CN212380577U - Multi-frequency antenna - Google Patents
Multi-frequency antenna Download PDFInfo
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- CN212380577U CN212380577U CN202020626010.7U CN202020626010U CN212380577U CN 212380577 U CN212380577 U CN 212380577U CN 202020626010 U CN202020626010 U CN 202020626010U CN 212380577 U CN212380577 U CN 212380577U
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Abstract
The utility model discloses a multifrequency antenna, include: a grounding part; the feed-in part is provided with a first side edge, a second side edge, a first end edge and a second end edge, wherein the first side edge and the second side edge are opposite to each other; a feed-in point arranged at the first end edge; a lower grounding part formed by extending the second side edge and connected between the feed-in part and the grounding part; a first radiating part formed by extending the second side edge; the second radiation part is formed by extending the first side edge of the feed-in part; the third radiation part is formed by extending the grounding part, and the third radiation part and the second radiation part are both arranged on the same side of the feed-in part; and a fourth radiation portion, extend by ground connection portion and form, fourth radiation portion, lower ground portion and first radiation portion all set up in feed-in portion opposite side, consequently, the utility model discloses the multifrequency antenna increases the frequency channel under the condition of finite volume.
Description
Technical Field
The present invention relates to an antenna, and more particularly, to a multiband antenna with an increased frequency band under a limited size.
Background
With the rapid development of the high-technology communication industry, mobile communication products are becoming more and more widespread, and especially 5G communication is becoming more and more popular, because of the development of the 5G technology, the 5G NR frequency band, the 5G millimeter wave frequency band, and the FR1 frequency band are also utilized, and part of the frequency bands coincide with the original 4G frequency band, therefore, the demand for the antenna use frequency band of mobile communication products such as mobile phones is becoming higher and higher.
However, due to the market trend, the antennas in the mobile communication device are all accommodated in the device, so the antennas are limited by space, and the small-sized Planar Inverted F Antenna (PIFA) is adopted as the antenna of the mobile communication device, so that certain limiting conditions exist for improving the application bandwidth and the antenna area, and the requirement of multiple frequency bands cannot be met.
Therefore, there is a need for a multi-frequency antenna that increases the frequency band with a limited size.
Disclosure of Invention
The utility model aims at providing a multifrequency antenna to the defect that prior art exists with not enough.
In order to achieve the above object, the utility model discloses a multifrequency antenna, include: a grounding part; the feed-in part is in a rectangular sheet shape, the feed-in part is provided with a first side edge and a second side edge which are opposite, and a first end edge and a second end edge which are opposite, and the first end edge is close to the grounding part and keeps a distance with the grounding part; a feed-in point arranged at the first end edge; a lower grounding part formed by extending the second side edge and connected between the feed-in part and the grounding part; the first radiation part is formed by extending the second side edge, the first radiation part and the lower ground part are arranged on the same side of the feed-in part, and the lower ground part is arranged between the grounding part and the first radiation part; the second radiation part is formed by extending the first side edge of the feed-in part; the third radiation part is formed by extending the grounding part, is arranged among the grounding part, the feed-in part and the second radiation part, and is arranged on the same side of the feed-in part; the fourth radiation part is formed by extending the grounding part, the fourth radiation part, the lower ground part and the first radiation part are all arranged on the other side of the feed-in part, and the fourth radiation part is arranged among the grounding part, the feed-in part and the lower ground part; the first radiation portion extension length is greater than the second radiation portion extension length, the first radiation portion extension length is greater than the lower ground portion extension length, the second radiation portion extension length is greater than the third radiation portion extension length, and the third radiation portion extension length is greater than the fourth radiation portion extension length.
As a further improvement, the lower portion is perpendicular to the feeding portion, a coupling portion extending rightward is disposed at the right end of the lower portion, a connecting portion connected to the grounding portion downward is disposed at the middle end of the lower portion, the connecting portion is perpendicular to the middle end of the lower portion and parallel to the feeding portion, and the coupling portion is perpendicular to the connecting portion.
As a further improvement, the first radiation portion includes a first extension portion extending to the second side edge of the feed-in portion, one end of the first extension portion extends to form an adjustment portion, one end of the adjustment portion extends to form a bending arm with an opening facing the adjustment portion, one end of the bending arm bends to form a bending arm facing the lower ground portion, and one end of the bending arm bends to extend a second extension portion away from the adjustment portion.
As a further improvement, the outer edge of the adjusting part extends towards the inner edge to form a gap.
As a further improvement, the front end of the fourth radiation portion is flush with the gap side.
As a further improvement, the width of the first extending portion is greater than the width of the bending arm and the width of the second extending portion, the second extending portion and the first extending portion are parallel to each other, the inner edge of the second extending portion is aligned with the inner edge of the adjusting portion, the extending length of the second extending portion does not exceed the extending length of the bending arm, the width of the inner arm of the bending arm is the same as the width of the second extending portion, and the width of the outer arm of the bending arm is wider than the width of the inner arm of the bending arm.
As a further improvement, the third radiation portion includes a first vertical portion, a first horizontal portion, a second vertical portion and a second horizontal portion, the first vertical portion extends from the grounding portion and extends toward the second radiation portion, the first vertical portion is adjacent to the feed-in portion, the first vertical portion is parallel to the feed-in portion, one end of the first vertical portion extends to form the first horizontal portion, the first horizontal portion extends away from the feed-in portion, the first horizontal portion is perpendicular to the first vertical portion, one end of the first horizontal portion extends to form the second vertical portion, the second vertical portion extends toward the second radiation portion, the second vertical portion is parallel to the first vertical portion, one end of the second vertical portion extends to form the second horizontal portion, the second horizontal portion extends away from the feed-in portion, and the second horizontal portion is parallel to the first horizontal portion, the first vertical portion, the first transverse portion, the second vertical portion and the second transverse portion are arranged in a ladder shape, the width of the second vertical portion is larger than that of the first vertical portion, and the width of the first transverse portion is larger than that of the second transverse portion.
As a further improvement, the feeding point, the feeding portion, the grounding portion, the first radiation portion, the second radiation portion, the third radiation portion, and the fourth radiation portion are on the same side of the grounding portion.
As a further improvement, the second radiation part is a strip shape arranged transversely, a protruding part is arranged at the joint of the second radiation part and the feed-in part, and the protruding part is arranged among the second radiation part, the feed-in part and the third radiation part.
As described above, the multi-band antenna of the present invention feeds an electrical signal through a feed point, the first radiation portion band is 824-960MHZ and resonates at 1710-2170MHZ by adjusting the width of the first extension portion and the width of the gap, the second radiation portion band is 2300-2600MHZ, the third radiation portion band is 3300-3800MHZ, and the fourth radiation portion band is 4400-5000 MHZ. Therefore, the utility model discloses multifrequency antenna can increase the frequency channel under the condition of finite volume, adapts to the miniaturized development trend of electronic product.
Drawings
Fig. 1 is a schematic view of the planar structure of the multi-band antenna of the present invention.
Fig. 2 is a Voltage Standing Wave Ratio (VSWR) test chart of the multi-band antenna according to the present invention.
Fig. 3 is a Smith Chart (Smith Chart) of the multi-band antenna of the present invention.
The reference numerals in the drawings are explained below.
Feed-in part 10 and lower ground part 11
Connecting part 111 and coupling part 112
Adjusting part 122 bending arm 123
First vertical part 31 first transverse part 32
Second vertical portion 33 and second lateral portion 34
Grounding part 50 of fourth radiation part 40
A circuit board 60.
Detailed Description
In order to explain the technical content, structural features, achieved objects and functions of the multi-band antenna 100 of the present invention in detail, the following embodiments are illustrated in detail with reference to the drawings.
Referring to fig. 1, the multi-band antenna 100 of the present invention is a flat inverted F antenna disposed on a circuit board 60, and the multi-band antenna 100 includes a feeding point 1, a feeding portion 10, a lower portion 11, a first radiation portion 12, a second radiation portion 20, a third radiation portion 30, a fourth radiation portion 40, and a ground portion 50, wherein the feeding point 1 is disposed on one side of the feeding portion 10, and the feeding point 1 transmits current through a lower end of the feeding portion 10. In this embodiment, the feeding portion 10 and the grounding portion 50 are perpendicular to each other, and the feeding point 1, the feeding portion 10, the grounding portion 11, the first radiation portion 12, the second radiation portion 20, the third radiation portion 30 and the fourth radiation portion 40 are on the same side of the grounding portion 50.
The feeding part 10 is in a rectangular sheet shape, the feeding part 10 is provided with a first side edge 101, a second side edge 102 opposite to the first side edge 101, and a first end edge 103 and a second end edge 104 opposite to the first side edge, the first end edge 103 is close to the grounding part 50 and keeps a distance from the grounding part 50, the feeding point 1 is arranged at the first end edge 103, the lower part of the second side edge 102 transversely extends to form the lower ground part 11, the lower ground part 11 is perpendicular to the feeding part 10, so that the lower ground part 11 and the grounding part 50 keep parallel to each other, the upper part of the second side edge 102 transversely extends to form the first radiation part 12, and the lower ground part 11 and the first radiation part 12 are on the same side of the feeding part 10. The lower ground portion 11 and the first radiation portion 12 are kept parallel to each other. The lower ground portion 11 is disposed between the first radiation portion 12 and the ground portion 50.
A connecting portion 111 connected to the grounding portion 50 downward is disposed at a middle end of the lower ground portion 11, a left end of the lower ground portion 11 is connected to the feeding portion 10, the connecting portion 111 is in a planar strip shape, the connecting portion 111 is perpendicular to the lower ground portion 11 and the grounding portion 50, a coupling portion 112 extending rightward is disposed at a right end of the lower ground portion 11, the coupling portion 112 is perpendicular to the connecting portion 111, the first radiation portion 12 includes a first extending portion 121 extending rightward along the feeding portion 10, one end of the first extending portion 121 extends downward and then extends obliquely upward to form an adjusting portion 122, the adjusting portion 122 is substantially U-shaped, one end of the adjusting portion 122 extends rightward and bends to form a bent arm 123, in this embodiment, the second end edge 104 is flush with an outer side edge of the bent arm 123, and the bent arm 123 is substantially in a reverse ㄈ shape, one end of the bending arm 123 bends downward to form a bending arm 124, the bending arm 124 bends rightward to extend a second elongated extension portion 125, the outer edge of the adjusting portion 122 extends toward the inner edge to form a gap 126, and the left end of the first radiation portion 12 is connected to the feeding portion 10.
In this embodiment, the first extending portion 121 of the first radiating portion 12 has the widest width, the first extending portion 121 and the second extending portion 125 are parallel to each other, the second extending portion 125 and the lower ground portion 11 are parallel to each other, the inner edge of the second extending portion 125 is aligned with the inner edge of the adjusting portion 122, the length of the lower ground portion 11 extending rightward does not exceed the length of the second extending portion 125 extending rightward, the length of the second extending portion 125 extending rightward does not exceed the length of the bending arm 123 extending rightward, the second extending portion 125 is parallel to the coupling portion 112, the width of the inner arm of the bending arm 123 is substantially the same as the width of the second extending portion 125, and the width of the outer arm of the bending arm 123 is wider than the width of the inner arm of the bending arm 123.
When the multi-band antenna 100 of the present invention is used for wireless communication, the current is fed from the feeding point 1, the frequency band of the current passing through the feeding portion 10 and the first radiating portion 12 can oscillate out is 824-960MHZ, in this embodiment, the frequency band of the current passing through the adjustment of the width of the first extending portion 121 and the width of the gap 126 can oscillate out is 1710MHZ-2170MHZ, and the frequency band can be increased by adjusting the distance between the lower portion 11 and the first radiating portion 12, which is not limited to this specific implementation.
The second radiation portion 20 is formed by extending the upper portion of the feeding portion 10 transversely, the second radiation portion 20 extends to the upper portion of the first side edge 101 of the feeding portion 10, the second radiation portion 20 is in a transversely arranged strip shape, the right end of the second radiation portion 20 is connected to the feeding portion 10, a protruding portion 21 is arranged at the connection portion of the second radiation portion 20 and the feeding portion 10, in this embodiment, the width of the second radiation portion 20 is greater than that of the third radiation portion 30, the protruding portion 21 is arranged at the inner side edge of the second radiation portion 20, and the outer side edge of the second radiation portion 20 is aligned with the second end edge 104 of the feeding portion 10 and aligned with the outer side edge of the first radiation portion 12.
When the multi-band antenna 100 of the present invention is used for wireless communication, the current is fed through the feed point 1, and the frequency band of the current passing through the feed portion 10 and the second radiation portion 20 that can oscillate out is 2300MHZ-2690 MHZ. The bandwidth of the 2300MHz-2690MHz band can be adjusted by changing the length of the lower part 11. Furthermore, the coupling portion 112 can couple with the second extension portion 125 to adjust the bandwidth of the 2300MHZ-2690MHZ band.
The third radiation part 30 is formed by the grounding strip 50 extending longitudinally and then bending repeatedly, and is disposed between the first side edge 101 of the feeding part 10, the grounding part 50 and the inner side edge of the second radiation part 20, the third radiation portion 30 includes a first vertical portion 31, a first horizontal portion 32, a second vertical portion 33 and a second horizontal portion 34, the first vertical portion 31 is connected to the ground strip 50 and extends toward the second radiation portion 20, one end of the first vertical portion 31 extends outwards and transversely to form the first transverse portion 32, one end of the first transverse portion 32 extends towards the second radiation portion 20 to form the second vertical portion 33, one end of the second vertical portion 33 extends outwards and transversely to form the second transverse portion 34, and the first vertical portion 31, the first transverse portion 32, the second vertical portion 33 and the second transverse portion 34 are arranged in a step shape. In the present embodiment, the first vertical portion 31 is perpendicular to the grounding portion 50 and parallel to the feeding portion 10, the first horizontal portion 32 is perpendicular to the first vertical portion 31, the second vertical portion 33 is perpendicular to the first horizontal portion 32 and parallel to the first vertical portion 31, and the second horizontal portion 34 is perpendicular to the second vertical portion 33 and parallel to the first horizontal portion 32.
In this embodiment, the first horizontal portion 32, the second horizontal portion 34 and the second radiation portion 20 are parallel to each other, the first vertical portion 31 and the second vertical portion 33 are parallel to each other, the width of the second vertical portion 33 is greater than that of the first vertical portion 31, the width of the first horizontal portion 32 is greater than that of the second horizontal portion 34, and the length of the second horizontal portion 34 extending leftward does not exceed the length of the second radiation portion 20 extending leftward.
The utility model discloses when multifrequency antenna 100 is used for wireless communication, third radiation portion 30 with thereby the frequency channel that feed point 1 produced the coupling and oscillated out is 3300MHZ-3800MHZ, and when concrete implementation, the permeable adjustment second radiation portion 20 with interval between the second horizontal portion 34 changes the frequency width of third radiation portion 30.
The fourth radiation portion 40 is formed by extending the grounding plate 50 longitudinally and then extending transversely, and is disposed on the other side of the feeding portion 10, in this embodiment, the fourth radiation portion 40 is disposed between the grounding portion 50, the lower grounding portion 11, the feeding portion 10 and the connecting portion 111, the fourth radiation portion 40 is connected to the grounding portion 50, the fourth radiation portion 40 extends toward the lower grounding portion 11, bends and then extends toward the connecting portion 111, and the front end of the fourth radiation portion 40 is flush with one side of the gap 126.
The utility model discloses when multifrequency antenna 100 is used for wireless communication, fourth radiation portion 40 with thereby the frequency channel that feed-in point 1 produced the coupling and oscillated is 4400MHZ-5000MHZ, and when concrete implementation, the permeable adjustment fourth radiation portion 40 with interval between the lower ground portion 11 reaches feed-in portion 10 with interval between the third radiation portion 30 makes third radiation portion 30 with the resonant frequency that fourth radiation portion 40 coupling goes out becomes bigger. In specific implementation, the bandwidth of the 4400MHZ-5000MHZ band can be changed by adjusting the distance between the second transverse portion 34 and the second radiating portion 20.
In this embodiment, the frequency band of the first radiation portion 12 is 824-960MHZ, and the resonance is within the range of 1710MHZ-2170MHZ by adjusting the width of the first extension portion 121 and the width of the gap 126, the frequency band of the second radiation portion 20 is 2300MHZ-2600MHZ, the frequency band of the third radiation portion 30 is 3300MHZ-3800MHZ, and the frequency band of the fourth radiation portion 40 is 4400MHZ-5000 MHZ. Make the utility model discloses multifrequency antenna 100 increases the frequency channel under limited volume.
In this embodiment, the extension length of the first radiation portion 12 is greater than that of the second radiation portion 20, the extension length of the first radiation portion 12 is greater than that of the lower ground portion 11, the extension length of the second radiation portion 20 is greater than that of the third radiation portion 30, and the extension length of the third radiation portion 30 is greater than that of the fourth radiation portion 40.
Fig. 2 is a Voltage Standing Wave Ratio (VSWR) test chart of the multi-band antenna 100 according to the present invention. When the multi-frequency antenna 100 of the present invention operates at 824MHZ, the voltage standing wave ratio is 7.3616 (M1 in the figure), when the multi-frequency antenna 100 of the present invention operates at 960MHZ, the voltage standing wave ratio is 7.6636 (M2 in the figure), when the multi-frequency antenna 100 of the present invention operates at 1710MHZ, the voltage standing wave ratio is 6.4847 (M3 in the figure), when the multi-frequency antenna 100 of the present invention operates at 2170MHZ, the voltage standing wave ratio is 1.3327 (M4 in the figure), when the multi-frequency antenna 100 of the present invention operates at 2300MHZ, the voltage standing wave ratio is 2.8115 (M5 in the figure), when the multi-frequency antenna 100 of the present invention operates at 2690MHZ, the voltage standing wave ratio is 2.6846 (M6 in the figure), when the multi-frequency antenna 100 of the present invention operates at 3300MHZ, the voltage standing wave ratio is 2.6905 (M7 in the figure), when the multi-frequency antenna 100 of the present invention operates at 3800MHZ, the voltage standing wave ratio is 2.1313 (M8 in the figure), the voltage standing wave ratio is 1.9925 (M9 in the figure), and when the multi-band antenna 100 of the present invention operates at 5000MHZ, the voltage standing wave ratio is 1.7869 (M10 in the figure). Therefore, the multi-frequency antenna 100 of the present invention can be stably operated in frequency band ranges of 824-.
In view of the above, the multi-band antenna 100 of the present invention feeds an electrical signal through the feeding point 1, the frequency band of the first radiation portion 12 is 824-960MHZ, and the resonance between the width of the first extension portion 121 and the width of the gap 126 is 1710MHZ-2170MHZ through adjustment, the frequency band of the second radiation portion 20 is 2300MHZ-2600MHZ, the frequency band of the third radiation portion 30 is 3300MHZ-3800MHZ, and the frequency band of the fourth radiation portion 40 is 4400MHZ-5000 MHZ. Therefore, the utility model discloses multifrequency antenna 100 can increase the frequency channel under the condition of finite volume, adapts to the miniaturized development trend of electronic product.
Claims (9)
1. A multi-frequency antenna, comprising: the method comprises the following steps: a grounding part; the feed-in part is in a rectangular sheet shape, the feed-in part is provided with a first side edge and a second side edge which are opposite, and a first end edge and a second end edge which are opposite, and the first end edge is close to the grounding part and keeps a distance with the grounding part; a feed-in point arranged at the first end edge; a lower grounding part formed by extending the second side edge and connected between the feed-in part and the grounding part; the first radiation part is formed by extending the second side edge, the first radiation part and the lower ground part are arranged on the same side of the feed-in part, and the lower ground part is arranged between the grounding part and the first radiation part; the second radiation part is formed by extending the first side edge of the feed-in part; the third radiation part is formed by extending the grounding part, is arranged among the grounding part, the feed-in part and the second radiation part, and is arranged on the same side of the feed-in part; the fourth radiation part is formed by extending the grounding part, the fourth radiation part, the lower ground part and the first radiation part are all arranged on the other side of the feed-in part, and the fourth radiation part is arranged among the grounding part, the feed-in part and the lower ground part; the first radiation portion extension length is greater than the second radiation portion extension length, the first radiation portion extension length is greater than the lower ground portion extension length, the second radiation portion extension length is greater than the third radiation portion extension length, and the third radiation portion extension length is greater than the fourth radiation portion extension length.
2. The multi-frequency antenna of claim 1, wherein: the lower ground part is perpendicular to the feed-in part, a coupling part extending towards the right is arranged at the right end of the lower ground part, a connecting part connected with the grounding part downwards is arranged at the middle end of the lower ground part, the connecting part is perpendicular to the middle end of the lower ground part and parallel to the feed-in part, and the coupling part is perpendicular to the connecting part.
3. The multi-frequency antenna of claim 1, wherein: the first radiation part comprises a first extension part extending to the second side edge of the feed-in part, one end of the first extension part extends to form an adjusting part, one end of the adjusting part extends to form an opening facing a bending arm of the adjusting part, one end of the bending arm bends to form a bending arm facing the lower part, and one end of the bending arm bends to extend out of a second extension part away from the adjusting part.
4. The multi-frequency antenna of claim 3, wherein: the outer edge of the adjusting part extends towards the inner edge to form a gap.
5. The multi-frequency antenna of claim 4, wherein: the front end of the fourth radiation part is flush with one side of the gap.
6. The multi-frequency antenna of claim 3, wherein: the width of the first extending part is larger than the width of the bending arm and the width of the second extending part, the second extending part and the first extending part are parallel to each other, the inner edge of the second extending part is flush with the inner edge of the adjusting part, the extending length of the second extending part does not exceed the extending length of the bending arm, the width of the inner arm of the bending arm is the same as the width of the second extending part, and the width of the outer arm of the bending arm is wider than that of the inner arm of the bending arm.
7. The multi-frequency antenna of claim 1, wherein: the third radiation part comprises a first vertical part, a first transverse part, a second vertical part and a second transverse part, the first vertical part extends from the grounding part and extends towards the second radiation part, the first vertical part is adjacent to the feed-in part, the first vertical part is parallel to the feed-in part, one end of the first vertical part extends to form the first transverse part, the first transverse part extends to be far away from the feed-in part, the first transverse part is perpendicular to the first vertical part, one end of the first transverse part extends to form the second vertical part, the second vertical part extends towards the second radiation part, the second vertical part is parallel to the first vertical part, one end of the second vertical part extends to form the second transverse part, the second transverse part extends to be far away from the feed-in part, and the second transverse part is parallel to the first transverse part, the first vertical portion, the first transverse portion, the second vertical portion and the second transverse portion are arranged in a ladder shape, the width of the second vertical portion is larger than that of the first vertical portion, and the width of the first transverse portion is larger than that of the second transverse portion.
8. The multi-frequency antenna of claim 1, wherein: the feed-in point, the feed-in part, the lower ground part, the first radiation part, the second radiation part, the third radiation part and the fourth radiation part are arranged on the same side of the ground part.
9. The multi-frequency antenna of claim 1, wherein: the second radiation part is in a strip shape and is transversely arranged, a protruding part is arranged at the joint of the second radiation part and the feed-in part, and the protruding part is arranged among the second radiation part, the feed-in part and the third radiation part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020626010.7U CN212380577U (en) | 2020-04-23 | 2020-04-23 | Multi-frequency antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020626010.7U CN212380577U (en) | 2020-04-23 | 2020-04-23 | Multi-frequency antenna |
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| Publication Number | Publication Date |
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| CN212380577U true CN212380577U (en) | 2021-01-19 |
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| CN202020626010.7U Active CN212380577U (en) | 2020-04-23 | 2020-04-23 | Multi-frequency antenna |
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| CN (1) | CN212380577U (en) |
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- 2020-04-23 CN CN202020626010.7U patent/CN212380577U/en active Active
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