CN216354802U - Antenna structure - Google Patents
Antenna structure Download PDFInfo
- Publication number
- CN216354802U CN216354802U CN202121607149.8U CN202121607149U CN216354802U CN 216354802 U CN216354802 U CN 216354802U CN 202121607149 U CN202121607149 U CN 202121607149U CN 216354802 U CN216354802 U CN 216354802U
- Authority
- CN
- China
- Prior art keywords
- radiator
- boss
- antenna
- grounding
- extension
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Waveguide Aerials (AREA)
Abstract
The utility model discloses an antenna structure, comprising: the upper part of the front surface of the grounding plate is provided with a boss which is formed by protruding forwards; the first antenna part comprises a first radiator and a second radiator, the first radiator is arranged on the boss, the first radiator extends from the front surface of the boss to the lower surface of the boss to form a feed-in part, and the second radiator is arranged at the bottom of the front surface of the boss; the second antenna part is formed by extending the first radiating body to the right side and is connected with the second radiating body; the third antenna part is arranged at the bottom of the front surface of the boss and is positioned among the first radiator, the second radiator and the second antenna part, and a gap is formed between the third antenna part and the second antenna part and has the effect of increasing the bandwidth; the fourth antenna part comprises a third radiator and a fourth radiator, the third radiator is arranged on the left side of the feed-in part of the first radiator, and the fourth radiator is formed by extending the feed-in part to the left.
Description
Technical Field
The present invention relates to an antenna structure, and more particularly, to an antenna structure with multiple bands.
Background
In response to the development of the 5G communication in the future, the frequency bands of n77, n78 and n79 are added under the existing 4G frequency band in the Sub-6G frequency band to meet the requirement of multi-frequency in the current mobile communication. It is a challenge to design a multiband antenna in a limited space.
Generally, the antenna applied to the hidden mobile communication device in the market is a pifa (planar Inverted F antenna), Monopole or Loop, and has certain limitation conditions for increasing the application bandwidth and the area size, so that the antenna cannot meet the requirements of multi-band and miniaturization.
Therefore, there is a need for an antenna structure that can have multi-band functionality in a limited space.
Disclosure of Invention
The utility model aims to provide an antenna structure, and particularly relates to an antenna structure with multiple frequency bands.
In order to achieve the purpose, the utility model discloses an antenna structure, which comprises a grounding plate, wherein the upper part of the front surface of the grounding plate is provided with a boss which is formed by protruding forwards, and the lower surface of the boss is connected with a grounding area; the first antenna part comprises a first radiator and a second radiator, the first radiator is arranged on the boss, the first radiator extends from the front surface of the boss to the lower surface of the boss to form a feed-in part, the feed-in part is not connected with the grounding area, the second radiator is arranged on the right side of the first radiator, the second radiator is arranged at the bottom of the front surface of the boss, the second radiator is connected with the grounding area, and the upper surface of the boss is also provided with a groove formed by depression; the second antenna part is formed by extending the first radiating body to the right side and is connected with the second radiating body; a third antenna part, disposed at the bottom of the front surface of the boss and located between the first radiator, the second radiator and the second antenna part, wherein a gap is formed between the third antenna part and the second antenna part, the gap has the effect of increasing the bandwidth, and the third antenna part is connected to the grounding area; and the fourth antenna part comprises a third radiator and a fourth radiator, the third radiator is arranged at the left side of the feed-in part of the first radiator, the third radiator is connected with the grounding area, and the fourth radiator is formed by extending the feed-in part to the left.
As a further improvement, the first radiator has a first extension portion extending from the bottom to the top of the front surface of the boss, the first extension portion extends from the front surface of the boss to the lower surface of the boss to form the feed-in portion, the feed-in portion is not connected to the ground region, the top of the first extension portion extends rightward to form a second extension portion, the second extension portion extends rightward to the rightmost end of the boss to form a third extension portion, the third extension portion extends upward from the front surface of the boss to the upper surface of the boss to form a fourth extension portion, and the fourth extension portion extends leftward from the rightmost end of the boss to the leftmost end of the boss to form a fifth extension portion.
As a further improvement, the groove is formed by recessing below the fourth extension portion of the first radiator on the upper surface of the boss, and the groove and the third extension portion have a frequency doubling effect.
As a further improvement, the left end of the second radiator has a sixth extending portion formed by extending upward, the right end of the second radiator extends downward to the lower surface of the boss to form a first grounding portion, and the first grounding portion is connected with the grounding portion.
As a further improvement, the second antenna portion further extends to the right to form a seventh extending portion.
As a further improvement, the left end of the third antenna part extends downwards to the lower surface of the boss to form a second grounding part, and the second grounding part is connected with the grounding area.
As a further improvement, the third radiator has an eighth extension portion formed to extend upward.
As a further improvement, the third radiator extends downward to the lower surface of the boss to form a third grounding portion, and the third grounding portion is connected with the grounding region.
As a further improvement, the fourth radiator has a ninth extension extending leftwards.
As described above, the antenna structure of the present invention utilizes the parasitic and coupling modes to generate the remaining resonant frequencies, such a mode can utilize the mutual addition and superposition of the harmonic waves of the original main frequency and the coupled frequencies to enlarge the bandwidth range, so that the application frequency band of the antenna structure of the present invention can be wider, and the area can be utilized more effectively without occupying too much space.
Drawings
Fig. 1 is a perspective view of the antenna structure of the present invention.
Fig. 2 is a perspective view of another angle of the antenna structure of the present invention.
Fig. 3 is a graph of the operating frequency of the resonance of the antenna structure of the present invention.
FIG. 4 is a Smith chart of the antenna structure of the present invention.
Fig. 5 is an equivalent omni-directional radiation power diagram of the antenna structure of the present invention.
Fig. 6 is a radiation power diagram of the antenna structure of the present invention.
Fig. 7 is a graph of the radiation efficiency of the antenna structure of the present invention.
Detailed Description
For the purpose of illustrating the technical content, constructional features, objects and effects achieved by the present invention in detail, reference is made to the following detailed description taken in conjunction with the accompanying drawings.
Referring to fig. 1 and 2, an Antenna structure 100, which is a Planar Inverted F Antenna (PIFA), is disclosed. The antenna structure 100 includes a ground plane 1.
The upper portion of the front surface of the ground plate 1 has a boss 11 formed to protrude forward. The boss 11 includes a first antenna portion 2, a second antenna portion 3, a third antenna portion 4, and a fourth antenna portion 5. The lower surface of the boss 11 is connected with a ground region 12.
The first antenna portion 2 includes a first radiator 21 and a second radiator 22. The first radiator 21. The first radiator 21 is disposed on the boss 11. The first radiator 21 has a first extension 211 extending from the bottom to the top of the front surface of the boss 11.
The first extension portion 211 extends from the front surface of the boss 11 to the lower surface of the boss 11 to form a feeding portion 212, the feeding portion 212 is not connected to the ground region 12, and a signal can enter the antenna structure 100 from the feeding portion 212. The top of the first extension portion 211 extends rightward to form a second extension portion 213. The second extension 213 extends rightwards to the rightmost end of the boss 11 to form a third extension 214. The second extension 213 is wider than the third extension 214. The third extension 214 extends upward from the front surface of the boss 11 to the upper surface of the boss 11 to form a fourth extension 215. The fourth extension 215 extends leftwardly from the rightwardmost end of the boss 11 to the leftmost end of the boss 11 to form a fifth extension 216.
The second radiator 22 is disposed at the right of the first radiator 21, and the second radiator 22 is disposed at the bottom of the front surface of the boss 11. The left end of the second radiator 22 has a sixth extension 221 formed to extend upward. The right end of the second radiator 22 extends downward to the lower surface of the boss 11 to form a first grounding portion 222, and the first grounding portion 222 is connected to the grounding region 12. The first radiator 21 and the second radiator 22 in the first antenna part 2 each have a bandwidth of 704MHz to 960 MHz.
A recess 23 is formed below the fourth extension 215 of the first radiator 21 on the upper surface of the boss 11. This groove 23 and the third extension 214 have the effect of frequency doubling so that the first antenna part 2 has a bandwidth of 1710MHz to 2170 MHz.
The second antenna portion 3 is formed by extending the first extension portion 211 to the right side. The second antenna portion 3 is connected to the top end of the sixth extension portion 221 of the second radiator 22. The second antenna portion 3 further extends to the right to form a seventh extending portion 31. The seventh extension 31 is wider than the second antenna portion 3. The second antenna section 3 has a bandwidth of 2300MHz to 2600 MHz.
The third antenna portion 4 is disposed at the bottom of the front surface of the boss 11 and located between the first radiator 21, the second radiator 22 and the second antenna portion 3. A gap G is formed between the third antenna portion 4 and the second antenna portion 3, and the gap G has the effect of increasing the bandwidth. The left end of the third antenna part 4 extends downward to the lower surface of the boss 11 to form a second grounding part 41, and the second grounding part 41 is connected with the grounding area 12. The third antenna unit 4 has a bandwidth of 3300MHz to 3800 MHz.
The fourth antenna portion 5 includes a third radiator 51 and a fourth radiator 52. The third radiator 51 is disposed on the left of the feeding portion 211 of the first radiator 21. The third radiator 51 has an eighth extension portion 511 formed to extend upward. The eighth extension 511 is wider than the third radiator 51. The third radiator 51 extends downward to the lower surface of the boss 11 to form a third grounding portion 512, and the third grounding portion 512 is connected to the grounding region 12. The fourth radiator 52 is formed by extending the feeding portion 211 leftward. The fourth radiator 52 has a ninth extending portion 521 formed to extend to the left. The ninth extension 521 is wider than the fourth radiator 52. The third radiator 51 has a bandwidth of 4400MHz to 5000 MHz. The third radiator 51 is coupled to the fourth radiator 52, so that the fourth antenna portion 5 simultaneously increases bandwidths of two frequency bands of 3300 to 3800MHz and 4400 to 5000 MHz.
Referring to fig. 3 and 5, a Voltage Standing Wave Ratio (VSWR) test chart and a smith chart of the antenna structure 100 of the present invention are shown. When the antenna structure 100 of the present invention operates at 704MHz, the vswr is 6.5449 (M1 in the figure), when the antenna structure 100 of the present invention operates at 960MHz, the vswr is 6.4916 (M2 in the figure), when the antenna structure 100 of the present invention operates at 1710MHz, the vswr is 2.998 (M3 in the figure), when the antenna structure 100 of the present invention operates at 2170MHz, the vswr is 2.6258 (M4 in the figure), when the antenna structure 100 of the present invention operates at 2300MHz, the vswr is 2.2879 (M5 in the figure), when the antenna structure 100 of the present invention operates at 2690MHz, the vswr is 2.4559 (M6 in the figure), when the antenna structure 100 of the present invention operates at 3300MHz, the vswr is 2.6523 (M7 in the figure), when the antenna structure 100 of the present invention operates at 3800MHz, the vswr is 2.3726 (M8 in the figure), when the antenna structure 100 of the present invention operates at 3300MHz, the voltage standing wave ratio is 4402 (M9 in the figure), when the antenna structure 100 of the present invention operates at 5000MHz, the vswr is 5.0647 (M10). Therefore, the multi-band antenna 100 of the present invention can be stably operated in the frequency band ranges of 704-960MHz, 1710-2170MHz, 2300-2600 MHz.
Referring to fig. 5, an equivalent omni-directional radiation power diagram of the antenna structure 100 of the present invention is disclosed, which shows the maximum value of radiation at each frequency of the antenna structure 100 of the present invention. In this embodiment, the peak value of the equivalent omni-directional radiation power in the full frequency band falls within the same range, i.e. the power is stable.
| Bandwidth of | Frequency (MHZ) | Efficiency (%) |
| 700 | 704-824 | 55.56 |
| 800 | 791-894 | 60.72 |
| 900 | 880-960 | 50.47 |
| 1800 | 1710-1890 | 77.71 |
| 1900 | 1845-1995 | 77.98 |
| 2100 | 1920-2170 | 69.22 |
| 2300 | 2300-2360 | 71.84 |
| 2600 | 2500-2690 | 76.86 |
| 3500 | 3300-3800 | 53.98 |
| 4500 | 4400-5000 | 46.21 |
TABLE 1
Referring to fig. 6, fig. 7 and table 1, a radiation power diagram, a radiation efficiency diagram and a radiation efficiency average value table of each frequency band of the antenna structure 100 of the present invention are respectively disclosed. Wherein the radiation power can be converted with the radiation efficiency. The radiation efficiency means the efficiency of converting average power into antenna radiation, and at different frequencies, the higher the efficiency value, the better. In the embodiment, the low frequency bandwidth is over 50%, so the multi-band antenna 100 of the present invention can achieve high efficiency of the low frequency bandwidth in a limited space and can maintain the bandwidth and efficiency of the high frequency.
As mentioned above, the antenna structure 100 of the present invention is an inverted-F antenna of 704MHz-960MHz, 1710MHz-2170MHz, and 2300MHz-2600 MHz. The other resonant frequencies are generated by using the parasitic and coupling modes, which can increase the bandwidth range by using the mutual addition and superposition of the harmonic wave of the main frequency and the coupled frequency, so that the antenna structure 100 of the present invention can be applied in a wider frequency range, and the area can be used more effectively without occupying too much space.
Claims (9)
1. An antenna structure, characterized by: the grounding plate comprises a grounding plate, wherein a boss which is formed by protruding forwards is arranged on the upper part of the front surface of the grounding plate, and the lower surface of the boss is connected with a grounding area; the first antenna part comprises a first radiator and a second radiator, the first radiator is arranged on the boss, the first radiator extends from the front surface of the boss to the lower surface of the boss to form a feed-in part, the feed-in part is not connected with the grounding area, the second radiator is arranged on the right side of the first radiator, the second radiator is arranged at the bottom of the front surface of the boss, the second radiator is connected with the grounding area, and the upper surface of the boss is also provided with a groove formed by depression; the second antenna part is formed by extending the first radiating body to the right side and is connected with the second radiating body; a third antenna part, disposed at the bottom of the front surface of the boss and located between the first radiator, the second radiator and the second antenna part, wherein a gap is formed between the third antenna part and the second antenna part, the gap has the effect of increasing the bandwidth, and the third antenna part is connected to the grounding area; and the fourth antenna part comprises a third radiator and a fourth radiator, the third radiator is arranged at the left side of the feed-in part of the first radiator, the third radiator is connected with the grounding area, and the fourth radiator is formed by extending the feed-in part to the left.
2. The antenna structure of claim 1, characterized in that: the first radiator has one and follows the first extension that extends to the top in the bottom of boss front surface, first extension extends to the lower surface formation of boss from the front surface of boss the feed-in portion, feed-in portion do not with the ground connection district links to each other, the top of first extension extends right and forms a second extension, the second extension extends right again and forms a third extension to the right-hand member of boss, the third extension by the front surface of boss upwards extends to the upper surface of boss forms a fourth extension, the fourth extension by the right-hand member of boss extends left to the left-hand member of boss forms a fifth extension.
3. The antenna structure of claim 2, characterized in that: the groove is formed by recessing the lower part of the fourth extending part of the first radiator on the upper surface of the boss, and the groove and the third extending part have the effect of frequency doubling.
4. The antenna structure of claim 2, characterized in that: the left end of the second radiator is provided with a sixth extending part which extends upwards, the right end of the second radiator extends downwards to the lower surface of the boss to form a first grounding part, and the first grounding part is connected with the grounding area.
5. The antenna structure of claim 1, characterized in that: the second antenna part extends to the right to form a seventh extending part.
6. The antenna structure of claim 1, characterized in that: the left end of the third antenna part extends downwards to the lower surface of the boss to form a second grounding part, and the second grounding part is connected with the grounding area.
7. The antenna structure of claim 1, characterized in that: the third radiator is provided with an eighth extending part formed by extending upwards.
8. The antenna structure of claim 1, characterized in that: the third radiator extends downwards to the lower surface of the boss to form a third grounding part, and the third grounding part is connected with the grounding area.
9. The antenna structure of claim 1, characterized in that: the fourth radiator is provided with a ninth extending part formed by extending leftwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121607149.8U CN216354802U (en) | 2021-07-15 | 2021-07-15 | Antenna structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121607149.8U CN216354802U (en) | 2021-07-15 | 2021-07-15 | Antenna structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216354802U true CN216354802U (en) | 2022-04-19 |
Family
ID=81160934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121607149.8U Active CN216354802U (en) | 2021-07-15 | 2021-07-15 | Antenna structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216354802U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI844040B (en) | 2022-06-20 | 2024-06-01 | 宏碁股份有限公司 | Mobile device with high radiation efficiency |
-
2021
- 2021-07-15 CN CN202121607149.8U patent/CN216354802U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI844040B (en) | 2022-06-20 | 2024-06-01 | 宏碁股份有限公司 | Mobile device with high radiation efficiency |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7136025B2 (en) | Dual-band antenna with low profile | |
| Lin et al. | Simple printed multiband antenna with novel parasitic-element design for multistandard mobile phone applications | |
| US20100060528A1 (en) | Dual-frequency antenna | |
| KR101163419B1 (en) | Hybrid Patch Antenna | |
| Jin et al. | Frequency reconfigurable multiple-input multiple-output antenna with high isolation | |
| CN111326857B (en) | Multi-frequency antenna structure and communication equipment | |
| US8593354B2 (en) | Multi-band antenna | |
| US20120162022A1 (en) | Multi-band antenna | |
| CN102916255B (en) | Multi-frequency inverted F-shaped antenna | |
| CN101471486A (en) | An antenna | |
| TWI446626B (en) | Wideband antenna for mobile communication | |
| CN2476881Y (en) | Built-in planar aerial for mobile phone | |
| JP2003174317A (en) | Multi-band patch antenna and skeleton slot radiator | |
| KR20050106533A (en) | Multi-band laminated chip antenna using double coupling feeding | |
| CN202817178U (en) | Dual-frequency monopole antenna and its mobile terminal | |
| CN216354802U (en) | Antenna structure | |
| CN215418605U (en) | Multi-frequency antenna | |
| CN101359763B (en) | Double-frequency antenna | |
| US8081136B2 (en) | Dual-band antenna | |
| CN110165395B (en) | Miniaturized compact three-frequency-band antenna | |
| CN215418604U (en) | Multi-frequency antenna | |
| CN217062503U (en) | Antenna structure | |
| TWM618354U (en) | Antenna structure | |
| CN217062502U (en) | Antenna structure | |
| CN217062504U (en) | Multi-frequency antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |