CN102881996B - Printed antenna - Google Patents
Printed antenna Download PDFInfo
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- CN102881996B CN102881996B CN201110192644.1A CN201110192644A CN102881996B CN 102881996 B CN102881996 B CN 102881996B CN 201110192644 A CN201110192644 A CN 201110192644A CN 102881996 B CN102881996 B CN 102881996B
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- radiation
- banded
- department
- matching part
- high frequency
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Abstract
The invention discloses a printed antenna which comprises a substrate, a first ground plane, a low-frequency radiation part, a high-frequency radiation part, a first matching part and a second matching part. The first ground plane, the low-frequency radiation part, the high-frequency radiation part and the first matching part are positioned on the upper surface of the substrate. The low-frequency radiation part is connected with the high-frequency radiation part, and the first matching part extends to the high-frequency radiation part from the first ground plane. The second matching part is adjacent to the first matching part and is not overlapped with the first matching part vertically.
Description
Technical field
The present invention relates to a kind of printed antenna, and particularly relate to a kind of printed antenna being applied to radio network device.
Background technology
Along with the progress of computer and wireless communication technology, radio area network (Wireless Area Network, WLAN) is little by little widely used in daily life.Electronic installations many at present can be connected to WLAN by radio network device.Radio network device is such as universal serial bus wireless network interface card (USB dongle), radio base station (Access Point, AP) or router (Router)
Conventional wireless network device carrys out transmitting/receiving wireless signal by external dipole (dipole) antenna.Due to external dipole antenna can disfeature moulding overall aesthetic and need extra acquisition cost, the printed antenna be therefore formed on printed circuit board (PCB) just instead of dipole antenna gradually.
But the radiation gain of traditional printing antenna and radiation efficiency are far away from dipole antenna.In addition, the frequency range of traditional printing antenna also more is restricted within narrow limits.
Summary of the invention
The present invention relates to a kind of printed antenna, it can not only be reduced the area that printed antenna is shared on substrate by suitable circuit layout design, more can be improved radiation gain and radiation efficiency.In addition, the frequency range of printed antenna can more be increased.
According to an aspect of the present invention, a kind of printed antenna is proposed.Printed antenna comprises substrate, the first ground plane, low frequency radiation portion, high-frequency radiation part, the first matching part and the second matching part.Substrate comprises upper surface and the lower surface relative with upper surface.First ground plane, low frequency radiation portion, high-frequency radiation part and the first matching part are positioned at upper surface.First ground plane has the first ground connection side.Low frequency radiation portion comprises the first banded Department of Radiation, the second banded Department of Radiation and the 3rd banded Department of Radiation.One end of second banded Department of Radiation is connected to one end of the first banded Department of Radiation to form the first bending.One end of 3rd banded Department of Radiation is connected to the other end of the second banded Department of Radiation to form the second bending.First banded Department of Radiation, the second banded Department of Radiation and the 3rd banded Department of Radiation form opening.
High-frequency radiation part is arranged in opening, and high-frequency radiation part comprises the first high frequency side and the second high frequency side.First high frequency side and first bends relative, and one end of the first high frequency side is connected to the other end of the 3rd banded Department of Radiation.Second high frequency side is parallel to the first banded Department of Radiation, and one end of the second high frequency side is connected to the other end of the first high frequency side to form acute angle.First matching part is positioned in the summit of acute angle and the vertical join line of the first ground connection side, and the first matching part extends to the first banded Department of Radiation from the first ground connection side.Second matching part is adjacent with the first matching part, and not overlapping up and down.
For foregoing of the present invention can be become apparent, preferred embodiment cited below particularly, and coordinate accompanying drawing, be described in detail below:
Accompanying drawing explanation
Fig. 1 illustrates the top partial view diagram into the printed antenna according to first embodiment of the invention.
Fig. 2 illustrates the partial bottom view into the printed antenna according to first embodiment of the invention.
Fig. 3 illustrates the oscillogram of the standing-wave ratio into the printed antenna according to first embodiment of the invention.
Fig. 4 illustrates the comparison schematic diagram of radiation gain under difference measurement plane into the printed antenna according to first embodiment of the invention.
Fig. 5 illustrates as according to the printed antenna of first embodiment of the invention and the radiation efficiency measurement figure of conventional dipole antenna.
Fig. 6 illustrates the top partial view diagram into the printed antenna according to second embodiment of the invention.
Fig. 7 illustrates the top partial view diagram into the printed antenna according to third embodiment of the invention.
Fig. 8 illustrates the top partial view diagram into the printed antenna according to fourth embodiment of the invention.
Fig. 9 illustrates the top partial view diagram into the printed antenna according to fifth embodiment of the invention.
Figure 10 illustrates the top partial view diagram into the printed antenna according to sixth embodiment of the invention.
Description of reference numerals
1,2,3,4,5,6: printed antenna 11: substrate
12: the first ground planes 13: low frequency radiation portion
14,24,34,44: high-frequency radiation part 15: the first matching part
16: the second matching parts 17: vertical join line
18: the second ground plane 19: the three matching parts
111: upper surface 112: lower surface
The banded Department of Radiation of 121: the first ground connection side 131: the first
The banded Department of Radiation of 132: the second banded Department of Radiation 133: the three
134: the first bending 135: the second bendings
141: the first high frequency side 142: the second high frequency sides
143: third high is side 144: the four high frequency side frequently
145: acute angle 181: the second ground connection side
510,520: curve L1, L2, L3, L4: distance
Embodiment
In order to improve radiation gain and radiation efficiency, following embodiment provides the design of multiple printed antenna.Printed antenna comprises substrate, the first ground plane, low frequency radiation portion, high-frequency radiation part, the first matching part and the second matching part.Substrate comprises upper surface and the lower surface relative with upper surface.First ground plane, low frequency radiation portion, high-frequency radiation part and the first matching part are positioned at upper surface.First ground plane has the first ground connection side.Low frequency radiation portion comprises the first banded Department of Radiation, the second banded Department of Radiation and the 3rd banded Department of Radiation.One end of second banded Department of Radiation is connected to one end of the first banded Department of Radiation to form the first bending.One end of 3rd banded Department of Radiation is connected to the other end of the second banded Department of Radiation to form the second bending.First banded Department of Radiation, the second banded Department of Radiation and the 3rd banded Department of Radiation form opening.
High-frequency radiation part is arranged in opening, and high-frequency radiation part comprises the first high frequency side and the second high frequency side.First high frequency side and first bends relative, and one end of the first high frequency side is connected to the other end of the 3rd banded Department of Radiation.Second high frequency side is parallel to the first banded Department of Radiation, and one end of the second high frequency side is connected to the other end of the first high frequency side to form acute angle.First matching part is positioned in the summit of acute angle and the vertical join line of the first ground connection side, and the first matching part extends to the first banded Department of Radiation from the first ground connection side.Second matching part is adjacent with the first matching part, and not overlapping up and down.
First embodiment
Illustrate the top partial view diagram into the printed antenna according to first embodiment of the invention referring to Fig. 1 and Fig. 2, Fig. 1, Fig. 2 illustrates the partial bottom view into the printed antenna according to first embodiment of the invention.Printed antenna 1 is such as applied to radio network device, and radio network device is such as universal serial bus wireless network interface card (USB dongle), radio base station (Access Point, AP) or router (Router).The printed antenna 1 that Fig. 1 illustrates keeps flat and is placed in x-y plane, and z direction represents the direction of vertical injection x-y plane.Printed antenna 1 comprises substrate 11, first ground plane 12, low frequency radiation portion 13, matching part, high-frequency radiation part 14, first matching part 15, second 16 and the second ground plane 18, and printed antenna 1 can be distributed in 18mm × 11mm rectangular area in effectively to reduce the area shared by it.Substrate 11 comprises upper surface 111 and the lower surface 112 relative with upper surface 111.First ground plane 12, low frequency radiation portion 13, high-frequency radiation part 14 and the first matching part 15 are positioned at upper surface 111, and the second matching part 16 and the second ground plane 18 are positioned at lower surface 112.First ground plane 12 and the second ground plane 18 have the first ground connection side 121 and the second ground connection side 181 adjacent to low frequency radiation portion 13 and high-frequency radiation part 14 respectively.Low frequency radiation portion 13 and high-frequency radiation part 14 operate in 2.4GHz and 5GHz respectively.
Low frequency radiation portion 13 comprises the first banded Department of Radiation 132 of banded Department of Radiation 131, second and the 3rd banded Department of Radiation 133.One end of second banded Department of Radiation 132 is connected to one end of the first banded Department of Radiation 131, to form the first bending 134.One end of 3rd banded Department of Radiation 133 is connected to the other end of the second banded Department of Radiation 132, to form the second bending 135.The first banded Department of Radiation 132 of banded Department of Radiation 131, second and the 3rd banded Department of Radiation 133 form opening with accommodating high-frequency radiation part 14.
High-frequency radiation part 14 is arranged in the opening that the first banded Department of Radiation 132 of banded Department of Radiation 131, second and the 3rd banded Department of Radiation 133 formed, and high-frequency radiation part 14 comprises the first high frequency side 141, second high frequency side 142, third high side 143 and the 4th high frequency side 144 frequently.Second high frequency side 142 connects the first high frequency side 141 and third high side 143 frequently, and the 4th high frequency side 144 connect the first high frequency side 141 and third high frequently side 143 to form quadrangle.First high frequency side 141 and the 4th high frequency side 144 bend 134 and second respectively and bend 135 relative with first, and one end of the first high frequency side 141 is connected to the other end of the 3rd banded Department of Radiation 133.Second high frequency side 142 is parallel to the first banded Department of Radiation 131, and third high side 143 vertically connection the second high frequency side 142 frequently.One end of second high frequency side 142 is connected to the other end of the first high frequency side 141 to form acute angle 145.
First matching part 15 is positioned in the summit of acute angle 145 and the vertical join line 17 of the first ground connection side 121.First ground connection side 121 extends 131 to the first banded Department of Radiation, and the second matching part 16 extends to the first banded Department of Radiation 131 from the second ground connection side 181.Second matching part 16 and the first matching part 15 are symmetrical and adjacent, and the second matching part 16 is symmetrical with the first matching part 15 and upper and lower not overlapping.In addition, the size of the second matching part 16 and the first matching part 15 and shape identical.
Furthermore, the distance L1 between the first matching part 15 and the first high frequency side 141 is 1mm, and the distance L2 of third high frequently between side 143 and the second banded Department of Radiation 132 is 1.5 ~ 2mm.Distance L3 between 3rd banded Department of Radiation 133 and the first ground connection side 121 is 1mm, and the distance L4 between the first high frequency side 141 and the first banded Department of Radiation 131 is 3.5 ~ 4mm.
Referring to Fig. 3, Fig. 4 and Fig. 5, Fig. 3 illustrates the oscillogram of the standing-wave ratio into the printed antenna according to first embodiment of the invention, Fig. 4 radiation gain illustrated as the printed antenna according to first embodiment of the invention measures the comparison schematic diagram under plane in difference, Fig. 5 illustrates as according to the printed antenna of first embodiment of the invention and the radiation efficiency measurement figure of conventional dipole antenna.Traditional printing antenna operation is when low frequency, and its frequency range is restricted within narrow limits more.Differently, can find out at Fig. 3, aforementioned printed antenna 1 can obtain larger frequency range, as 1.7GHz ~ 2.5GHz at low frequency operation.Moreover, the frequency range size of printed antenna 1 can also adjust through the distance L1 of the first matching part 15 and the first high frequency side 141.
In addition, also can find out that aforementioned printed antenna 1 has more preferred radiation gain at Fig. 4.For example, when aforementioned printed antenna 1 operates in 2.4GHz, 2.45GHz and 2.5GHz, the peak gain in x-y plane is respectively 3.49dBi, 3.85dBi and 3.43dBi.The radiation gain of obvious printed antenna 1 is significantly promoted.Moreover, more can find out that the radiation efficiency of aforementioned printed antenna 1 is better than conventional dipole antenna by Fig. 5.Curve 510 represents the radiation efficiency of printed antenna 1 under different frequency, and curve 520 represents the radiation efficiency of conventional dipole antenna under different frequency.When aforementioned printed antenna 1 operates in 2.4GHz, 2.45GHz and 2.5GHz, radiation efficiency more can reach 95.83%, 94.52% and 97.2% respectively.When operating in 2.4GHz, 2.45GHz and 2.5GHz compared to conventional dipole antenna, its radiation efficiency only can reach 84.74%, 88.06% and 92.30% respectively.No matter aforementioned printed antenna 1 operates in 2.4GHz, 2.45GHz or 2.5GHz, its radiation efficiency is all better than conventional dipole antenna.
Second embodiment
Please refer to Fig. 6, Fig. 6 illustrates the top partial view diagram into the printed antenna according to second embodiment of the invention.Second embodiment and the first embodiment difference are: printed antenna 2 also comprise the 3rd matching part 19, matching part the 19, three at upper surface 12 and the second matching part 16 between the first matching part 15 and the 3rd matching part 19.
3rd embodiment
Please refer to Fig. 7, Fig. 7 illustrates the top partial view diagram into the printed antenna according to third embodiment of the invention.3rd embodiment and the first embodiment difference are: the second matching part 16 of printed antenna 3 is formed at upper surface 12, and the second matching part 16 extends to the first banded Department of Radiation 131 from the first ground connection side 121.
4th embodiment
Please refer to Fig. 8, Fig. 8 illustrates the top partial view diagram into the printed antenna according to fourth embodiment of the invention.4th embodiment and the first embodiment difference are: the high-frequency radiation part 24 of printed antenna 4 only comprises the first high frequency side 141, second high frequency side 142 and third high side 143 frequently.Third high frequently side 143 connects the first high frequency side 141 and the second high frequency side 142 to form right-angled triangle.
5th embodiment
Please refer to Fig. 9, Fig. 9 illustrates the top partial view diagram into the printed antenna according to fifth embodiment of the invention.5th embodiment and the first embodiment difference are: the high-frequency radiation part 34 of printed antenna 5 only comprises the first high frequency side 141, second high frequency side 142 and third high side 143 frequently.Third high frequently side 143 connects the first high frequency side 141 and the second high frequency side 142 to form triangle, and not banded with second Department of Radiation 132 of third high frequency side 143 is parallel.
6th embodiment
Please refer to Figure 10, Figure 10 illustrates the top partial view diagram into the printed antenna according to sixth embodiment of the invention.6th embodiment is with the first embodiment difference: the third high of the high-frequency radiation part 44 of printed antenna 6 frequently not banded with second Department of Radiation 132 of side 143 is parallel, and with first bend 134 relative.
Printed antenna disclosed by the above embodiment of the present invention, has multiple advantages, only enumerates certain advantages below and is described as follows:
One, printed antenna area shared on substrate is reduced.
Two, radiation gain is improved.
Three, radiation efficiency is improved.
Four, capable of increasing bandwidth.
In sum, although the present invention with preferred embodiment disclose as above, so itself and be not used to limit the present invention.Persons of ordinary skill in the technical field of the present invention, without departing from the spirit and scope of the present invention, when being used for a variety of modifications and variations.Therefore, protection scope of the present invention is as the criterion when defining depending on claim.
Claims (13)
1. a printed antenna, comprising:
Substrate, comprising:
Upper surface; And
Lower surface is relative with this upper surface;
First ground plane, is positioned at this upper surface and has the first ground connection side;
Low frequency radiation portion, is positioned at this upper surface, and this low frequency radiation portion comprises:
First banded Department of Radiation;
Second banded Department of Radiation, one end of this second banded Department of Radiation is connected to one end of this first banded Department of Radiation, to form the first bending; And
3rd banded Department of Radiation, one end of the 3rd banded Department of Radiation is connected to the other end of this second banded Department of Radiation, and to form the second bending, this first banded Department of Radiation, this second banded Department of Radiation and the 3rd banded Department of Radiation form opening;
High-frequency radiation part, be positioned at this upper surface and be arranged at this opening, this high-frequency radiation part comprises:
First high frequency side, first bend relative with this, and one end of this first high frequency side is connected to the other end of the 3rd banded Department of Radiation; And
Second high frequency side, is parallel to this first banded Department of Radiation, and one end of this second high frequency side is connected to the other end of this first high frequency side to form acute angle; And
First matching part, is positioned at this upper surface and is positioned in the summit of this acute angle and the vertical join line of this first ground connection side, and this first matching part extends to this first banded Department of Radiation from this first ground connection side; And
Second matching part, adjacent with this first matching part, and not overlapping up and down.
2. printed antenna as claimed in claim 1, also comprise the second ground plane, this second ground plane comprises the second ground connection side, and this second ground plane and this second matching part are formed at this lower surface, and this second matching part extends to this first banded Department of Radiation from this second ground connection side.
3. printed antenna as claimed in claim 2, also comprises the 3rd matching part, the 3rd matching part at this upper surface and this second matching part between this first matching part and the 3rd matching part.
4. printed antenna as claimed in claim 1, wherein this second matching part is formed at this upper surface, and this second matching part extends to this first banded Department of Radiation from this first ground connection side.
5. printed antenna as claimed in claim 1, wherein the size of this second matching part and this first matching part and shape identical.
6. printed antenna as claimed in claim 1, the distance wherein between this first matching part and this first high frequency side is 1mm.
7. printed antenna as claimed in claim 1, wherein this high-frequency radiation part also comprises third high side frequently, this third high frequently side the second high frequency side is vertical is connected with this, and the distance between this third high frequency side and this second banded Department of Radiation is 1.5 ~ 2mm.
8. printed antenna as claimed in claim 7, wherein this high-frequency radiation part also comprises the 4th high frequency side, is connected with this first high frequency side and this third high frequency side.
9. printed antenna as claimed in claim 1, wherein this high-frequency radiation part also comprises third high side frequently, is connected with this first high frequency side and this second high frequency side.
10. printed antenna as claimed in claim 1, wherein this high-frequency radiation part also comprises third high side and the 4th high frequency side frequently, this third high frequently side connects this second high frequency side and the 4th high frequency side, and this third high frequently side and the 4th high frequency side respectively with this first bend and this second bend relative.
11. printed antennas as claimed in claim 1, wherein the distance of the 3rd banded Department of Radiation and this first ground connection side is 1mm.
12. printed antennas as claimed in claim 1, the distance wherein between this first high frequency side and this first banded Department of Radiation is 3.5 ~ 4mm.
13. printed antennas as claimed in claim 1, wherein this second matching part and this first matching part symmetrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110192644.1A CN102881996B (en) | 2011-07-11 | 2011-07-11 | Printed antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110192644.1A CN102881996B (en) | 2011-07-11 | 2011-07-11 | Printed antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102881996A CN102881996A (en) | 2013-01-16 |
| CN102881996B true CN102881996B (en) | 2014-12-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110192644.1A Expired - Fee Related CN102881996B (en) | 2011-07-11 | 2011-07-11 | Printed antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102881996B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103985962A (en) * | 2014-04-25 | 2014-08-13 | 小米科技有限责任公司 | Broadband antenna |
| CN109659681A (en) * | 2018-12-13 | 2019-04-19 | 厦门赢科光电有限公司 | A kind of antenna module and smart machine |
| CN114976565A (en) * | 2022-06-20 | 2022-08-30 | 无锡中微高科电子有限公司 | Annular-column micro-coaxial radio frequency transmission line and manufacturing method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM260888U (en) * | 2004-06-25 | 2005-04-01 | Hon Hai Prec Ind Co Ltd | Dual-band antenna |
| US7450072B2 (en) * | 2006-03-28 | 2008-11-11 | Qualcomm Incorporated | Modified inverted-F antenna for wireless communication |
| CN101465470B (en) * | 2007-12-21 | 2012-07-04 | 启碁科技股份有限公司 | Antenna structure and relevant wireless communication device |
| CN101562276B (en) * | 2008-04-14 | 2013-06-05 | 鸿富锦精密工业（深圳）有限公司 | Dual band antenna and communicator |
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2011
- 2011-07-11 CN CN201110192644.1A patent/CN102881996B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN102881996A (en) | 2013-01-16 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 Termination date: 20170711 |