CN218300241U - Multi-band external antenna - Google Patents
Multi-band external antenna Download PDFInfo
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- CN218300241U CN218300241U CN202222427860.6U CN202222427860U CN218300241U CN 218300241 U CN218300241 U CN 218300241U CN 202222427860 U CN202222427860 U CN 202222427860U CN 218300241 U CN218300241 U CN 218300241U
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Abstract
The utility model belongs to the technical field of the antenna and specifically relates to multifrequency section external antenna. The antenna comprises an antenna body, wherein the antenna body consists of an antenna radiator, a dielectric layer and an antenna grounding layer, the dielectric layer is fixed between the antenna radiator and the antenna grounding layer, the antenna radiator is provided with a first antenna grounding surface, a second antenna grounding surface, an antenna feed pad, a first radiation unit, a second radiation unit, a third radiation unit, a fourth radiation unit, a fifth radiation unit, a sixth radiation unit, a first antenna pad, a second antenna pad, a third antenna pad and a fourth antenna pad, and the antenna grounding layer is provided with a third antenna grounding surface. The utility model discloses can be under the prerequisite that does not change PCB and FPC design, through changing the reactance value of loading on the antenna, carry out effectual regulation to the input characteristic and the radiation characteristic of antenna. The performance of the antenna in actual working can be improved, the PCB and the FPC can be shared, and the cost of antenna volume production is greatly reduced.
Description
Technical Field
The utility model belongs to the technical field of the antenna and specifically relates to multifrequency section external antenna.
Background
Due to the precise size and easy production, PCB and FPC planar antennas are widely used in mobile terminal antenna design. However, the mobile terminal antenna has a complex usage environment, and a fixed antenna design is difficult to meet various practical requirements, thereby increasing the mass production cost of the antenna.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: in order to solve the technical problem described in the background art, the utility model provides a multiband external antenna. The input characteristic and the radiation characteristic of the antenna can be effectively adjusted by changing the reactance value loaded on the antenna on the premise of not changing the design of the PCB and the FPC. The performance of the antenna in actual working can be improved, the PCB and the FPC can be shared, and the cost of mass production of the antenna is greatly reduced.
The utility model provides a technical scheme that its technical problem adopted is:
a multi-band external antenna comprises an antenna body, wherein the antenna body is composed of an antenna radiation body, a dielectric layer and an antenna grounding layer, the dielectric layer is fixed between the antenna radiation body and the antenna grounding layer, an antenna ground plane I, an antenna ground plane II, an antenna feed bonding pad, a first radiation unit, a second radiation unit, a third radiation unit, a fourth radiation unit, a fifth radiation unit, a sixth radiation unit, an antenna bonding pad I, an antenna bonding pad II, an antenna bonding pad III and an antenna bonding pad IV are arranged on the antenna radiation body, and an antenna ground plane III is arranged on the antenna grounding layer.
Specifically, the antenna feed pad is located on the first radiation unit, the antenna feed pad is located between the first antenna ground plane and the second antenna ground plane, a gap between the first antenna ground plane and the antenna feed pad is 0.5mm, the first antenna ground plane and the second antenna ground plane penetrate through the antenna main body, and the first antenna ground plane and the second antenna ground plane are connected to the third antenna ground plane.
Specifically, the first radiating element, the third radiating element and the fourth radiating element are located on the same straight line, a gap between the third radiating element and the fourth radiating element is 0.5mm, and a gap between the third radiating element and the fourth radiating element is located between the first antenna pad and the second antenna pad.
Specifically, the second radiation unit is L-shaped, the first radiation unit and the third radiation unit are respectively connected to the top end of the second radiation unit, a gap between the tail end of the second radiation unit and the second antenna ground plane is 0.5mm, one straight edge of the second radiation unit is perpendicular to the second antenna ground plane, and a gap between the tail end of the second radiation unit and the second antenna ground plane is located between the third antenna pad and the fourth antenna pad.
Specifically, the fifth radiation unit and the sixth radiation unit are both L-shaped, the fourth radiation unit is located between the fifth radiation unit and the sixth radiation unit, and the fourth radiation unit, the fifth radiation unit, and the sixth radiation unit form a chevron-shaped radiator.
Specifically, the antenna main body is a double-sided copper-clad PCB or FPC board.
The beneficial effects of the utility model are that: the utility model provides a multifrequency section external antenna. The input characteristic and the radiation characteristic of the antenna can be effectively adjusted by changing the reactance value loaded on the antenna on the premise of not changing the design of the PCB and the FPC. The performance of the antenna in actual working can be improved, the PCB and the FPC can be shared, and the cost of mass production of the antenna is greatly reduced.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a front view of the present invention;
fig. 2 is a rear view of the present invention;
fig. 3 is a bottom view of the present invention;
in the figure, 1 is an antenna radiator, 2 is a dielectric layer, 3 is an antenna ground layer, 4 is an antenna ground plane I, 5 is an antenna ground plane II, 6 is an antenna feed pad, 7 is a first radiation unit, 8 is a second radiation unit, 9 is a third radiation unit, 10 is a fourth radiation unit, 11 is a fifth radiation unit, 12 is a sixth radiation unit, and 13.
The antenna comprises an antenna ground plane III, 14 antenna bonding pads I, 15 antenna bonding pads II, 16 antenna bonding pads III, 17 antenna bonding pads IV.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
Fig. 1 is a front view of the present invention; fig. 2 is a rear view of the present invention; fig. 3 is a bottom view of the present invention.
Referring to fig. 1, fig. 2, and fig. 3, a multi-band external antenna includes an antenna main body, where the antenna main body includes an antenna radiator 1, a dielectric layer 2, and an antenna ground layer 3, the dielectric layer 2 is fixed between the antenna radiator 1 and the antenna ground layer 3, the antenna radiator 1 is provided with a first antenna ground plane 4, a second antenna ground plane 5, an antenna feed pad 6, a first radiation unit 7, a second radiation unit 8, a third radiation unit 9, a fourth radiation unit 10, a fifth radiation unit 11, a sixth radiation unit 12, a first antenna pad 14, a second antenna pad 15, a third antenna pad 16, and a fourth antenna pad 17, and the antenna ground layer 3 is provided with a third antenna ground plane 13. The antenna main body is a double-sided copper-clad PCB or FPC board. The present application may employ a 50 ohm coaxial line to feed the antenna.
The antenna feed pad 6 is located on the first radiation unit 7, the antenna feed pad 6 is located between the antenna ground plane one 4 and the antenna ground plane two 5, a gap between the antenna feed pad 6 and the antenna ground plane one 4 is 0.5mm, the antenna ground plane one 4 and the antenna ground plane two 5 penetrate through the antenna main body, and the antenna ground plane one 4 and the antenna ground plane two 5 are connected to the antenna ground plane three 13.
The first radiating element 7, the third radiating element 9 and the fourth radiating element 10 are located on the same straight line, a gap between the third radiating element 9 and the fourth radiating element 10 is 0.5mm, and a gap between the third radiating element 9 and the fourth radiating element 10 is located between the first antenna pad 14 and the second antenna pad 15. Patch elements may be used to connect the third radiating element 9 and the fourth radiating element 10 in different impedance forms.
The second radiation unit 8 is L-shaped, the first radiation unit 7 and the third radiation unit 9 are respectively connected to the top end of the second radiation unit 8, the gap between the tail end of the second radiation unit 8 and the second antenna grounding surface 5 is 0.5mm, one straight edge of the second radiation unit 8 is perpendicular to the second antenna grounding surface 5, and the gap between the tail end of the second radiation unit 8 and the second antenna grounding surface 5 is located between the third antenna pad 16 and the fourth antenna pad 17. Patch elements may be used to connect the second radiating element 8 and the second antenna groundplane 5 in different impedance forms.
The fifth radiation unit 11 and the sixth radiation unit 12 are both L-shaped, the fourth radiation unit 10 is located between the fifth radiation unit 11 and the sixth radiation unit 12, and the fourth radiation unit 10, the fifth radiation unit 11 and the sixth radiation unit 12 form a chevron-shaped radiator.
When the third radiating element 9 and the fourth radiating element 10 are in the off state, and the second radiating element 8 and the antenna ground plane second 5 are also in the off state, the antenna radiates two resonant branches: the first and second radiating elements 7 and 8 constitute a first resonant branch W1, and the first and third radiating elements 7 and 9 constitute a second resonant branch W2. Adjusting the lengths of the first and second resonant branches allows the two resonant branches to cover different frequency bands, for example, the first resonant branch covers a Wi-Fi band of 2.4-2.5GHz and the second resonant branch covers a Wi-Fi band of 5.15-5.85 GHz.
After connecting second radiating element 8 and antenna ground plane two 5 with reactive element, can change the antenna resonant frequency that second resonance branch W2 corresponds through different reactive element values to realize under the prerequisite that does not change PCB circuit layout, adjust antenna resonant frequency's effect, thereby make PCB antenna design have stronger volume productibility.
After the third radiation unit 9 and the fourth radiation unit 10 are connected by the reactance element, the chevron radiator formed by the first resonant branch W1 and the fourth radiation unit 10, the fifth radiation unit 11, and the sixth radiation unit 12 is directly connected, the antenna electrical length of the resonant branch is further increased, the corresponding antenna input resonant frequency is reduced, and the use requirement of the antenna in the LTE 700MHz frequency band can be met. Different reactance values are adopted, so that not only can the frequency bandwidth of the branch be changed, but also the antenna radiation pattern of the branch can be adjusted, and the antenna can meet more use scenes. The fifth radiation unit 11 and the sixth radiation unit 12 with different lengths are selected, so that the resonance branch can generate two different resonances at low frequency, the antenna has three independent and adjustable frequency bands, and the working requirement of the full frequency band of the mobile terminal antenna is met. The reactive element to be loaded may be a zero-ohm resistor, depending on the actual situation.
The sizes of the first radiating unit 7, the second radiating unit 8, the third radiating unit 9, the fourth radiating unit 10, the fifth radiating unit 11 and the sixth radiating unit 12 are changed, and the loaded reactance element value is adjusted, so that the antenna can meet the antenna bandwidth requirements of various mobile terminal devices such as a wireless local area network and 5G.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the description, and must be determined according to the scope of the claims.
Claims (6)
1. The multi-band external antenna comprises an antenna main body and is characterized in that the antenna main body is composed of an antenna radiation body (1), a dielectric layer (2) and an antenna grounding layer (3), the dielectric layer (2) is fixed between the antenna radiation body (1) and the antenna grounding layer (3), an antenna grounding surface I (4), an antenna grounding surface II (5), an antenna feed pad (6), a first radiation unit (7), a second radiation unit (8), a third radiation unit (9), a fourth radiation unit (10), a fifth radiation unit (11), a sixth radiation unit (12), an antenna pad I (14), an antenna pad II (15), an antenna pad III (16) and an antenna pad IV (17) are arranged on the antenna radiation body (1), and an antenna grounding surface III (13) is arranged on the antenna grounding layer (3).
2. The multiple band external antenna of claim 1, wherein: the antenna feed pad (6) is located on the first radiating unit (7), the antenna feed pad (6) is located between the antenna ground plane I (4) and the antenna ground plane II (5), the gap between the antenna feed pad (6) and the antenna ground plane I (4) is 0.5mm, the antenna ground plane I (4) and the antenna ground plane II (5) penetrate through the antenna body, and the antenna ground plane I (4) and the antenna ground plane II (5) are connected to the antenna ground plane III (13).
3. The multiple band external antenna of claim 1, wherein: the first radiating unit (7), the third radiating unit (9) and the fourth radiating unit (10) are located on the same straight line, a gap between the third radiating unit (9) and the fourth radiating unit (10) is 0.5mm, and a gap between the third radiating unit (9) and the fourth radiating unit (10) is located between the first antenna pad (14) and the second antenna pad (15).
4. The multi-band external antenna of claim 1, wherein: the second radiation unit (8) is L-shaped, the first radiation unit (7) and the third radiation unit (9) are respectively connected to the top end of the second radiation unit (8), the gap between the tail end of the second radiation unit (8) and the antenna grounding surface II (5) is 0.5mm, one straight edge of the second radiation unit (8) is perpendicular to the antenna grounding surface II (5), and the gap between the tail end of the second radiation unit (8) and the antenna grounding surface II (5) is located between the antenna bonding pad III (16) and the antenna bonding pad IV (17).
5. The multiple band external antenna of claim 1, wherein: the fifth radiation unit (11) and the sixth radiation unit (12) are L-shaped, the fourth radiation unit (10) is located between the fifth radiation unit (11) and the sixth radiation unit (12), and the fourth radiation unit (10), the fifth radiation unit (11) and the sixth radiation unit (12) form a chevron-shaped radiator.
6. The multiple band external antenna of claim 1, wherein: the antenna main body is a double-sided copper-clad PCB or FPC board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222427860.6U CN218300241U (en) | 2022-09-14 | 2022-09-14 | Multi-band external antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222427860.6U CN218300241U (en) | 2022-09-14 | 2022-09-14 | Multi-band external antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218300241U true CN218300241U (en) | 2023-01-13 |
Family
ID=84814057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222427860.6U Active CN218300241U (en) | 2022-09-14 | 2022-09-14 | Multi-band external antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218300241U (en) |
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2022
- 2022-09-14 CN CN202222427860.6U patent/CN218300241U/en active Active
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