CN201438502U - Dual-frequency broadband double-dipole antenna - Google Patents
Dual-frequency broadband double-dipole antenna Download PDFInfo
- Publication number
- CN201438502U CN201438502U CN 200920110365 CN200920110365U CN201438502U CN 201438502 U CN201438502 U CN 201438502U CN 200920110365 CN200920110365 CN 200920110365 CN 200920110365 U CN200920110365 U CN 200920110365U CN 201438502 U CN201438502 U CN 201438502U
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- CN
- China
- Prior art keywords
- pcb
- circuit board
- dipole antenna
- double
- frequency broadband
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- 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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Abstract
The utility model discloses a dual-frequency broadband double-dipole antenna, which comprises a printed circuit board (PCB) and bonded copper on the circuit board. The bonded copper contains upper bonded copper and lower bonded copper arranged at the front face of the PCB, the equivalent length of the bonded copper is that of an oscillator with 1/4 wavelength, and the oscillator is connected with a communication machine through a current feeder. The dual-frequency broadband double-dipole antenna has the advantages of simple structure, excellent performance, stability, few parts, easy mass production and low cost.
Description
Technical field
Utility model relates to a kind of double-frequency broadband double dipole antenna, and particularly a kind of is adopted attached copper realization double frequency (half-wavelength) element antenna on printed circuit board (PCB) and the circuit board.
Technical background
Defectives such as there is certain shortcoming in existing half-wavelength element antenna, and for example: frequency bandwidth is not enough, and leakage current is big.Therefore, be necessary to provide a kind of double-frequency broadband double dipole antenna.
Summary of the invention
The purpose of this utility model provides a kind of double-frequency broadband double dipole antenna, and this antenna cost is low, easily produces in enormous quantities, economize on resources, and the performance height.
To achieve the above object of the invention, this is by the following technical solutions practical:
This double-frequency broadband double dipole antenna, it comprises: the attached copper of printed circuit board (PCB), circuit board top, described attached copper contains upper and lower each the attached copper that is positioned at the printed circuit board (PCB) front, and this attached copper is the oscillator that equivalent length is respectively 1/4 wavelength, and oscillator is connected to communication equipment by the current feed line.
Their equivalent lengths are corresponding with need reception electromagnetic wave signal respectively, and element antenna produces resonance, width of cloth radio magnetic wave.1/2 wavelength of equivalent length and electromagnetic wave signal or 1/4 wavelength produce resonance.
The utility model advantage: simple in structure, function admirable, stable, few, the easy production in enormous quantities of number of components, cost is low.
Description of drawings
Fig. 1: the utility model structural representation (front)
The rearview of Fig. 2: Fig. 1 (back side)
Fig. 3: aerial voltage standing wave
Fig. 4: antenna low frequency directional diagram
Fig. 5: antenna high frequency direction figure
Embodiment
Among Fig. 1～Fig. 2, the utility model comprises: 3-1 is printed circuit board (PCB) (PCB).Among Fig. 1,1-1,1-2,2-1,2-2,2-3 are the attached copper that is located on the PCB, 2-2,2-3 are the back side that is positioned at PCB.
1-1,1-2 are that equivalent length is 1/4 λ oscillator, are positioned at the front of PCB, and oscillator 1-2 can make three forked types, can pass through the length of three forks of this oscillator of adjustment, thereby adjust the radiation direction of antenna high frequency.The length of three forks can be identical or inequality.
2-1,2-2,2-3 are the coupling copper face that antenna match is used, and make feed system and oscillator reach optimum Match by adjusting this coupling copper face.
4 is distributing point, links to each other with PCB by coaxial line 4-1.4-2 and 4-3 are respectively coaxial inner conductor and outer conductor and PCB junction.
Among Fig. 3, abscissa is a frequency, and ordinate is a standing-wave ratio, and among Fig. 3, mark 1 is 824.000MHz, and standing-wave ratio is 1.472; Mark 2 is 894.000MHz, and standing-wave ratio is 1.633; Mark 3 is 1850.000MHz, and standing-wave ratio is 1.438; Mark 4 is 1900.000MHz, and standing-wave ratio is 1.128.
The bandwidth of this practical antenna, standing wave is low, and the bandwidth availability ratio of antenna low frequency end and front end reaches 30%, is 3 times of general half-wavelength element antenna. and voltage standing wave ratio is less than 2.0; In addition, the directivity of this practical antenna: at low frequency end, the general doublet antenna gain of this antenna ratio improves 2dB. at front end, and this antenna lobe mainly concentrates on 0 degree direction, no secondary lobe, and antenna gain improves 2dB.
Claims (3)
1. double-frequency broadband double dipole antenna, it is characterized in that: it comprises: the attached copper of printed circuit board (PCB), circuit board top, described attached copper contains upper and lower each the attached copper that is positioned at the printed circuit board (PCB) front, this attached copper is the oscillator that equivalent length is respectively 1/4 wavelength, and oscillator is connected to communication equipment by the current feed line.
2. a kind of double-frequency broadband double dipole antenna according to claim 1 is characterized in that: be provided with the attached copper of the coupling of using with antenna match at the back side of printed circuit board (PCB).
3. a kind of double-frequency broadband double dipole antenna according to claim 1 and 2, it is characterized in that: the oscillator that is positioned at the top in printed circuit board (PCB) front is three forked types, and the length of three forks is identical or inequality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920110365 CN201438502U (en) | 2009-07-28 | 2009-07-28 | Dual-frequency broadband double-dipole antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920110365 CN201438502U (en) | 2009-07-28 | 2009-07-28 | Dual-frequency broadband double-dipole antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201438502U true CN201438502U (en) | 2010-04-14 |
Family
ID=42400473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920110365 Expired - Fee Related CN201438502U (en) | 2009-07-28 | 2009-07-28 | Dual-frequency broadband double-dipole antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201438502U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109417223A (en) * | 2017-09-08 | 2019-03-01 | 深圳市大疆创新科技有限公司 | Circular polarisation dual-band antenna |
| CN110931965A (en) * | 2019-10-25 | 2020-03-27 | 深圳市道通智能航空技术有限公司 | Dual-band antenna and aircraft |
| CN111883922A (en) * | 2017-05-22 | 2020-11-03 | 深圳市大疆创新科技有限公司 | Antenna and unmanned aerial vehicle's signal processing equipment |
-
2009
- 2009-07-28 CN CN 200920110365 patent/CN201438502U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111883922A (en) * | 2017-05-22 | 2020-11-03 | 深圳市大疆创新科技有限公司 | Antenna and unmanned aerial vehicle's signal processing equipment |
| CN111883922B (en) * | 2017-05-22 | 2023-05-30 | 深圳市大疆创新科技有限公司 | Antenna and unmanned aerial vehicle's signal processing equipment |
| CN109417223A (en) * | 2017-09-08 | 2019-03-01 | 深圳市大疆创新科技有限公司 | Circular polarisation dual-band antenna |
| WO2019047179A1 (en) * | 2017-09-08 | 2019-03-14 | 深圳市大疆创新科技有限公司 | Circularly polarized dual-frequency antenna |
| CN109417223B (en) * | 2017-09-08 | 2022-01-14 | 深圳市大疆创新科技有限公司 | Circularly polarized dual-band antenna |
| CN110931965A (en) * | 2019-10-25 | 2020-03-27 | 深圳市道通智能航空技术有限公司 | Dual-band antenna and aircraft |
| CN110931965B (en) * | 2019-10-25 | 2022-05-17 | 深圳市道通智能航空技术股份有限公司 | Dual-band antenna and aircraft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100414 Termination date: 20130728 |