CN216488496U

CN216488496U - Antenna assembly

Info

Publication number: CN216488496U
Application number: CN202123297992.3U
Authority: CN
Inventors: 李永波
Original assignee: Jiangsu Jiahua Communication Technology Co ltd
Current assignee: Jiangsu Jiahua Communication Technology Co ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-05-10
Anticipated expiration: 2031-12-24

Abstract

The utility model provides an antenna module, including the shell and install in the antenna of shell, the antenna include the base plate and connect in the sheetmetal of base plate, the base plate be equipped with the coaxial ground end of presenting and through the coaxial line with the coaxial feed end that is connected of ground end of presenting, the inside radio frequency signal of shell by the coaxial line is introduced the feed end. The utility model discloses the antenna module is through setting up the base plate on the antenna to set up the feed end on the base plate, will the inside radio frequency signal of shell is introduced the feed end, and then transmits the surface of first irradiator. The antenna assembly is small in size, small in occupied space of the whole antenna, simple in structure, convenient to assemble and good in antenna performance.

Description

Antenna assembly

Technical Field

The utility model relates to the field of antenna technology, especially, relate to an antenna module.

Background

The 5G communication technology has a faster propagation rate but a narrower coverage than the 4G communication technology. Therefore, signal reinforcement is required by small cell equipment in addition to macro cell coverage, and currently, small cells are widely applied to dense user areas and indoor environments. The method has the advantages of low transmitting power, small volume, convenience in installation and the like, can share the network load of a macro base station, improves the channel capacity, solves the blind spot problem of signal coverage, and becomes one of the mainstream modes of indoor 5G signal deployment at present.

The antenna, the radio frequency processing element and the baseband processing unit are integrated in a small space of the current 5G small base station, so that the installation is very convenient, but due to the particularity of a use scene, the appearance of the base station needs to be small enough, which causes great trouble to the design of the antenna. Obviously, the conventional base station antenna cannot be applied to a 5G small base station due to its large size, and especially for the low frequency antenna, the low frequency antenna usually covers a lower frequency and needs a larger size.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a miniaturized requirement and satisfy the antenna module that communication performance required. In order to achieve the above purpose, the utility model adopts the following technical scheme:

an antenna assembly comprises a shell and an antenna installed on the shell, wherein the antenna comprises a substrate and a metal sheet connected to the substrate, the substrate is provided with a coaxial ground feeding end and a feeding end connected with the coaxial ground feeding end through a coaxial line, and radio-frequency signals inside the shell are introduced into the feeding end through the coaxial line.

As the utility model discloses further modified technical scheme, the sheetmetal include first irradiator and with the second irradiator of first irradiator coupling, first irradiator with feed end connects, the base plate still is equipped with the weld end, the second irradiator with the weld end links to each other.

As a further improved technical solution of the present invention, the first radiator and the second radiator are arranged in parallel.

As the utility model discloses further modified technical scheme, first irradiator is equipped with respectively from its lateral wall downwardly extending and presents lower margin and present the feed foot, present the feed foot with feed end connects, still be equipped with on the base plate with present the ground end of presenting that the lower margin links to each other.

As a further improved technical scheme of the utility model, feed the electricity foot with it forms the opening orientation to feed between the lower margin the fluting of base plate.

As a further improved technical scheme of the utility model, the plane at fluting both sides wall place is parallel to each other and perpendicular to the plane at base plate place.

As a further improved technical solution of the present invention, the base plate is substantially triangular plate-shaped and is provided with a screw hole for fixedly connecting with the housing.

As a further improved technical solution of the present invention, the antenna further includes a support connected to the metal plate, the bottom surface of the support and the bottom surface of the substrate are located on the same plane.

As the utility model discloses further modified technical scheme, be equipped with first spliced pole and second spliced pole on the support, first spliced pole with first irradiator is connected, the second spliced pole with second irradiator is connected.

As a further improved technical scheme of the utility model, the base plate with the plane at the adjacent both sides wall place of support is parallel to each other.

Compared with the prior art, the utility model discloses the antenna module is through setting up the base plate on the antenna to set up the feed end on the base plate, will the inside radio frequency signal of shell is introduced the feed end, and then transmit to the surface of first irradiator. The antenna assembly is small in size, small in occupied space of the whole antenna, simple in structure, convenient to assemble and good in antenna performance.

Drawings

Fig. 1 is a schematic perspective view of an antenna in the antenna assembly of the present invention;

FIG. 2 is a schematic perspective view of FIG. 1 at another angle;

fig. 3 is a schematic perspective view of the antenna assembly of the present invention;

FIG. 4 is a graph of voltage standing wave ratio within the working frequency band of the antenna assembly of the present invention;

fig. 5 is the horizontal plane directional diagram in the working frequency band of the antenna assembly of the present invention.

Reference numerals: a substrate-1; a coaxial ground feed terminal-2; a screw hole-3; a feed end-4; a ground feed terminal-5; welding the end-6; a first radiator-7; a second radiator-8; a feed foot-9; a feed pin-10; a first connecting column-11 a; a second connecting column-11 b; a support-12; a housing-13.

Detailed Description

Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings. If several embodiments exist, the features of these embodiments may be combined with each other without conflict. When the description refers to the accompanying drawings, the same numbers in different drawings represent the same or similar elements, unless otherwise specified. The description set forth below in the exemplary detailed description does not represent all embodiments consistent with the present invention; rather, they are merely examples of apparatus, products, and/or methods consistent with certain aspects of the invention, as recited in the claims of the invention.

The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in the specification and claims of this application, the singular form of "a", "an", or "the" is intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the terms "first," "second," and the like as used in the description and in the claims of the present invention do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms a, an, etc. do not denote a limitation of quantity, but rather denote the presence of at least one. Unless otherwise indicated, the terms "front," "back," "up," "down," and the like in the description of the invention are used for convenience of description and are not limited to a particular position or spatial orientation. The word "comprise" or "comprises", and the like, is an open-ended expression meaning that an element that precedes "includes" or "comprising" includes "that the element that follows" includes "or" comprises "and its equivalents, that do not preclude the element that precedes" includes "or" comprising "from also including other elements. If the utility model discloses in appear "a plurality of", its meaning indicates two and more than two.

Referring to fig. 1 to 5, the present invention provides an antenna assembly, which includes a housing 13 and an antenna mounted on the housing 13, wherein the antenna includes a substrate 1, a metal sheet connected to the substrate 1, and a bracket 12 connected to the metal sheet.

Referring to fig. 1, the substrate 1 is substantially triangular plate-shaped, has a thickness of 1.2mm, and has copper-clad layers on both upper and lower surfaces thereof. The base plate is provided with a screw hole 3 which is used for being fixedly connected with the shell 13 from the upper wall to the lower wall in a penetrating way.

The substrate 1 is provided with a coaxial ground feeding end 2, a feed end 4 connected with the coaxial ground feeding end 2, a ground feeding end 5 and a welding end 6 which are recessed downwards from the upper wall of the substrate. The coaxial ground feeding end 2 and the feeding end 4 are connected through a coaxial line.

The metal sheet includes a first radiator 7 and a second radiator 8 coupled to the first radiator 7, and the second radiator 8 is disposed on one side of the first radiator 7. The first radiator 7 is provided with a first body part, the second radiator is provided with a second body part, and the first body part and the second body part are arranged in parallel and have a certain interval.

Referring to fig. 1 and 2, a feeding leg 9 and a feeding leg 10 are respectively disposed to extend downward from the side wall of the first body, the feeding leg 10 is connected to the feeding end 4, and the feeding leg 10 is connected to the feeding end 5; and bending downwards from one end of the upper wall of the second body part to form a bent part, wherein the bent part is connected with the welding end 6. And the feed pin 10, the feed foot 9 and the bending part are all positioned on the same side of the metal sheet.

In detail, orthographic projections of the first body part and the second body part on respective planes in the vertical direction and the base plate 1 are parallel to each other, and a distance between a lower surface of the first body part and a lower surface of the second body part and an upper surface of the base plate 1 is 10 mm.

Referring to fig. 1, a slot with an opening facing the substrate 1 is formed between the feeding pin 10 and the feeding foot 9, planes of two side walls of the slot are parallel to each other and perpendicular to a plane of the substrate 1, and specifically, the slot is n-shaped. The size of the slot can be changed, and the current path from the feed pin 10 to the feed foot pin 9 can be changed by changing the size of the slot, so that the standing wave of the antenna can be adjusted.

In this embodiment, the rf signal inside the housing 13 is introduced to the position of the feeding end 4 by the coaxial line, and is finally transmitted to the surface of the first radiator 7.

Because the first radiator 7 and the second radiator 8 are coupled with each other and the current directions are consistent, additional resonance can be excited, and the bandwidth of the antenna assembly can cover the whole working frequency band.

Referring to fig. 2 to 3, the bracket 12 is mounted to the housing 13, specifically, the bracket 12 is connected to the housing 13 by screws, and in other embodiments, the bracket 12 may also be connected to the housing 13 by bolts or other fasteners.

Referring to fig. 2, the support 12 is connected to the metal sheet, and specifically, the support 12 is provided with a plurality of first connection pillars 11a and a plurality of second connection pillars 11b, the first body portion of the first radiator 7 is provided with a plurality of first through holes, and the second body portion of the second radiator 8 is provided with a plurality of second through holes. The first connecting posts 11a correspond to the first through holes one by one and penetrate through the first through holes, so that the first radiator 7 is fixedly connected with the bracket 12; the second connecting posts 11b correspond to the second through holes one by one and penetrate through the second through holes, so that the second radiator 8 is fixedly connected with the support 12. So arranged, the relative position of the first radiator 7 and the second radiator 8 is fully defined, stabilizing the performance of the antenna.

The planes of the two adjacent side walls of the support 12 and the substrate 1 are parallel to each other, and the bottom surface of the support 12 and the bottom surface of the substrate 1 are located on the same plane. The bottom surface of the bracket 12 completely abuts against the upper surface of the housing 13, and is arranged such that the distance between the lower surface of the first body portion and the lower surface of the body portion to the upper surface of the housing 13 is further limited, thereby further stabilizing the performance of the antenna.

Fig. 4 is a voltage standing wave ratio diagram of the antenna assembly of the present invention in the working frequency band, and the result shows that the voltage standing wave ratio is less than 2.1 in the whole working frequency band (703-803 MHz).

Fig. 5 shows the horizontal plane (Theta ═ 90deg) directional diagram of the antenna assembly of the present invention in the working frequency band, and the result shows that the omnidirectional directivity of the antenna is better and there is no significant recess in the whole working frequency band (703-.

To sum up, the utility model discloses the antenna module is through setting up the base plate on the antenna to set up the feed end on the base plate, will the inside radio frequency signal of shell 13 is introduced feed end 4, and then transmits to the surface of first irradiator 7. The antenna assembly is small in size, small in occupied space of the whole antenna, simple in structure, convenient to assemble, good in antenna performance, low in cost and easy to produce in batches.

The above embodiments are only used for illustrating the present invention and not for limiting the technical solutions described in the present invention, and the understanding of the present specification should be based on the technical people in the related art, for example, the descriptions of the directions such as "front", "back", "left", "right", "up", "down", etc., although the present specification has described the present invention in detail with reference to the above embodiments, the ordinary skilled in the art should understand that the technical people in the related art can still modify or substitute the present invention, and all the technical solutions and modifications thereof that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. An antenna assembly, characterized by: the antenna comprises a shell (13) and an antenna installed on the shell (13), wherein the antenna comprises a substrate (1) and a metal sheet connected to the substrate (1), the substrate (1) is provided with a coaxial ground feeding end (2) and a feeding end (4) connected with the coaxial ground feeding end (2) through a coaxial line, and a radio-frequency signal inside the shell (13) is introduced into the feeding end (4) through the coaxial line.

2. The antenna assembly of claim 1, wherein: the metal sheet comprises a first radiating body (7) and a second radiating body (8) coupled with the first radiating body (7), the first radiating body (7) is connected with the feed end (4), the substrate (1) is further provided with a welding end (6), and the second radiating body (8) is connected with the welding end (6).

3. The antenna assembly of claim 2, wherein: the first radiator (7) and the second radiator (8) are arranged in parallel.

4. The antenna assembly of claim 2, wherein: the first radiating body (7) extends downwards from the side wall of the first radiating body and is provided with a feed foot (9) and a feed foot (10), the feed foot (10) is connected with the feed end (4), and the substrate (1) is further provided with a ground feed end (5) connected with the feed foot (9).

5. The antenna assembly of claim 4, wherein: a slot with an opening facing the substrate (1) is formed between the feeding pin (10) and the feeding foot pin (9).

6. The antenna assembly of claim 5, wherein: the planes of the two side walls of the groove are parallel to each other and perpendicular to the plane of the substrate (1).

7. The antenna assembly of claim 1, wherein: the base plate (1) is roughly in a triangular plate shape and is provided with a screw hole (3) which is fixedly connected with the shell (13).

8. The antenna assembly of claim 2, wherein: the antenna further comprises a support (12) connected with the metal sheet, and the bottom surface of the support (12) and the bottom surface of the substrate (1) are located on the same plane.

9. The antenna assembly of claim 8, wherein: be equipped with first spliced pole (11a) and second spliced pole (11b) on support (12), first spliced pole (11a) with first irradiator (7) is connected, second spliced pole (11b) with second irradiator (8) are connected.

10. The antenna assembly of claim 8, wherein: the planes of the two adjacent side walls of the substrate (1) and the support (12) are parallel to each other.