CN207781886U - A kind of microstrip slot antenna - Google Patents
A kind of microstrip slot antenna Download PDFInfo
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- CN207781886U CN207781886U CN201721844881.0U CN201721844881U CN207781886U CN 207781886 U CN207781886 U CN 207781886U CN 201721844881 U CN201721844881 U CN 201721844881U CN 207781886 U CN207781886 U CN 207781886U
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- metal patch
- ground floor
- substrate
- shaped gap
- patch
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Abstract
The utility model discloses a kind of microstrip slot antennas,It is related to antenna product field,Including substrate,The side of substrate is provided with ground floor,The other side of substrate is provided with microstrip feed line and radiator,L-shaped gap is provided on ground floor,Ground floor edge above the long side of L-shaped gap is provided with the second ground floor,Second ground floor perpendicular to ground floor and between form rectangular aperture,The side that rectangular aperture is located on ground floor is parallel with L-shaped gap long side,Radiator is located at L-shaped gap in the corresponding position region of the substrate other side,Radiator includes the first metal patch,Second metal patch and third metal patch,One end of first metal patch and the end of microstrip feed line connect,The other end of first metal patch is connect with the end of the end of the second metal patch and third metal patch,The other end of third metal patch is located at L-shaped gap short side lower part in the corresponding position region of the substrate other side.A kind of microstrip slot antenna of the utility model, antenna size is small, effectively covers low-frequency range LTE700.
Description
Technical field
The utility model is related to antenna product field, more particularly to a kind of microstrip slot antenna.
Background technology
Conventional slot antennas is that cutting on the metal surface is portalled or gap is constituted, the working method and dipole of slot antenna
Sub-antenna is similar, and gap is equivalent to the dipole antennas of λ/2, and coupling is carried out by the microstrip line open circuit end and gap of gap side
It closes, driving electromagnetic wave is radiated by gap to free space.
Slot antenna has coplanar structure, small in volume, it is easy to accomplish the conformal design with equipment, increasingly
More is used on mobile phone.But the narrow problem of the working band of slot antenna is not well solved yet, antenna for mobile phone is set
The target of meter is can to meet miniaturization, ultra wide band, multifrequency simultaneously, and antenna for mobile phone is in order to effectively cover low-frequency range
LTE700 usually increases antenna size to widen low frequency bandwidth, but due to increasing antenna size, antenna for mobile phone is caused to design
Target cannot meet the requirement of miniaturization.
Utility model content
For disadvantages described above, the purpose of this utility model is to provide a kind of microstrip slot antenna, the microstrip slot antenna ruler
It is very little small, effectively cover low-frequency range LTE700.
To achieve the above object, the technical solution of the utility model is：
The side of a kind of microstrip slot antenna, including substrate, the substrate is provided with ground floor, the other side of the substrate
It is provided with microstrip feed line and radiator, L-shaped gap is provided on the ground floor, is had and ground above the long side of the L-shaped gap
Face layer the second ground floor connected vertically, second ground floor have rectangular aperture, the long side of the rectangular aperture and ground
The intersection of layer and the second ground floor partially overlaps, and the rectangular aperture long side is parallel with L-shaped gap long side, the L-shaped seam
The corresponding substrate other side of gap is equipped with the radiator, and the radiator includes the first metal patch, is located at described first
The second metal patch above metal patch and the third metal patch below first metal patch, first gold medal
Belong to patch and the second metal patch is located at the L-shaped gap long side lower part, institute in the substrate other side corresponding position region
The one end for stating the first metal patch is connect with the end of the microstrip feed line, the other end of first metal patch and described the
The end of two metal patches is connected with the end of third metal patch, and third metal patch lower part is located at the L-shaped gap
Short side is in the substrate other side corresponding position region.
Preferably, patch capacitor is provided in the short side of the L-shaped gap, the direction of the patch capacitor and the L-shaped
Gap long side direction is parallel.
Preferably, first metal patch, the second metal patch and third metal patch are rectangular patch.
Preferably, the microstrip feed line is perpendicular to first metal patch.
Preferably, one end of first metal patch respectively with the end of second metal patch and third metal
The end vertical of patch connects.
Preferably, second ground floor is arranged on vertical substrate, the vertical substrate is vertically set on the base
On plate.
After using above-mentioned technical proposal, the utility model has the beneficial effects that：
Due to a kind of microstrip slot antenna of the utility model, including substrate, the side of substrate is provided with ground floor, substrate
The other side is provided with microstrip feed line and radiator, L-shaped gap is provided on ground floor, long side top in L-shaped gap has and ground
Layer the second ground floor connected vertically, the second ground floor have rectangular aperture, long side and ground floor and the second ground of rectangular aperture
The intersection of face layer partially overlaps, and rectangular aperture long side is parallel with L-shaped gap long side, and the corresponding substrate other side in L-shaped gap is equipped with
Radiator, radiator include the first metal patch, the second metal patch above the first metal patch and be located at the first gold medal
Belong to the third metal patch below patch, it is another in substrate that the first metal patch and the second metal patch are located at L-shaped gap long side
The end of lower part in the corresponding position region of side, one end of the first metal patch and microstrip feed line connects, the first metal patch it is another
One end is connect with the end of the end of the second metal patch and third metal patch, and third metal patch lower part is located at L-shaped gap
Short side is in substrate other side corresponding position region.By loading L-shaped gap, slot edge length is set to increase, and then keep gap all
The current path enclosed extends, and forms loop current, to generate electromagnetic field around gap；Radiator is pasted including the first metal
Piece, the second metal patch and third metal patch, various sizes of patch encourages the resonance on different frequency, and keeps resonance mutual
Coupling, achievees the purpose that effectively to encourage low-frequency resonant, increases the impedance bandwidth of antenna；By the way that the second ground floor is arranged, increase
The area of ground floor.The antenna effective bandwidth covers the low-frequency range of 0.7GHz to 1.2GHz and the high frequency of 2.2GHz to 3GHz
Section, it is undesirable to solve the problems, such as that ultra wide band antenna for mobile phone covers LTE700 frequency bands.
Due to being provided with patch capacitor in the short side of L-shaped gap, the direction of patch capacitor is parallel with L-shaped gap long side direction,
So as to improve the matching of feeder line and gap.
In conclusion a kind of microstrip slot antenna of the utility model solve in the prior art antenna for mobile phone meet it is small-sized
Low-frequency range LTE700 cannot be effectively covered while change.A kind of microstrip slot antenna of the utility model, antenna size is small, effectively covers
Low-frequency range LTE700 is covered.
Description of the drawings
Fig. 1 is the structural schematic diagram of substrate side where a kind of ground floor of microstrip slot antenna of the utility model；
Fig. 2 is the structural schematic diagram of substrate side where a kind of radiator of microstrip slot antenna of the utility model；
In figure：1- substrates, 2- ground floors, 3- microstrip feed lines, 4- radiators, the first metal patches of 41-, the second metals of 42-
Patch, 43- third metal patches, 5-L shapes gap, the second ground floors of 6-, 7- rectangular apertures, 8- patch capacitors, 9- vertical substrates.
Specific implementation mode
With reference to the accompanying drawings and examples, the utility model is expanded on further.
Recorded lower section refers to the direction of the short side direction in L-shaped gap in the present invention, and top refers to L-shaped profiling
Short side in the opposite direction.
As Fig. 1 and Fig. 2 jointly shown in, a kind of microstrip slot antenna, including substrate 1, the side of substrate 1 are provided with ground floor
2, the other side of substrate 1 is provided with microstrip feed line 3 and radiator 4, and L-shaped gap 5,5 long side of L-shaped gap are provided on ground floor 2
Top has and has rectangular aperture 7, the length of rectangular aperture 7 with 2 second ground floor 6 connected vertically of ground floor, the second ground floor 6
Side and the intersection of ground floor 2 and the second ground floor 6 partially overlap, and 7 long side of rectangular aperture is parallel with 7 long side of L-shaped gap, L-shaped seam
7 corresponding substrate of gap, 1 other side is equipped with radiator 4, and radiator 4 includes the first metal patch 41, is located at the first metal patch 41
Second metal patch 42 of top and the third metal patch 43 below the first metal patch 41,41 He of the first metal patch
Second metal patch 42 is located at 5 long side of L-shaped gap lower part, first metal patch 41 in 1 other side corresponding position region of substrate
One end connect with the end of microstrip feed line 3, the end and of the other end of the first metal patch 41 and the second metal patch 42
The end of three metal patches 43 connects, and 43 lower part of third metal patch is located at 5 short side of L-shaped gap and corresponds to position in 1 other side of substrate
Set region.
As shown in Fig. 2, being provided with patch capacitor 8, the direction of patch capacitor 8 in 5 short side of L-shaped gap in the present embodiment
It is parallel with 5 long side direction of L-shaped gap.
As shown in Fig. 2, the first metal patch 41, the second metal patch 42 and third metal patch 43 in the present embodiment
It is rectangular patch.One end of first metal patch 41 respectively with the end of the second metal patch 42 and third metal patch 43
End vertical connects.Microstrip feed line 3 is perpendicular to the first metal patch.
As shown in Figure 1, the second ground floor 6 is arranged on vertical substrate 9 in the present embodiment, vertical substrate vertical 9 is directly set
It sets on substrate 1, the second ground floor 6 is fixed on stabilized structure on vertical substrate 9, is unlikely to deform.
As Fig. 1 and Fig. 2 jointly shown in, a kind of operation principle of microstrip slot antenna of the utility model is as follows：
By the way that L-shaped gap 5 is arranged, so that slot edge length is increased, and then the current path around gap is made to extend, formed
Loop current, to generate electromagnetic field around gap；Radiator 4 includes the first metal patch 41,42 and of the second metal patch
Third metal patch 43, various sizes of patch encourages the resonance on different frequency, and resonance is made to be mutually coupled, and reaches and effectively swashs
The purpose for encouraging low-frequency resonant increases the impedance bandwidth of antenna；By the way that the second ground floor 6 is arranged, the face of ground floor 2 is increased
Product, the antenna effective bandwidth cover the low-frequency range of 0.7GHz to 1.2GHz and the high band of 2.2GHz to 3GHz, solve super
Broad band mobile phone antenna covers LTE700 frequency bands undesirable problem.A kind of microstrip slot antenna of the utility model, antenna size
It is small, effectively cover low-frequency range LTE700.
The utility model is not limited to above-mentioned specific embodiment, and those skilled in the art visualize from above-mentioned
Hair, without performing creative labour, the various transformation made are all fallen within the scope of protection of the utility model.
Claims (6)
1. the side of a kind of microstrip slot antenna, including substrate, the substrate is provided with ground floor, the other side of the substrate is set
It is equipped with microstrip feed line and radiator, which is characterized in that L-shaped gap, L-shaped gap long side top are provided on the ground floor
With with ground floor the second ground floor connected vertically, second ground floor have rectangular aperture, the length of the rectangular aperture
Side and the intersection of ground floor and the second ground floor partially overlap, and the rectangular aperture long side is parallel with L-shaped gap long side, institute
It states the corresponding substrate other side in L-shaped gap and is equipped with the radiator, the radiator includes the first metal patch, is located at institute
The second metal patch above the first metal patch and the third metal patch below first metal patch are stated, it is described
Under first metal patch and the second metal patch are located at L-shaped gap long side in the substrate other side corresponding position region
The one end in portion, first metal patch is connect with the end of the microstrip feed line, the other end of first metal patch with
The end of second metal patch is connected with the end of third metal patch, and third metal patch lower part is located at the L
Shape gap short side is in the substrate other side corresponding position region.
2. a kind of microstrip slot antenna according to claim 1, which is characterized in that be provided in the short side of the L-shaped gap
Patch capacitor, the direction of the patch capacitor are parallel with L-shaped gap long side direction.
3. a kind of microstrip slot antenna according to claim 1 or 2, which is characterized in that first metal patch, second
Metal patch and third metal patch are rectangular patch.
4. a kind of microstrip slot antenna according to claim 2, which is characterized in that the microstrip feed line is perpendicular to described
One metal patch.
5. a kind of microstrip slot antenna according to claim 2, which is characterized in that one end of first metal patch point
It is not connect with the end vertical of the end of second metal patch and third metal patch.
6. a kind of microstrip slot antenna according to claim 1 or 2, which is characterized in that the second ground floor setting exists
On vertical substrate, the vertical substrate is vertically arranged on the substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721844881.0U CN207781886U (en) | 2017-12-26 | 2017-12-26 | A kind of microstrip slot antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721844881.0U CN207781886U (en) | 2017-12-26 | 2017-12-26 | A kind of microstrip slot antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207781886U true CN207781886U (en) | 2018-08-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721844881.0U Active CN207781886U (en) | 2017-12-26 | 2017-12-26 | A kind of microstrip slot antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207781886U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113097698A (en) * | 2020-01-08 | 2021-07-09 | 华为技术有限公司 | Antenna assembly and mobile terminal |
-
2017
- 2017-12-26 CN CN201721844881.0U patent/CN207781886U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113097698A (en) * | 2020-01-08 | 2021-07-09 | 华为技术有限公司 | Antenna assembly and mobile terminal |
| CN113097698B (en) * | 2020-01-08 | 2022-07-19 | 华为技术有限公司 | Antenna assembly and mobile terminal |
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