CN218586354U

CN218586354U - Antenna feed network assembly based on air microstrip line

Info

Publication number: CN218586354U
Application number: CN202222917732.XU
Authority: CN
Inventors: 何军; 胡坚泰; 吕润; 姚想喜
Original assignee: Tongyu Communication Inc
Current assignee: Tongyu Communication Inc
Priority date: 2022-11-03
Filing date: 2022-11-03
Publication date: 2023-03-07
Anticipated expiration: 2032-11-03

Abstract

The utility model provides an antenna feed network subassembly based on air microstrip line, is equipped with the PCB board that the feed network walked the line including ground plate and one side set up the one side that the feed network walked the line on the PCB board avoid the position that the feed network walked the line, correspond the welding through a plurality of table pastes the pad and have a plurality of table that thickness is the same to paste the spacing block, and the ground plate sets up with laminating mutually with a plurality of table pastes the spacing block on the PCB board, and the ground plate, table paste spacing block and PCB board pass through rivet or screw fixed connection. Can guarantee that the feed network walks the difference in height stability between line and the ground plate, improve the performance of feed network and the qualification rate of product, can improve moreover by a wide margin the utility model discloses assembly efficiency in making the application, reduction in production cost.

Description

Antenna feed network assembly based on air microstrip line

Technical Field

The utility model belongs to the technical field of communication antenna, specifically speaking is an antenna feed network subassembly based on air microstrip line.

Background

Antenna feed networks are commonly used to connect several radiating elements of an array antenna. The common feed network PCB is a double-sided copper-clad plate made by coating copper on two sides of a dielectric substrate, the front side of the dielectric substrate is provided with power distribution network (feed network) wiring, and the back side is provided with a ground plate.

In a common feed network PCB, the dielectric substrate material itself has a corresponding dielectric constant (usually 3.0) and tangent loss, so that the antenna feed network has a certain loss. The dielectric constant of the expected dielectric substrate in the air microstrip line feed network is the same as the dielectric constant of air, so that the dielectric substrate between the feed network wiring and the ground plate needs to be removed, an air layer with a certain height exists between the feed network wiring and the ground plate, the equivalent dielectric constant of the air microstrip line feed network is close to the dielectric constant of air 1, and the loss of the feed network can be reduced. However, in the air microstrip line feed network, if the height difference between each part of the feed network trace and the ground plate is different, the consistency between the amplitude and the phase of the ports at the tail end of the feed network is affected, the directional diagram of the antenna is deteriorated, and the consistency of the directional diagrams of each port of the array antenna is affected.

In order to keep the height difference between the feed network trace and the ground plate stable, in the prior art, a full-face gasket (with a gap for avoiding the network trace) is independently arranged on one face of the dielectric substrate, which is provided with the feed network trace, and then the gasket is bonded around the dielectric substrate, and then the ground plate is fixedly connected with the dielectric substrate. This structure has the following disadvantages:

1) The whole gasket has larger area, needs additional manufacture, has high cost and is difficult to ensure the height uniformity.

2) When the annular gasket is bonded with the dielectric substrate, uniform smearing of the adhesive is not easy to guarantee, and the consistency of the air height between the feed network wiring and the grounding plate is further influenced.

3) The integral annular gasket is easy to deform and displace, and the height of the air layer is also influenced to be inconsistent.

The feed network component with the structure can not ensure the height of a large area in the middle, and local deformation can be caused to influence the service performance of the feed network.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an antenna feed network subassembly based on air microstrip line.

In order to realize the purpose, the utility model discloses the technical scheme who adopts is: the utility model provides an antenna feed network subassembly based on air microstrip line, includes that ground plate and one side are equipped with the PCB board that the feed network walked the line one side of setting up the feed network on the PCB board avoids the position that the feed network walked the line, corresponds the welding through a plurality of table pastes the pad and has a plurality of table pastes the spacer that the thickness is the same, and the ground plate sets up with laminating mutually with a plurality of table pastes the spacer on the PCB board, and the ground plate passes through rivet or screw fixed connection with the PCB board, table pastes the spacer.

Preferably, the surface-mounted bonding pad is obtained by reserving a copper-clad layer on the PCB in the process of obtaining the feed network wiring by etching.

Furthermore, the outer contours of the top views of the surface-mounted isolating sheet and the surface-mounted bonding pad are both circular.

Furthermore, the surface-mounted isolating sheet is made of a single-sided copper-clad PCB or a metal material.

Has the advantages that:

according to the utility model, a plurality of surface-mounted spacers with the same thickness are correspondingly welded on the PCB board through a plurality of surface-mounted bonding pads, the PCB board is fixedly connected with the surface-mounted spacers on the grounding plate through rivets or screws after being bonded, the positions and the number of the surface-mounted spacers can be flexibly arranged as required, and the stability and the non-deformation of the whole feed assembly are facilitated; the table pastes the spacing block simultaneously through with table subsides pad welding and PCB board fixed connection, not only can guarantee that the feed network walks the difference in height between line and the ground plate and remain stable, improves the performance of feed network, promotes the qualification rate of product, can improve moreover by a wide margin the utility model discloses assembly efficiency in making the application, reduction in production cost.

In further preferred embodiment, the table pastes the pad and is reserved the gained at the sculpture acquisition feed network in-process of walking the line by the copper layer that covers on the PCB board, can further improve the utility model discloses assembly efficiency in making the application, reduction in production cost.

Drawings

Fig. 1 is a schematic view of the exploded structure of the present invention.

Fig. 2 is a front view of the present invention.

Fig. 3 is a side view of fig. 2.

The labels in the figure are: 1. PCB board, 2, feed network line, 3, table subsides pad, 4, table subsides spacing block, 5, ground plate, 6, rivet.

Detailed Description

The following detailed description of the present invention is provided with reference to the accompanying drawings and examples, but not to be construed as limiting the present invention in any way.

Referring to the attached drawings, the antenna feed network component based on the air microstrip line comprises a ground plate 5 and a PCB 1, wherein a feed network line 2 is arranged on one side of the PCB 1, the position of the feed network line is avoided on the side where the feed network line 2 is arranged on the PCB, a plurality of surface-mounted isolation sheets 4 with the same thickness are correspondingly welded on the PCB 1 through a plurality of surface-mounted pads 3, the ground plate 5 is attached to the surface-mounted isolation sheets 4 arranged on the PCB 1, and the ground plate 5, the surface-mounted isolation sheets 4 and the PCB 1 are mutually connected and fixed through rivets 6 or screws.

Through above technical scheme, because the position and the quantity of table subsides spacer 4 can carry out the overall arrangement as required to table subsides spacer 4 and PCB board 1's table pad 3 welded connection, thereby can guarantee that the feed network walks the difference in height between line 2 and the ground plate 5 and remain stable, improve the performance of feed network, promote the qualification rate of product, and can improve by a wide margin the utility model discloses assembly efficiency in manufacturing and using, reduction in production cost

In this embodiment, it is preferred table pastes pad 3 obtains the in-process reservation gained of feed network line by the copper layer that covers on PCB board 1 at the sculpture, and such mode of setting can further improve the utility model discloses assembly efficiency in making the application, reduction in production cost.

Specifically, the surface-mounted spacer 4 and the surface-mounted pad 3 may be solder-connected using solder paste.

In this embodiment, the outer contours of the surface mount spacer 4 and the surface mount pad 3 in the top view are both circular.

The surface-mounted isolating sheet 4 can be made of a single-sided copper-clad PCB or a metal material. When the surface-mounted isolating sheet 4 is a single-sided copper-clad PCB, the copper-clad side of the surface-mounted isolating sheet 4 can be connected with the surface-mounted bonding pad in a welding manner.

The height of the surface-mounted isolating sheet 4 needs to meet the requirement that the distance between the opposite surfaces of the feed network routing 2 and the grounding plate 5 is the required preset distance after the grounding plate 5, the surface-mounted isolating sheet 4 and the PCB 1 are connected.

In the preferred scheme of this embodiment, because the table of adoption pastes pad 3 and the power feed network is walked line 2 and is all adopted the copper layer sculpture and get, consequently it has the same thickness, and all table pastes spacing block 4 also adopts the same thickness, consequently adopts the utility model discloses a scheme can obtain highly uniform stable air bed to improve the performance of power feed network.

Additionally, because the utility model discloses in, table pastes spacer 4 mutually independent, table pastes pad 3 and table pastes spacer 4's welding position as long as avoid feed network walk the line can, consequently has more nimble position overall arrangement to can avoid the large tracts of land not to appear in the blank position of table pasting spacer 4, it is less to walk the overall arrangement restriction of line 2 to feed network, is difficult for appearing ground plate 5 and is pressed the deformation and influence the uniformity of air bed height, has further guaranteed the utility model discloses a reliability.

Because the utility model discloses in, table pastes spacing block 4 is through table pad 3 welded fastening on PCB board 1, consequently is riveting or the in-process of screw connection with ground plate 5 and PCB board 1, when inserting rivet or screw in the mounting hole that runs through the three, the emergence of table pastes spacing block 4 aversion phenomenon can not appear, has improved greatly the utility model discloses an installation rate is favorable to large batch production, can improve production efficiency.

Parts not described in detail herein are prior art.

The above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same, and it should be understood by those of ordinary skill in the art that the embodiments of the present invention can be modified or replaced with equivalents with reference to the above embodiments, and any modifications or equivalent substitutions which do not depart from the spirit and scope of the present invention are intended to be covered by the claims which are appended hereto.

Claims

1. The utility model provides an antenna feed network subassembly based on air microstrip line which characterized in that: PCB board (1) of walking line (2) is equipped with the feed network including ground plate (5) and one side PCB board (1) the position that sets up one side that the feed network walked line (2) on PCB board (1) and avoid feed network to walk line (2) has a plurality of thickness the same table to paste spacing block (4) through a plurality of table pad (3) corresponding welding, and ground plate (5) and PCB board (1) on a plurality of table paste spacing block (4) laminate mutually and set up, ground plate (5), table paste spacing block (4) and PCB board (1) pass through rivet or screw fixed connection.

2. An antenna feed network assembly based on air microstrip lines according to claim 1 characterised in that: the surface-mounted bonding pad (3) is obtained by reserving a copper-coated layer on the PCB (1) in the process of obtaining the feed network wiring (2) through etching.

3. An antenna feed network assembly based on air microstrip lines according to claim 2 characterised in that: the outer contours of the top views of the surface-mounted isolating sheet (4) and the surface-mounted bonding pad (3) are circular.

4. An antenna feed network assembly based on air microstrip lines according to any of claims 1-3, characterised in that: the surface-mounted isolating sheet (4) is made of a single-sided copper-clad PCB or a metal material.