower cover is in contact with the bottom of the shielding case.

Preferably, the antenna assembly includes:

a PCB board;

the circuit is arranged on the periphery of the front surface of the PCB;

an antenna ground disposed on top of the front surface of the PCB, the antenna ground being connected to the line;

two resonant frequency adjusting modules, two resonant frequency adjusting modules isosceles setting is in the front surface upper left corner of PCB board.

Preferably, the front surface of the PCB board is further provided with an LNA module.

Preferably, two resonance frequency adjusting modules can be arranged in a bilateral symmetry mode, arranged up and down, arranged in an isosceles left lower corner, arranged in an isosceles right lower corner and arranged in an isosceles right upper corner.

Preferably, the PCB board may be circular or rectangular or polygonal.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses product thickness is little, can use the restricted occasion in high space, has the omnidirectional radiation characteristic, need not consider the direction during installation, can not cause the problem of signal debility because of installation angle, low in manufacturing cost.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural diagram of an antenna assembly of the present invention;

FIG. 3 is a schematic view of the PCB and LNA module according to the present invention;

FIG. 4 is a schematic diagram of the structure of the resonance frequency adjusting module of the present invention;

FIG. 5 is a schematic view of the structure of the resonant frequency adjusting module according to the present invention;

fig. 6 is a schematic view of the structure of the lower left corner of the resonant frequency adjusting module of the present invention;

fig. 7 is a schematic view of the structure of the lower right corner of the resonant frequency adjusting module of the present invention;

fig. 8 is the utility model discloses resonant frequency adjusts module upper right corner and sets up the schematic diagram.

In the figure: 100 upper cover, 200 transmission line, 300 antenna assembly, 310PCB board, 320 line, 330 antenna ground, 340 resonant frequency adjustment module, 350LNA module, 400 shield, 500 lower cover.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a low section GNSS antenna, product thickness is little, can use the restricted occasion in high space, has the omnidirectional radiation characteristic, need not consider the direction during installation, can not cause the problem of signal weak because of installation angle, low in manufacturing cost please refer to fig. 1, include: the upper cover 100, the transmission line 200, the antenna assembly 300, the shield case 400, and the lower cover 500;

referring to fig. 1 again, the upper cover 100 is made of polymer material, and the upper cover 100 is circular, rectangular or polygonal;

referring to fig. 1 again, the transmission line 200 is installed on the side surface of the upper cover 100, and one end of the transmission line 200 penetrates through the inner side surface of the upper cover 100;

referring to fig. 1-8, an antenna assembly 300 is mounted in a bottom recess of the upper cover 100, the antenna assembly 300 is connected to the transmission line 200, and the antenna assembly 300 includes:

the PCB 310 is installed in the inner cavity of the upper cover 100, the PCB 310 and one end of the transmission line 200 penetrating through the inner side of the upper cover 100 are welded together, the front surface of the PCB 310 is further provided with the LNA module 350 to form an active PCB, otherwise, the PCB is a passive PCB, and the PCB 310 may be circular, rectangular or polygonal;

the wiring 320 is disposed around the front surface of the PCB 310;

the antenna ground 330 is disposed on top of the front surface of the PCB 310, the antenna ground 330 being connected with the line 320;

the two resonance frequency adjusting modules 340 are arranged at the upper left corner of the front surface of the PCB 310 in an isosceles manner, and the two resonance frequency adjusting modules 340 can be arranged in a left-right symmetrical manner, in an up-down manner, in a left-lower corner in an isosceles manner, in a right-lower corner in an isosceles manner and in a right-upper corner in an isosceles manner;

referring again to fig. 1, the shield 400 is mounted on the bottom of the antenna assembly 300, and the shield 400 is disposed in a recess on the bottom of the top cover 100;

referring again to fig. 1, the lower cover 500 is mounted on the bottom of the upper cover 100, and the top of the lower cover 500 contacts the bottom of the shield can 400.

While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the various features of the disclosed embodiments of the present invention can be used in any combination with each other, and the description of such combinations is not exhaustive in the present specification only for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. A low-profile GNSS antenna, comprising: the method comprises the following steps:

an upper cover (100);

a transmission line (200), the transmission line (200) being installed at a side of the upper cover (100);

an antenna assembly (300), the antenna assembly (300) being mounted within a bottom recess of the upper cover (100), the antenna assembly (300) being connected to the transmission line (200);

a shield (400), the shield (400) mounted to a bottom of the antenna assembly (300), the shield (400) within a bottom recess of the upper cover (100);

a lower cover (500), the lower cover (500) being mounted on the bottom of the upper cover (100), the top of the lower cover (500) being in contact with the bottom of the shield can (400).

2. The low-profile GNSS antenna of claim 1, wherein: the antenna assembly (300) comprises:

a PCB board (310);

a trace (320), the trace (320) disposed around a front surface of the PCB board (310);

an antenna ground (330), the antenna ground (330) being disposed on top of a front surface of the PCB board (310), the antenna ground (330) being connected with the line (320);

two resonance frequency adjusting modules (340), wherein the two resonance frequency adjusting modules (340) are arranged at the upper left corner of the front surface of the PCB (310) in an isosceles manner.

3. The low-profile GNSS antenna of claim 2, wherein: the front surface of the PCB (310) is also provided with an LNA module (350).

4. The low-profile GNSS antenna of claim 2, wherein: two resonant frequency adjustment module (340) can bilateral symmetry set up, set up from top to bottom, lower left corner isosceles arrangement, lower right corner etc. will set up with upper right corner isosceles arrangement.

5. The low-profile GNSS antenna of claim 2, wherein: the PCB board (310) may be circular or rectangular or polygonal.