CN102881996A - Printed antenna - Google Patents
Printed antenna Download PDFInfo
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- CN102881996A CN102881996A CN2011101926441A CN201110192644A CN102881996A CN 102881996 A CN102881996 A CN 102881996A CN 2011101926441 A CN2011101926441 A CN 2011101926441A CN 201110192644 A CN201110192644 A CN 201110192644A CN 102881996 A CN102881996 A CN 102881996A
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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 that is applied to radio network device.
Background technology
Along with the progress of computer and wireless communication technology, radio area network (Wireless Area Network, WLAN) little by little is widely used in the daily life.Many electronic installations can both be connected to WLAN by radio network device at present.Radio network device for example is universal serial bus wireless network interface card (USB dongle), radio base station (Access Point, AP) or router (Router)
The conventional wireless network device can come the transmitting/receiving wireless signal by external dipole (dipole) antenna.The overall aesthetic of moulding and the extra acquisition cost of needs because external dipole antenna can disfeature, the printed antenna that therefore is formed on the printed circuit board (PCB) has just replaced dipole antenna gradually.
Yet 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 is restricted within narrow limits more.
Summary of the invention
The present invention relates to a kind of printed antenna, it is by the design of suitable circuit layout, can not only reduce printed antenna shared area on substrate, more can improve radiation gain and radiation efficiency.In addition, more can increase the frequency range of printed antenna.
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 section, 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.The first ground plane, low frequency radiation section, high-frequency radiation part and the first matching part are positioned at upper surface.The first ground plane has the first ground connection side.Low frequency radiation section comprises the first banded Department of Radiation, the second banded Department of Radiation and the 3rd banded Department of Radiation.One end of the second banded Department of Radiation is connected to an end of the first banded Department of Radiation to form the first bending.One end of the 3rd banded Department of Radiation is connected to the other end of the second banded Department of Radiation to form the second bending.The 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 the opening, and high-frequency radiation part comprises the first high frequency side and the second high frequency side.The first high frequency side is relative with the first bending, and an end of the first high frequency side is connected to the other end of the 3rd banded Department of Radiation.The second high frequency side is parallel to the first banded Department of Radiation, and an end of the second high frequency side is connected to the other end of the first high frequency side to form acute angle.The first matching part is positioned on the vertical join line of the summit of acute angle and the first ground connection side, and extend to the first banded Department of Radiation from the first ground connection side the first matching part.The 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 cooperation accompanying drawing are described in detail below:
Description of drawings
Fig. 1 illustrates and is the part vertical view according to the printed antenna of first embodiment of the invention.
Fig. 2 illustrates and is the part upward view according to the printed antenna of first embodiment of the invention.
Fig. 3 illustrates and is the oscillogram according to the standing-wave ratio of the printed antenna of first embodiment of the invention.
Fig. 4 illustrates as measuring comparison schematic diagram under the plane according to the radiation gain of the printed antenna of first embodiment of the invention 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.
Fig. 6 illustrates and is the part vertical view according to the printed antenna of second embodiment of the invention.
Fig. 7 illustrates and is the part vertical view according to the printed antenna of third embodiment of the invention.
Fig. 8 illustrates and is the part vertical view according to the printed antenna of fourth embodiment of the invention.
Fig. 9 illustrates and is the part vertical view according to the printed antenna of fifth embodiment of the invention.
Figure 10 illustrates and is the part vertical view according to the printed antenna of sixth embodiment of the invention.
Description of reference numerals
1,2,3,4,5,6: printed antenna 11: substrate
14,24,34,44: 15: the first matching parts of high-frequency radiation part
The matching part 17 in 16: the second: vertical join line
19: the three matching parts of 18: the second ground planes
111: upper surface 112: lower surface
131: the first banded Departments of Radiation of 121: the first ground connection sides
133: the three banded Departments of Radiation of 132: the second banded Departments of Radiation
Bending in 134: the first bending in 135: the second
142: the second high frequency sides of 141: the first high frequency sides
143: third high is 144: the four high frequency sides of side frequently
145: 181: the second ground connection sides of acute angle
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 section, 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.The first ground plane, low frequency radiation section, high-frequency radiation part and the first matching part are positioned at upper surface.The first ground plane has the first ground connection side.Low frequency radiation section comprises the first banded Department of Radiation, the second banded Department of Radiation and the 3rd banded Department of Radiation.One end of the second banded Department of Radiation is connected to an end of the first banded Department of Radiation to form the first bending.One end of the 3rd banded Department of Radiation is connected to the other end of the second banded Department of Radiation to form the second bending.The 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 the opening, and high-frequency radiation part comprises the first high frequency side and the second high frequency side.The first high frequency side is relative with the first bending, and an end of the first high frequency side is connected to the other end of the 3rd banded Department of Radiation.The second high frequency side is parallel to the first banded Department of Radiation, and an end of the second high frequency side is connected to the other end of the first high frequency side to form acute angle.The first matching part is positioned on the vertical join line of the summit of acute angle and the first ground connection side, and extend to the first banded Department of Radiation from the first ground connection side the first matching part.The second matching part is adjacent with the first matching part, and not overlapping up and down.
The first embodiment
Please be simultaneously with reference to Fig. 1 and Fig. 2, Fig. 1 illustrates and is that the part vertical view according to the printed antenna of first embodiment of the invention, Fig. 2 illustrate and is the part upward view according to the printed antenna of first embodiment of the invention.Printed antenna 1 for example is applied to radio network device, and radio network device for example is 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 places the x-y plane, and the z direction indication vertically penetrates the direction on x-y plane.Printed antenna 1 comprises substrate 11, the first ground plane 12, low frequency radiation section 13, high-frequency radiation part 14, the first matching part 15, the second matching part 16 and the second ground plane 18, and printed antenna 1 can be distributed in the rectangular area of 18mm * 11mm effectively to reduce its shared area.Substrate 11 comprises upper surface 111 and the lower surface 112 relative with upper surface 111.The first ground plane 12, low frequency radiation section 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.The first ground plane 12 and the second ground plane 18 have respectively adjacent to the first ground connection side 121 of low frequency radiation section 13 and high-frequency radiation part 14 and the second ground connection side 181.Low frequency radiation section 13 and high-frequency radiation part 14 operate in respectively 2.4GHz and 5GHz.
Low frequency radiation section 13 comprises the first banded Department of Radiation 131, the second banded Department of Radiation 132 and the 3rd banded Department of Radiation 133.One end of the second banded Department of Radiation 132 is connected to an end of the first banded Department of Radiation 131, to form the first bending 134.One end of the 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 131, the second banded Department of Radiation 132 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 first banded Department of Radiation 131, the second banded Department of Radiation 132 and the 3rd banded Department of Radiation 133 formed openings, and high-frequency radiation part 14 comprises the first high frequency side 141, the second high frequency side 142, third high frequently side 143 and the 4th high frequency side 144.The second high frequency side 142 connects frequently side 143 of the first high frequency sides 141 and third high, and the 4th high frequency side 144 connect the first high frequency sides 141 and third high frequently side 143 to form quadrangle.The first high frequency side 141 and the 4th high frequency side 144 are relative with the first bending the 134 and second bending 135 respectively, and an end of the first high frequency side 141 is connected to the other end of the 3rd banded Department of Radiation 133.The second high frequency side 142 is parallel to the first banded Department of Radiation 131, and the third high frequency side 143 vertical second high frequency sides 142 that connect.One end of the second high frequency side 142 is connected to the other end of the first high frequency side 141 to form acute angle 145.
The first matching part 15 is positioned on the vertical join line 17 of the summit of acute angle 145 and the first ground connection side 121.The first ground connection side 121 extends 131 to the first banded Department of Radiation, and extend to the first banded Department of Radiation 131 from the second ground connection side 181 the second matching part 16.The second matching part 16 and the first matching part 15 are symmetrical and adjacent, and the second matching part 16 and the first matching part 15 left-right symmetric and not overlapping up and down.In addition, the second matching part 16 is identical with size and the shape of the first matching part 15.
Furthermore, the distance L 1 between the first matching part 15 and the first high frequency side 141 is 1mm, and the distance L 2 between third high frequency side 143 and the second banded Department of Radiation 132 is 1.5～2mm.Distance L 3 between the 3rd banded Department of Radiation 133 and the first ground connection side 121 is 1mm, and the distance L 4 between the first high frequency side 141 and the first banded Department of Radiation 131 is 3.5～4mm.
Please be simultaneously with reference to Fig. 3, Fig. 4 and Fig. 5, Fig. 3 illustrates and is the oscillogram according to the standing-wave ratio of the printed antenna of first embodiment of the invention, Fig. 4 illustrates as measuring comparison schematic diagram under the plane according to the radiation gain of the printed antenna of first embodiment of the invention in difference, and 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.The traditional printing antenna operation is when low frequency, and its frequency range is restricted within narrow limits more.The phase strange land can be found out at Fig. 3, and aforementioned printed antenna 1 can obtain larger frequency range in the low frequency operation, such as 1.7GHz～2.5GHz.Moreover, the frequency range size of printed antenna 1 can also be adjusted through the distance L 1 of the first matching part 15 and the first high frequency side 141.
In addition, can find out also that at Fig. 4 aforementioned printed antenna 1 has more preferred radiation gain.For instance, when aforementioned printed antenna 1 operated in 2.4GHz, 2.45GHz and 2.5GHz, the peak gain on the x-y plane was respectively 3.49dBi, 3.85dBi and 3.43dBi.The radiation gain of obvious printed antenna 1 is significantly promoted.Moreover, can find out more that by Fig. 5 the radiation efficiency of aforementioned printed antenna 1 is better than conventional dipole antenna.The radiation efficiency of curve 510 expression printed antennas 1 under different frequency, and the radiation efficiency of curve 520 expression conventional dipole antenna under different frequency.When aforementioned printed antenna 1 operated in 2.4GHz, 2.45GHz and 2.5GHz, radiation efficiency more can reach respectively 95.83%, 94.52% and 97.2%.When operating in 2.4GHz, 2.45GHz and 2.5GHz compared to conventional dipole antenna, its radiation efficiency only can reach respectively 84.74%, 88.06% and 92.30%.No matter aforementioned printed antenna 1 operates in 2.4GHz, 2.45GHz or 2.5GHz, its radiation efficiency all is better than conventional dipole antenna.
The second embodiment
Please refer to Fig. 6, Fig. 6 illustrates and is the part vertical view according to the printed antenna of second embodiment of the invention.The second embodiment and the first embodiment difference are: printed antenna 2 also comprise 19, the three matching parts 19, the 3rd matching part in upper surface 12 and the second matching part 16 between the first matching part 15 and the 3rd matching part 19.
The 3rd embodiment
Please refer to Fig. 7, Fig. 7 illustrates and is the part vertical view according to the printed antenna of third embodiment of the invention.The 3rd embodiment and the first embodiment difference are: the second matching part 16 of printed antenna 3 is formed at upper surface 12, and extend to the first banded Department of Radiation 131 from the first ground connection side 121 the second matching part 16.
The 4th embodiment
Please refer to Fig. 8, Fig. 8 illustrates and is the part vertical view according to the printed antenna of fourth embodiment of the invention.The 4th embodiment and the first embodiment difference are: the high-frequency radiation part 24 of printed antenna 4 only comprises frequently side 143 of the first high frequency side 141, the second high frequency side 142 and third high.Third high frequency side 143 connection the first high frequency sides 141 and the second high frequency side 142 are to form right-angled triangle.
The 5th embodiment
Please refer to Fig. 9, Fig. 9 illustrates and is the part vertical view according to the printed antenna of fifth embodiment of the invention.The 5th embodiment and the first embodiment difference are: the high-frequency radiation part 34 of printed antenna 5 only comprises frequently side 143 of the first high frequency side 141, the second high frequency side 142 and third high.Third high frequently side 143 connects the first high frequency sides 141 and the second high frequency side 142 forming triangle, and third high side 143 is not parallel with the second banded Department of Radiation 132 frequently.
The 6th embodiment
Please refer to Figure 10, Figure 10 illustrates and is the part vertical view according to the printed antenna of sixth embodiment of the invention.The 6th embodiment is with the first embodiment difference: the third high of the high-frequency radiation part 44 of printed antenna 6 frequently side 143 is not parallel with the second banded Department of Radiation 132, and relative with the first bending 134.
The printed antenna that the above embodiment of the present invention is disclosed has multiple advantages, below only enumerates the part advantage and is described as follows:
One, reduces printed antenna shared area on substrate.
Two, improve radiation gain.
Three, improve radiation efficiency.
Four, capable of increasing bandwidth.
In sum, although the present invention discloses as above with preferred embodiment, so it is not to limit the present invention.The 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 defines and is as the criterion when looking claim.
Claims (13)
1. printed antenna comprises:
Substrate comprises:
Upper surface; And
Lower surface is relative with this upper surface;
The first ground plane is positioned at this upper surface and has the first ground connection side;
Low frequency radiation section is positioned at this upper surface, and this low frequency radiation section comprises:
The first banded Department of Radiation;
The second banded Department of Radiation, an end of this second banded Department of Radiation is connected to an end of this first banded Department of Radiation, to form the first bending; And
The 3rd banded Department of Radiation, an 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 is positioned at this upper surface and is arranged at this opening, and this high-frequency radiation part comprises:
The first high frequency side, relative with this first bending, and an end of this first high frequency side is connected to the other end of the 3rd banded Department of Radiation; And
The second high frequency side is parallel to this first banded Department of Radiation, and an end of this second high frequency side is connected to the other end of this first high frequency side to form acute angle; And
The first matching part, be positioned at this upper surface and be positioned at the summit of this acute angle and the vertical join line of this first ground connection side on, extend to this first banded Department of Radiation from this first ground connection side this first matching part; And
The 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 extend to this first banded Department of Radiation from this second ground connection side this second matching part.
3. printed antenna as claimed in claim 2 also comprises the 3rd matching part, the 3rd matching part in 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 extend to this first banded Department of Radiation from this first ground connection side this second matching part.
5. printed antenna as claimed in claim 1, wherein this second matching part is identical with size and the shape of this first matching part.
6. printed antenna as claimed in claim 1, wherein the distance 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 frequently side of third high, this third high is side and this vertical connection of the second high frequency side frequently, 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, with this first high frequency side and this third high frequently side be connected.
9. printed antenna as claimed in claim 1, wherein this high-frequency radiation part also comprises frequently side of third high, 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 frequently side and the 4th high frequency side, this third high frequently side connects this second high frequency side and the 4th high frequency side, and this third high side and the 4th high frequency side are relative with this first bending and this second bending respectively frequently.
11. printed antenna 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 antenna as claimed in claim 1, wherein the distance between this first high frequency side and this first banded Department of Radiation is 3.5～4mm.
13. printed antenna as claimed in claim 1, wherein this second matching part and this first matching part left-right symmetric.
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 true CN102881996A (en) | 2013-01-16 |
| CN102881996B 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) |
Cited By (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 |
Citations (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 |
| CN101443957A (en) * | 2006-03-28 | 2009-05-27 | 高通股份有限公司 | Modified inverted-F antenna for wireless communication |
| CN101465470A (en) * | 2007-12-21 | 2009-06-24 | 启碁科技股份有限公司 | Antenna structure and relevant wireless communication device |
| CN101562276A (en) * | 2008-04-14 | 2009-10-21 | 鸿富锦精密工业（深圳）有限公司 | Dual band antenna and communicator |
-
2011
- 2011-07-11 CN CN201110192644.1A patent/CN102881996B/en not_active Expired - Fee Related
Patent Citations (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 |
| CN101443957A (en) * | 2006-03-28 | 2009-05-27 | 高通股份有限公司 | Modified inverted-F antenna for wireless communication |
| CN101465470A (en) * | 2007-12-21 | 2009-06-24 | 启碁科技股份有限公司 | Antenna structure and relevant wireless communication device |
| CN101562276A (en) * | 2008-04-14 | 2009-10-21 | 鸿富锦精密工业（深圳）有限公司 | Dual band antenna and communicator |
Cited By (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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102881996B (en) | 2014-12-17 |
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Granted publication date: 20141217 Termination date: 20170711 |