CN102055076A - Dual-frequency PCB antenna - Google Patents
Dual-frequency PCB antenna Download PDFInfo
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- CN102055076A CN102055076A CN 200910211195 CN200910211195A CN102055076A CN 102055076 A CN102055076 A CN 102055076A CN 200910211195 CN200910211195 CN 200910211195 CN 200910211195 A CN200910211195 A CN 200910211195A CN 102055076 A CN102055076 A CN 102055076A
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- radiating surface
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Abstract
The invention relates to a dual-frequency PCB antenna, which is electrically connected with a feed line and comprises a substrate, wherein a radiating surface and a grounding surface are sputtered on front and reverse sides of the substrate by copper foil and electrically connected through a conducting hole; the radiating surface comprises a N-shaped microstrip transmission line; a first vibrator and a second vibrator are arranged on the two sides of the microstrip transmission line respectively; and a compensation capacitor is arranged on the area of the radiating surface not sputtered with copper foil. The dual-frequency PCB antenna has the advantages of simple structure, low cost, excellent radiating effect, and facilitation of debugging.
Description
Technical field
The present invention relates to a kind of dual-band antenna, relate in particular to a kind of dual-frequency P CB antenna that is applied to WLAN (wireless local area network).
Background technology
Continuous development along with wireless communication technology, the communicator microminiaturization has become inevitable trend, there is an important problem to take into account, the also necessary microminiaturization as far as possible of the Antenna Design of corresponding communicator, the PCB antenna is highly lower because of it, be easy to built-in and preferable gain effect, be a kind of miniature antenna that is applicable to communication terminal commonly used, it has adapted to the trend of electronic installation microminiaturization and design simplification.
The wireless LAN communication agreement of carrying out mainly comprises IEEE802.11b and two kinds of standards of IEEE802.11a at present, they have become present mainstream standard, and obtained using very widely, wherein the working frequency range of IEEE802.11b is mainly 2.42.5GHz, and the working frequency range of IEEE802.11a is mainly 5.15-5.35GHz, can on a plurality of frequency ranges, work in order to make the single communication device, how to allow miniature antenna can have the operating frequency of double frequency or multifrequency, become the research staff and attempted the research topic that solves one after another.
But dual-frequency P CB antenna often needs storehouse that multilager base plate is set at present, and not only cost is higher, and processing procedure is also comparatively complicated, the more important thing is that radiation effect is also not ideal enough, is difficult for debugging.
Be directed to above-mentioned situation, be necessary to provide a kind of dual-frequency P CB antenna in fact, this dual-frequency P CB antenna is not only simple in structure, and cost is low, and radiation effect is good, is easy to debugging, to overcome the defective of dual-frequency P CB antenna in the prior art.
Summary of the invention
Purpose of the present invention just provides a kind of dual-frequency P CB antenna, and this dual-frequency P CB antenna is not only simple in structure, and cost is low, and radiation effect is good, is easy to debugging.
For reaching above-mentioned purpose, the invention provides a kind of dual-frequency P CB antenna, this dual-frequency P CB antenna with electrically connect with a feeder line, it comprises substrate, and the positive and negative of described substrate has radiating surface and ground plane with the Copper Foil sputter, is provided with via on described radiating surface and the ground plane, described radiating surface comprises microstrip transmission line, wherein, the both sides of described microstrip transmission line are respectively arranged with first oscillator and second oscillator, and are provided with building-out capacitor in the zone that described radiating surface is not provided with Copper Foil.
Especially, described microstrip transmission line is " N " type structure.
Especially, first oscillator and the second oscillator junction are provided with a feedback point on the described microstrip transmission line.
Especially, described second oscillator is shorter in length than first oscillator, and the length of described first oscillator and second oscillator 1/4 wavelength of corresponding operating frequency respectively.
Compared to prior art, the invention provides a kind of dual-frequency P CB antenna, this dual-frequency P CB antenna is not only simple in structure, and cost is low, and radiation effect is good, is easy to debugging.
Description of drawings
With embodiment the present invention is described in further detail with reference to the accompanying drawings below.
Fig. 1 is the structural representation of the positive and negative of the embodiment of the invention.
Among the figure:
1, radiating surface; 2, ground plane; 3, via; 4, microstrip transmission line; 5, first oscillator; 6, second oscillator; 7, feedback point; 8, building-out capacitor.
Embodiment
Please refer to shown in Figure 1ly, Fig. 1 is the structural representation of the positive and negative of the embodiment of the invention.The invention provides a kind of dual-frequency P CB antenna, a described dual-frequency P CB antenna and a feeder line (not illustrating among the figure) electrically connect, described dual-frequency P CB antenna comprises substrate, the positive and negative of described substrate has radiating surface 1 and ground plane 2 with the Copper Foil sputter respectively, be provided with via 3 on described radiating surface 1 and the ground plane 2, utilize this via 3 that radiating surface 1 and ground plane 2 are electrically connected, and described radiating surface 1 comprises microstrip transmission line 4, described microstrip transmission line 4 is " N " type structure, and the both sides of described microstrip transmission line 4 are respectively arranged with first oscillator 5 and second oscillator 6, and first oscillator 5 and second oscillator, 6 junctions are provided with a feedback point 7 on described microstrip transmission line 4, described second oscillator 6 be shorter in length than first oscillator 5, and 1/4 wavelength of respectively corresponding its operating frequency of the length of first oscillator 5 and second oscillator 6, and the zone that described radiating surface 1 is not provided with Copper Foil is provided with building-out capacitor 8, be used to debug the impedance operator of antenna, make antenna be convenient to debugging.
The invention provides a kind of dual-frequency P CB antenna, this dual-frequency P CB antenna is not only simple in structure, and cost is low, and radiation effect is good, is easy to debugging.
Fig. 1 is the structural representation of the positive and negative of the embodiment of the invention; but a kind of dual-frequency P CB antenna of the present invention is not limited to arrangement mode and this a kind of shape of this a kind of assembly; as shown in Figure 1; satisfying on the basis of its function; can change along with the change that the position is set of building-out capacitor and feedback point; the change that anyone makes arrangements of components mode of the present invention, model and shape on principle of the present invention basis has easily then all fallen into protection scope of the present invention.
Claims (4)
1. dual-frequency P CB antenna, a this dual-frequency P CB antenna and a feeder line electrically connect, it comprises substrate, the positive and negative of described substrate has radiating surface and ground plane with the Copper Foil sputter, be provided with via on described radiating surface and the ground plane, described radiating surface comprises microstrip transmission line, it is characterized in that: the both sides of described microstrip transmission line are respectively arranged with first oscillator and second oscillator, and are provided with building-out capacitor in the zone that described radiating surface is not provided with Copper Foil.
2. dual-frequency P CB antenna according to claim 1 is characterized in that: described microstrip transmission line is " N " type structure.
3. dual-frequency P CB antenna according to claim 1 is characterized in that: first oscillator and the second oscillator junction are provided with a feedback point on the described microstrip transmission line.
4. according to claim 1,2 or 3 described dual-frequency P CB antennas, it is characterized in that: described second oscillator be shorter in length than first oscillator, and the length of described first oscillator and second oscillator 1/4 wavelength of corresponding operating frequency respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910211195 CN102055076A (en) | 2009-11-09 | 2009-11-09 | Dual-frequency PCB antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910211195 CN102055076A (en) | 2009-11-09 | 2009-11-09 | Dual-frequency PCB antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102055076A true CN102055076A (en) | 2011-05-11 |
Family
ID=43959177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910211195 Pending CN102055076A (en) | 2009-11-09 | 2009-11-09 | Dual-frequency PCB antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102055076A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102738569A (en) * | 2012-03-31 | 2012-10-17 | 苏州市吴通天线有限公司 | Broadband PCB (Printed Circuit Board) antenna |
| CN103688409A (en) * | 2011-07-20 | 2014-03-26 | 株式会社藤仓 | Antenna and wireless tag |
| WO2020155986A1 (en) * | 2019-01-28 | 2020-08-06 | 杭州海康威视数字技术股份有限公司 | Dual-frequency antenna |
-
2009
- 2009-11-09 CN CN 200910211195 patent/CN102055076A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103688409A (en) * | 2011-07-20 | 2014-03-26 | 株式会社藤仓 | Antenna and wireless tag |
| US9159019B2 (en) | 2011-07-20 | 2015-10-13 | Fujikura Ltd. | Antenna and wireless tag |
| CN103688409B (en) * | 2011-07-20 | 2015-12-23 | 株式会社藤仓 | Antenna and wireless identification tag |
| CN102738569A (en) * | 2012-03-31 | 2012-10-17 | 苏州市吴通天线有限公司 | Broadband PCB (Printed Circuit Board) antenna |
| WO2020155986A1 (en) * | 2019-01-28 | 2020-08-06 | 杭州海康威视数字技术股份有限公司 | Dual-frequency antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110511 |