CN201204260Y - Dual-frequency element antenna for printed circuit board - Google Patents
Dual-frequency element antenna for printed circuit board Download PDFInfo
- Publication number
- CN201204260Y CN201204260Y CNU2008201083336U CN200820108333U CN201204260Y CN 201204260 Y CN201204260 Y CN 201204260Y CN U2008201083336 U CNU2008201083336 U CN U2008201083336U CN 200820108333 U CN200820108333 U CN 200820108333U CN 201204260 Y CN201204260 Y CN 201204260Y
- Authority
- CN
- China
- Prior art keywords
- printed circuit
- circuit board
- antenna
- element antenna
- pcb
- 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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Abstract
A printed circuit board dual-band element antenna includes a printed circuit board, and two metal sleeves with C-shaped cross-section which are provided around the printed circuit board. The equivalent lengths of the metal sleeves are corresponding to the electromagnetic wave signals required to receive, the element antenna produces a resonance to radiate electromagnetic wave, wherein, an element antenna is located at one end of the printed circuit board and is connected to a communication machine through current feed lines. The utility model has advantages of simple structure, excellent performance; wide antenna frequency bandwidth; low standing wave (with a voltage standing wave ratio smaller than 2.0); high band-width use ratio of the low frequency terminal and high-frequency terminal which is 30 percent after improving three times than that before improving; stability; fewer parts; easy mass production; low cost; and good directivity compared with the existing antenna (the novel antenna improves 2dB than that of the existing antenna at the low frequency terminal; and in the high-frequency terminal, the novel antenna is principally centralized in the 0 degree direction, has no side lobe and has a gain 3dB higher than that of the existing antenna).
Description
Technical field
Utility model relates to a kind of double frequency element antenna, and particularly a kind of employing printed circuit board (PCB) and two metal tube structures realize double frequency (half-wavelength) element antenna.
Technical background
There is certain shortcoming in existing half-wavelength element antenna, and for example: frequency bandwidth is not enough, defectives such as leakage current is big, no direct current protecting.Therefore, be necessary to provide a kind of novel double frequency element antenna.
Summary of the invention
The purpose of this utility model provides a kind of printed circuit board (PCB) double frequency element antenna, and this antenna cost is low, easily produces in enormous quantities, economize on resources, and performance improves.
To achieve the above object of the invention, the utility model is by the following technical solutions: this printed circuit board (PCB) double frequency element antenna, it comprises: printed circuit board (PCB), be positioned at two c-shaped joint metal sleeves of the cross section of printed circuit panel area, they constitute the double frequency element antenna, their equivalent lengths are corresponding with need reception electromagnetic wave signal respectively, element antenna produces resonance, and the end that width of cloth radio magnetic wave, one of them element antenna are positioned at printed circuit board (PCB) is connected to communication equipment by the current feed line.
1/2 wavelength of described equivalent length and electromagnetic wave signal or 3/8 wavelength or 5/8 wavelength produce resonance.
The equivalent length of the two joint metal sleeves that described cross section is c-shaped is respectively 1/4 wavelength.
Connect in the printed circuit board (PCB) on the contact of current feed line and connect 1/2 a wavelength microstrip line as short circuit.
Advantage of the present utility model: 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 structural representation of existing double frequency element antenna
Fig. 2: the utility model structural representation
Fig. 3: after removing C type 1/4 λ oscillator I, II, structural representation of the present utility model
The rearview of Fig. 4: Fig. 3
Fig. 5: be C type 1/4 λ among Fig. 1
1The structure chart of oscillator I
Fig. 6: existing aerial voltage standing-wave ratio
Fig. 7: existing antenna low frequency directional diagram
Fig. 8: existing antenna high frequency direction figure
Fig. 9: the utility model voltage standing wave ratio
Figure 10: the utility model low frequency directional diagram
Figure 11: the utility model high frequency direction figure
Embodiment
Among Fig. 1,1 ' is oscillator (1/4 λ
1), 2 ' is oscillator (1/4 λ
2).As Fig. 2～shown in Figure 11, the utility model comprises: printed circuit board (PCB) (PCB) 3 and be positioned at around the circuit board, the cross section is C type 1/4 λ metal sleeve I1 and metal sleeve II2 (oscillator), wherein 1-1 is the breach (see figure 5) of metal sleeve, adopt the C type disconnected to the oscillator structure to improve production and volume production operability.Among Fig. 3,3-1 is the copper sake that is located at PCB top, it and metal sleeve I coupling, 4 is distributing point, by coaxial line 4-1 be located at PCB and link to each other.4-2 and 4-3 are respectively coaxial outer conductor and inner wire and PCB junction.Among Fig. 4,5 is 1/2 λ short-circuiting devices, is microstrip line ground connection (being that direct current does not have protector along separate routes).
The utility model voltage standing wave ratio (see figure 9) and existing aerial voltage standing-wave ratio (see figure 6) are made comparisons:
Among the figure, the pairing frequency of gauge point is:
1 point--824MHz, 2 point--894MHz, 3 point--1850MHz, 4 point--1990MHz;
Among Fig. 6, voltage standing wave ratio: 1 point-2.8 2 point--2.7 3 point-4.0 4 point-4.0
Among Fig. 9, voltage standing wave ratio: 1 point-1.3 2 point-1.5 3 point-1.5 4 point-1.7
Can see: the bandwidth of the utility model antenna, standing wave is low.The antenna low frequency end after the improvement and the bandwidth availability ratio of front end reach 30%, are 3 times before improving.And voltage standing wave ratio is less than 2.0; In addition, the directivity of the utility model antenna and the directivity of existing antenna are made comparisons: at low frequency end, new antenna has improved 2dB than existing antenna gain.At front end, new antenna and existing antenna are on directivity, and the former mainly concentrates on 0 degree direction, and the no secondary lobe and the high 3dB. latter's directional diagram secondary lobe that gains are many, and it is low to gain.
Claims (4)
1, a kind of printed circuit board (PCB) double frequency element antenna, it is characterized in that: it comprises: printed circuit board (PCB), be positioned at two c-shaped joint metal sleeves of the cross section of printed circuit panel area, they constitute the double frequency element antenna, their equivalent lengths are corresponding with need reception electromagnetic wave signal respectively, element antenna produces resonance, the end that width of cloth radio magnetic wave, one of them element antenna are positioned at printed circuit board (PCB) is connected to communication equipment by the current feed line.
2, a kind of printed circuit board (PCB) double frequency element antenna according to claim 1 is characterized in that: 1/2 wavelength of described equivalent length and electromagnetic wave signal or 3/8 wavelength or 5/8 wavelength produce resonance.
3, a kind of printed circuit board (PCB) double frequency element antenna according to claim 1 and 2 is characterized in that: the equivalent length of the two joint metal sleeves that described cross section is c-shaped is respectively 1/4 wavelength.
4, a kind of printed circuit board (PCB) double frequency element antenna according to claim 1 and 2 is characterized in that: connect in the printed circuit board (PCB) on the contact of current feed line and connect 1/2 a wavelength microstrip line as short circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201083336U CN201204260Y (en) | 2008-06-02 | 2008-06-02 | Dual-frequency element antenna for printed circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201083336U CN201204260Y (en) | 2008-06-02 | 2008-06-02 | Dual-frequency element antenna for printed circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201204260Y true CN201204260Y (en) | 2009-03-04 |
Family
ID=40426575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201083336U Expired - Fee Related CN201204260Y (en) | 2008-06-02 | 2008-06-02 | Dual-frequency element antenna for printed circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201204260Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107248617A (en) * | 2017-07-20 | 2017-10-13 | 广东曼克维通信科技有限公司 | Micro-strip paster antenna |
| CN110277631A (en) * | 2019-06-14 | 2019-09-24 | 深圳市道通智能航空技术有限公司 | A kind of dual-band antenna and aircraft |
-
2008
- 2008-06-02 CN CNU2008201083336U patent/CN201204260Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107248617A (en) * | 2017-07-20 | 2017-10-13 | 广东曼克维通信科技有限公司 | Micro-strip paster antenna |
| CN110277631A (en) * | 2019-06-14 | 2019-09-24 | 深圳市道通智能航空技术有限公司 | A kind of dual-band antenna and aircraft |
| CN110277631B (en) * | 2019-06-14 | 2024-11-01 | 深圳市道通智能航空技术股份有限公司 | Dual-frenquency 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: 20090304 Termination date: 20130602 |