CN104051845A - Mobile phone tunable antenna based on metamaterial structure - Google Patents
Mobile phone tunable antenna based on metamaterial structure Download PDFInfo
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- CN104051845A CN104051845A CN201410223593.8A CN201410223593A CN104051845A CN 104051845 A CN104051845 A CN 104051845A CN 201410223593 A CN201410223593 A CN 201410223593A CN 104051845 A CN104051845 A CN 104051845A
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Abstract
The invention discloses a mobile phone tunable antenna based on a metamaterial structure. A CLL of a unit structure forming metamaterials is directly used as an irradiator of the antenna, meanwhile, inductive coupled feeding is adopted, and the well-matched miniaturized antenna is achieved. The frequency reconfigurable technology is combined, a variable capacitance diode is loaded, and frequency is tunable. An antenna substrate is made of FR4 materials, and the FR4 materials are one kind of commonly-used substrate materials in the antenna processing process. Other structures are formed by etching and processing copper, cost is low, and processing is convenient. In conclusion, the designed mobile phone tunable antenna achieves the tunable frequency, and has the advantages of being small in size, simple in structure, low in cost and the like, and therefore wide application value and market potential are achieved.
Description
Technical field
The invention belongs to antenna technology and wireless communication field, relate to a kind of mobile phone tunable antenna based on metamaterial structure.
Background technology
Low-frequency range, because its coverage is very wide, can reduce base station laying density, following 4G wireless telecommunications extensive use.In antenna for mobile phone, LTE, GSM850, the current major part of GSM900 is single antenna, but single antenna has a lot of drawbacks, such as anti-ageing drop, some posture absorption of human body is very large etc.Utilize two antennas to carry out diversity according to decline and human body, thereby improve performance.But in the dual-antenna system of application, low-frequency range coupling is serious, has greatly affected overall system performance at present.
Summary of the invention
The present invention is not changing under the prerequisite of traditional main antenna, by utilizing the special radiance design restructural single antenna of super material, realizes restructural, and low coupling, to meet the requirement of bandwidth and performance.
The technical solution used in the present invention is:
Mobile phone tunable antenna based on metamaterial structure, comprise FR4 substrate, metal floor, Frequency Adjustable loop antenna, it is characterized in that: Frequency Adjustable loop antenna is made up of ring and super material cell structure capacitive loaded ring (CLL) in feed, loads patch capacitor and variable capacitance diode regulates antenna frequencies on capacitive loaded ring; Antenna frequencies adjustable range can cover LTE700 to GSM900.
The beneficial effect that the present invention has is:
Tunable antenna size of the present invention is only 25mm × 18mm × 0.8mm, can be integrated in mobile phone.Antenna tool frequency adjustability, frequency adjustable extent covers LTE700, GSM850 and GSM900 frequency range.While using the real-time frequency modulation of variable capacitance diode, when bandwidth is transferred to LTE frequency range, being 10 MHz, being transferred to GSM850, is 20 MHz when GSM900 frequency range.
Brief description of the drawings
Fig. 1 is the overall structure vertical view of antenna.
Fig. 2 is the tuning range schematic diagram of antenna.
Fig. 3 is the S11 result figure of antenna in LTE700, GSM850 and GSM900 frequency range.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described:
As shown in Figure 1, in the present invention, antenna forms by encircling 1-2, radiation outer shroud 1-3, distributing point 1-4, variable capacitance diode 1-5 and auxiliary patch capacitor 1-6 in FR4 substrate, metal floor 1-1, feed.The size of antenna is 25mm × 18mm × 0.8mm, and what substrate adopted is the most cheap the most frequently used FR4 material in antenna processing, and its dielectric constant is 4.4.The material of antenna is copper.On interior ring, have distributing point, by interior loop coupling feed to outer shroud; On outer shroud, loaded variable capacitance diode and auxiliary patch capacitor, can realize the frequency controllability of antenna, the highest and low-limit frequency that this antenna can be adjusted to as shown in Figure 2.
The variable capacitance diode model loading in outer shroud is Skyworks SMV1247, and the adjustable range of this variable capacitance diode capacitance under the direct voltage of 0-3V is 0.95-8.86pF.Under the acting in conjunction of auxiliary patch capacitor of the 1.5pF of series connection, the low-limit frequency (6dB bandwidth place) that antenna can be adjusted to is 668MHz, and highest frequency is 982MHz, can cover LTE700, GSM850 and GSM900 frequency range.
Antenna in the S11 of different frequency range result as shown in Figure 3.While using the real-time frequency modulation of variable capacitance diode, when bandwidth is transferred to LTE frequency range, being 10 MHz, being transferred to GSM850, is 20 MHz when GSM900 frequency range.
The advantage of mobile phone tunable antenna of the present invention comprises:
(1) cost is low and size is relatively little.Antenna only adopts FR4 and copper bi-material, is that the size of most basic antenna rapidoprint and whole antenna only has 25mm × 18mm × 0.8mm.
(2) cover LTE700, GSM850 and GSM900 frequency range.As shown in Figure 2, antenna Frequency Adjustable scope is 668-982MHz, has covered LTE700, GSM850 and GSM900 frequency range.
(3) simple in structure easy to adjust.Due to the introducing of this super material cell of capacitive loaded ring, the structure of antenna is very simple with respect to other frequency-modulated antennas.And in the middle of the mobile phone of other sizes of antenna applications time, only need to change the capacitance of interior ring size and auxiliary capacitor, can adapt to new mobile phone.
The present invention has stated a kind of mobile phone tunable antenna based on metamaterial structure, the cellular construction that adopts this formation of capacitive loaded ring (CLL) super material is directly as the radiant body of antenna, adopt inductive coupled feed simultaneously, realize the miniature antenna of matched well.In conjunction with frequency reconfigurable technology, load variable capacitance diode, realize frequency adjustable.What in the present invention, antenna substrate adopted is FR4 material, is one of base material the most frequently used in antenna processing.And other structures are to be all made by copper etching and processing, with low cost and easy to process.In sum, it is adjustable that the mobile phone tunable antenna of designing has not only been realized frequency, but also it is little to have size, simple in structure, and low cost and other advantages, therefore has wide using value and market potential.
Claims (2)
1. the mobile phone tunable antenna based on metamaterial structure, comprise FR4 substrate, metal floor, Frequency Adjustable loop antenna, it is characterized in that: Frequency Adjustable loop antenna is made up of ring and super material cell structure capacitive loaded ring in feed, loads patch capacitor and variable capacitance diode regulates antenna frequencies on capacitive loaded ring; Antenna frequencies adjustable range is 668-982MHz, covers LTE700, GSM850 and GSM900 frequency range.
2. the mobile phone tunable antenna based on metamaterial structure according to claim 1, it is characterized in that: described variable capacitance diode model is Skyworks SMV1247, the adjustable range of this variable capacitance diode capacitance under the direct voltage of 0-3V is 0.95-8.86pF, with the acting in conjunction of the auxiliary patch capacitor of the 1.5pF connecting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410223593.8A CN104051845A (en) | 2014-05-23 | 2014-05-23 | Mobile phone tunable antenna based on metamaterial structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410223593.8A CN104051845A (en) | 2014-05-23 | 2014-05-23 | Mobile phone tunable antenna based on metamaterial structure |
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| Publication Number | Publication Date |
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| CN104051845A true CN104051845A (en) | 2014-09-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201410223593.8A Pending CN104051845A (en) | 2014-05-23 | 2014-05-23 | Mobile phone tunable antenna based on metamaterial structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104408506A (en) * | 2014-11-20 | 2015-03-11 | 南京航空航天大学 | Transparent reconfigurable radio frequency identification label based on electromagnetic inductance |
| WO2017198000A1 (en) * | 2016-05-19 | 2017-11-23 | 深圳超级数据链技术有限公司 | Metamaterial, and method and apparatus thereof for adjusting frequency |
| TWI653787B (en) | 2016-06-06 | 2019-03-11 | 仁寶電腦工業股份有限公司 | Adjustable frequency antenna device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103022688A (en) * | 2011-09-27 | 2013-04-03 | 北京九鹤科技有限公司 | Antenna feed structure, wireless communication device and frequency-adjusting method |
-
2014
- 2014-05-23 CN CN201410223593.8A patent/CN104051845A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103022688A (en) * | 2011-09-27 | 2013-04-03 | 北京九鹤科技有限公司 | Antenna feed structure, wireless communication device and frequency-adjusting method |
Non-Patent Citations (1)
| Title |
|---|
| 俞钰峰: ""应用于无线通信的小型化天线研究"", 《中国博士学位论文全文数据库信息科技辑》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104408506A (en) * | 2014-11-20 | 2015-03-11 | 南京航空航天大学 | Transparent reconfigurable radio frequency identification label based on electromagnetic inductance |
| CN104408506B (en) * | 2014-11-20 | 2017-10-13 | 南京航空航天大学 | Based on the restructural RFID tag that electromagnetically induced is transparent |
| WO2017198000A1 (en) * | 2016-05-19 | 2017-11-23 | 深圳超级数据链技术有限公司 | Metamaterial, and method and apparatus thereof for adjusting frequency |
| CN107404003A (en) * | 2016-05-19 | 2017-11-28 | 深圳超级数据链技术有限公司 | Meta Materials and its frequency adjustment method and device |
| CN107404003B (en) * | 2016-05-19 | 2019-11-05 | 深圳光启合众科技有限公司 | Meta Materials and its frequency adjustment method and device |
| US10566960B2 (en) | 2016-05-19 | 2020-02-18 | Shen Zhen Kuang-Chi Hezhong Technology Ltd. | Metamaterial, and method and apparatus for adjusting frequency of metamaterial |
| TWI653787B (en) | 2016-06-06 | 2019-03-11 | 仁寶電腦工業股份有限公司 | Adjustable frequency antenna device |
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Application publication date: 20140917 |