CN106207438B - Fourth-generation high-gain broadband LTE built-in antenna and construction method - Google Patents
Fourth-generation high-gain broadband LTE built-in antenna and construction method Download PDFInfo
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Abstract
The invention relates to a fourth generation high-gain broadband LTE built-in antenna, which is characterized in that a pair of antennas are divided into two parts by utilizing the characteristics and the production technology of a PCB double-sided copper-clad plate and are arranged on the top layer and the bottom layer of a rectangular PCB double-sided copper-clad plate with the size of 110mm multiplied by 26mm multiplied by 0.8mm; compared with the prior art, the invention has the following three main beneficial effects: firstly, the volume is smaller, and the size is only 110 multiplied by 26 multiplied by 0.8mm; secondly, the frequency bandwidth meets the requirements of all 4G frequency bands; thirdly, the performance can completely meet the requirements.
Description
Technical Field
The invention relates to a broadband built-in antenna technology manufactured by a PCB (printed circuit board), in particular to a fourth-generation high-gain broadband LTE (long term evolution) built-in antenna and a forming method thereof.
Background
In the prior art, there are three outstanding problems in using a PCB to manufacture a fourth generation high-gain wideband LTE internal antenna: firstly, the volume is large, and a large amount of space is occupied; secondly, the frequency bandwidth is narrow; thirdly, the performance index can not meet the requirement.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a broadband LTE (Long Term Evolution) built-in antenna and a construction method thereof, which are realized by the following technical scheme.
The method for forming the fourth generation high-gain broadband LTE built-in antenna comprises the following steps:
(1) manufacturing an antenna board, wherein the antenna board is a rectangular PCB double-sided copper-clad plate with the thickness of 110mm multiplied by 26mm and the thickness of the board is 0.8mm; setting one copper-clad plate surface of the antenna plate as a top layer and the other copper-clad plate surface as a bottom layer;
(2) drawing a basic graph of the antenna board top layer printed layout:
four corners of the antenna board are fillets with the radius of 2 mm;
the two process holes with the diameter of 3.1mm are symmetrically arranged on two sides of the center line of the antenna plate in the length direction on the center line of the antenna plate in the width direction, and the center distance is 86mm;
the two process holes with the diameter of 2mm are symmetrically arranged on two sides of the central line of the antenna plate in the length direction on the central line of the antenna plate in the width direction at the center of the process hole with the diameter of 2mm, and the center distance is 76mm;
the antenna plate comprises three rows and seven columns, twelve circular holes with the diameter of 0.6mm are formed in the three rows and the seven columns, five rows are formed in the first row and the second row, and the central connecting line of the holes in the first row is 1.5mm away from the right end of the antenna plate from right to left; the distance between the central connecting line of the first row of holes and the central connecting line of the second row of holes is 7mm; the distances between the connecting line of the centers of the holes in the second row and the third row, between the connecting line of the centers of the holes in the third row and the fourth row, between the connecting line of the centers of the holes in the fourth row and the centers of the holes in the fifth row, between the connecting line of the centers of the holes in the fifth row and the sixth row, and between the connecting line of the centers of the holes in the sixth row and the connecting line of the centers of the holes in the seventh row are all 10mm; from bottom to top, the central connecting line of the first row of holes is 1.75mm away from the lower end of the antenna plate; the distance between the central connecting line of the first row of holes and the central connecting line of the second row of holes is 10.5mm; the distance between the central connecting line of the third row of holes and the central connecting line of the first row of holes is 11mm;
wherein, the round hole with the diameter of 0.6mm positioned in the first row and the first column is a positioning hole D of the top layer main body antenna and the bottom layer main body antenna;
(3) continuously drawing a main body antenna pattern of the top printed layout of the antenna board on the basis of the printed layout in the step (2), wherein the main body antenna pattern of the top layer is decomposed into three patterns A, A1 and A2:
the graph A is decomposed into a left graph and a right graph:
the left graph is a rectangle of 23mm multiplied by 5mm, and the upper part of the rectangle is close to the left and is added with a rectangle of 15.5 mm multiplied by 0.5mm;
the right graph consists of five rectangles: the first rectangle is 16.2mm multiplied by 13mm, two corners at the right end are rounded corners with the radius of 1.7mm, the lower edge of the left end of the rectangle is connected with a rectangle of 26.5mm multiplied by 4.5mm, and the upper edge of the rectangle of 26.5mm multiplied by 4.5mm is 3mm away from the left end and is a rectangle of 5.5mm multiplied by 0.5mm; a rectangle with the size of 4mm multiplied by 3.7mm is connected to the upper part of the left end of the rectangle with the size of 16.2mm multiplied by 13mm, and a rectangle with the size of 21.3mm multiplied by 1.5mm is connected to the upper part of the left end of the rectangle with the size of 4mm multiplied by 3.7 mm;
the center of the positioning hole D with the diameter of 0.6mm in the step (2) corresponds to the lower right corner of the rectangle with the size of 16.2mm multiplied by 13mm on the right side of the pattern, is 1.2mm away from the right end of the rectangle with the size of 16.2mm multiplied by 13mm, and is 1.5mm away from the lower end of the rectangle with the size of 16.2mm multiplied by 13 mm;
the A1 graph is decomposed into three graphs A11, A12 and A13 from right to left:
where a11 consists of two rectangles: from right to left, a 2mm by 4.5mm rectangle and a 5.5mm by 8.5mm rectangle are arranged in sequence, and the upper sides of the rectangles are aligned;
where a12 consists of six rectangles and four squares: a square of 1mm multiplied by 1mm is arranged from right to left in sequence, the left end of the square is connected with a rectangle of 1mm multiplied by 7mm, and the upper sides of the square are aligned and connected; the left side of the lower end of the rectangle of 1mm multiplied by 7mm is connected with a square of 1mm multiplied by 1mm, and the lower sides are aligned and connected; the left end of the square of 1mm multiplied by 1mm is connected with a rectangle of 1mm multiplied by 7mm, and the lower sides of the rectangles are aligned; the left side of the upper end of the rectangle of 1mm multiplied by 7mm is connected with a square of 1mm multiplied by 1mm, and the upper sides are aligned and connected; the left end of the square of 1mm multiplied by 1mm is connected with a rectangle of 1mm multiplied by 7mm, and the upper sides of the rectangles are aligned; the left side of the lower end of the rectangle of 1mm multiplied by 7mm is connected with a square of 1mm multiplied by 1mm, and the lower sides are aligned and connected; the left end of the square of 1mm multiplied by 1mm is connected with a rectangle of 1mm multiplied by 7mm, and the lower sides of the square are aligned and connected; the left side of the upper end of the rectangle of 1mm multiplied by 7mm is connected with a rectangle of 0.5mm multiplied by 1mm, and the upper sides are aligned and connected; the left side of the lower end of the 0.5mm multiplied by 1mm rectangle is connected with a 0.2mm multiplied by 4.95mm rectangle, and the left side is aligned and connected;
where a13 consists of two rectangles: sequentially arranging a 2.5mm multiplied by 2mm rectangle and a 31.7mm multiplied by 13.5mm rectangle from right to left, and aligning and connecting the lower sides; two corners of the left end of the rectangle with the diameter of 31.7mm multiplied by 13.5mm are fillets with the radius of 1.7mm, the middle part of the right end of the rectangle is provided with a rectangular opening with the diameter of 6mm multiplied by 1mm, and a rectangular opening with the diameter of 4mm multiplied by 1mm is arranged 2.5mm away from the left end of the rectangular opening with the diameter of 6mm multiplied by 1mm;
the A2 graph is decomposed into three graphs A21, A22 and A23 from left to right;
where a21 consists of two rectangles: a rectangle with the size of 4mm multiplied by 4mm and a rectangle with the size of 9.5mm multiplied by 2mm are arranged from left to right in sequence, and the lower sides of the rectangles are aligned and connected;
where a22 consists of two rectangles: a rectangle of 19mm multiplied by 6.5mm and a rectangle of 12.5mm multiplied by 1mm are arranged from left to right in sequence, and the upper sides of the rectangles are aligned and connected;
where a23 consists of two rectangles: the structure comprises a rectangle with the size of 11mm multiplied by 5.5mm and a rectangle with the size of 2.5mm multiplied by 3mm from left to right in sequence, and the lower sides of the rectangles are aligned and connected;
(4) drawing a basic graph of the antenna board bottom layer printed domain:
the basic graph of the bottom layer of the antenna board is correspondingly equal to the basic graph of the top layer of the antenna board in the step (2);
(5) continuously drawing a main body antenna pattern B of the bottom printed layout of the antenna board on the basis of the printed layout in the step (4), wherein the shape and the size of the main body antenna pattern B of the bottom layer are correspondingly equal to those of the main body antenna decomposition pattern A of the top layer in the step (3), only the rectangle at the position B is 4mm multiplied by 4mm, the rectangle at the position a corresponding to the main antenna decomposition pattern A of the top layer in the step (3) is 3.7mm multiplied by 4mm, namely the length difference of the two rectangles in the horizontal direction is 0.3mm;
the center of the positioning hole D with the diameter of 0.6mm in the step (2) corresponds to the upper right corner of the rectangle with the size of 16.2mm multiplied by 13mm on the right side of the graph, is 1.2mm away from the right end of the rectangle with the size of 16.2mm multiplied by 13mm, and is 1.5mm away from the upper end of the rectangle with the size of 16.2mm multiplied by 13 mm;
(6) printing the printing plate patterns drawn according to the steps (2) and (3) on the top layer of the antenna board by taking the center of the positioning hole D with the diameter of 0.6mm in the step (2) as a reference, and printing the printing plate patterns drawn according to the steps (4) and (5) on the bottom layer of the antenna board;
(7) according to the manufacturing process of the PCB product:
corner cutting: cutting four round corners with the radius of 1.7 mm;
drilling: drilling two round holes with the diameter of 3.1mm, two round holes with the diameter of 2mm and twelve round holes with the diameter of 0.6 mm;
metallization treatment of the holes: performing metallization treatment on twelve circular holes with the diameter of 0.6 mm;
and (3) corrosion protection: coating the top layer printing plate graph, the bottom layer printing plate graph and the metalized holes of the antenna board with an anti-corrosion protective coating, wherein in the step (3), a rectangular opening with the size of 6mm multiplied by 1mm in the A13 graph and a rectangular opening with the size of 4mm multiplied by 1mm at the position 2.5mm away from the left end of the rectangular opening with the size of 6mm multiplied by 1mm are not coated with the anti-corrosion protective coating;
etching: removing the copper plates outside the printing plate patterns on the top layer and the bottom layer of the antenna board and the rectangular opening of 6mm multiplied by 1mm in the A13 pattern and the rectangular copper plate of 4mm multiplied by 1mm at the position 2.5mm away from the left end of the rectangular opening of 6mm multiplied by 1mm in the step (3) by using a proper process method;
protection: and carrying out comprehensive cleaning and protecting treatment on the copper plates of the top layer printing plate pattern and the bottom layer printing plate pattern of the antenna plate and the antenna plate according to the technical requirements.
Furthermore, the PCB antenna board is made of an FR4 double-sided FTB copper-clad plate, the dielectric constant of the PCB antenna board is 4.6, and the thickness of the single-sided copper-clad plate is 0.035mm.
A fourth generation high-gain wideband LTE built-in antenna, comprising:
the antenna board is a rectangular PCB double-sided copper-clad plate, the thickness of the board is 0.8mm, the length of the board is 110mm, and the width of the board is 26mm; setting one copper-clad plate surface of the antenna plate as a top layer and the other copper-clad plate surface as a bottom layer; the antenna board, the top layer copper-clad board surface and the bottom layer copper-clad board surface are formed after being processed by a PCB (printed circuit board) process method:
a. the basic structure of the antenna board top layer is as follows:
four corners of the antenna board are fillets with the radius of 2 mm;
on the center line of the width direction of the antenna plate, two process holes with the diameter of 3.1mm are symmetrically arranged by taking the center line of the length direction of the antenna plate as an axis, and the center distance is 86mm;
two process holes with the diameter of 2mm are symmetrically arranged on the center line of the antenna plate in the width direction by taking the center line of the antenna plate in the length direction as an axis, and the center distance is 76mm;
the three rows and the seven columns of circular holes with the diameter of 0.6mm are totally twelve, the first row and the second row are totally five, and from right to left, the central connecting line of the holes in the first column is 1.5mm away from the right end of the antenna plate; the distance between the central connecting line of the first row of holes and the central connecting line of the second row of holes is 7mm; the distances between the connecting line of the centers of the holes in the second row and the third row, between the connecting line of the centers of the holes in the third row and the fourth row, between the connecting line of the centers of the holes in the fourth row and the centers of the holes in the fifth row, between the connecting line of the centers of the holes in the fifth row and the sixth row, and between the connecting line of the centers of the holes in the sixth row and the connecting line of the centers of the holes in the seventh row are all 10mm; from bottom to top, the central connecting line of the first row of holes is 1.75mm away from the lower end of the antenna plate; the distance between the central connecting line of the first row of holes and the central connecting line of the second row of holes is 10.5mm; the distance between the central connecting line of the third row of holes and the central connecting line of the first row of holes is 11mm; the inner walls of twelve circular holes with the diameter of 0.6mm in all the three rows and the seven columns are subjected to metallization treatment;
b. the antenna plate comprises an antenna plate top layer main body antenna copper plate, wherein the antenna plate top layer main body antenna copper plate is divided into three parts A, A1 and A2;
the part A copper plate is divided into a left part and a right part;
the left part is a rectangular copper plate with the thickness of 23mm multiplied by 5mm, and the upper part of the rectangle is connected with a rectangular copper plate with the thickness of 15.5 mm multiplied by 0.5mm close to the left;
the right copper plate consists of five rectangular copper plates: the first rectangular copper plate is 16.2mm multiplied by 13mm, the upper end of the rectangle is provided with a half hole which is coincided with a technical hole with the diameter of 3.1mm, the lower end of the rectangle is 1.5mm away from the center of the positioning hole D, the right end of the rectangle is 1.2mm away from the center of the positioning hole D, two corners of the right end of the rectangle are fillets with the radius of 1.7mm, the upper edge of the left end of the rectangle copper plate is connected with a rectangular copper plate with the diameter of 4mm multiplied by 3.7mm, the upper end of the rectangle copper plate with the diameter of 4mm multiplied by 3.7mm is provided with a half hole which is coincided with the technical hole with the diameter of 2mm, and the upper edge of the left end of the rectangle copper plate with the diameter of 4mm multiplied by 3.7mm is connected with a rectangular copper plate with the diameter of 21.3mm multiplied by 1.5mm; a rectangular copper plate with the thickness of 26.5mm multiplied by 4.5mm is connected to the lower side of the left end of the rectangular copper plate with the thickness of 16.2mm multiplied by 13mm, and a rectangular copper plate with the thickness of 5.5mm multiplied by 0.5mm is connected to the position 3mm away from the left end of the rectangular copper plate with the thickness of 26.5mm multiplied by 4.5 mm;
the A1 copper plate is decomposed into three parts A11, A12 and A13 from right to left;
wherein A11 portion comprises two rectangle copper plates: a rectangular copper plate with the thickness of 2mm multiplied by 4.5mm and a rectangular copper plate with the thickness of 5.5mm multiplied by 8.5mm are sequentially arranged from right to left, and the upper sides of the copper plates are aligned and connected;
wherein, A12 portion comprises six rectangle copper plates and four square copper plates: a square copper plate with the thickness of 1mm multiplied by 1mm is arranged from right to left in sequence, the left end of the square is connected with a rectangular copper plate with the thickness of 1mm multiplied by 7mm, and the upper sides of the square are aligned and connected; the left side of the lower end of the rectangular copper plate with the size of 1mm multiplied by 7mm is connected with a square copper plate with the size of 1mm multiplied by 1mm, and the lower sides of the square copper plates are aligned and connected; the left end of the 1mm multiplied by 1mm square copper plate is connected with a 1mm multiplied by 7mm rectangular copper plate, and the upper sides of the copper plates are aligned and connected; the left side of the upper end of the rectangular copper plate with the size of 1mm multiplied by 1mm is connected with a square copper plate with the size of 1mm multiplied by 7mm; the left end of the square copper plate with the thickness of 1mm multiplied by 1mm is connected with a rectangular copper plate with the thickness of 1mm multiplied by 7mm; the left side of the lower end of the rectangular copper plate with the size of 1mm multiplied by 7mm is connected with a square copper plate with the size of 1mm multiplied by 1mm; the left end of the 1mm multiplied by 1mm square copper plate is connected with a 1mm multiplied by 7mm rectangular copper plate, and the lower sides of the copper plates are aligned and connected; the left side of the upper end of the rectangular copper plate with the size of 1mm multiplied by 7mm is connected with a rectangular copper plate with the size of 0.5mm multiplied by 1mm, and the upper sides of the rectangular copper plates are connected in an aligned mode; the left side of the lower end of the rectangular copper plate with the size of 0.5mm multiplied by 1mm is connected with a rectangular copper plate with the size of 0.2mm multiplied by 4.95mm, and the left side of the rectangular copper plate is aligned and connected;
wherein A13 portion comprises two rectangle copper plates: a rectangular copper plate with the thickness of 2.5mm multiplied by 2mm and a rectangular copper plate with the thickness of 31.7mm multiplied by 13.5mm are arranged from right to left in sequence, and the lower sides of the copper plates are aligned and connected; the upper end of the rectangular copper plate with the diameter of 31.7mm multiplied by 13.5mm is provided with a half hole which is superposed with a process hole with the diameter of 3.1mm and a half hole which is superposed with a process hole with the diameter of 2mm, two corners at the left end of the rectangular copper plate with the diameter of 31.7mm multiplied by 13.5mm are fillets with the radius of 1.7mm, the middle part of the right end of the rectangular copper plate is provided with a rectangular opening with the diameter of 6mm multiplied by 1mm for removing the copper plate, and a rectangular frame with the diameter of 4mm multiplied by 1mm for removing the copper plate is arranged 2.5mm away from the left end of the rectangular opening with the diameter of 6mm multiplied by 1mm;
the A2 copper plate is decomposed into three parts A21, A22 and A23 from left to right;
wherein A21 portion comprises two rectangle copper plates: a rectangular copper plate with the thickness of 4mm multiplied by 4mm and a rectangular copper plate with the thickness of 9.5mm multiplied by 2mm are sequentially arranged from left to right, and the lower sides of the copper plates are aligned and connected; the left end of the 4mm × 4mm rectangular copper plate is 1mm away from the right end of the A13 part 2.5mm × 2mm rectangular copper plate, and the lower edge of the 4mm × 4mm rectangular copper plate and the lower edge of the A13 part 2.5mm × 2mm rectangular copper plate are on the same straight line;
wherein A22 portion comprises two rectangle copper plates: a rectangular copper plate with the thickness of 19mm multiplied by 6.5mm and a rectangular copper plate with the thickness of 12.5mm multiplied by 1mm are sequentially arranged from left to right, and the upper sides of the copper plates are aligned and connected;
wherein A23 portion comprises two rectangle copper plates: a rectangular copper plate with the thickness of 11mm multiplied by 5.5mm and a rectangular copper plate with the thickness of 2.5mm multiplied by 3mm are sequentially arranged from left to right, and the lower sides of the rectangular copper plates are aligned and connected;
c. a base structure of the antenna panel bottom layer;
the basic structure of the bottom layer of the antenna board is correspondingly equal to that of the top layer of the antenna board;
d. antenna plate bottom layer main part antenna copper B, bottom layer main part antenna copper B with the shape, the size correspondence of top layer main part antenna copper A portion equals, and the rectangle in B department is 4mm, the rectangle that top layer main part antenna copper A portion corresponds position a department is 3.7mm 4mm, and two rectangle horizontal direction's length difference is 0.3mm promptly.
The PCB antenna board is made of an FR4 double-sided board, the dielectric constant of the PCB antenna board is 4.6, and the thickness of a single-sided copper-clad board is 0.035mm.
When the fourth generation high-gain broadband LTE built-in antenna is used, a wiring configuration is 1.37 coaxial cable, a copper core of the 1.37 coaxial cable is connected with a rectangular copper plate with the thickness of 2.5mm multiplied by 3mm of the A23 part in a welding mode, a shielding wire sleeve of the 1.37 coaxial cable is connected with the middle part of the left end of a rectangular copper plate with the thickness of 16.2mm multiplied by 13mm of the right part of the A part in a welding mode, and a patch winding inductor is arranged at a rectangular copper plate with the thickness of 4mm multiplied by 3.7mm on the upper side of the left end of the rectangular copper plate with the thickness of 16.2mm multiplied by 13 mm.
As shown in fig. 12 to fig. 15, the graphs and data obtained by the test of the present invention have two main advantages compared with the prior art: firstly, the volume is small, and the size is only 110 multiplied by 26 multiplied by 0.8mm; secondly, the frequency bandwidth meets the requirements of all 4G frequency bands; thirdly, the performance can completely meet the requirements.
Drawings
Fig. 1 is a schematic size diagram of a fourth generation high-gain wideband LTE internal antenna board according to the present invention;
fig. 2 is a schematic diagram of a top-layer base structure of a fourth-generation high-gain wideband LTE internal antenna board according to the present invention;
fig. 3 is a fractal schematic diagram of a top-layer main antenna structure of a fourth-generation high-gain wideband LTE internal antenna board and three parts a, A1 and A2 according to the present invention;
fig. 4 is a fractal schematic diagram of a top layer main antenna a portion structure and left and right portions of a fourth generation high-gain wideband LTE internal antenna board according to the present invention;
fig. 5 is a fractal schematic diagram of a top layer main body antenna A1 and three parts a11, a12, and a13 of a fourth generation high-gain wideband LTE internal antenna board according to the present invention;
fig. 6 is a fractal schematic diagram of a top layer main body antenna A2 and three parts a21, a22, and a23 of a fourth generation high-gain wideband LTE internal antenna board according to the present invention;
FIG. 7 is a top layer structure diagram of a fourth generation high-gain broadband LTE internal antenna product of the present invention;
FIG. 8 is a schematic diagram of the bottom foundation structure of a fourth generation high-gain wideband LTE internal antenna board according to the present invention;
fig. 9 is a schematic diagram of a B-portion structure, left and right portions of a bottom-layer main antenna of a fourth-generation high-gain wideband LTE internal antenna board according to the present invention;
FIG. 10 is a schematic bottom view of a fourth generation high-gain broadband LTE internal antenna product according to the present invention;
FIG. 11 is a top and bottom structure schematic diagram of a fourth generation high-gain broadband LTE internal antenna product of the present invention;
FIG. 12 shows one of the test patterns of the fourth generation high-gain wideband LTE built-in antenna according to the present invention;
FIG. 13 is a second test pattern of a fourth generation high-gain wideband LTE built-in antenna according to the present invention;
fig. 14 shows a third test pattern of a fourth generation high-gain wideband LTE internal antenna according to the present invention;
fig. 15 is a table of test data for the fourth generation high-gain wideband LTE internal antenna of the present invention.
Detailed Description
The present invention will be described with reference to specific embodiments.
Method example 1:
as shown in fig. 1 to 11, the method for constructing the fourth generation high-gain wideband LTE internal antenna includes the following steps:
(1) manufacturing an antenna board 1, wherein the antenna board 1 is a rectangular PCB double-sided copper-clad plate with the thickness of 110mm multiplied by 26mm and the thickness of the plate is 0.8mm; setting one copper-clad plate surface of the antenna plate 1 as a top layer and the other copper-clad plate surface as a bottom layer;
(2) drawing a basic graph of the top printed layout of the antenna board 1:
four corners of the antenna board 1 are fillets with the radius of 2 mm;
the two process holes with the diameter of 3.1mm are symmetrically arranged on two sides of the central line of the antenna plate 1 in the length direction on the central line of the antenna plate 1 in the width direction at the center of the process holes with the diameter of 3.1mm, and the center distance is 86mm;
the two process holes with the diameter of 2mm are symmetrically arranged on two sides of the central line of the antenna plate 1 in the length direction on the central line of the antenna plate 1 in the width direction of the antenna plate 1 at the center of the process holes with the diameter of 2mm, and the center distance is 76mm;
the three rows and the seven columns of twelve round holes with the diameter of 0.6mm are totally provided, wherein the first row and the second row have five rows, and from right to left, the central connecting line of the holes in the first row is 1.5mm away from the right end of the antenna plate 1; the distance between the central connecting line of the first row of holes and the central connecting line of the second row of holes is 7mm; the distances between the connecting line of the centers of the holes in the second row and the third row, between the connecting line of the centers of the holes in the third row and the fourth row, between the connecting line of the centers of the holes in the fourth row and the centers of the holes in the fifth row, between the connecting line of the centers of the holes in the fifth row and the sixth row, and between the connecting line of the centers of the holes in the sixth row and the connecting line of the centers of the holes in the seventh row are all 10mm; from bottom to top, the central connecting line of the first row of holes is 1.75mm away from the lower end of the antenna plate 1; the distance between the central connecting line of the first row of holes and the central connecting line of the second row of holes is 10.5mm; the distance between the central connecting line of the third row of holes and the central connecting line of the first row of holes is 11mm;
the circular holes with the diameter of 0.6mm in the first row and the first column are positioning holes D of the top layer main body antenna and the bottom layer main body antenna;
(3) continuously drawing a main body antenna pattern of the top layer printed layout of the antenna board 1 on the basis of the printed layout in the step (2), wherein the main body antenna pattern of the top layer is decomposed into three patterns A, A1 and A2:
the graph A is decomposed into a left graph and a right graph:
the left graph is a rectangle of 23mm multiplied by 5mm, and the upper part of the rectangle is close to the left and is added with a rectangle of 15.5 mm multiplied by 0.5mm;
the right graph consists of five rectangles: the first rectangle is 16.2mm multiplied by 13mm, two corners at the right end are fillets with the radius of 1.7mm, the lower edge of the left end of the rectangle is connected with a rectangle with the radius of 26.5mm multiplied by 4.5mm, and the upper edge of the rectangle with the radius of 26.5mm multiplied by 4.5mm is 3mm away from the left end and is a rectangle with the radius of 5.5mm multiplied by 0.5mm; a rectangle with the size of 4mm multiplied by 3.7mm is connected to the upper part of the left end of the rectangle with the size of 16.2mm multiplied by 13mm, and a rectangle with the size of 21.3mm multiplied by 1.5mm is connected to the upper part of the left end of the rectangle with the size of 4mm multiplied by 3.7 mm;
the center of the positioning hole D with the diameter of 0.6mm in the step (2) corresponds to the lower right corner of the rectangle with the size of 16.2mm multiplied by 13mm of the right side pattern, is 1.2mm away from the right end of the rectangle with the size of 16.2mm multiplied by 13mm, and is 1.5mm away from the lower end of the rectangle with the size of 16.2mm multiplied by 13 mm;
the A1 graph is decomposed into three graphs A11, A12 and A13 from right to left:
where a11 consists of two rectangles: from right to left, a 2mm by 4.5mm rectangle and a 5.5mm by 8.5mm rectangle are arranged in sequence, and the upper sides of the rectangles are aligned;
where a12 consists of six rectangles and four squares: a square of 1mm multiplied by 1mm is arranged from right to left in sequence, the left end of the square is connected with a rectangle of 1mm multiplied by 7mm, and the upper sides of the square are aligned and connected; the left side of the lower end of the 1mm multiplied by 7mm rectangle is connected with a 1mm multiplied by 1mm square, and the lower sides are aligned and connected; the left end of the square of 1mm multiplied by 1mm is connected with a rectangle of 1mm multiplied by 7mm, and the lower sides of the rectangles are aligned; the left side of the upper end of the rectangle of 1mm multiplied by 7mm is connected with a square of 1mm multiplied by 1mm, and the upper sides of the squares are aligned and connected; the left end of the square of 1mm multiplied by 1mm is connected with a rectangle of 1mm multiplied by 7mm, and the upper sides of the rectangles are aligned; the left side of the lower end of the 1mm multiplied by 7mm rectangle is connected with a 1mm multiplied by 1mm square, and the lower sides are aligned and connected; the left end of the square of 1mm multiplied by 1mm is connected with a rectangle of 1mm multiplied by 7mm, and the lower sides of the square are aligned and connected; the left side of the upper end of the 1mm multiplied by 7mm rectangle is connected with a 0.5mm multiplied by 1mm rectangle, and the upper sides of the rectangles are aligned and connected; the left side of the lower end of the 0.5mm multiplied by 1mm rectangle is connected with a 0.2mm multiplied by 4.95mm rectangle, and the left side is aligned and connected;
where a13 consists of two rectangles: sequentially arranging a 2.5mm multiplied by 2mm rectangle and a 31.7mm multiplied by 13.5mm rectangle from right to left, and aligning and connecting the lower sides; two corners of the left end of the rectangle with the diameter of 31.7mm multiplied by 13.5mm are fillets with the radius of 1.7mm, the middle part of the right end of the rectangle is provided with a rectangular opening with the diameter of 6mm multiplied by 1mm, and a rectangular opening with the diameter of 4mm multiplied by 1mm is arranged 2.5mm away from the left end of the rectangular opening with the diameter of 6mm multiplied by 1mm;
the A2 graph is decomposed into three graphs A21, A22 and A23 from left to right;
where a21 consists of two rectangles: a rectangle with the size of 4mm multiplied by 4mm and a rectangle with the size of 9.5mm multiplied by 2mm are arranged from left to right in sequence, and the lower sides of the rectangles are aligned and connected;
where a22 consists of two rectangles: a rectangle with the size of 19mm multiplied by 6.5mm and a rectangle with the size of 12.5mm multiplied by 1mm are arranged from left to right in sequence, and the upper sides of the rectangles are aligned and connected;
where a23 consists of two rectangles: the rectangle is 11mm multiplied by 5.5mm and the rectangle is 2.5mm multiplied by 3mm from left to right in sequence, and the lower sides of the rectangles are aligned and connected;
(4) drawing a basic graph of the bottom printed layout of the antenna board 1:
the basic graph of the bottom layer of the antenna board 1 is correspondingly equal to the basic graph of the top layer of the antenna board 1 in the step (2);
(5) continuously drawing a main body antenna pattern B of the bottom layer printed domain of the antenna board 1 on the basis of the printed domain in the step (4), wherein the shape and the size of the main body antenna pattern B of the bottom layer are correspondingly equal to those of the main body antenna decomposition graph A of the top layer in the step (3), only the rectangle at the position B is 4mm multiplied by 4mm, the rectangle at the position a corresponding to the main body antenna decomposition graph A of the top layer in the step (3) is 3.7mm multiplied by 4mm, namely the length difference of the two rectangles in the horizontal direction is 0.3mm;
the center of the positioning hole D with the diameter of 0.6mm in the step (2) corresponds to the upper right corner of the rectangle with the diameter of 16.2mm multiplied by 13mm of the right graph, is 1.2mm away from the right end of the rectangle with the diameter of 16.2mm multiplied by 13mm, and is 1.5mm away from the upper end of the rectangle with the diameter of 16.2mm multiplied by 13 mm;
(6) printing the printing plate patterns drawn according to the steps (2) and (3) on the top layer of the antenna board 1 by taking the center of the positioning hole D with the diameter of 0.6mm in the step (2) as a reference, and printing the printing plate patterns drawn according to the steps (4) and (5) on the bottom layer of the antenna board 1;
(7) according to the manufacturing process of the PCB product:
corner cutting: cutting four round corners with the radius of 1.7 mm;
drilling: drilling two round holes with the diameter of 3.1mm, two round holes with the diameter of 2mm and twelve round holes with the diameter of 0.6 mm;
metallization treatment of the holes: carrying out metallization treatment on twelve circular holes with the diameter of 0.6 mm;
and (3) corrosion protection: coating the top layer printing plate graph, the bottom layer printing plate graph and the metalized hole of the antenna board 1 with an anti-corrosion protective coating, wherein in the step (3), a rectangular opening with the size of 6mm multiplied by 1mm in the A13 graph and a rectangular opening with the size of 4mm multiplied by 1mm at the position 2.5mm away from the left end of the rectangular opening with the size of 6mm multiplied by 1mm are not coated with the anti-corrosion protective coating;
etching: removing the copper plates outside the printing plate patterns on the top layer and the bottom layer of the antenna board 1 and the rectangular opening of 6mm multiplied by 1mm in the A13 pattern and the rectangular copper plate of 4mm multiplied by 1mm at the position 2.5mm away from the left end of the rectangular opening of 6mm multiplied by 1mm in the step (3) by using a proper process method;
protection: and carrying out comprehensive cleaning and protecting treatment on the copper plates of the top layer printing plate pattern and the bottom layer printing plate pattern of the antenna plate 1 and the antenna plate according to the technical requirements.
Method example 2:
the present example differs from method example 1 in that: the PCB antenna board 1 is made of an F-radius 4 double-sided FTB copper-clad plate, the dielectric constant of the PCB antenna board is 4.6, and the thickness of the single-sided copper-clad plate is 0.035mm.
Product example 1:
as shown in fig. 1 to 11, a fourth generation high-gain wideband LTE internal antenna includes:
an antenna board 1, as shown in fig. 1, the antenna board 1 is a rectangular PCB double-sided copper-clad plate with the thickness of 110mm × 26mm, and the thickness of the board is 0.8mm; setting one copper-clad plate surface of the antenna plate 1 as a top layer and the other copper-clad plate surface as a bottom layer; the antenna board 1 and the top layer copper-clad board surface and the bottom layer copper-clad board surface are formed after being processed by a PCB (printed circuit board) process method:
a. the basic structure of the antenna board top layer is as shown in fig. 2:
four corners of the antenna board 1 are fillets with the radius of 2 mm;
on the center line of the width direction of the antenna plate 1, two process holes with the diameter of 3.1mm are symmetrically arranged by taking the center line of the length direction of the antenna plate 1 as an axis, and the center distance is 86mm;
on the center line of the width direction of the antenna plate 1, two process holes with the diameter of 2mm are symmetrically arranged by taking the center line of the length direction of the antenna plate 1 as an axis, and the center distance is 76mm;
the antenna plate comprises three rows and seven columns, twelve circular holes with the diameter of 0.6mm are formed in the three rows and the seven columns, five rows are formed in the first row and the second row, and the central connecting line of the holes in the first row is 1.5mm away from the right end of the antenna plate 1 from right to left; the distance between the central connecting line of the first row of holes and the central connecting line of the second row of holes is 7mm; the distances between the central connecting line of the second row of holes and the central connecting line of the third row of holes, between the central connecting line of the third row of holes and the central connecting line of the fourth row of holes and the central connecting line of the fifth row of holes, between the central connecting line of the fifth row of holes and the central connecting line of the sixth row of holes and between the central connecting line of the sixth row of holes and the central connecting line of the seventh row of holes are all 10mm; from bottom to top, the central connecting line of the first row of holes is 1.75mm away from the lower end of the antenna plate 1; the distance between the central connecting line of the first row of holes and the central connecting line of the second row of holes is 10.5mm; the distance between the central connecting line of the third row of holes and the central connecting line of the first row of holes is 11mm; the inner walls of twelve circular holes with the diameter of 0.6mm in all the three rows and the seven columns are subjected to metallization treatment;
b. the antenna plate 1 has a top layer main body antenna copper plate, and the top layer main body antenna copper plate is divided into three parts, i.e. a, A1 and A2, as shown in fig. 3, 7 and 11:
the copper plate of the part A is divided into a left part and a right part, as shown in figure 4:
the left part is a rectangular copper plate with the thickness of 23mm multiplied by 5mm, and the upper part of the left end of the rectangular copper plate is connected with a rectangular copper plate with the thickness of 15.5 mm multiplied by 0.5mm;
the right copper plate consists of five rectangular copper plates: the first rectangular copper plate is 16.2mm multiplied by 13mm, the upper end of the first rectangular copper plate is provided with a half hole which is superposed with a process hole with the diameter of 3.1mm, the lower end of the first rectangular copper plate is 1.5mm away from the center of the positioning hole D, the right end of the first rectangular copper plate is 1.2mm away from the center of the positioning hole D, two corners of the right end of the first rectangular copper plate are fillets with the radius of 1.7mm, the upper edge of the left end of the first rectangular copper plate is connected with a rectangular copper plate with the diameter of 4mm multiplied by 3.7mm, the upper end of the rectangular copper plate with the diameter of 4mm multiplied by 3.7mm is provided with a half hole which is superposed with a process hole with the diameter of 2mm, and the upper edge of the left end of the rectangular copper plate with the diameter of 4mm multiplied by 3.7mm is connected with a rectangular copper plate with the diameter of 21.3mm multiplied by 1.5mm; a rectangular copper plate with the thickness of 26.5mm multiplied by 4.5mm is connected to the lower side of the left end of the rectangular copper plate with the thickness of 16.2mm multiplied by 13mm, and a rectangular copper plate with the thickness of 5.5mm multiplied by 0.5mm is connected to the position 3mm away from the left end of the rectangular copper plate with the thickness of 26.5mm multiplied by 4.5 mm;
the A1 copper plate is decomposed into three parts A11, A12 and A13 from right to left, as shown in FIG. 5:
wherein A11 portion comprises two rectangle copper boards: a rectangular copper plate with the thickness of 2mm multiplied by 4.5mm and a rectangular copper plate with the thickness of 5.5mm multiplied by 8.5mm are sequentially arranged from right to left;
the part A12 consists of six rectangular copper plates and four square copper plates: a square copper plate with the thickness of 1mm multiplied by 1mm is arranged from right to left in sequence, and the left end of the square copper plate is connected with a rectangular copper plate with the thickness of 1mm multiplied by 7mm; the left side of the lower end of the rectangular copper plate with the size of 1mm multiplied by 1mm is connected with a square copper plate with the size of 1mm multiplied by 1mm; the left end of the square copper plate with the size of 1mm multiplied by 1mm is connected with a rectangular copper plate with the size of 1mm multiplied by 7mm; the left side of the upper end of the rectangular copper plate with the size of 1mm multiplied by 1mm is connected with a square copper plate with the size of 1mm multiplied by 1mm; the left end of the square copper plate with the thickness of 1mm multiplied by 1mm is connected with a rectangular copper plate with the thickness of 1mm multiplied by 7mm; the left side of the lower end of the rectangular copper plate with the size of 1mm multiplied by 1mm is connected with a square copper plate with the size of 1mm multiplied by 1mm; the left end of the square copper plate with the size of 1mm multiplied by 1mm is connected with a rectangular copper plate with the size of 1mm multiplied by 7mm; the left side of the upper end of the rectangular copper plate with the size of 1mm multiplied by 7mm is connected with a rectangular copper plate with the size of 0.5mm multiplied by 1mm; the left side of the lower end of the rectangular copper plate with the size of 0.5mm multiplied by 1mm is connected with a rectangular copper plate with the size of 0.2mm multiplied by 4.95 mm;
wherein A13 part comprises two rectangular copper plates: a rectangular copper plate with the thickness of 2.5mm multiplied by 2mm and a rectangular copper plate with the thickness of 31.7mm multiplied by 13.5mm are sequentially arranged from right to left; the upper end of the rectangular copper plate with the diameter of 31.7mm multiplied by 13.5mm is provided with a half hole which is superposed with a process hole with the diameter of 3.1mm and a half hole which is superposed with a process hole with the diameter of 2mm, two corners at the left end of the rectangular copper plate with the diameter of 31.7mm multiplied by 13.5mm are fillets with the radius of 1.7mm, the middle part of the right end of the rectangular copper plate is provided with a rectangular opening with the diameter of 6mm multiplied by 1mm for removing the copper plate, and a rectangular frame with the diameter of 4mm multiplied by 1mm for removing the copper plate is arranged 2.5mm away from the left end of the rectangular opening with the diameter of 6mm multiplied by 1mm;
the A2 copper plate is decomposed into three parts A21, A22 and A23 from left to right, as shown in FIG. 6;
wherein A21 portion comprises two rectangle copper boards: a rectangular copper plate with the thickness of 4mm multiplied by 4mm and a rectangular copper plate with the thickness of 9.5mm multiplied by 2mm are sequentially arranged from left to right; the distance between the left end of the 4mm × 4mm rectangular copper plate and the right end of the A13 part is 1mm, and the lower edge of the 4mm × 4mm rectangular copper plate and the lower edge of the A13 part is on the same straight line, wherein the distance between the left end of the 4mm × 4mm rectangular copper plate and the right end of the A13 part is 2.5mm × 2mm rectangular copper plate;
wherein A22 portion comprises two rectangle copper plates: a rectangular copper plate with the thickness of 19mm multiplied by 6.5mm and a rectangular copper plate with the thickness of 12.5mm multiplied by 1mm are sequentially arranged from left to right;
wherein A23 portion comprises two rectangle copper plates: a rectangular copper plate with the thickness of 11mm multiplied by 5.5mm and a rectangular copper plate with the thickness of 2.5mm multiplied by 3mm are sequentially arranged from left to right;
c. the basic structure of the bottom layer of the antenna board 1 is as shown in fig. 8:
the basic structure of the bottom layer of the antenna board is correspondingly equal to that of the top layer of the antenna board 1;
d. as shown in fig. 9, 10 and 11, the bottom-layer main body antenna copper plate B of the antenna board is equal to the top-layer main body antenna copper plate a in shape and size, except that the rectangle at the B is 4mm × 4mm, and the rectangle at the position a corresponding to the top-layer main body antenna decomposition pattern a is 3.7mm × 4mm, that is, the length difference between the two rectangles in the horizontal direction is 0.3mm.
Product example 2:
the present example differs from product example 1 in that: the PCB antenna board 1 is made of an FR4 double-sided FTB copper-clad plate, the dielectric constant of the PCB antenna board is 4.6, and the thickness of the single-sided copper-clad plate is 0.035mm.
When the fourth generation high-gain broadband LTE built-in antenna is used, a wiring configuration is a 1.37 coaxial cable, a copper core of the 1.37 coaxial cable is connected with a rectangular copper plate with the thickness of 2.5mm multiplied by 3mm of the part A23 in a welding mode, a shielding wire sleeve of the 1.37 coaxial cable is connected with the middle of the left end of a rectangular copper plate with the thickness of 16.2mm multiplied by 13mm of the right part of the part A in a welding mode, and a patch winding inductor is arranged at a rectangular copper plate with the thickness of 4mm multiplied by 3.7mm on the upper side of the left end of the rectangular copper plate with the thickness of 16.2mm multiplied by 13 mm.
As shown in fig. 12 to fig. 15, the graphs and data obtained by the test of the present invention have two main beneficial effects compared with the prior art: firstly, the volume is small, and the size is only 110 multiplied by 26 multiplied by 0.8mm; secondly, the frequency bandwidth meets the requirements of all 4G frequency bands; thirdly, the performance can completely meet the requirements.
The above description is only a preferred embodiment of the present invention, and it should not be understood that the present invention is limited to the details of the embodiment and the range of applications, which can be changed by those skilled in the art according to the spirit of the present invention.
Claims (4)
1. A method for forming a fourth generation high-gain broadband LTE built-in antenna is characterized in that: the method comprises the following steps:
(1) manufacturing an antenna board (1), wherein the antenna board (1) is a rectangular PCB double-sided copper-clad plate with the thickness of 110mm multiplied by 26mm, and the thickness of the board is 0.8mm; setting a copper-clad plate surface of the antenna plate (1) as a top layer and the other copper-clad plate surface as a bottom layer;
(2) drawing a basic graph of a top printed layout of the antenna board (1):
four corners of the antenna board (1) are fillets with the radius of 2 mm;
the antenna comprises two process holes with the diameter of 3.1mm, wherein the centers of the process holes with the diameter of 3.1mm are positioned on the central line of the antenna plate (1) in the width direction and symmetrically arranged on two sides of the central line of the antenna plate (1) in the length direction, and the center distance is 86mm;
the antenna comprises two process holes with the diameter of 2mm, wherein the centers of the process holes with the diameter of 2mm are positioned on the central line of the antenna plate (1) in the width direction and symmetrically arranged on two sides of the central line of the antenna plate (1) in the length direction, and the center distance is 76mm;
the three rows and the seven columns are twelve round holes with the diameter of 0.6mm, the first row and the second row are five rows, and from right to left, the central connecting line of the holes in the first row is 1.5mm away from the right end of the antenna plate (1); the distance between the central connecting line of the first row of holes and the central connecting line of the second row of holes is 7mm; the distances between the central connecting line of the second row of holes and the central connecting line of the third row of holes, between the central connecting line of the third row of holes and the central connecting line of the fourth row of holes and the central connecting line of the fifth row of holes, between the central connecting line of the fifth row of holes and the central connecting line of the sixth row of holes and between the central connecting line of the sixth row of holes and the central connecting line of the seventh row of holes are all 10mm; from bottom to top, the central connecting line of the first row of holes is 1.75mm away from the lower end of the antenna plate (1); the distance between the central connecting line of the first row of holes and the central connecting line of the second row of holes is 10.5mm; the distance between the central connecting line of the third row of holes and the central connecting line of the first row of holes is 11mm;
wherein, the round hole with the diameter of 0.6mm positioned in the first row and the first column is a positioning hole D of the top layer main body antenna and the bottom layer main body antenna;
(3) continuously drawing a main antenna pattern of the top layer printed layout of the antenna board (1) on the basis of the printed layout in the step (2), wherein the main antenna pattern of the top layer is decomposed into three patterns A, A1 and A2:
the graph A is decomposed into a left graph and a right graph:
the left graph is a rectangle of 23mm multiplied by 5mm, and the upper part of the rectangle is close to the left and is added with a rectangle of 15.5 mm multiplied by 0.5mm;
the right graph consists of five rectangles: the first rectangle is 16.2mm multiplied by 13mm, two corners at the right end are rounded corners with the radius of 1.7mm, the lower edge of the left end of the rectangle is connected with a rectangle of 26.5mm multiplied by 4.5mm, and the upper edge of the rectangle of 26.5mm multiplied by 4.5mm is 3mm away from the left end and is a rectangle of 5.5mm multiplied by 0.5mm; a rectangle with the size of 4mm multiplied by 3.7mm is connected to the upper part of the left end of the rectangle with the size of 16.2mm multiplied by 13mm, and a rectangle with the size of 21.3mm multiplied by 1.5mm is connected to the upper part of the left end of the rectangle with the size of 4mm multiplied by 3.7 mm;
the center of the positioning hole D with the diameter of 0.6mm in the step (2) corresponds to the lower right corner of the rectangle with the size of 16.2mm multiplied by 13mm on the right side of the pattern, is 1.2mm away from the right end of the rectangle with the size of 16.2mm multiplied by 13mm, and is 1.5mm away from the lower end of the rectangle with the size of 16.2mm multiplied by 13 mm;
the A1 graph is decomposed into three graphs A11, A12 and A13 from right to left:
where a11 consists of two rectangles: from right to left, a 2mm by 4.5mm rectangle and a 5.5mm by 8.5mm rectangle are arranged in sequence, and the upper sides of the rectangles are aligned;
where a12 consists of six rectangles and four squares: a square of 1mm multiplied by 1mm is arranged from right to left in sequence, the left end of the square is connected with a rectangle of 1mm multiplied by 7mm, and the upper sides of the square are aligned and connected; the left side of the lower end of the rectangle of 1mm multiplied by 7mm is connected with a square of 1mm multiplied by 1mm, and the lower sides are aligned and connected; the left end of the square of 1mm multiplied by 1mm is connected with a rectangle of 1mm multiplied by 7mm, and the lower sides of the rectangles are aligned; the left side of the upper end of the rectangle of 1mm multiplied by 7mm is connected with a square of 1mm multiplied by 1mm, and the upper sides are aligned and connected; the left end of the square of 1mm multiplied by 1mm is connected with a rectangle of 1mm multiplied by 7mm, and the upper sides of the rectangles are aligned; the left side of the lower end of the rectangle of 1mm multiplied by 7mm is connected with a square of 1mm multiplied by 1mm, and the lower sides are aligned and connected; the left end of the square of 1mm multiplied by 1mm is connected with a rectangle of 1mm multiplied by 7mm, and the lower sides of the square are aligned and connected; the left side of the upper end of the rectangle of 1mm multiplied by 7mm is connected with a rectangle of 0.5mm multiplied by 1mm, and the upper sides are aligned and connected; the left side of the lower end of the 0.5mm multiplied by 1mm rectangle is connected with a 0.2mm multiplied by 4.95mm rectangle, and the left side is aligned and connected;
where a13 consists of two rectangles: a 2.5mm multiplied by 2mm rectangle and a 31.7mm multiplied by 13.5mm rectangle are arranged from right to left in sequence, and the lower sides are aligned and connected; two corners of the left end of the rectangle with the diameter of 31.7mm multiplied by 13.5mm are fillets with the radius of 1.7mm, the middle part of the right end of the rectangle is provided with a rectangular opening with the diameter of 6mm multiplied by 1mm, and a rectangular opening with the diameter of 4mm multiplied by 1mm is arranged 2.5mm away from the left end of the rectangular opening with the diameter of 6mm multiplied by 1mm;
the A2 graph is decomposed into three graphs A21, A22 and A23 from left to right;
where a21 consists of two rectangles: a rectangle of 4mm multiplied by 4mm and a rectangle of 9.5mm multiplied by 2mm are arranged from left to right in sequence, and the lower sides of the rectangles are aligned and connected;
where a22 consists of two rectangles: a rectangle of 19mm multiplied by 6.5mm and a rectangle of 12.5mm multiplied by 1mm are arranged from left to right in sequence, and the upper sides of the rectangles are aligned and connected;
where a23 consists of two rectangles: the rectangle is 11mm multiplied by 5.5mm and the rectangle is 2.5mm multiplied by 3mm from left to right in sequence, and the lower sides of the rectangles are aligned and connected;
(4) drawing a basic graph of a bottom printed layout of the antenna board (1):
the basic graph of the bottom layer of the antenna board (1) is correspondingly equal to the basic graph of the top layer of the antenna board (1) in the step (2);
(5) continuously drawing a main body antenna pattern B of the bottom layer printed layout of the antenna board (1) on the basis of the printed layout in the step (4), wherein the shape and the size of the main body antenna pattern B of the bottom layer are correspondingly equal to those of the main body antenna decomposition pattern A of the top layer in the step (3), only the rectangle at the position B is 4mm multiplied by 4mm, the rectangle at the position a corresponding to the main body antenna decomposition pattern A of the top layer in the step (3) is 3.7mm multiplied by 4mm, namely the length difference of the two rectangles in the horizontal direction is 0.3mm;
the center of the positioning hole D with the diameter of 0.6mm in the step (2) corresponds to the upper right corner of the rectangle with the size of 16.2mm multiplied by 13mm on the right side of the graph, is 1.2mm away from the right end of the rectangle with the size of 16.2mm multiplied by 13mm, and is 1.5mm away from the upper end of the rectangle with the size of 16.2mm multiplied by 13 mm;
(6) taking the center of the positioning hole D with the diameter of 0.6mm in the step (2) as a reference, printing the printing plate pictures drawn in the steps (2) and (3) on the top layer of the antenna board (1), and printing the printing plate pictures drawn in the steps (4) and (5) on the bottom layer of the antenna board (1);
(7) according to the manufacturing process of the PCB product:
corner cutting: cutting four round corners with the radius of 1.7 mm;
drilling: drilling two circular holes with the diameter of 3.1mm, two circular holes with the diameter of 2mm and twelve circular holes with the diameter of 0.6 mm;
metallization treatment of the holes: carrying out metallization treatment on twelve circular holes with the diameter of 0.6 mm;
and (3) corrosion protection: coating the top layer printing plate graph, the bottom layer printing plate graph and the metalized hole of the antenna board (1) with an anti-corrosion protective coating, wherein in the step (3), a rectangular opening with the size of 6mm multiplied by 1mm in the A13 graph and a rectangular opening with the size of 4mm multiplied by 1mm at the position 2.5mm away from the left end of the rectangular opening with the size of 6mm multiplied by 1mm are not coated with the anti-corrosion protective coating;
etching: removing copper plates outside the top layer and the bottom layer printing plate patterns of the antenna plate (1) and the rectangular opening of 6mm multiplied by 1mm in the A13 pattern in the step (3) and the rectangular copper plate of 4mm multiplied by 1mm at the position 2.5mm away from the left end of the rectangular opening of 6mm multiplied by 1mm by a proper process method;
protection: and (3) carrying out overall cleaning protection treatment on the copper plates of the top layer printing plate patterns and the bottom layer printing plate patterns of the antenna plate (1) and the antenna plate according to the technical requirements.
2. The method as claimed in claim 1, wherein the fourth generation LTE internal antenna comprises: the PCB antenna board (1) is made of an FR4 double-sided FTB copper clad plate, the dielectric constant of the copper clad plate is 4.6, and the thickness of the single-sided copper clad plate is 0.035mm.
3. The method of claim 1 for fabricating a fourth generation high-gain wideband LTE internal antenna, wherein: the fourth generation high-gain wideband LTE internal antenna comprises:
the antenna board (1) is a rectangular PCB double-sided copper-clad plate, the thickness of the board is 0.8mm, the length of the board is 110mm, and the width of the board is 26mm; setting a copper-clad plate surface of the antenna plate (1) as a top layer and the other copper-clad plate surface as a bottom layer; the antenna board, the top layer copper-clad board surface and the bottom layer copper-clad board surface are formed after being processed by a PCB (printed circuit board) process method:
a. the antenna board (1) top layer base structure:
four corners of the antenna board (1) are fillets with the radius of 2 mm;
on a central line of the antenna plate (1) in the width direction, two process holes with the diameter of 3.1mm are symmetrically arranged by taking the central line of the antenna plate (1) in the length direction as an axis, and the center distance is 86mm;
on a central line of the antenna plate (1) in the width direction, two process holes with the diameter of 2mm are symmetrically arranged by taking the central line of the antenna plate (1) in the length direction as an axis, and the center distance is 76mm;
the three rows and the seven columns are twelve round holes with the diameter of 0.6mm, the first row and the second row are five rows, and from right to left, the central connecting line of the holes in the first row is 1.5mm away from the right end of the antenna plate (1); the distance between the central connecting line of the first row of holes and the central connecting line of the second row of holes is 7mm; the distances between the central connecting line of the second row of holes and the central connecting line of the third row of holes, between the central connecting line of the third row of holes and the central connecting line of the fourth row of holes and the central connecting line of the fifth row of holes, between the central connecting line of the fifth row of holes and the central connecting line of the sixth row of holes and between the central connecting line of the sixth row of holes and the central connecting line of the seventh row of holes are all 10mm; from bottom to top, the central connecting line of the first row of holes is 1.75mm away from the lower end of the antenna plate (1); the distance between the central connecting line of the first row of holes and the central connecting line of the second row of holes is 10.5mm; the distance between the central connecting line of the third row of holes and the central connecting line of the first row of holes is 11mm; the inner walls of twelve circular holes with the diameter of 0.6mm in all the three rows and the seven columns are subjected to metallization treatment;
b. the antenna plate (1) comprises a top layer main body antenna copper plate, wherein the top layer main body antenna copper plate is divided into three parts A, A1 and A2;
the part A copper plate is divided into a left part and a right part;
the left part is a rectangular copper plate with the thickness of 23mm multiplied by 5mm, and the upper part of the rectangle is connected with a rectangular copper plate with the thickness of 15.5 mm multiplied by 0.5mm close to the left;
the right copper plate consists of five rectangular copper plates: the first rectangular copper plate is 16.2mm multiplied by 13mm, the upper end of the rectangle is provided with a half hole which is coincided with a technical hole with the diameter of 3.1mm, the lower end of the rectangle is 1.5mm away from the center of the positioning hole D, the right end of the rectangle is 1.2mm away from the center of the positioning hole D, two corners of the right end of the rectangle are fillets with the radius of 1.7mm, the upper edge of the left end of the rectangle copper plate is connected with a rectangular copper plate with the diameter of 4mm multiplied by 3.7mm, the upper end of the rectangle copper plate with the diameter of 4mm multiplied by 3.7mm is provided with a half hole which is coincided with the technical hole with the diameter of 2mm, and the upper edge of the left end of the rectangle copper plate with the diameter of 4mm multiplied by 3.7mm is connected with a rectangular copper plate with the diameter of 21.3mm multiplied by 1.5mm; a rectangular copper plate with the thickness of 26.5mm multiplied by 4.5mm is connected to the lower side of the left end of the rectangular copper plate with the thickness of 16.2mm multiplied by 13mm, and a rectangular copper plate with the thickness of 5.5mm multiplied by 0.5mm is connected to the position 3mm away from the left end of the rectangular copper plate with the thickness of 26.5mm multiplied by 4.5 mm;
the A1 copper plate is decomposed into three parts A11, A12 and A13 from right to left;
wherein A11 portion comprises two rectangle copper boards: a rectangular copper plate with the thickness of 2mm multiplied by 4.5mm and a rectangular copper plate with the thickness of 5.5mm multiplied by 8.5mm are sequentially arranged from right to left, and the upper sides of the copper plates are aligned and connected;
wherein, A12 portion comprises six rectangle copper plates and four square copper plates: a square copper plate with the thickness of 1mm multiplied by 1mm is arranged from right to left in sequence, the left end of the square is connected with a rectangular copper plate with the thickness of 1mm multiplied by 7mm, and the upper sides of the square are aligned and connected; the left side of the lower end of the rectangular copper plate with the size of 1mm multiplied by 7mm is connected with a square copper plate with the size of 1mm multiplied by 1mm, and the lower sides of the square copper plates are aligned and connected; the left end of the 1mm multiplied by 1mm square copper plate is connected with a 1mm multiplied by 7mm rectangular copper plate, and the upper sides of the copper plates are aligned and connected; the left side of the upper end of the rectangular copper plate with the size of 1mm multiplied by 1mm is connected with a square copper plate with the size of 1mm multiplied by 1mm; the left end of the square copper plate with the thickness of 1mm multiplied by 1mm is connected with a rectangular copper plate with the thickness of 1mm multiplied by 7mm; the left side of the lower end of the rectangular copper plate with the size of 1mm multiplied by 7mm is connected with a square copper plate with the size of 1mm multiplied by 1mm; the left end of the 1mm multiplied by 1mm square copper plate is connected with a 1mm multiplied by 7mm rectangular copper plate, and the lower sides of the copper plates are aligned and connected; the left side of the upper end of the rectangular copper plate with the size of 1mm multiplied by 7mm is connected with a rectangular copper plate with the size of 0.5mm multiplied by 1mm, and the upper sides of the rectangular copper plates are aligned and connected; the left side of the lower end of the rectangular copper plate with the size of 0.5mm multiplied by 1mm is connected with a rectangular copper plate with the size of 0.2mm multiplied by 4.95mm, and the left side of the rectangular copper plate is aligned and connected;
wherein A13 portion comprises two rectangle copper plates: a rectangular copper plate with the thickness of 2.5mm multiplied by 2mm and a rectangular copper plate with the thickness of 31.7mm multiplied by 13.5mm are sequentially arranged from right to left, and the lower sides of the copper plates are aligned and connected; the upper end of the rectangular copper plate with the diameter of 31.7mm multiplied by 13.5mm is provided with a half hole which is superposed with a process hole with the diameter of 3.1mm and a half hole which is superposed with a process hole with the diameter of 2mm, two corners at the left end of the rectangular copper plate with the diameter of 31.7mm multiplied by 13.5mm are fillets with the radius of 1.7mm, the middle part of the right end of the rectangular copper plate is provided with a rectangular opening with the diameter of 6mm multiplied by 1mm for removing the copper plate, and a rectangular frame with the diameter of 4mm multiplied by 1mm for removing the copper plate is arranged 2.5mm away from the left end of the rectangular opening with the diameter of 6mm multiplied by 1mm;
the A2 copper plate is decomposed into three parts A21, A22 and A23 from left to right;
wherein A21 portion comprises two rectangle copper boards: a rectangular copper plate with the thickness of 4mm multiplied by 4mm and a rectangular copper plate with the thickness of 9.5mm multiplied by 2mm are sequentially arranged from left to right, and the lower sides of the copper plates are aligned and connected; the left end of the 4mm × 4mm rectangular copper plate is 1mm away from the right end of the A13 part 2.5mm × 2mm rectangular copper plate, and the lower edge of the 4mm × 4mm rectangular copper plate and the lower edge of the A13 part 2.5mm × 2mm rectangular copper plate are on the same straight line;
wherein A22 portion comprises two rectangle copper plates: a rectangular copper plate with the thickness of 19mm multiplied by 6.5mm and a rectangular copper plate with the thickness of 12.5mm multiplied by 1mm are sequentially arranged from left to right, and the upper sides of the rectangular copper plates are aligned and connected;
wherein A23 portion comprises two rectangle copper plates: a rectangular copper plate with the thickness of 11mm multiplied by 5.5mm and a rectangular copper plate with the thickness of 2.5mm multiplied by 3mm are sequentially arranged from left to right, and the lower sides of the rectangular copper plates are aligned and connected;
c. a base structure of the bottom layer of the antenna board (1);
the basic structure of the bottom layer of the antenna board (1) is correspondingly equal to the basic structure of the top layer of the antenna board (1);
d. antenna plate (1) bottom main part antenna copper B, bottom main part antenna copper B with the shape, the size correspondence of top layer main part antenna copper A department are equal, and the rectangle in B department is 4mm, the rectangle that top layer main part antenna copper A department corresponds position a is 3.7mm 4mm, and two rectangle horizontal direction's length difference is 0.3mm promptly.
4. The fourth-generation high-gain wideband LTE internal antenna according to claim 3, wherein: the PCB antenna board (1) is made of an FR4 double-sided board, the dielectric constant of the PCB antenna board is 4.6, and the thickness of a single-sided copper-clad board is 0.035mm.
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| KR20130108752A (en) * | 2012-03-26 | 2013-10-07 | 삼성전자주식회사 | Built-in antenna for communication electronic device |
| CN204348905U (en) * | 2014-12-04 | 2015-05-20 | 深圳市维力谷无线技术有限公司 | A kind of omnidirectional wide band high-gain PCB antenna |
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| CN105161830A (en) * | 2015-10-14 | 2015-12-16 | 苏州大学 | Broadband bow-tie-shaped symmetrical folded dipole antenna |
| CN205141132U (en) * | 2015-11-23 | 2016-04-06 | 福建省泉州华鸿通讯有限公司 | PCB board antenna of ultrabroad band |
| CN206211017U (en) * | 2016-08-26 | 2017-05-31 | 良特电子科技(东莞)有限公司 | Fourth-generation high-gain broadband LTE built-in antenna |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130108752A (en) * | 2012-03-26 | 2013-10-07 | 삼성전자주식회사 | Built-in antenna for communication electronic device |
| CN204348905U (en) * | 2014-12-04 | 2015-05-20 | 深圳市维力谷无线技术有限公司 | A kind of omnidirectional wide band high-gain PCB antenna |
| CN104993244A (en) * | 2015-06-01 | 2015-10-21 | 华侨大学 | 4G indoor wall-mounted gain antenna |
| CN105161830A (en) * | 2015-10-14 | 2015-12-16 | 苏州大学 | Broadband bow-tie-shaped symmetrical folded dipole antenna |
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