CN210350097U - Air dielectric circular polarization antenna with dielectric filling layer - Google Patents
Air dielectric circular polarization antenna with dielectric filling layer Download PDFInfo
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- CN210350097U CN210350097U CN201921607249.3U CN201921607249U CN210350097U CN 210350097 U CN210350097 U CN 210350097U CN 201921607249 U CN201921607249 U CN 201921607249U CN 210350097 U CN210350097 U CN 210350097U
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Abstract
The utility model discloses a take air medium circular polarization antenna of medium filling layer, including upper plate, median plate, lower plate, two metallization via holes, medium filling layer, two first feed needles and two second feed needles, upper plate, median plate, lower plate from top to bottom set up, upper plate work at L1 frequency channel, median plate work at L2 and L5 frequency channel, lower plate be the reflecting plate, metallization via hole set up between median plate and lower plate; the first feed pin is arranged between the upper layer plate and the lower layer plate, and the lower part of the first feed pin is arranged in the metalized through hole; the second feed pin is arranged between the middle layer plate and the lower layer plate, and the medium filling layer is arranged on the lower layer plate and positioned around the first feed pin and the second feed pin. The utility model discloses simple structure easily realizes to the air is the medium, can obtain higher gain.
Description
Technical Field
The utility model belongs to the technical field of the antenna technique and specifically relates to a take air medium circular polarized antenna of medium filling layer.
Background
Since 2008, the Global Positioning System (GPS) has formed a new framework for simultaneous navigation and positioning of three frequency GPS signals, L1(1574.42MHz), L2(1227.60 MHz) and L5(1176.45 MHz). Therefore, the research and development of a novel tri-band GPS high-performance antenna meeting the requirements of many parties is urgently needed, and especially a circularly polarized antenna having the characteristics of high gain, miniaturization, simple structure and the like is a problem which is always concerned by antenna designers.
Disclosure of Invention
An object of the utility model is to provide a what take the medium filling layer use the air can be at the circular polarized antenna of L1+ L2+ L5 frequency channel radiation circular polarized wave of medium, can obtain higher gain. In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model discloses a take air medium circular polarization antenna of medium filling layer, including upper plate, median plate, lower plate, medium filling layer, two metallization via holes, two first present needles and two second present needles, upper plate, median plate, lower plate from top to bottom the interval set up, upper plate work at L1 frequency channel, median plate work at L2 and L5 frequency channel, lower plate be the reflecting plate, the metallization via hole be the column tubular metal resonator, it sets up between median plate and lower plate; the first feed pin is arranged between the upper layer plate and the lower layer plate, and the lower part of the first feed pin is arranged in the metalized through hole; the second feed pin is arranged between the middle layer plate and the lower layer plate, the medium filling layer is arranged on the lower layer plate and is positioned around the first feed pin and the second feed pin, the feed phases of the two first feed pins form a 90-degree difference value, and the feed phases of the two second feed pins form a 90-degree difference value.
Preferably, the dielectric filling layer comprises four dielectric blocks, the dielectric constant of the dielectric blocks is 20, and the four dielectric blocks are uniformly arranged around the first feed pin and the second feed pin.
Preferably, the upper plate includes square paster board in upper strata and distribution connection upper layer bordure board around the square paster board in upper strata, the length of upper layer bordure board is less than the length of the square paster board in upper strata, make the upper layer bordure board and the square four corners position of the square paster board in upper strata form two vertical direction's upper port groove. The middle layer plate comprises a middle layer square patch plate and a middle layer edge covering plate which is connected to the periphery of the middle layer square patch plate in a distributed mode, and the length of the middle layer edge covering plate is smaller than that of the middle layer square patch plate, so that two middle layer port grooves in the vertical direction are formed in the four corners of the middle layer edge covering plate and the middle layer square patch plate.
The dielectric block is made of ceramics, and the upper layer square patch board, the upper layer edge covering board, the middle layer square patch board, the middle layer edge covering board and the lower layer board are all made of aluminum materials.
Furthermore, the metallized via hole is composed of a main cylindrical cavity with a hollow structure, an upper stepped cylindrical cavity and a lower stepped cylindrical cavity, wherein the upper stepped cylindrical cavity and the lower stepped cylindrical cavity are respectively positioned at the upper end and the lower end of the main cylindrical cavity; the lower layer plate is provided with two lower-layer stepped circular holes for fixing the lower-layer stepped cylindrical cavity and two lower-layer needle holes for the second feed needles to pass through; the middle-layer square patch plate is provided with two middle-layer stepped circular holes for fixing the upper stepped cylindrical cavity and two middle-layer needle holes for the second feed needles to pass through; the upper square patch board is provided with two upper needle holes for the first feed needles to pass through.
Wherein the first and second feed pins have a diameter phi5=1.4mm, the inner and outer radiuses of the main cylindrical cavity of the metallized via hole are respectively R4=1.5mm and R3=2 mm; the inner and outer radiuses of the upper stepped cylindrical cavity and the lower stepped cylindrical cavity are R respectively4=1.5mm and R2=2.5 mm; the height H of the main cylindrical cavity610mm, the height H of the upper stepped cylindrical cavity and the lower stepped cylindrical cavity7Is 1 mm.
Wherein the radius of the upper layer pinhole is R1=0.75 mm; the radiuses of the two circular sections of the lower layer stepped circular hole and the middle layer stepped circular hole are R2=2.5mm and R3=2mm, the radius of the lower layer pinhole is R3=2mm。
Wherein, the square paster board size of upper strata be: long L1=76.5mm, width W1=76.5mm, high H1=2mm, the size of upper bound board is: long L2=66.5mm, width W2=4mm, high H2=2 mm. The size of the middle-layer square patch board is as follows: l is3=94.2mm, width W3=94.2mm, high H3=2mm, the size of middle layer bordure board is: long L4=84.2mm, width W4=7mm, high H4=2 mm. The lower plate has a long L-shaped size5=108mm, width W5=108mm, high H5=2mm。
The size of the dielectric block is L8=25mm, width W8=25mm, high H8=4mm。
The offset of the two first feed pins relative to the center of the upper plate is 15mm, the offset of the two second feed pins relative to the center of the middle plate is 23mm, the offset of the two metalized through holes relative to the center of the middle plate is 15mm, and the offset of the edge of the dielectric block and the center of the first feed pin or the center of the second feed pin is 4 mm. The utility model discloses a size machining error control is within 1%.
Due to the adoption of the structure, the utility model discloses following beneficial effect has:
1. the utility model discloses a plane of reflection is done to the plywood down, and upper strata board and plywood are as the irradiator, and lower floor's aluminum plate is equipped with 4 feed positions and feeds to upper aluminum plate and intermediate layer aluminum plate through presenting, makes upper aluminum plate and intermediate layer aluminum plate be double-fed structure, can radiate circular polarization wave at L1+ L2+ L5 frequency channel, and antenna structure is simple, easily realizes to the air is the medium, can obtain higher gain. This application sets up the medium filling layer on the plywood down to increase the dielectric constant between plywood and the plywood down, thereby reduce the plywood size in the middle level, can reduce the manufacturing cost of the volume in order to save the antenna of antenna.
2. The upper plate and the middle plate adopt the edge covering design, so that the size of the antenna can be reduced to a certain extent, and the stability of the structure is improved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an exploded schematic view of fig. 1.
Fig. 3 is a schematic view of fig. 1 in the direction of a.
Fig. 4 is a schematic sectional view B-B of fig. 3.
FIG. 5 is a schematic view of the structure and dimensions of the lower surface of the upper plate.
FIG. 6 is a schematic view of the structure and dimensions of the lower surface of the middle plate.
FIG. 7 is a schematic diagram of the structure and dimensions of a watch on a lower plate.
Fig. 8 is a schematic diagram of the structure and dimensions of a metalized via.
Fig. 9 is a return loss curve of the present embodiment.
Fig. 10 is a gain curve of the present embodiment.
Fig. 11 is an axial ratio curve of the present embodiment.
The main reference symbols are as follows:
1: upper plate, 11: square patch board of upper strata, 12: upper layer edging board, 13: upper port groove, 14: upper layer pinhole, 2: middle-layer plate, 21: middle-layer square patch board, 22: middle layer board of borduring, 23: middle layer port groove, 24: middle-layer stepped circular hole, 25: middle layer pinhole, 3: lower plate, 31: lower-layer stepped circular hole, 32: lower layer pinhole, 4: metalized via, 41: main cylindrical cavity, 42: upper stepped cylindrical cavity, 43: stepped cylindrical cavity, 5: first feed pin, 6: second feed pin, 7: and a dielectric block.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention is further described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 and 2, the utility model discloses an air medium circular polarization antenna with medium filling layer, including upper plate 1, middle floor 2, lower floor 3, two metallized via holes 4, two first needles 5, two second needles 6 and medium filling layer are presented to two. The medium filling layer can be a whole block of medium block, and the whole block of medium block sets up hollow out construction in the position of first presenting needle, second and presenting needle and metallized via hole. The dielectric filling layer in this embodiment is four dielectric blocks 7.
The upper layer plate 1, the middle layer plate 2 and the lower layer plate 3 are arranged from top to bottom at intervals, so that an air medium layer is formed between the upper layer plate and the middle layer plate and between the middle layer plate and the lower layer plate. The upper plate 1 works in the L1 frequency band (1574.42MHz), the middle plate 2 works in the L2 and L5 frequency bands (1227.60MHz, 1176.45 MHz), and the lower plate 3 is a reflecting plate.
Referring to fig. 2, the upper plate 1 includes an upper square patch board 11 and an upper edge covering board 12 connected around the upper square patch board 11. Length L of upper hem plate 122Is less than the length L of the upper square patch board1Two upper port grooves 13 in the vertical direction (X direction and Y direction) are formed at four corners of the upper layer edge covering plate 12 and the upper layer square patch plate 11. The middle layer plate 2 comprises a middle layer square patch plate 21 and a middle layer edge covering plate 22 which is distributed and connected to the periphery of the middle layer square patch plate 21. Length L of middle layer edge covering panel 224Is shorter than the length L of the middle layer square patch board 213So that two middle layer port grooves 23 in the vertical direction are formed at the four corners of the middle layer edge covering plate 22 and the middle layer square patch plate 21. The four dielectric blocks 7 are uniformly arranged around the first feed pin 5 and the second feed pin 6.
The upper layer square patch board 11, the upper layer edge covering board 12, the middle layer square patch board 21, the middle layer edge covering board 22 and the lower layer board 3 are all made of aluminum materials. The four dielectric blocks 7 are made of a ceramic material having a dielectric constant of 20.
As shown in fig. 3 and 4, the metalized via 4 is disposed between the interlayer plate 2 and the lower layer plate 3. The first feed pin 5 is arranged between the upper layer plate 1 and the lower layer plate 3, and the lower part of the first feed pin 5 is arranged in the metalized through hole 4. The second feed pin 6 is arranged between the middle plate 2 and the lower plate 3. Two first feed 5 feed phases of feeding form 90 degrees differences, and the feed phase place of feeding needle 6 forms 90 degrees differences for two seconds, the utility model discloses the structure sets up four feed positions on plywood 3 down, feeds upper plate 1 and well plywood 2, makes upper plate 1 and well plywood 2 be double-fed structure, utilizes the 3dB electric bridge to make the feed phase place of feeding needle of upper plate 1 and well plywood 2 all form 90 degrees differences in the use to produce dextrorotation circular polarized wave.
As shown in fig. 8, the metalized via 4 is a cylindrical metal tube, such as a cylindrical copper tube. The device specifically comprises a main cylindrical cavity 41 with a hollow structure, an upper stepped cylindrical cavity 42 and a lower stepped cylindrical cavity 43. An upper stepped cylindrical cavity 42 and a lower stepped cylindrical cavity 43 are located at the upper and lower ends of the main cylindrical cavity 41, respectively. Two lower-layer stepped circular holes 31 for fixing the lower-layer stepped cylindrical cavity 43 and two lower-layer needle holes 32 for the second feed needles 6 to pass through are formed in the lower layer plate 3. The middle layer plate 2 is provided with two middle layer stepped circular holes 24 for fixing the upper stepped cylindrical cavity 42 and two middle layer needle holes 25 for the second feed needles 6 to pass through. The upper layer plate 1 is provided with two upper layer needle holes 14 for the first feed needles 5 to pass through.
The diameter phi of the first feed pin 5 and the second feed pin 65=1.4 mm. Referring to FIG. 8, the inner and outer radii of the main cylindrical cavity 41 of the metalized via 4 are R4=1.5mm and R3=2 mm. The inner and outer radii of the upper stepped cylindrical cavity 42 and the lower stepped cylindrical cavity 43 are R respectively4=1.5mm and R2=2.5mm。
The radius of the upper layer pinhole 14 is R1=0.75 mm. The radius of the two circular cross sections of the lower-layer stepped circular hole 31 and the middle-layer stepped circular hole 24 is R2=2.5mm and R3=2mm, radius of lower layer pinhole 32 is R3=2 mm. Height H of main cylindrical cavity 41610mm, height H of the upper stepped cylindrical cavity 42 and the lower stepped cylindrical cavity 437Is 1 mm.
As shown in fig. 5, the dimensions of the upper square patch panel 11 are: long L1=76.5mm, width W1=76.5mm, high H1=2mm, the dimensions of the upper cladding plate 12 are: long L2=66.5mm, width W2=4mm, high H2=2mm。
As shown in fig. 6, the dimensions of the middle square patch panel 21 are: l is3=94.2mm, width W3=94.2mm, high H3=2mm, the dimensions of the middle layer edge covering 22 are: long L4=84.2mm, width W4=7mm, high H4=2mm。
As shown in FIG. 7, the lower plate 3 has a length L5=108mm, width W5=108mm, high H5=2 mm. The dielectric block 7 has a size of length L8=25mm, width W8=25mm, high H8=4mm。
The offset of the two first feed pins 5 relative to the center of the upper plate 1 is R6=15 mm. Offset R of two second feed pins 6 relative to the centre of the mid-plane plate 2723mm, the offset of the two metallized vias 4 with respect to the center of the interlayer plate 2 is R6=15 mm. Offset L between the edge of the medium block 7 and the center of the first feed pin 5 or the second feed pin 66Is 4 mm.
The antenna manufactured in this embodiment was subjected to a simulation test, and the test results are described in detail below.
1. Return loss test
As shown in fig. 9, a return loss curve of the antenna is obtained through simulation, and it can be seen that the antenna of this embodiment can operate in the L1+ L2+ L5 frequency band. Wherein, S11 and S44 are the return loss of the middle layer plate 2, so that the antenna works in the L2+ L5 frequency band, and S22 and S33 are the return loss of the upper layer plate 1, so that the antenna works in the L1 frequency band.
2. Gain test
As shown in fig. 10, the gain curve of the antenna of this embodiment is obtained through simulation, and it can be seen that the antenna of this embodiment has a maximum gain of 7.51dB when the L2+ L5 frequency band is 1.229GHz, and has a maximum gain of 9.16dB when the L1 frequency band is 1.588GHz, and the frequency bands with gains above 5dB are 1.19-1.27GHz and 1.50-1.69GHz, which shows that the antenna of this embodiment has a higher gain than a general circularly polarized antenna.
3. Axial ratio test
As shown in fig. 11, an axial ratio curve of the antenna of the present embodiment is obtained through simulation, and it can be seen that the axial ratios of the antenna of the present embodiment are all less than 2 when the antenna operates in the L1+ L2+ L5 frequency band, which meets the general requirements.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.
Claims (10)
1. An air dielectric circular polarization antenna with a dielectric filling layer is characterized in that: comprises an upper plate, a middle plate, a lower plate, a medium filling layer, two metallized through holes, two first feed pins and two second feed pins,
the upper plate, the middle plate and the lower plate are arranged from top to bottom at intervals, the upper plate works in an L1 frequency band, the middle plate works in an L2 frequency band and an L5 frequency band, the lower plate is a reflecting plate, the metalized through holes are cylindrical metal pipes and are arranged between the middle plate and the lower plate; the first feed pin is arranged between the upper layer plate and the lower layer plate, and the lower part of the first feed pin is arranged in the metalized through hole; the second feed pin is arranged between the middle layer plate and the lower layer plate, the medium filling layer is arranged on the lower layer plate and is positioned around the first feed pin and the second feed pin, the feed phases of the two first feed pins form a 90-degree difference value, and the feed phases of the two second feed pins form a 90-degree difference value.
2. The air dielectric circular polarized antenna with dielectric filling layer of claim 1, wherein: the medium filling layer comprises four medium blocks, the dielectric constant of the medium blocks is 20, and the four medium blocks are uniformly arranged around the first feed pin and the second feed pin.
3. The air dielectric circular polarized antenna with dielectric filling layer of claim 2, wherein: the upper layer plate comprises an upper layer square patch plate and an upper layer edge covering plate which is distributed and connected around the upper layer square patch plate, and the length of the upper layer edge covering plate is smaller than that of the upper layer square patch plate, so that two upper layer port grooves in the vertical direction are formed at the four corners of the upper layer edge covering plate and the upper layer square patch plate;
the middle layer plate comprises a middle layer square patch plate and a middle layer edge covering plate which is connected to the periphery of the middle layer square patch plate in a distributed mode, and the length of the middle layer edge covering plate is smaller than that of the middle layer square patch plate, so that two middle layer port grooves in the vertical direction are formed in the four corners of the middle layer edge covering plate and the middle layer square patch plate.
4. The air dielectric circular polarized antenna with dielectric filling layer of claim 3, wherein: the dielectric block is made of ceramics, and the upper layer square patch board, the upper layer edge covering board, the middle layer square patch board, the middle layer edge covering board and the lower layer board are all made of aluminum materials.
5. The air dielectric circular polarized antenna with dielectric filling layer of claim 4, wherein: the metalized via hole is composed of a main cylindrical cavity with a hollow structure, an upper stepped cylindrical cavity and a lower stepped cylindrical cavity, wherein the upper stepped cylindrical cavity and the lower stepped cylindrical cavity are respectively positioned at the upper end and the lower end of the main cylindrical cavity; the lower layer plate is provided with two lower-layer stepped circular holes for fixing the lower-layer stepped cylindrical cavity and two lower-layer needle holes for the second feed needles to pass through; the middle-layer square patch plate is provided with two middle-layer stepped circular holes for fixing the upper stepped cylindrical cavity and two middle-layer needle holes for the second feed needles to pass through; the upper square patch board is provided with two upper needle holes for the first feed needles to pass through.
6. The air dielectric circular polarized antenna with dielectric filling layer of claim 5, wherein: the diameter phi of the first feed needle and the second feed needle5=1.4mm, thereforThe inner and outer radiuses of the main cylindrical cavity of the metallized through hole are respectively R4=1.5mm and R3=2 mm; the inner and outer radiuses of the upper stepped cylindrical cavity and the lower stepped cylindrical cavity are R respectively4=1.5mm and R2=2.5 mm; the height H of the main cylindrical cavity610mm, the height H of the upper stepped cylindrical cavity and the lower stepped cylindrical cavity7Is 1 mm.
7. The air dielectric circular polarized antenna with dielectric filling layer of claim 6, wherein: the radius of the upper layer pinhole is R1=0.75 mm; the radiuses of the two circular sections of the lower layer stepped circular hole and the middle layer stepped circular hole are R2=2.5mm and R3=2mm, the radius of the lower layer pinhole is R3=2mm。
8. The air dielectric circular polarized antenna with dielectric filling layer of claim 7, wherein: the size of the upper square patch board is as follows: long L1=76.5mm, width W1=76.5mm, high H1=2mm, the size of upper bound board is: long L2=66.5mm, width W2=4mm, high H2=2mm；
The size of the middle-layer square patch board is as follows: l is3=94.2mm, width W3=94.2mm, high H3=2mm, the size of middle layer bordure board is: long L4=84.2mm, width W4=7mm, high H4=2mm；
The lower plate has a long L-shaped size5=108mm, width W5=108mm, high H5=2mm。
9. The air dielectric circular polarized antenna with dielectric filling layer of claim 7, wherein: the size of the dielectric block is L8=25mm, width W8=25mm, high H8=4mm。
10. The air dielectric circular polarized antenna with dielectric filling layer of claim 9, wherein: the offset of the two first feed pins relative to the center of the upper plate is 15mm, the offset of the two second feed pins relative to the center of the middle plate is 23mm, the offset of the two metalized through holes relative to the center of the middle plate is 15mm, and the offset of the edge of the dielectric block relative to the center of the first feed pin or the center of the second feed pin is 4 mm.
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| CN201921607249.3U CN210350097U (en) | 2019-09-25 | 2019-09-25 | Air dielectric circular polarization antenna with dielectric filling layer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114824762A (en) * | 2022-05-20 | 2022-07-29 | 深圳市盛邦尔科技有限公司 | Double-frequency-band GNSS antenna based on double-layer metal support |
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2019
- 2019-09-25 CN CN201921607249.3U patent/CN210350097U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114824762A (en) * | 2022-05-20 | 2022-07-29 | 深圳市盛邦尔科技有限公司 | Double-frequency-band GNSS antenna based on double-layer metal support |
| CN114824762B (en) * | 2022-05-20 | 2024-04-05 | 深圳市盛邦尔科技有限公司 | Double-layer metal bracket-based dual-band GNSS antenna |
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Address after: No. 1203, Jinting Road, Jimei District, Xiamen City, Fujian Province Patentee after: Xiamen Songyuan Electronics Co.,Ltd. Address before: No. 1203, Jinting Road, Jimei District, Xiamen City, Fujian Province Patentee before: Xiamen Sunyear Electronics Co.,Ltd. |
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