CN105490035A - Low-profile GSM-LTE coplanar directional antenna - Google Patents
Low-profile GSM-LTE coplanar directional antenna Download PDFInfo
- Publication number
- CN105490035A CN105490035A CN201510885053.0A CN201510885053A CN105490035A CN 105490035 A CN105490035 A CN 105490035A CN 201510885053 A CN201510885053 A CN 201510885053A CN 105490035 A CN105490035 A CN 105490035A
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- lte
- radiating element
- gsm
- paster
- directional antenna
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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Abstract
The invention relates to the technical field of microstrip antennas, in particular to a low-profile GSM-LTE coplanar directional antenna. The low-profile GSM-LTE coplanar directional antenna comprises a metal reflecting plate, an LTE radiating element patch, an LTE radiating element parasitic patch, a GSM radiating element patch, an LTE radiating element feed structure and a GSM radiating element feed structure. According to the low-profile GSM-LTE coplanar directional antenna, the LTE radiating element patch, the LTE radiating element parasitic patch and the GSM radiating element patch are arranged on the metal reflecting plate in a coplanar manner. The low-profile GSM-LTE coplanar directional antenna is in directional radiation, simultaneously supports a GSM band and an LTE band, has a low profile and a simple structure when obtaining a wide working band, is directly fed by a coaxial feeder line; a complicated feed network is omitted; and design and installation are facilitated.
Description
Technical field
The present invention relates to microstrip antenna technical field, particularly relate to the coplanar directional antenna of a kind of low section GSM, LTE.
Background technology
Along with the diversified development of mobile communication business, consider compatibility, the multi-mode working of antenna becomes the ideal scheme solving Multi net voting access, and system or terminal works get more and more in the situation of various modes.Therefore, research and design can realize the built-in wide-band of multiple antennas in limited space, low section, miniature antenna become current study hotspot.Extensively adopt broadband or multiband antenna and multi-antenna technology to adapt to the demand of multi-mode working in existing mobile terminal (mobile phone), its antenna is essentially omnidirectional radiation, such antenna is designed, the performances such as still Antenna Operation bandwidth, miniaturization and the efficiency of current major concern in minimum space.Planar inverted-F antenna (PIFA) and monopole-like antenna are widely used in terminal, but its relative bandwidth is narrower.The measures such as the many feed structures of usual employing, multi-resonant minor matters and Multi-layer design improve the beamwidth of antenna, although antenna can do very little, but standing wave is large, polarization purity and isolation index can not be well solved usually, and is not directed radiation, is also difficult to realize co-planar designs.For new application scene, need, under given little space size (as ultralow section) constraints, to realize isolation and the broadband performance of antenna between different mode.In traditional mobile terminal, the scheme of Antenna Design can not meet new application demand, and therefore the design of antenna becomes a difficult problem in new application system realization.
Summary of the invention
The object of the invention is the defect overcoming prior art existence, the coplanar directional antenna of low section GSM, LTE that a kind of structure is simple, multi-mode, band are wide is provided.
The technical scheme realizing the object of the invention is: a kind of low section GSM, the coplanar directional antenna of LTE, comprise metallic reflection plate, low section GSM, the coplanar directional antenna of LTE also comprises LTE radiating element paster, LTE radiating element parasitic patch, GSM radiating element paster, LTE radiating element feed structure and GSM radiating element feed structure, LTE radiating element paster, LTE radiating element parasitic patch and GSM radiating element paster are all positioned at the same surface of metallic reflection plate, LTE radiating element paster comprises the first ground connection limit, LTE radiating element parasitic patch comprises the second ground connection limit, GSM radiating element paster comprises the 3rd ground connection limit, first ground connection limit, second ground connection limit and the 3rd ground connection limit are all vertically mounted on metallic reflection plate.
As prioritization scheme of the present invention, LTE radiating element paster is in " recessed " font, LTE radiating element paster also comprises the first rectangular channel, and the main body of LTE radiating element paster is arranged on the first ground connection limit, and the main body of LTE radiating element paster is parallel with metallic reflection plate.
As prioritization scheme of the present invention, LTE radiating element paster also comprises bending edges, and the main body of bending edges and LTE radiating element paster forms LTE bending section.
As prioritization scheme of the present invention, the main body of LTE radiating element paster and the distance of metallic reflection plate are between the main body of 10mm, LTE radiating element paster and metallic reflection plate be air dielectric.
As prioritization scheme of the present invention, LTE radiating element feed structure is coaxial feeder, and the inner wire of coaxial feeder connects the main body of LTE radiating element paster, and the outer conductor of coaxial feeder is connected on metallic reflection plate.
As prioritization scheme of the present invention, GSM radiating element paster also comprises the second rectangular channel, and the main body of GSM radiating element paster is arranged on the 3rd ground connection limit, and the main body of GSM radiating element paster is parallel with metallic reflection plate.
As prioritization scheme of the present invention, the main body of GSM radiating element paster and the distance of metallic reflection plate are between the main body of 10mm, GSM radiating element paster and metallic reflection plate be air dielectric.
As prioritization scheme of the present invention, GSM radiating element feed structure is coaxial feeder, and the inner wire of coaxial feeder connects the main body of GSM radiating element paster, and the outer conductor of coaxial feeder is connected on metallic reflection plate.
As prioritization scheme of the present invention, LTE radiating element parasitic patch is polygon or circle.
As prioritization scheme of the present invention, between LTE radiating element paster and LTE radiating element parasitic patch, be provided with gap.
The present invention has positive effect: 1) the present invention is arranged on metallic reflection plate by coplanar for radiation component, antenna of the present invention is directed radiation, support GSM frequency range and LTE frequency range, compact conformation, volume are little simultaneously, and the isolation simultaneously between two frequency ranges reaches more than 18dB;
2) the first ground connection limit of the present invention, the second ground connection limit, the 3rd ground connection limit and LTE bending section can effectively reduce the Q value of antenna, play good impedance matching effect, have wider working band and less standing wave;
3) the present invention has very low section while obtaining very wide working band, especially obvious in GSM frequency range;
4) structure of the present invention simple, by coaxial feeder direct feed, eliminate complicated feeding network, facilitate design and installation.
Accompanying drawing explanation
In order to make content of the present invention more easily be clearly understood, below according to specific embodiment also by reference to the accompanying drawings, the present invention is further detailed explanation, wherein:
Fig. 1 is structure chart of the present invention;
Fig. 2 is the return loss plot of GSM frequency range;
Fig. 3 is the return loss plot of LTE frequency range;
Fig. 4 is the isolation figures of two feed port in GSM frequency range;
Fig. 5 is the isolation figures of two feed port in LTE frequency range.
Wherein, 1, metallic reflection plate, 2, LTE radiating element paster, 3, LTE radiating element parasitic patch, 4, GSM radiating element paster, 5, LTE radiating element feed structure, 6, GSM radiating element feed structure, 21, the first ground connection limit, 31, the second ground connection limit, the 41, the 3rd ground connection limit, the 22, first rectangular channel, 23, bending edges, the 42, second rectangular channel.
Embodiment
As shown in Figure 1, the invention discloses a kind of low section GSM, the coplanar directional antenna of LTE, comprise metallic reflection plate 1, low section GSM, the coplanar directional antenna of LTE also comprises LTE radiating element paster 2, LTE radiating element parasitic patch 3, GSM radiating element paster 4, LTE radiating element feed structure 5 and GSM radiating element feed structure 6, LTE radiating element paster 2, LTE radiating element parasitic patch 3 and GSM radiating element paster 4 are all positioned at the same surface of metallic reflection plate 1, LTE radiating element paster 2 comprises the first ground connection limit 21, LTE radiating element parasitic patch 3 comprises the second ground connection limit 31, GSM radiating element paster 4 comprises the 3rd ground connection limit 41, first ground connection limit 21, second ground connection limit 31 and the 3rd ground connection limit 41 are all vertically mounted on metallic reflection plate 1.Wherein, the first ground connection limit 31, ground connection limit 21, second and the 3rd ground connection limit 41 can effectively reduce the Q value of the coplanar directional antenna of low section GSM, LTE, play good impedance matching effect, effectively reduce the size of antenna, the bandwidth of broadening antenna.
LTE radiating element paster 2 is in " recessed " font, and the main body that LTE radiating element paster 2 also comprises the first rectangular channel 22, LTE radiating element paster 2 is arranged on the first ground connection limit 21, and the main body of LTE radiating element paster 2 is parallel with metallic reflection plate 1.First rectangular channel 22 of the main body of LTE radiating element paster 2 makes the body current path of LTE radiating element paster 2 bend, add the effective length of the coplanar directional antenna radiation of low section GSM, LTE, reduce resonance frequency, and the size of the coplanar directional antenna of low section GSM, LTE can effectively be reduced.
LTE radiating element paster 2 also comprises bending edges 23, bending edges 23 forms LTE bending section with the main body of LTE radiating element paster 2, and this LTE bending section effectively can reduce the Q value of antenna, plays good impedance matching effect, the broadening bandwidth of antenna.
The main body of LTE radiating element paster 2 and the distance of metallic reflection plate 1 are between the main body of 10mm, LTE radiating element paster 2 and metallic reflection plate 1 be air dielectric.Adopt air dielectric, not only make simple and convenient, and provide cost savings.
The main body that GSM radiating element paster 4 also comprises the second rectangular channel 42, GSM radiating element paster 4 is arranged on the 3rd ground connection limit 41, and the main body of GSM radiating element paster 4 is parallel with metallic reflection plate 1.
Second rectangular channel 42 of the main body of GSM radiating element paster 4 makes the body current path of GSM radiating element paster 4 bend, add the effective length of the coplanar directional antenna radiation of low section GSM, LTE, reduce resonance frequency, and the size of the coplanar directional antenna of low section GSM, LTE can effectively be reduced.
The main body of GSM radiating element paster 4 and the distance of metallic reflection plate 1 are between the main body of 10mm, GSM radiating element paster 4 and metallic reflection plate 1 be air dielectric.Adopt air dielectric, not only make simple and convenient, and provide cost savings.
LTE radiating element feed structure 5 is coaxial feeder, and the inner wire of coaxial feeder connects the main body of LTE radiating element paster 2, and the outer conductor of coaxial feeder is connected on metallic reflection plate 1.GSM radiating element feed structure 6 is coaxial feeder, and the inner wire of coaxial feeder connects the main body of GSM radiating element paster 4, and the outer conductor of coaxial feeder is connected on metallic reflection plate 1.LTE radiating element feed structure 5 and GSM radiating element feed structure 6 all adopt coaxial feeding, eliminate complicated feeding network, facilitate design and installation.
LTE radiating element parasitic patch 3 is polygon or circle, gap is provided with between LTE radiating element paster 2 and LTE radiating element parasitic patch 3, the excitation of LTE radiating element parasitic patch 3 is realized by the slot-coupled of LTE radiating element parasitic patch 3 with LTE radiating element paster 2, LTE radiating element parasitic patch 3 and LTE radiating element paster 2 respectively resonance in different frequencies thus formation double resonance carrys out the bandwidth of the coplanar directional antenna of broadening low section GSM, LTE.
Through software emulation and object test, as shown in Figure 2-5, the coplanar directional antenna of this low section GSM, LTE is all less than-9.6dB in the emulation of the return loss of the frequency range (880-960MHz) of GSM and measured result, all-10dB is less than in the emulation of the return loss of the F/E/D frequency range (1880-2620MHz) of LTE and measured result, isolation between two feed port reaches more than 18dB in GSM frequency range (880-960MHz), reaches more than 23.9dB in the F/E/D frequency range (1880-2620MHz) of LTE.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. one kind low section GSM, the coplanar directional antenna of LTE, comprise metallic reflection plate (1), it is characterized in that: described low section GSM, the coplanar directional antenna of LTE also comprises LTE radiating element paster (2), LTE radiating element parasitic patch (3), GSM radiating element paster (4), LTE radiating element feed structure (5) and GSM radiating element feed structure (6), described LTE radiating element paster (2), LTE radiating element parasitic patch (3) and GSM radiating element paster (4) are all positioned at the same surface of metallic reflection plate (1), described LTE radiating element paster (2) comprises the first ground connection limit (21), described LTE radiating element parasitic patch (3) comprises the second ground connection limit (31), described GSM radiating element paster (4) comprises the 3rd ground connection limit (41), the first described ground connection limit (21), second ground connection limit (31) and the 3rd ground connection limit (41) are all vertically mounted on metallic reflection plate (1).
2. the coplanar directional antenna of one according to claim 1 low section GSM, LTE, it is characterized in that: described LTE radiating element paster (2) is in " recessed " font, described LTE radiating element paster (2) also comprises the first rectangular channel (22), the main body of LTE radiating element paster (2) is arranged on the first ground connection limit (21), and the main body of LTE radiating element paster (2) is parallel with metallic reflection plate (1).
3. the coplanar directional antenna of one according to claim 2 low section GSM, LTE, it is characterized in that: described LTE radiating element paster (2) also comprises bending edges (23), described bending edges (23) forms LTE bending section with the main body of LTE radiating element paster (2).
4. the coplanar directional antenna of one according to claim 2 low section GSM, LTE, it is characterized in that: the main body of LTE radiating element paster (2) and the distance of metallic reflection plate (1) are between the main body of 10mm, LTE radiating element paster (2) and metallic reflection plate (1) be air dielectric.
5. the coplanar directional antenna of one according to claim 2 low section GSM, LTE, it is characterized in that: described LTE radiating element feed structure (5) is coaxial feeder, the inner wire of coaxial feeder connects the main body of LTE radiating element paster (2), and the outer conductor of coaxial feeder is connected on metallic reflection plate (1).
6. the coplanar directional antenna of one according to claim 1 low section GSM, LTE, it is characterized in that: described GSM radiating element paster (4) also comprises the second rectangular channel (42), the main body of GSM radiating element paster (4) is arranged on the 3rd ground connection limit (41), and the main body of GSM radiating element paster (4) is parallel with metallic reflection plate (1).
7. the coplanar directional antenna of one according to claim 6 low section GSM, LTE, it is characterized in that: the main body of GSM radiating element paster (4) and the distance of metallic reflection plate (1) are between the main body of 10mm, GSM radiating element paster (4) and metallic reflection plate (1) be air dielectric.
8. the coplanar directional antenna of one according to claim 6 low section GSM, LTE, it is characterized in that: described GSM radiating element feed structure (6) is coaxial feeder, the inner wire of coaxial feeder connects the main body of GSM radiating element paster (4), and the outer conductor of coaxial feeder is connected on metallic reflection plate (1).
9. the coplanar directional antenna of one according to claim 1 low section GSM, LTE, is characterized in that: described LTE radiating element parasitic patch (3) is polygon or circle.
10. the coplanar directional antenna of one according to claim 1 low section GSM, LTE, is characterized in that: be provided with gap between described LTE radiating element paster (2) and LTE radiating element parasitic patch (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510885053.0A CN105490035B (en) | 2015-12-04 | 2015-12-04 | A kind of coplanar directional aerial of low section GSM, LTE |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510885053.0A CN105490035B (en) | 2015-12-04 | 2015-12-04 | A kind of coplanar directional aerial of low section GSM, LTE |
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| CN105490035A true CN105490035A (en) | 2016-04-13 |
| CN105490035B CN105490035B (en) | 2019-04-02 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106785455A (en) * | 2017-03-14 | 2017-05-31 | 昆山瀚德通信科技有限公司 | Ultra-wideband wall-mounted antenna |
| CN108987945A (en) * | 2018-07-24 | 2018-12-11 | 维沃移动通信有限公司 | A kind of terminal device |
| CN112909544A (en) * | 2021-02-08 | 2021-06-04 | 歌尔科技有限公司 | Electronic equipment and multi-antenna system thereof |
| CN114520413A (en) * | 2022-02-24 | 2022-05-20 | 浙江海通通讯电子股份有限公司 | Low-profile terminal antenna |
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| CN105490035B (en) | 2019-04-02 |
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Denomination of invention: A low profile GSM and LTE coplanar directional antenna Effective date of registration: 20220119 Granted publication date: 20190402 Pledgee: Bank of China Limited by Share Ltd. Nanjing Jiangning branch Pledgor: NANJING HOWKING TECHNOLOGY Co.,Ltd. Registration number: Y2022980000729 |
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