CN100557883C - Antenna structure - Google Patents
Antenna structure Download PDFInfo
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- CN100557883C CN100557883C CNB2005101142104A CN200510114210A CN100557883C CN 100557883 C CN100557883 C CN 100557883C CN B2005101142104 A CNB2005101142104 A CN B2005101142104A CN 200510114210 A CN200510114210 A CN 200510114210A CN 100557883 C CN100557883 C CN 100557883C
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Abstract
The invention relates to a kind of antenna structure, it includes a radiant element, at least have two end points, one end points of radiant element is provided with an earth element, earth element is connected to a ground plane, and another end points of radiant element is provided with a feed-in element, the feed-in element is connected to a transmission line, the position at feed-in element place and the position at earth element place are diagonal, antenna of the present invention like this has bigger use frequency range, can improve serviceability, use antenna more easily for the user.
Description
Technical field:
The invention relates to a kind of antenna structure, be meant a kind of antenna especially with bigger use frequency range.
Background technology:
Press, the significantly lifting of Internet technology now, make no matter be aspect work or the life aspect, the common people all are provided considerable service, the initial stage Internet is wired networking, that is when using, must assemble network circuit, so quite inconvenience, especially must use under the situation at networking numerous people, for example must expend time in and manpower configuration network circuit in place such as office or school, and the network circuit that is disposed close and numerous just like as the cobweb especially, not only difficult arrangement is quite not attractive in appearance yet, along with the birth of Wi-Fi, improves the above-mentioned shortcoming in wired networking gradually.In the Wi-Fi technology, be to carry out the transmission of isdn data with wireless mode, if do not have antenna, the then device of Wi-Fi, for example radio access device (Access Point by antenna; AP) or the isdn user end, will launch or the reception data, therefore, the role of antenna is an indispensable ring in the Wi-Fi technology.
Commonly use inverted F shaped antenna and have characteristics such as volume is little, simple in structure, design is easy, therefore be widely used in recent years in various communication system and the product, and in the Wi-Fi technology, inverted F shaped antenna also is the element that often is employed.The use frequency range of inverted F shaped antenna, mainly be to design in response to the employed frequency range difference of various countries' Wi-Fi, for example: between 5.15 ten hundred million hertz (GHz) to 5.35 ten hundred million hertz (GHz), or only between 5.47 ten hundred million hertz (GHz) to 5.725 ten hundred million hertz (GHz), promptly use frequency range less.
But, for often going abroad and need using for the user of Wi-Fi, can be because the employed frequency range difference of various countries' Wi-Fi, meet the local antenna that uses frequency range and must change, just can use Wi-Fi in the place that provides Wi-Fi, as do not have to change the antenna that is fit to, will influence the use Wi-Fi, this has suitable inconvenience concerning the user who often goes abroad.If need designing, inverted F shaped antenna can cross over the frequency range that use in several zones, for example: between 5.15 ten hundred million hertz (GHz) to 5.825 ten hundred million hertz (GHz) even bigger frequency range, then because the structure of inverted F shaped antenna itself as increasing frequency range, can cause certain degree of difficulty in design.
Therefore the invention provides a kind of antenna structure, be particularly suitable for the application of wireless bridge as concealed (Embedded) antenna, it has bigger use frequency range, be enough to contain general Japan, Europe and U.S. FCC frequency spectrum, promptly between 4.9 ten hundred million hertz (GHz) to 5.85 ten hundred million hertz (GHz) even 5.9 ten hundred million hertz (GHz), with the usability of raising antenna, and then increase user's convenience, so can solve the above problems.
Summary of the invention:
Main purpose of the present invention is to provide a kind of antenna structure, and it can improve the use frequency range of antenna, to receive or to send signal, carries out the transmission of isdn data, improves the user in the convenience that uses antenna.
Another object of the present invention is to provide a kind of antenna structure, and it is when improving the use frequency range of antenna, can keep good gain simultaneously.
Another purpose of the present invention is to provide a kind of antenna structure, and it is because of simple in structure, and processing procedure is easy, so can reduce production costs.
Antenna structure of the present invention, it includes a radiant element, an earth element and a feed-in element, radiant element has two-end-point at least, one end points of radiant element is connected with an end of earth element, the other end of earth element and be connected to a ground plane, in the diagonal angle of earth element end, it is another end points of radiant element, it is connected with an end of feed-in element, and the other end of feed-in element is connected with a transmission line, and promptly the position at position in the morning, feed-in element place and earth element place is diagonal.
Description of drawings:
Fig. 1 is the stereogram of the embodiment of the invention;
Fig. 2 A is the front view of the embodiment of the invention;
Fig. 2 B is the end view of the embodiment of the invention;
Fig. 2 C is the upward view of the embodiment of the invention;
Fig. 3 A is the front view of another embodiment of the present invention;
Fig. 3 B is the end view of another embodiment of the present invention;
Fig. 3 C is the upward view of another embodiment of the present invention;
Fig. 4 A is the reflection loss figure of the embodiment of the invention;
Fig. 4 B is the voltage standing wave ratio figure of the embodiment of the invention;
Fig. 5 A is the E planar radiation field shape figure of the embodiment of the invention;
Fig. 5 B is the H planar radiation field shape figure of the embodiment of the invention.
The figure number explanation:
10 antennas, 12 radiant elements, 14 earth elements
16 feed-in elements, 17 feed-in elements, 18 coaxial cables
20 ground planes, 30 curves, 35 curves
Execution mode:
Now further understand and understanding for your juror is had architectural feature of the present invention and the effect reached, sincerely help with preferred embodiment and cooperate detailed explanation, illustrate as after:
See also Fig. 1, Fig. 2 A, Fig. 2 B and Fig. 2 C, it is stereogram, front view, end view and the upward view of the embodiment of the invention; As shown in the figure, antenna 10 of the present invention includes a radiant element 12, an earth element 14 and a feed-in element 16.Wherein radiant element 12 is as the body of antenna, be used for receiving or sending signal, radiant element 12 has two end points at least, one end of earth element 14 is arranged at an end points of radiant element 12, the other end of earth element 14 is to be connected with a ground plane 20, and an end of feed-in element 16 is arranged at another end points of radiant element 12, and the position at the position at feed-in element 16 places and earth element 14 places is diagonal.
Feed-in element 16 is cylindrical feed-in element, it also can be band shape feed-in element, one end of feed-in element 16 connects radiant element 12, the other end connects the transmission line or the various printed circuit board transmission line of a coaxial cable 18, to be used for the feed-in signal to radiant element 12, and by radiant element 12 emission transmission, perhaps be used to transmit signal that radiant element 12 received to processing unit (figure does not show), carry out subsequent treatment, between radiant element 12 and ground plane 20 is as medium with air, also can use a supplemental support element (figure does not show) with supplemental support radiant element 12, this supplemental support element is to be lower than 1.2 for a dielectric constant (Dielectric Constant), consume the factor (DissipationFactor) and be lower than 0.01 medium, for example: foam (foam).
By Fig. 2 A, B and C figure are as can be known, earth element 14 of the present invention is arranged at the better position of radiant element 12, it is an end points of radiant element 12, the i.e. end points that is connected with earth element 14, dividing the distance on one side of taking leave of radiant element 12 is C1 and D1, distance C 1 is half of length L 1 of earth element 14, and distance D 1 is half of width W 1 of earth element 14, the broadside that is the long limit of earth element 14 and radiant element 12 is tangent, and the long limit of the broadside of earth element 14 and this radiant element 12 is tangent, in addition as long as earth element 14 keeps the vertical angles position with feed-in element 16, the long limit of earth element 14 also can be tangent with the long limit of radiant element 12, and the broadside of earth element 14 also can be tangent with the broadside of this radiant element 12.Shown in Fig. 2 A, B and C figure, earth element 14 is to be connected with the lower surface of radiant element 12 with feed-in element 16, but according to design and the considering of materials used, earth element 14 also can be connected with the upper surface of radiant element 12 with feed-in element 16.
In addition, the length L of radiant element 12 of the present invention can be between 10 centimetres～15 centimetres, width W can be between 6 centimetres～8 centimetres, thickness T can be between 0.2 centimetre～0.43 centimetre, and the length L 1 of earth element 14 can be between 1 centimetre～3 centimetres, width W 1 can be between 0.2 centimetre～0.43 centimetre, height H 1 can be between 5 centimetres～7 centimetres, when if feed-in element 16 is cylindrical feed-in element, a metal column for example, its radius R can be between 0.3 centimetre～1 centimetre, and feed-in element 16 gets final product because of only being connected with radiant element 12, so the height H of feed-in element 16 is not particularly limited, can greater than or less than the height H 1 of earth element 14, also can make height H equal height H 1.
See also Fig. 3 A, B figure and C figure, it is front view, end view and the upward view of another embodiment of the present invention; As shown in the figure, the feed-in element 17 of this embodiment is different from the feed-in element 16 of the foregoing description, the feed-in element 17 of this embodiment is band shape feed-in element, a metal tape (Strip) for example, the one end connects the end points of radiant element 12, the other end connects little band (Micro-strip) transmission line, various printed circuit board transmission lines such as copline waveguide pipe (Co-planarWaveguide) transmission line or belt line (Strip-line) transmission line, feed-in element 17 uses the advantage of metal tape to mainly contain three: one, can be total to structure with earth element 14 and radiant element 12, convenient moulds is made, the material-saving saving of labor; Two, the convenient support that obtains based on the ground plane 20 of printed circuit board (PCB) avoids radiant element 12 to subside; Three, facility directly links to each other with the various transmission line of printed circuit board (PCB), avoids meaningless loss.
Feed-in element 17 is as being total to structure with earth element 14 and radiant element 12, then length L 2 can be between 1 centimetre～3 centimetres, width W 2 can be between 0.2 centimetre～0.43 centimetre, and the height H 2 of feed-in element 17 is not particularly limited, and radiant element 12 is connected with feed-in element 17 gets final product.And for example shown in the figure, when feed-in element 17 is metal tape, it is arranged at the better position of radiant element 12, be another end points of radiant element 12, i.e. the end points that is connected with feed-in element 17 of radiant element 12 divides that to take leave of radiant element 12 distance on one side be C2 and D2, and distance C 2 is half of the length L 2 of feed-in element 17, and distance D 2 is half of the width W 2 of feed-in element 17, and promptly the broadside of the long limit of feed-in element 17 and radiant element 12 is tangent, and the long limit of broadside and this radiant element 12 is tangent.
Again, as long as earth element 14 keeps the vertical angles position with feed-in element 17, the long limit of the feed-in element 17 of earth element 14 and metal tape also can be tangent with the long limit of radiant element 12, and the broadside of the feed-in element 17 of earth element 14 and metal tape also can be tangent with the broadside of this radiant element 12.
See also Fig. 4 A, it is the reflection loss figure of the embodiment of the invention; As shown in the figure, 2 points that curve 30 and longitudinal axis reflection loss (Return Loss) are handed over for the straight line of-10dB, the frequency of the transverse axis that it is corresponding is 4.9GHz and 5.85GHz respectively, therefore as can be known the use frequency range of antenna of the present invention promptly between 4.9GHz and 5.85GHz, be better than commonly using the use frequency range of antenna, so antenna of the present invention can be applicable to IEEE802.11a and the defined use frequency range of IEEE802.11j, can learn by the illustrated curve 30 and the frequency of pairing transverse axis that in addition the centre frequency of antenna of the present invention levels off to 5.4GHz.
See also Fig. 4 B, it is the voltage standing wave ratio figure of the embodiment of the invention; The use frequency range of antenna of the present invention can also be by Fig. 4 B voltage standing wave ratio (Voltage StandingWave Ratio, VSWR) figure learns, curve 35 and longitudinal axis voltage standing wave ratio (VSWR) are 2 points that 2 straight line is handed over, the frequency of the transverse axis that it is corresponding also is respectively 4.9GHz and 5.85GHz, and centre frequency equally also levels off to 5.4GHz.
See also Fig. 5 A and Fig. 5 B, it is the radiation field shape figure on radiation field shape figure and H plane on the E plane of the embodiment of the invention; As shown in the figure, antenna of the present invention is under the situation of 5.35GHz in frequency of utilization, average gain at E plane and H plane gained is respectively-2.8dBi and-4.01dBi, hence one can see that, the present invention still can keep certain average gain, so higher effective utilization is arranged after increasing the use frequency range, in addition as can be known by Fig. 5 A, least gain occurs in 171 degree, and its pairing yield value is-26.98dBi, and maximum gain occurs in 56 degree, its pairing yield value is 3.29dBi, and the H plane shown in Fig. 5 B, its minimum gain value is-15.21dBi, is to occur in 208 degree, and maximum gain is-1.53dBi, is to occur in 283 degree.
In sum, antenna structure of the present invention, it is that a end points in radiant element is provided with earth element, earth element is connected to ground plane, and the feed-in element is arranged at another end points of radiant element, and the feed-in element is connected with transmission line, the position at feed-in element place and the position at earth element place are the diagonal angle, antenna of the present invention like this has bigger use frequency range, and can improve the serviceability of antenna, increases the user in the convenience that uses antenna.
The above, it only is preferred embodiment of the present invention, be not to be used for limiting scope of the invention process, all according to the described shape of the present patent application claim, structure, feature and principle etc. change and modify, all should be contained in the claim of the present invention.
Claims (15)
1. an antenna structure is characterized in that, includes:
One radiant element has two end points at least;
One earth element, one end connect an end points of this radiant element, and the other end is connected to a ground plane;
One feed-in element, one end connect another end points of this radiant element, and the other end is connected to a transmission line, and this feed-in element is arranged in the position of radiant element and position that this earth element is arranged in radiant element is the diagonal angle;
This feed-in element is a band shape feed-in element, and the long limit of this band shape feed-in element and the broadside of this radiant element are tangent, and the broadside of this band shape feed-in element and the long limit of this radiant element are tangent.
2. antenna structure as claimed in claim 1 is characterized in that, this radiant element is square.
3. antenna structure as claimed in claim 2 is characterized in that, the length of this radiant element is between 10 centimetres～15 centimetres, and width is between 6 centimetres～8 centimetres, and thickness is between 0.2 centimetre～0.43 centimetre.
4. antenna structure as claimed in claim 1 is characterized in that, the length of this earth element is between 1 centimetre～3 centimetres, and width is between 0.2 centimetre～0.43 centimetre, and height is between 5 centimetres～7 centimetres.
5. antenna structure as claimed in claim 1 is characterized in that, this feed-in element is a cylindrical feed-in element.
6. antenna structure as claimed in claim 5 is characterized in that, the radius of this cylindrical feed-in element is between 0.3 centimetre～1 centimetre.
7. antenna structure as claimed in claim 5 is characterized in that, this cylindrical feed-in element is a metal column.
8. antenna structure as claimed in claim 1 is characterized in that, the length of this band shape feed-in element is between 1 centimetre～3 centimetres, and width is between 0.2 centimetre～0.43 centimetre.
9. antenna structure as claimed in claim 1 is characterized in that, this band shape feed-in element is a metal tape.
10. antenna structure as claimed in claim 1 is characterized in that, the long limit of this earth element and the broadside of this radiant element are tangent, and the long limit of the broadside of this earth element and this radiant element is tangent.
11. antenna structure as claimed in claim 1 is characterized in that, more comprises a supplemental support element, between this radiant element and this ground plane, with this radiant element of supplemental support.
12. antenna structure as claimed in claim 11 is characterized in that, this supplemental support element is that a dielectric constant is lower than 1.2, consumes the factor and is lower than 0.01 medium.
13. antenna structure as claimed in claim 12 is characterized in that, this supplemental support element is a foam.
14. antenna structure as claimed in claim 1 is characterized in that, this feed-in element links the transmission line of a coaxial cable.
15. antenna structure as claimed in claim 1 is characterized in that, this feed-in element links various printed circuit board transmission line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101142104A CN100557883C (en) | 2005-10-21 | 2005-10-21 | Antenna structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101142104A CN100557883C (en) | 2005-10-21 | 2005-10-21 | Antenna structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1758483A CN1758483A (en) | 2006-04-12 |
| CN100557883C true CN100557883C (en) | 2009-11-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101142104A Expired - Fee Related CN100557883C (en) | 2005-10-21 | 2005-10-21 | Antenna structure |
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| Country | Link |
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| CN (1) | CN100557883C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101286590B (en) * | 2008-05-16 | 2012-10-03 | 圆刚科技股份有限公司 | Build-in digital television antennae |
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2005
- 2005-10-21 CN CNB2005101142104A patent/CN100557883C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1758483A (en) | 2006-04-12 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20081219 Address after: Taipei City Neihu district in Taiwan for the way 77 Lane 16, 4 floor Applicant after: Aiconn Science & Technology Co., Ltd. Address before: Science Park, Taipei, Taiwan, Hsinchu, 1, three, new road, East, Hsinchu Applicant before: Accton Technology Corporation |
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Owner name: BAODING SCIENCE CO., LTD. Free format text: FORMER OWNER: ZHIBANG TECHNOLOGY CO., LTD. Effective date: 20081219 |
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Owner name: ACCTON WIRELESS BROADBAND CORP. Free format text: FORMER OWNER: AICONN TECHNOLOGY CORPORATION Effective date: 20110627 |
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Free format text: CORRECT: ADDRESS; FROM: 000000 BUILDING 4, NO. 16, LANE 77, XING'AI ROAD, NEIHU DISTRICT, TAIPEI CITY, TAIWAN, CHINA TO: 000000 NO. 1, YANXIN 3RD ROAD, SCIENCE AND INDUSTRIAL PARK, HSINCHU CITY, TAIWAN |
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Effective date of registration: 20110627 Address after: 000000, 1, No. three, Hsinchu Science Industrial Park, Taiwan, China Patentee after: Aiconn Science & Technology Co., Ltd. Address before: Taiwan Taipei City Neihu district 000000 China for love 77 Lane 16 4 floor Patentee before: Aiconn Science & Technology Co., Ltd. |
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Owner name: ZHIBANG SCIENCE AND TECHNOLOGY CO., LTD Free format text: FORMER OWNER: ACCTON WIRELESS BROADBAND CORP. Effective date: 20121105 |
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Effective date of registration: 20121105 Address after: Chinese Taiwan Hsinchu City Science Park research three road No. 1 Patentee after: Accton Technology Corporation Address before: Chinese Taiwan Hsinchu City Science Park research three road No. 1 Patentee before: Aiconn Science & Technology Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091104 Termination date: 20191021 |
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| CF01 | Termination of patent right due to non-payment of annual fee |