CN103633438B - Dual-band antenna - Google Patents
Dual-band antenna Download PDFInfo
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- CN103633438B CN103633438B CN201210298267.4A CN201210298267A CN103633438B CN 103633438 B CN103633438 B CN 103633438B CN 201210298267 A CN201210298267 A CN 201210298267A CN 103633438 B CN103633438 B CN 103633438B
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- antenna
- dual
- transmission line
- microstrip transmission
- department
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Abstract
The present invention relates to a kind of dual-band antenna, be arranged on substrate.It is two frequency ranges that dual-band antenna in the present invention simultaneously works in mid frequency, as 2.4GHz and two frequency ranges of 5.0GHz, and meets in dual-band antenna the insulated degree requirement between each antenna element.
Description
Technical field
The present invention relates to a kind of antenna, particularly relate to a kind of dual-band antenna.
Background technology
WLAN (WirelessLocalAreaNetwork, WLAN) device works in mid frequency is 2.4GHz and two frequency ranges of 5.0GHz, it is 2.4GHz and the signal of two frequency ranges of 5.0GHz for making Wireless LAN device can launch and receive mid frequency, and reach Multiinputoutput (MultiInputMultiOutput, MIMO) effect, many Wireless LAN devices are provided with multiple antenna element to form aerial array.Therefore, not only need to be designed to less by the volume of each antenna element, and need the interference between effective isolated antennas unit, just can meet Wireless LAN device and there is small size and there is the demand of excellent radiance.
Summary of the invention
In view of this, it is necessary to providing a kind of dual-band antenna, simultaneously working in mid frequency is two frequency ranges, as 2.4GHz and two frequency ranges of 5.0GHz, and the insulated degree requirement between each antenna element is met in dual-band antenna.
A kind of dual-band antenna, is arranged on substrate, and wherein this substrate includes first surface and the second surface being oppositely arranged, this dual-band antenna includes: symmetrical first antenna and the second antenna, may be contained within this first surface, wherein this first antenna includes: load point, for feed-in electromagnetic wave signal；And Department of Radiation, one end is connected with this load point, and wherein, this Department of Radiation includes that the microstrip transmission line of multiple L-shaped and head and the tail are vertically connected, with in meandering shape；The first symmetrical connecting portion and the second connecting portion, its two ends are connected with each other, may be contained within this first surface, for connecting the open end of the Department of Radiation of two antennas, and all include that the microstrip transmission line of multiple L-shaped and head and the tail are vertically connected, wherein, the width of the microstrip transmission line that every a junction includes is respectively less than the width of the microstrip transmission line that this Department of Radiation includes, and the half of the wavelength of this dual-band antenna radiated electromagnetic wave a length of of microstrip transmission line that first, second connecting portion includes；And grounding parts, it is arranged at this second surface.
Accompanying drawing explanation
Fig. 1 is the first surface schematic diagram of dual-band antenna in embodiment of the present invention.
Fig. 2 is the first surface scale diagrams of dual-band antenna in embodiment of the present invention.
Fig. 3 is the voltage standing wave ratio test figure of the first antenna of dual-band antenna in embodiment of the present invention.
Fig. 4 is the voltage standing wave ratio test figure of the second antenna of dual-band antenna in embodiment of the present invention.
Fig. 5 is the isolation degree test figure of dual-band antenna in embodiment of the present invention.
Main element symbol description
| Main antenna district | 1 |
| Bonding pad | 2 |
| Substrate | 10 |
| Dual-band antenna | 20 |
| First surface | 102 |
| First connecting portion | 2a |
| Second connecting portion | 2b |
| Open end | 3a |
| Open end | 3b |
| Strip | 4a |
| Strip | 4b |
| Billet | 5a |
| Billet | 5b |
| First antenna | 20a |
| Second antenna | 20b |
| Department of Radiation | 22a |
| Load point | 24a |
| Department of Radiation | 22b |
| Load point | 24b |
Following detailed description of the invention will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Detailed description of the invention
Fig. 1 is the first surface schematic diagram of dual-band antenna in embodiment of the present invention.In the present embodiment, dual-band antenna 20 is arranged on substrate 10.Substrate 10 is printed circuit board (PCB), and it includes first surface 102 and the second surface (not shown) being oppositely arranged with first surface 102.Dual-band antenna 20 includes main antenna district 1 and bonding pad 2, and dual-band antenna 20 is made up of FR4 type dielectric material.Main antenna district 1 includes first antenna 20a and the second antenna 20b arranged axisymmetricly.2, bonding pad first antenna 20a and the second antenna 20b are connected in series so that dual-band antenna 20 is integrally formed a circulation open circuit.
First antenna 20a includes Department of Radiation 22a, load point 24a and grounding parts.Second antenna 20b includes Department of Radiation 22b, load point 24b and grounding parts.Department of Radiation 22a (22b) is arranged at first surface 102, for transceiving electromagnetic ripple signal.Department of Radiation 22a (22b) one end is connected with load point 24a (24b), starts to extend the microstrip transmission line of multiple L-shaped from this end and head and the tail are vertically connected the other end, with in meandering shape.
In the present embodiment, Department of Radiation 22a (22b) includes the microstrip transmission line of 7 L-shaped, and the microstrip transmission line of each L-shaped width in horizontal, vertical direction is different.Open end 3a, 3b of first antenna 20a and the second antenna 20b are disposed adjacent.Load point 24a (24b) is arranged at first surface 102, is electrically connected at Department of Radiation 22a (22b) and the grounding parts of first and second antenna 20a (20b), for Department of Radiation 22a (22b) feed-in electromagnetic wave signal.The grounding parts of first antenna 20a and the second antenna 20b is arranged at second surface.
Bonding pad 2 includes that the first connecting portion 2a and the second connecting portion 2b arranged axisymmetricly, the first connecting portion 2a and the second connecting portion 2b two ends are connected with each other, and may be contained within first surface 102.In the present embodiment, the first connecting portion 2a and the second connecting portion 2b planform are identical, and the first connecting portion 2a is for connecting the open end 3a, the second connecting portion 2b of the Department of Radiation 22a of first antenna 20a for connecting the open end 3b of the Department of Radiation 22b of the second antenna 20b.
First and second connecting portion 2a (2b) all includes that the microstrip transmission line of multiple L-shaped and head and the tail are vertically connected, all with in roundabout shape.First and second connecting portion 2a (2b) microstrip transmission line all includes strip 4a (4b) and multiple billet 5a (5b), wherein, 1.5 times of a length of billet 5a (5b) length of strip 4a (4b).In the present embodiment, every a junction 2a (2b) all includes the microstrip transmission line of 3 L-shaped.The width of the width of the L-shaped microstrip transmission line of first and second connecting portion 2a (2b) the L-shaped microstrip transmission line less than Department of Radiation 22a (22b), and the half of the wavelength of a length of main antenna district 1 radiated electromagnetic wave of microstrip transmission line that bonding pad 2 includes so that dual-band antenna 20 has preferable isolation.Meanwhile, main antenna district 1 is 1:3 with the impedanoe ratio of the microstrip transmission line of bonding pad 2 so that dual-band antenna 20 has best isolation to show.In the present embodiment, the quantity of the L-shaped microstrip transmission line of each Department of Radiation 22a (22b) is all more than the quantity of L-shaped microstrip transmission line of every a junction 2a (2b).
Fig. 2 is the first surface scale diagrams of dual-band antenna in embodiment of the present invention.Size parts each with first antenna 20a equal sized due to the second each parts of antenna 20b.Therefore, succinct in order to describe, the size of each parts of first antenna 20a is the most only described.The total length d1 of Department of Radiation 22a is 8.5 centimetres, and overall width d2 is 8 centimetres, and the width of two the most adjacent microstrip transmission lines is different, and the microstrip transmission line of the most each L-shaped width in horizontal, vertical direction is different, respectively 0.8 and 0.5 centimetre.Load point 24a is rectangular, and its length d4 is 4.2 centimetres, and width d5 is 0.5 centimetre.
Size and the first each parts of connecting portion 2a equal sized due to the second each parts of connecting portion 2b.Therefore, succinct in order to describe, the size of the first each parts of connecting portion 2a is the most only described.Length d6 of the first long end of connecting portion 2a is 8.4 centimetres, and length d7 of short end is 5.6 centimetres, and width d8 is 0.1 centimetre.
Refer to Fig. 3, show voltage standing wave ratio (VoltageStandingWaveRatio, VSWR) the test figure of first antenna 20a of dual-band antenna 20 in Fig. 1.Transverse axis is the operating frequency of first antenna 20a, and the longitudinal axis is voltage standing wave(VSW) ratio.When first antenna 20a in present embodiment works in 2.2-2.7GHz and 4.7-6.0GHz frequency range as can be seen from Figure 5, its VSWR is less than 2, meets the application demand of dual-band antenna 20.
Refer to Fig. 4, show voltage standing wave ratio (VoltageStandingWaveRatio, VSWR) the test figure of the second antenna 20b of dual-band antenna 20 in Fig. 1.Transverse axis is the operating frequency of the second antenna 20b, and the longitudinal axis is voltage standing wave(VSW) ratio.When the second antenna 20b in present embodiment works in 2.2-2.7GHz and 4.7-6.0GHz frequency range as can be seen from Figure 6, its VSWR is less than 2, meets the application demand of dual-band antenna 20.
Refer to Fig. 5, show first antenna 20a and the isolation degree test figure of the second antenna 20b of dual-band antenna 20 in the present invention.Transverse axis is the operating frequency of dual-band antenna 20, and the longitudinal axis is first antenna 20a and the isolation angle value of the second antenna 20b.When dual-band antenna 20 in present embodiment works in 2.2-2.7GHz frequency range as can be seen from Figure 5, the maximum of the isolation of first antenna 20a and the second antenna 20b is 19.5dB.When dual-band antenna 20 works in 4.7-6.0GHz frequency range, the maximum of the isolation of first antenna 20a and the second antenna 20b is-16dB.In working frequency range, the maximum of the isolation of first antenna 20a and the second antenna 20b is respectively less than-10dB, meets the application demand of dual-band antenna.
Simultaneously working in mid frequency with above-mentioned dual-band antenna 20 is two frequency ranges, as 2.4GHz and two frequency ranges of 5.0GHz, and meets in dual-band antenna the insulated degree requirement between each antenna element.
Although being illustrated and described the preferred embodiment of the present invention, but those skilled in the art will appreciate that, may be made that various different changes and improvements, and these are all without departing from the true scope of the present invention.Therefore, it is intended that the invention is not limited in the disclosed detailed description of the invention as the optimal mode realized contemplated by the present invention, in all embodiments that the present invention includes have the protection domain of appended claims.
Claims (8)
1. a dual-band antenna, is arranged on substrate, and wherein this substrate includes first surface and the second surface being oppositely arranged, it is characterised in that this dual-band antenna includes:
Symmetrical first antenna and the second antenna, may be contained within this first surface, and wherein this first antenna includes:
Load point, for feed-in electromagnetic wave signal；And
Department of Radiation, one end is connected with this load point, and wherein, this Department of Radiation includes that the microstrip transmission line of multiple L-shaped and head and the tail are vertically connected, with in meandering shape；
The first symmetrical connecting portion and the second connecting portion, its two ends are connected with each other, may be contained within this first surface, for connecting the open end of the Department of Radiation of two antennas, and all include that the microstrip transmission line of multiple L-shaped and head and the tail are vertically connected, wherein, the width of the microstrip transmission line that every a junction includes is respectively less than the width of the microstrip transmission line that this Department of Radiation includes, and the half of the wavelength that length sum is this dual-band antenna radiated electromagnetic wave of the microstrip transmission line of the microstrip transmission line of described first connecting portion and described second connecting portion；And
Grounding parts, is arranged at this second surface.
2. dual-band antenna as claimed in claim 1, it is characterised in that the microstrip transmission line of each L-shaped of the Department of Radiation width in horizontal, vertical direction is different.
3. dual-band antenna as claimed in claim 1, it is characterised in that first antenna is disposed adjacent with the open end of the second antenna.
4. dual-band antenna as claimed in claim 1, it is characterised in that this value of impedance of the microstrip transmission line of each antenna in first, second antenna and the every a junction in first, second connecting portion is 1: 3.
5. dual-band antenna as claimed in claim 3, it is characterised in that the first connecting portion is for connecting the open end of the Department of Radiation of first antenna, and the second connecting portion is for connecting the open end of the Department of Radiation of the second antenna, all with in roundabout shape.
6. dual-band antenna as claimed in claim 1, it is characterised in that the microstrip transmission line of first and second connecting portion all includes a strip and multiple billet, 1.5 times of a length of billet length of strip.
7. dual-band antenna as claimed in claim 1, it is characterised in that load point is arranged at first surface, is electrically connected at Department of Radiation and the grounding parts of first and second antenna.
8. dual-band antenna as claimed in claim 1, it is characterised in that the quantity of the L-shaped microstrip transmission line of Department of Radiation is all more than the quantity of L-shaped microstrip transmission line of every a junction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210298267.4A CN103633438B (en) | 2012-08-21 | 2012-08-21 | Dual-band antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210298267.4A CN103633438B (en) | 2012-08-21 | 2012-08-21 | Dual-band antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103633438A CN103633438A (en) | 2014-03-12 |
| CN103633438B true CN103633438B (en) | 2016-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210298267.4A Expired - Fee Related CN103633438B (en) | 2012-08-21 | 2012-08-21 | Dual-band antenna |
Country Status (1)
| Country | Link |
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| CN (1) | CN103633438B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105024746B (en) * | 2014-04-29 | 2018-06-26 | 国基电子（上海）有限公司 | Wireless communication device and its method for transmitting signal |
| CN107275760B (en) * | 2017-05-31 | 2019-09-27 | 维沃移动通信有限公司 | A kind of terminal multi-antenna structure and mobile terminal |
| TWI679808B (en) * | 2018-09-10 | 2019-12-11 | 和碩聯合科技股份有限公司 | Dual-feed loop antenna structure and electronic device |
| CN112514162B (en) * | 2018-09-30 | 2022-06-10 | 华为技术有限公司 | Antenna and terminal |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM315410U (en) * | 2007-01-24 | 2007-07-11 | Cameo Communications Inc | Dual-frequency, single-plate, symmetrical antenna and wireless network apparatus containing the same |
| CN102104194A (en) * | 2010-12-13 | 2011-06-22 | 惠州硕贝德无线科技股份有限公司 | Subminiature external printed circuit board dual-frequency antenna |
-
2012
- 2012-08-21 CN CN201210298267.4A patent/CN103633438B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM315410U (en) * | 2007-01-24 | 2007-07-11 | Cameo Communications Inc | Dual-frequency, single-plate, symmetrical antenna and wireless network apparatus containing the same |
| CN102104194A (en) * | 2010-12-13 | 2011-06-22 | 惠州硕贝德无线科技股份有限公司 | Subminiature external printed circuit board dual-frequency antenna |
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| Publication number | Publication date |
|---|---|
| CN103633438A (en) | 2014-03-12 |
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Effective date of registration: 20180226 Address after: The Guangxi Zhuang Autonomous Region Nanning hi tech Zone headquarters Road No. 18, China ASEAN enterprise headquarters base three 5# workshop Patentee after: NANNING FUGUI PRECISION INDUSTRIAL CO., LTD. Address before: 518109 Guangdong city of Shenzhen province Baoan District Longhua Town Industrial Zone tabulaeformis tenth East Ring Road No. 2 two Co-patentee before: Hon Hai Precision Industry Co., Ltd. Patentee before: Hongfujin Precise Industry (Shenzhen) Co., Ltd. |
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Granted publication date: 20160803 Termination date: 20180821 |
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