CN203721886U - Dipolar antenna - Google Patents
Dipolar antenna Download PDFInfo
- Publication number
- CN203721886U CN203721886U CN201420094675.2U CN201420094675U CN203721886U CN 203721886 U CN203721886 U CN 203721886U CN 201420094675 U CN201420094675 U CN 201420094675U CN 203721886 U CN203721886 U CN 203721886U
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- CN
- China
- Prior art keywords
- radiant element
- dipole antenna
- substrate
- antenna
- load point
- 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.)
- Expired - Fee Related
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- Variable-Direction Aerials And Aerial Arrays (AREA)
- Details Of Aerials (AREA)
Abstract
The utility model discloses a dipolar antenna comprising a substrate provided with a first irradiation element and a second irradiation element arranged at an interval; the first and second irradiation elements are both provided with two bending portions; a first feed-in point is arranged between two bending portions of the first irradiation element; a second feed-in point is arranged between two bending portions of the second irradiation element; the dipolar antenna is small in size, and can provide multi-frequency range sharing property.
Description
Technical field
The utility model relates to a kind of dipole antenna, belongs to communication element field.
Background technology
Flourish along with wireless communication technology, electronic product now has radio communication function mostly, makes it can support the technology such as Wi-Fi or WWAN, to replace traditional LAN wire communication mode.Radio communication sees through antenna launches or receives radio wave, to transmit or to exchange radio signals.Wireless network communication system has a plurality of frequency ranges, for example at country variant TDD, FDD, be all operated in different frequency ranges, for example the working frequency range at U.S. FDD is 850MHz, in Asia, be mostly operated in 850MHz or 2100MHz, therefore how develop the trend that a kind of antenna that can simultaneously work in a plurality of frequency ranges becomes current research.
In the prior art, normally adopt two radiant elements that vary in size, by adjusting its length and shape, make the fundamental frequency signal of antenna and frequency-doubled signal meet respectively two frequency ranges, but this kind of mode antenna gain, efficiency are lower, complex structure cannot be used on the communication devices such as mobile phone.
Summary of the invention
For the needs of prior art, the utility model provides a kind of antenna that is operated in a plurality of frequency ranges, its simple in structure, dependable performance.
For achieving the above object, the utility model is achieved through the following technical solutions:
Dipole antenna, comprises substrate, has the first alternate radiant element, the second radiant element on substrate, and the first radiant element, the second radiant element all have two kinks; Between two kinks of the first radiant element, there is the first load point; Between two kinks of the second radiant element, there is the second load point.
Wherein, the distance between above-mentioned two load points is two spacing between radiant element.
In the utility model, for the current resonance path of different length is provided, the first half and the latter half of the first radiant element are asymmetric, the first half of the second radiant element and the latter half are also asymmetric, thereby can produce the current resonance path of many different lengths, be at least the current resonance path of two different lengths, by these two approach, can allow antenna be operated in two different frequency ranges simultaneously.
In the utility model, kink inner side is right angle, and exterior angle is oblique angle.
In order to reduce production costs, reduce wiring difficulty, the first radiant element, the second radiant element are with respect to substrate center symmetrical (be about to the first radiant element and penetrate element axis symmetry with the second width after transverse axis Rotate 180 degree).
In the utility model, in order to improve the useful life of antenna, described substrate is FR4 epoxy resin fiberglass plate.
For signal transmission, the first load point and the second load point are connected to respectively coaxial transmission line.
Accompanying drawing explanation
Fig. 1 is the structure of the utility model dipole antenna;
Fig. 2 A, 2B are respectively that the utility model dipole antenna is operated in 850, the current path under 2100MHz frequency.
Embodiment
Shown in accompanying drawing 1, dipole antenna comprises substrate 200, on substrate, etching has the first radiant element 202 and the second width to penetrate element 204, the first radiant element has kink 2020,2022, the second width is penetrated element and is had kink 2040,2042, mid point in kink 2020 and 2022 has the first load point 208, at the mid point of kink 2040,2042, has the spacing 206 that distance between 210, two load points of the second load point is two radiant elements.
When assembling, the first and second load points 208,210 are connected to respectively coaxial transmission alignment electronic product transmission of wireless signals are provided.
Wherein, it is symmetrical that the first radiant element 202 and the second width are penetrated element 204Yan substrate center.
Wherein, the first half A1 of the first radiant element 202 and the latter half B1 are asymmetric, same, and the first half A2 of the second radiant element 204 and the latter half B2 are asymmetric, due to this unsymmetric structure, dipole antenna 20 at least can have the current resonance path of two different lengths.
As shown in Fig. 2 A, 2B, a paths is the latter half B2 via spacing 206 to second radiant elements 204 from first radiant element 202 the first half A1, and dipole antenna resonates in lower frequency range.For example, when this paths overall length is 253mm, dipole antenna can resonate in 850MHz frequency range; Another paths is the latter half B1 via spacing 206 to first radiant elements 202 from the first half A2 of the second radiant element 204, and dipole antenna resonates in higher frequency range.For example, when the overall length of this paths is 60mm, dipole antenna resonates in 2.16Hz frequency range.That is to say, in this case, this antenna can provide the signal transmitting and receiving ability under two kinds of frequency ranges of FDD simultaneously.
By adjusting overbending direction and the position of radiant element, add suitable spacing, capable of being combinedly go out many current resonance paths, make dipole antenna work in a plurality of frequency ranges.
Claims (5)
1. dipole antenna, is characterized in that comprising substrate, has the first alternate radiant element, the second radiant element on substrate, and the first radiant element, the second radiant element all have two kinks; Between two kinks of the first radiant element, there is the first load point; Between two kinks of the second radiant element, there is the second load point.
2. dipole antenna according to claim 1, is characterized in that described kink inner side is right angle, and exterior angle is oblique angle.
3. dipole antenna according to claim 1, is characterized in that the first radiant element, the second radiant element are symmetrical with respect to substrate center.
4. dipole antenna according to claim 1, is characterized in that described substrate is FR4 epoxy resin fiberglass plate.
5. dipole antenna according to claim 1, is characterized in that the first load point and the second load point are connected to respectively coaxial transmission line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420094675.2U CN203721886U (en) | 2014-03-03 | 2014-03-03 | Dipolar antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420094675.2U CN203721886U (en) | 2014-03-03 | 2014-03-03 | Dipolar antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203721886U true CN203721886U (en) | 2014-07-16 |
Family
ID=51161016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420094675.2U Expired - Fee Related CN203721886U (en) | 2014-03-03 | 2014-03-03 | Dipolar antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203721886U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022088410A1 (en) * | 2020-10-27 | 2022-05-05 | 深圳市大疆创新科技有限公司 | Antenna assembly and unmanned aerial vehicle |
-
2014
- 2014-03-03 CN CN201420094675.2U patent/CN203721886U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022088410A1 (en) * | 2020-10-27 | 2022-05-05 | 深圳市大疆创新科技有限公司 | Antenna assembly and unmanned aerial vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140716 Termination date: 20150303 |
|
| EXPY | Termination of patent right or utility model |