CN211578981U - Dipole printed antenna and electronic device - Google Patents
Dipole printed antenna and electronic device Download PDFInfo
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- CN211578981U CN211578981U CN202020166229.3U CN202020166229U CN211578981U CN 211578981 U CN211578981 U CN 211578981U CN 202020166229 U CN202020166229 U CN 202020166229U CN 211578981 U CN211578981 U CN 211578981U
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- balun
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- printed antenna
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Abstract
The utility model relates to the technical field of antenna, a dipole printed antenna is disclosed, including base plate, balun and two dipole arms, the balun locates two between the dipole arms, and the first end of balun is connected with one of them dipole arm, the second end of balun is connected with another dipole arm; one of the dipole arms is provided with a grounding end, the other dipole arm is provided with a feeding end, the dipole arms are alternately distributed on two sides of the substrate through a plurality of first metal through holes, single-side routing is replaced by double-side routing to enable the layout of the antenna to be more compact, and therefore miniaturization of the antenna is facilitated.
Description
Technical Field
The utility model relates to an antenna technology field especially relates to a dipole printed antenna and electronic equipment.
Background
At present, modern wireless communication systems require electronic devices to be miniaturized, integrated and portable, and therefore, the demand for miniaturized antenna designs is also increasing. In the prior art, a printed antenna is generally a single-sided trace, which mainly achieves the purpose of antenna miniaturization by reducing antenna traces, however, this way of reducing antenna traces usually results in the reduction of antenna performance.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a dipole printed antenna and electronic equipment, it can avoid prior art to walk the problem that the line reaches the antenna miniaturization and leads to the reduction of antenna performance through reducing the antenna.
In order to solve the above technical problem, the present invention provides a dipole printed antenna, including a substrate, a balun and two dipole arms, wherein the balun is disposed between the two dipole arms, and a first end of the balun is connected to one of the dipole arms, and a second end of the balun is connected to the other dipole arm; one of the dipole arms is provided with a grounding end, and the other dipole arm is provided with a feeding end; wherein the dipole arms are alternately distributed on both sides of the substrate through a plurality of first metal vias.
As a preferred scheme, the dipole arms are alternately distributed on two sides of the substrate through a plurality of first metal vias, specifically:
the dipole arm comprises a plurality of first branches and a plurality of second branches, the first branches are sequentially arranged on the first surface of the substrate, the second branches are sequentially arranged on the second surface of the substrate, and the first branches and the second branches are sequentially connected through a plurality of first metal through holes.
Preferably, the dipole arms are in a zigzag routing structure.
Preferably, the ground terminal is disposed on the second branch of one of the dipole arms connected to the first end of the balun, and the feeding terminal is disposed on the second branch of the other dipole arm connected to the second end of the balun.
Preferably, the dipole arm further includes at least one first shorting strip and at least one second shorting strip, where the first shorting strip is used to connect two adjacent first branches, and the second shorting strip is used to connect two adjacent second branches.
As a preferred scheme, the balun includes a first vertical section, a second vertical section, a third vertical section, a fourth vertical section, a first horizontal section, a second horizontal section, and a third horizontal section;
one end of the first vertical section is a first end of the balun, the other end of the first vertical section is connected with one end of the second vertical section through the first horizontal section, the other end of the second vertical section is connected with one end of the third vertical section through the second horizontal section, the other end of the third vertical section is connected with one end of the fourth vertical section through the third horizontal section, and the other end of the fourth vertical section is a second end of the balun; the first horizontal segment and the third horizontal segment are respectively arranged opposite to the second horizontal segment.
Preferably, the dipole printed antenna further includes a first pad, the first pad is disposed on the first surface of the substrate, the feeding end is disposed on the second surface of the substrate, and the first pad is connected to the feeding end through a second metal via hole.
Preferably, the dipole printed antenna further includes a second pad, the second pad is disposed on the first surface of the substrate, the ground terminal is disposed on the second surface of the substrate, and the second pad is connected to the ground terminal through a third metal via.
In order to solve the same technical problem, the utility model also provides an electronic equipment, include dipole printed antenna.
The utility model provides a dipole printed antenna, including base plate, balun and two dipole arms, the balun locates two between the dipole arm, and the first end of balun is connected with one of them dipole arm, the second end of balun is connected with another dipole arm; one of the dipole arms is provided with a grounding end, the other dipole arm is provided with a feeding end, the dipole arms are alternately distributed on two sides of the substrate through a plurality of first metal through holes, single-side routing is replaced by double-side routing to enable the layout of the antenna to be more compact, and therefore miniaturization of the antenna is facilitated.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a dipole printed antenna provided by the present invention;
fig. 2 is an antenna standing wave comparison diagram of the dipole printed antenna provided by the present invention before and after setting the balun;
fig. 3 is an antenna standing wave diagram of one embodiment of a dipole printed antenna provided by the present invention;
fig. 4 is an antenna H-plane radiation pattern of one embodiment of a dipole printed antenna provided by the present invention;
wherein, 1, a substrate; 2. a first branch section; 3. a second branch knot; 4. a first metal via; 5. a balun; 51. a feed end; 52. a ground terminal; 53. a first vertical section; 54. a second vertical section; 55. a third vertical section; 56. a fourth vertical section; 57. a first horizontal segment; 58. a second horizontal segment; 59. a third horizontal segment; 6. a first shorting pad; 7. a second shorting pad; 10. a first pad; 11. a second bonding pad.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Please refer to fig. 1, which is a schematic structural diagram of an embodiment of a dipole printed antenna according to the present invention.
The utility model discloses a dipole printed antenna of preferred embodiment, including base plate 1, balun 5 and two dipole arms, balun 5 locates between two said dipole arms, and the first end of balun 5 is connected with one of them said dipole arm, the second end of balun 5 is connected with another said dipole arm; one of the dipole arms is provided with a grounding terminal 52, and the other dipole arm is provided with a feeding terminal 51; wherein the dipole arms are alternately distributed on both sides of the substrate 1 through a plurality of first metal vias 4.
In the embodiment of the present invention, the dipole printed antenna includes a substrate 1, a balun 5 and two dipole arms, the balun 5 is disposed between the two dipole arms, and a first end of the balun 5 is connected to one of the dipole arms, and a second end of the balun 5 is connected to the other dipole arm; one of the dipole arms is provided with a grounding terminal 52, and the other dipole arm is provided with a feeding terminal 51, wherein the dipole arms are alternately distributed on two sides of the substrate 1 through a plurality of first metal via holes 4, and the double-sided routing replaces single-sided routing to make the antenna layout more compact, thereby being beneficial to the miniaturization of the antenna, in addition, the first metal via holes 4 replace partial microstrip routing, and the size of the antenna is further reduced.
Preferably, the dipole printed antenna uses FR4 organic medium with a thickness of 0.8mm as the substrate 1.
Referring to fig. 1, in the embodiment of the present invention, the dipole arms are alternately distributed on two sides of the substrate 1 through a plurality of first metal vias 4, specifically:
the dipole arm includes a plurality of first minor matters 2 and a plurality of second minor matters 3, and is a plurality of first minor matters 2 are arranged in proper order on the first face of base plate 1, and is a plurality of second minor matters 3 are arranged in proper order on the second face of base plate 1, and is a plurality of first minor matters 2 and a plurality of second minor matters 3 connect gradually through a plurality of first metal via holes 4.
In a specific implementation, the plurality of first branches 2 may be the same or different; the plurality of second branches 3 may be the same or different; the first branch 2 and the second branch 3 may be the same or different. In addition, the distance between two adjacent first branches 2 is 0.5 mm-1.5 mm, and the distance between two adjacent second branches 3 is 0.5 mm-1.5 mm. The smaller the distance between the adjacent branches is, the smaller the overall size of the antenna is, and the larger the coupling between the adjacent branches is, which causes the lower the radiation efficiency of the antenna, so that the distance between the adjacent branches can be selected to be 0.5mm to 1.5mm according to the required compromise of the antenna size and the radiation efficiency, and of course, the distance between the two adjacent first branches 2 and the two adjacent second branches 3 can also be set according to the actual requirements.
Preferably, the dipole arms are in a zigzag trace structure, and specifically, the projections of the dipole arms on the substrate 1 are in a zigzag trace structure, as shown in fig. 1.
In an alternative embodiment, for facilitating feeding, the grounding terminal 52 is disposed on the second branch 3 of one of the dipole arms connected to the first end of the balun, and the feeding terminal 51 is disposed on the second branch 3 of the other dipole arm connected to the second end of the balun, that is, the grounding terminal 52 and the feeding terminal 51 are disposed on the same surface of the substrate 1, so that feeding of the dipole printed antenna is facilitated.
Referring to fig. 1, in an alternative embodiment, the dipole arm further includes at least one first shorting tab 6 and at least one second shorting tab 7, where the first shorting tab 6 is used to connect two adjacent first branches 2, and the second shorting tab 7 is used to connect two adjacent second branches 3. At most one first short-circuit piece 6 is arranged between every two adjacent first branches 2, at most one second short-circuit piece 7 is arranged between every two adjacent second branches 3, and therefore the resonance frequency points of the antenna can be adjusted without arranging short-circuit pieces on every two adjacent branches. In addition, two adjacent short circuit pieces are not located at the same horizontal line, and because currents at two ends of the short circuit pieces are small relative to other positions, the short circuit pieces can be added at positions with small radiation currents in order not to influence normal radiation currents, and the positions where the radiation currents of the front and back wiring of the antenna are minimum are not located at the same horizontal line.
In an alternative embodiment, shown in fig. 1 and 2, the balun 5 comprises a first vertical segment 53, a second vertical segment 54, a third vertical segment 55, a fourth vertical segment 56, a first horizontal segment 57, a second horizontal segment 58 and a third horizontal segment 59; one end of the first vertical section 53 is a first end of the balun 5, the other end of the first vertical section 53 is connected with one end of the second vertical section 54 through the first horizontal section 57, the other end of the second vertical section 54 is connected with one end of the third vertical section 55 through the second horizontal section 58, the other end of the third vertical section 55 is connected with one end of the fourth vertical section 56 through the third horizontal section 59, and the other end of the fourth vertical section 56 is a second end of the balun 5; the first horizontal section 57 and the third horizontal section 59 are disposed opposite to the second horizontal section 58, respectively. Balun 5 can improve the impedance match of antenna port, makes two current balance on the dipole arm, and balun 5 needs sufficient length just can make two dipole arm current balance distributes, in addition, in order to reduce the whole size of antenna, the embodiment of the utility model provides a through setting up first vertical section 53, second vertical section 54, third vertical section 55, fourth vertical section 56, first horizontal segment 57, second horizontal segment 58 and third horizontal segment 59, in order to right balun 5 walks the line and buckles to reduce the whole size of antenna.
Referring to fig. 1, further, the dipole printed antenna further includes a first pad 10, the first pad 10 is disposed on a first surface of the substrate 1, the feeding end 51 is disposed on a second surface of the substrate 1, and the first pad 10 is connected to the feeding end 51 through a second metal via; the dipole printed antenna further comprises a second pad 11, the second pad 11 is disposed on the first surface of the substrate 1, the ground terminal 52 is disposed on the second surface of the substrate 1, and the second pad 11 is connected to the ground terminal 52 through a third metal via hole. The size of pad is bigger, and the embodiment of the utility model provides a to be located the first pad 10 of the first face of base plate 1 and be connected with the feed end 51 that is located the second face of base plate 1 through the second metal via hole, the second pad 11 that is located the first face of base plate 1 is connected with the earthing terminal 52 that is located the second face of base plate 1 through the third metal via hole, can further reduce antenna size. In a specific application, a 50 Ω coaxial line may be used for feeding, the inner conductor of the coaxial line is connected to the first pad 10, the outer conductor of the coaxial line is connected to the second pad 11, and the dipole printed antenna may be connected to an RF system through the coaxial line for operation.
In addition, in a specific implementation, the first pad 10 and the second pad 11 may have a rectangular structure, and in order to reduce the occupied size of the pads in the length direction of the substrate 1, the first pad 10 and the second pad 11 may be placed by rotating 45 °, as shown in fig. 1.
In order to solve the same technical problem, the utility model also provides an electronic equipment, include dipole printed antenna. The dipole printed antenna can be applied to a 2.4GHz frequency band of a WLAN, and the electronic equipment can be products with a 2G wifi function such as an IPC (Internet protocol camera), a router and a flat panel. Referring to fig. 3 and 4, the working frequency band of the dipole printed antenna is 2.39GHz to 2.51GHz, and the dipole printed antenna can be applied to wifi products with 2.4GHz, and in addition, the dipole printed antenna has an omnidirectional radiation characteristic.
In summary, the embodiment of the present invention provides a dipole printed antenna, including a substrate 1, a balun 5 and two dipole arms, where the balun 5 is disposed between the two dipole arms, and a first end of the balun 5 is connected to one of the dipole arms, and a second end of the balun 5 is connected to the other dipole arm; one of the dipole arms is provided with a grounding terminal 52, and the other dipole arm is provided with a feeding terminal 51, wherein the dipole arms are alternately distributed on two sides of the substrate 1 through a plurality of first metal via holes 4, and the double-sided routing replaces single-sided routing to make the antenna layout more compact, thereby being beneficial to the miniaturization of the antenna, in addition, the first metal via holes 4 replace partial micro-strip routing, so that the dielectric loading effect can be better exerted, and the size of the antenna is further reduced.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (9)
1. A dipole printed antenna comprising a substrate, a balun and two dipole arms, said balun being disposed between said dipole arms and having a first end connected to one of said dipole arms and a second end connected to the other of said dipole arms; one of the dipole arms is provided with a grounding end, and the other dipole arm is provided with a feeding end; wherein the dipole arms are alternately distributed on both sides of the substrate through a plurality of first metal vias.
2. The dipole printed antenna of claim 1, wherein said dipole arms are alternately distributed on both sides of said substrate by a plurality of first metal vias, in particular:
the dipole arm comprises a plurality of first branches and a plurality of second branches, the first branches are sequentially arranged on the first surface of the substrate, the second branches are sequentially arranged on the second surface of the substrate, and the first branches and the second branches are sequentially connected through a plurality of first metal through holes.
3. The dipole printed antenna of claim 2, wherein said dipole arms are in a zig-zag trace configuration.
4. The dipole printed antenna of claim 2, wherein said ground terminal is disposed on a second leg of one of said dipole arms connected to a first end of said balun and said feed terminal is disposed on a second leg of another of said dipole arms connected to a second end of said balun.
5. The dipole printed antenna of claim 2, said dipole arms further comprising at least one first shorting tab for connecting adjacent ones of said first legs and at least one second shorting tab for connecting adjacent ones of said second legs.
6. The dipole printed antenna of any of claims 1-5, wherein said balun includes a first vertical segment, a second vertical segment, a third vertical segment, a fourth vertical segment, a first horizontal segment, a second horizontal segment, and a third horizontal segment;
one end of the first vertical section is a first end of the balun, the other end of the first vertical section is connected with one end of the second vertical section through the first horizontal section, the other end of the second vertical section is connected with one end of the third vertical section through the second horizontal section, the other end of the third vertical section is connected with one end of the fourth vertical section through the third horizontal section, and the other end of the fourth vertical section is a second end of the balun; the first horizontal segment and the third horizontal segment are respectively arranged opposite to the second horizontal segment.
7. A dipole printed antenna according to any of the claims 1-5, further comprising a first pad provided on the first side of the substrate, wherein the feeding terminal is provided on the second side of the substrate, and wherein the first pad is connected to the feeding terminal by a second metal via.
8. A dipole printed antenna according to any of claims 1-5, further comprising a second pad provided on the first side of the substrate, the ground terminal provided on the second side of the substrate, the second pad being connected to the ground terminal by a third metal via.
9. An electronic device comprising a dipole printed antenna according to any of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020166229.3U CN211578981U (en) | 2020-02-12 | 2020-02-12 | Dipole printed antenna and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020166229.3U CN211578981U (en) | 2020-02-12 | 2020-02-12 | Dipole printed antenna and electronic device |
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| Publication Number | Publication Date |
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| CN211578981U true CN211578981U (en) | 2020-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020166229.3U Active CN211578981U (en) | 2020-02-12 | 2020-02-12 | Dipole printed antenna and electronic device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112688054A (en) * | 2020-12-08 | 2021-04-20 | 武汉驷腾科技发展有限公司 | High-performance wearable AIS antenna |
-
2020
- 2020-02-12 CN CN202020166229.3U patent/CN211578981U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112688054A (en) * | 2020-12-08 | 2021-04-20 | 武汉驷腾科技发展有限公司 | High-performance wearable AIS antenna |
| CN112688054B (en) * | 2020-12-08 | 2024-05-03 | 武汉驷腾科技发展有限公司 | High-performance wearable AIS antenna |
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