CN212342814U - Printed antenna and electronic device - Google Patents
Printed antenna and electronic device Download PDFInfo
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- CN212342814U CN212342814U CN202020182026.3U CN202020182026U CN212342814U CN 212342814 U CN212342814 U CN 212342814U CN 202020182026 U CN202020182026 U CN 202020182026U CN 212342814 U CN212342814 U CN 212342814U
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- 230000005855 radiation Effects 0.000 claims abstract description 60
- 230000003071 parasitic effect Effects 0.000 claims abstract description 37
- 239000000758 substrate Substances 0.000 claims description 36
- 230000008878 coupling Effects 0.000 claims description 12
- 238000010168 coupling process Methods 0.000 claims description 12
- 238000005859 coupling reaction Methods 0.000 claims description 12
- 230000002349 favourable effect Effects 0.000 abstract description 4
- 238000004891 communication Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 230000005404 monopole Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 1
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Abstract
The utility model relates to a wireless communication technology field discloses a printed antenna and electronic equipment, printed antenna includes the medium base plate, be equipped with radiation branch knot, parasitic branch knot, first floor and feeder in the one side of medium base plate, the first end of feeder is the feed end, the second end of feeder with the radiation branch knot is connected, the radiation branch knot passes through first floor with the parasitic branch knot is connected, so that produce radiation current on the parasitic branch knot to improve the radiation characteristic of antenna, and the radiation branch knot with the parasitic branch knot sets up relatively, is favorable to reducing the antenna size.
Description
Technical Field
The utility model relates to a wireless communication technical field especially relates to a printed antenna and electronic equipment.
Background
Modern wireless communication systems require electronic devices to be miniaturized, integrated and portable, and the demand for miniaturized antenna designs is also increasing. The first floor of the antenna corresponding to the miniaturized monopole antenna is also small, but the monopole antenna is greatly influenced by the first metal floor, the radiation efficiency of the antenna is relatively low under the condition that the size of the first metal floor is small, and the size of the dipole antenna is usually one time of that of the monopole antenna, generally half wavelength, and the requirement of antenna miniaturization cannot be met.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a printing antenna and electronic equipment, its radiation characteristic that can improve the antenna satisfies the miniaturized demand of antenna simultaneously.
In order to solve the technical problem, the utility model provides a printed antenna, including the dielectric substrate, be equipped with radiation minor matters, parasitic minor matters, first floor and feeder in the one side of dielectric substrate, the first end of feeder is the feed end, the second end of feeder with the radiation minor matters is connected, the radiation minor matters passes through first floor with the parasitic minor matters is connected, the radiation minor matters with the parasitic minor matters sets up relatively.
As a preferred scheme, the radiation branch section comprises a first horizontal section, a second horizontal section and a first vertical section;
one end of the first horizontal section is connected with the first floor, the other end of the first horizontal section is connected with the second horizontal section through the first vertical section, and the second horizontal section is opposite to the first horizontal section; the length of the first horizontal segment is greater than the length of the second horizontal segment.
Preferably, the parasitic branch section comprises a third horizontal section, a fourth horizontal section and a second vertical section;
one end of the third horizontal section is connected with the first floor, the other end of the third horizontal section is connected with the fourth horizontal section through the second vertical section, and the fourth horizontal section is opposite to the third horizontal section; the length of the third horizontal segment is greater than the length of the fourth horizontal segment.
Preferably, the parasitic branch and the radiation branch are symmetrically arranged on the dielectric substrate.
Preferably, the second end of the feeder line is connected to the first vertical section, and the feeder line is disposed opposite to the first horizontal section.
Preferably, the distance between the second vertical section and the first floor is a first length, the distance between the third horizontal section and the first horizontal section is a second length, and the sum of the first length and the second length is 0.25 λ -0.5 λ; wherein λ is an operating wavelength of the printed antenna.
Preferably, a coupling branch is arranged on the other surface of the dielectric substrate, and the coupling branch and an integral structure formed by the radiation branch, the parasitic branch and the first floor are symmetrically distributed relative to the dielectric substrate.
Preferably, the dielectric substrate is an FR4 organic dielectric substrate.
In order to solve the same technical problem, the utility model provides an electronic equipment is still provided, include printed antenna, the feed end be used for being connected with the inner core of coaxial line, first floor is used for being connected with the outer core of coaxial line.
In order to solve the same technical problem, the present invention further provides an electronic device, including a PCB circuit and the printed antenna, wherein the PCB circuit includes a PCB floor, the PCB circuit is disposed on the dielectric substrate, and the first floor is connected to the PCB floor; the first floor is provided with a notch, and the feed end is arranged on the notch.
The utility model provides a printed antenna and electronic equipment, printed antenna include the dielectric substrate, be equipped with radiation minor matters, parasitic minor matters, first floor and feeder in the one side of dielectric substrate, the first end of feeder is the feed end, the second end of feeder with the radiation minor matters is connected, the radiation minor matters passes through first floor with the parasitic minor matters is connected, so that produce radiation current on the parasitic minor matters to improve the radiation characteristic of antenna, and the radiation minor matters with the parasitic minor matters sets up relatively, is favorable to reducing the antenna size.
Drawings
Fig. 1 is a schematic structural diagram of a printed antenna in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a coupling branch in an embodiment of the present invention;
fig. 3 is a schematic diagram of a notch formed in the first floor of the printed antenna according to an embodiment of the present invention;
fig. 4 is a standing wave diagram of a printed antenna in an embodiment of the invention;
fig. 5 is a graph of the radiation efficiency of a printed antenna in an embodiment of the invention;
fig. 6 is a radiation pattern of a printed antenna in an embodiment of the invention;
wherein, 1, a dielectric substrate; 2. a radiation branch; 21. a first horizontal segment; 22. a second horizontal segment; 23. a first vertical section; 3. parasitic branch knots; 31. a third horizontal segment; 32. a fourth horizontal segment; 33. a second vertical section; 4. a first floor panel; 41. a notch; 5. a feeder line; 51. a feed end; 6. and (6) coupling the branches.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
The utility model discloses an in the explanation, the description of upper and lower, left and right, preceding, back, position and top and bottom such as level and vertical is all injectd to figure 1, and when the placing means of printed antenna changes, the description of its corresponding position and top and bottom will also change according to the change of placing means, the utility model discloses do not describe herein repeatedly.
Please refer to fig. 1, the printed antenna according to the preferred embodiment of the present invention includes a dielectric substrate 1, a radiation branch 2, a parasitic branch 3, a first floor 4 and a feeder 5 are disposed on one side of the dielectric substrate 1, a first end of the feeder 5 is a feeding end 51, a second end of the feeder 5 is connected to the radiation branch 2, the radiation branch 2 is connected to the parasitic branch 3 through the first floor 4, and the radiation branch 2 is disposed opposite to the parasitic branch 3.
In the embodiment of the present invention, the printed antenna includes the dielectric substrate 1, be equipped with radiation branch 2, parasitic branch 3, first floor 4 and feeder 5 in the one side of dielectric substrate 1, the first end of feeder 5 is feed end 51, the second end of feeder 5 with radiation branch 2 connects, radiation branch 2 passes through first floor 4 with parasitic branch 3 connects, so that produce radiation current on the parasitic branch 3 to improve the radiation characteristic of antenna, and radiation branch 2 with parasitic branch 3 sets up relatively, is favorable to reducing the antenna size.
Referring to fig. 1, in an alternative embodiment, the radiation branch 2 includes a first horizontal segment 21, a second horizontal segment 22 and a first vertical segment 23; one end of the first horizontal segment 21 is connected with the first floor 4, the other end of the first horizontal segment 21 is connected with the second horizontal segment 22 through the first vertical segment 23, and the second horizontal segment 22 is arranged opposite to the first horizontal segment 21; the length of the first horizontal segment 21 is greater than the length of the second horizontal segment 22. The first horizontal section 21, the second horizontal section 22 and the first vertical section 23 form the radiating branch 2, and the first horizontal section 21, the first vertical section 23 and the feeder line 5 form an "F" shaped oscillator. In order to reduce the size of the antenna, the present embodiment bends the radiation branch, that is, adds the second horizontal segment 22 to the first vertical segment 23 of the radiation branch 2; in addition, in particular implementations, the resonant frequency of the antenna may be adjusted by adjusting the length of the second horizontal segment 22.
Preferably, as shown in fig. 1, the parasitic branch 3 includes a third horizontal segment 31, a fourth horizontal segment 32 and a second vertical segment 33; one end of the third horizontal segment 31 is connected with the first floor 4, the other end of the third horizontal segment 31 is connected with the fourth horizontal segment 32 through the second vertical segment 33, and the fourth horizontal segment 32 is arranged opposite to the third horizontal segment 31; the length of the third horizontal segment 31 is greater than the length of the fourth horizontal segment 32. And the fourth horizontal section 32 and the second vertical section 33 form a bent structure, so that the radiation current path of the antenna is increased, the resonant frequency of the antenna is adjusted, and the size of the antenna is further reduced.
Further, as shown in fig. 1, the parasitic stub 3 and the radiation stub 2 are symmetrically disposed on the dielectric substrate 1, so that the currents on the parasitic stub 3 and the radiation stub 2 form a half-wavelength sinusoidal distribution, which is equivalent to a current distribution of a dipole, so that the radiation characteristic of the printed antenna is similar to that of a dipole, and omnidirectional radiation can be achieved, as shown in fig. 6, and in addition, the pattern of the printed antenna is slightly affected by the first floor 4.
Referring to fig. 1, in the present embodiment, the second end of the feed line 5 is connected to the first vertical section 23, the feed line 5 is disposed opposite to the first horizontal section 21, that is, the feed line 5 is disposed between the first horizontal section 21 and the third horizontal section 31, so that the first horizontal section 21, the first vertical section 23 and the feed line 5 form an "F" shaped oscillator, and at the same time, the space on the dielectric substrate 1 is fully utilized, thereby further reducing the size of the antenna.
Referring to fig. 1, in the embodiment of the present invention, a distance between the second vertical section 33 and the first floor 4 is a first length W, a distance between the third horizontal section 31 and the first horizontal section 21 is a second length L, and a sum W + L of the first length W and the second length L is 0.25 λ -0.5 λ; where λ is the operating wavelength of the printed antenna, for example, the printed antenna in this example is applied to the 2.4GHz band of WLAN, and its corresponding operating wavelength λ is 125 mm. In a specific application, the larger the sum W + L of the first length W and the second length L is, the higher the antenna radiation efficiency is, but the larger the corresponding antenna size is, so that in actual use, a value of L, W may be selected in a compromise manner according to the required radiation efficiency and the size of the space where the antenna can be placed.
As shown in fig. 4 and 5, the printed antenna of this example operates at 2.45GHz, and the operating frequency band is 2.41GH to 2.5GHz, and the radiation efficiency of the antenna is greater than 90% in this operating frequency range. In this embodiment, the final size of the printed antenna is about 15mm x 19mm (0.12 λ x 0.15 λ), while the size of a conventional dipole antenna is twice that of a monopole antenna, typically half a wavelength, i.e. 0.5 λ, and it can be seen that the printed antenna provided in this embodiment is relatively small.
In the embodiment of the present invention, coupling branches 6 are disposed on the other side of the dielectric substrate 1, the radiation branches 2, the parasitic branches 3 and the whole structure of the first floor 4 and the coupling branches 6 are symmetrically distributed with respect to the dielectric substrate 1, as shown in fig. 1 and 2, the radiation branches 2, the parasitic branches 3 and the whole structure of the first floor 4 and the coupling branches 6 completely overlap each other in this embodiment. The coupling branch 6 is arranged on the other surface of the dielectric substrate 1, so that the antenna capacitance is increased, the standing wave of the antenna is improved, the resonance characteristic of the antenna is ensured, in addition, the coupling branch 6 participates in radiation, the antenna radiation efficiency is higher, in addition, the coupling branch 6 is arranged on the other surface of the dielectric substrate 1, the size of the dielectric substrate 1 does not need to be increased, and the antenna miniaturization is facilitated.
In the embodiment of the present invention, the dielectric substrate 1 may be FR4 organic dielectric substrate 1. Of course, the dielectric substrate 1 may also be made of other materials, which will not be described herein.
In order to solve the same technical problem, the utility model provides an electronic equipment is still provided, include printed antenna, feed end 51 is used for being connected with the inner core of coaxial line, first floor 4 is used for being connected with the outer core of coaxial line. In the embodiment of the present invention, the coaxial line pair is adopted to feed the printed antenna, for example, the printed antenna feeds through the 50 Ω coaxial line, i.e., the inner core of the coaxial line is connected to the feed end 51, the outer core of the coaxial line is connected to the first floor 4, so that the printed antenna can be connected to the RF system through the coaxial line to work. In a specific implementation, the electronic device further comprises a PCB circuit with a specific function, and the PCB circuit is arranged independently from the printed antenna, i.e. on a different PCB board.
In order to solve the same technical problem, the utility model also provides an electronic device, including the PCB circuit and the printed antenna, the PCB circuit includes the PCB floor, the PCB circuit is located on the dielectric substrate 1, the first floor 4 is connected with the PCB floor; the first floor 4 is provided with a notch 41, and the feeding end 51 is provided on the notch 41, as shown in fig. 3. In the specific implementation, the PCB circuit of the electronic device and the printed antenna are fused together, that is, the PCB circuit of the printed antenna electronic device is printed on the same PCB board, and can be connected to the feeding terminal 51 through the microstrip line via the notch 41, so that the printed antenna can be connected to the RF radio frequency system through the feeding line 5 for operation. In addition, the first floor 4 is connected with the PCB floor, so that the grounding size of the printed antenna is increased, and the radiation efficiency of the printed antenna is improved.
To sum up, the embodiment of the utility model provides a printed antenna and electronic equipment, printed antenna include dielectric substrate 1, be equipped with radiation branch knot 2, parasitic branch knot 3, first floor 4 and feeder 5 in the one side of dielectric substrate 1, the first end of feeder 5 is feed end 51, the second end of feeder 5 with radiation branch knot 2 is connected, radiation branch knot 2 passes through first floor 4 with parasitic branch knot 3 is connected, so that produce radiation current on the parasitic branch knot 3 to improve the radiation characteristic of antenna, and radiation branch knot 2 with parasitic branch knot 3 sets up relatively, is favorable to reducing the antenna size.
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 (10)
1. A printed antenna is characterized by comprising a dielectric substrate, wherein a radiation branch, a parasitic branch, a first floor and a feeder line are arranged on one surface of the dielectric substrate, the first end of the feeder line is a feed end, the second end of the feeder line is connected with the radiation branch, the radiation branch is connected with the parasitic branch through the first floor, and the radiation branch and the parasitic branch are arranged oppositely.
2. The printed antenna of claim 1, wherein the radiating branch comprises a first horizontal segment, a second horizontal segment, and a first vertical segment;
one end of the first horizontal section is connected with the first floor, the other end of the first horizontal section is connected with the second horizontal section through the first vertical section, and the second horizontal section is opposite to the first horizontal section; the length of the first horizontal segment is greater than the length of the second horizontal segment.
3. A printed antenna as in claim 2, wherein the parasitic stub comprises a third horizontal segment, a fourth horizontal segment, and a second vertical segment;
one end of the third horizontal section is connected with the first floor, the other end of the third horizontal section is connected with the fourth horizontal section through the second vertical section, and the fourth horizontal section is opposite to the third horizontal section; the length of the third horizontal segment is greater than the length of the fourth horizontal segment.
4. A printed antenna as in claim 3, wherein the parasitic stub and the radiating stub are symmetrically disposed on the dielectric substrate.
5. A printed antenna as in claim 2, wherein a second end of the feed line is connected to the first vertical segment, the feed line being disposed opposite the first horizontal segment.
6. The printed antenna of claim 3, wherein the distance between the second vertical segment and the first floor is a first length, the distance between the third horizontal segment and the first horizontal segment is a second length, and the sum of the first length and the second length is 0.25 λ and 0.5 λ; wherein λ is an operating wavelength of the printed antenna.
7. A printed antenna as claimed in any one of claims 1 to 6, wherein a coupling stub is provided on the other side of the dielectric substrate, and the coupling stub and the integral structure of the radiating stub, the parasitic stub and the first ground plane are symmetrically distributed with respect to the dielectric substrate.
8. A printed antenna according to any of claims 1 to 6, wherein the dielectric substrate is an FR4 organic dielectric substrate.
9. An electronic device comprising a printed antenna according to any of claims 1-8, the feeder end being adapted to be connected to an inner core of a coaxial line, and the first ground plane being adapted to be connected to an outer core of a coaxial line.
10. An electronic device comprising a PCB circuit and a printed antenna according to any of claims 1-8, the PCB circuit comprising a PCB floor, the PCB circuit being disposed on the dielectric substrate, the first floor being connected to the PCB floor; the first floor is provided with a notch, and the feed end is arranged on the notch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020182026.3U CN212342814U (en) | 2020-02-18 | 2020-02-18 | Printed antenna and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020182026.3U CN212342814U (en) | 2020-02-18 | 2020-02-18 | Printed antenna and electronic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212342814U true CN212342814U (en) | 2021-01-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020182026.3U Active CN212342814U (en) | 2020-02-18 | 2020-02-18 | Printed antenna and electronic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212342814U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113540790A (en) * | 2021-04-26 | 2021-10-22 | 深圳市宏电技术股份有限公司 | MIMO antenna and electronic equipment |
-
2020
- 2020-02-18 CN CN202020182026.3U patent/CN212342814U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113540790A (en) * | 2021-04-26 | 2021-10-22 | 深圳市宏电技术股份有限公司 | MIMO antenna and electronic equipment |
| CN113540790B (en) * | 2021-04-26 | 2023-12-29 | 深圳市宏电技术股份有限公司 | MIMO antenna and electronic equipment |
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