CN103928761A - Broadband antenna with resonance type feed structure adopted - Google Patents
Broadband antenna with resonance type feed structure adopted Download PDFInfo
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- CN103928761A CN103928761A CN201410140606.5A CN201410140606A CN103928761A CN 103928761 A CN103928761 A CN 103928761A CN 201410140606 A CN201410140606 A CN 201410140606A CN 103928761 A CN103928761 A CN 103928761A
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Abstract
The invention provides a broadband antenna with a resonance type feed structure adopted. The broadband antenna comprises an antenna element and a first resonance circuit, wherein the antenna element and the first resonance circuit are separated from each other. The antenna element is connected to a ground potential of a mobile phone circuit board through a grounding circuit, the first resonance circuit comprises a resonance element and a first inductor in series connection with the resonance element, the first inductor is connected to a feed circuit through a connecting circuit, and the feed circuit is connected to a signal source of the mobile phone circuit board. According to the broadband antenna with the resonance type feed structure adopted, under the condition that the antenna element is simple in structure, the bandwidth requirement of 4GLTE communication is met, and the bandwidth of the antenna can cover a plurality of mobile communication frequency bands at a time.
Description
Technical field
The present invention relates to mobile communication antenna field, particularly a kind of broad-band antenna that utilizes resonant feed structure.
Background technology
Along with the 4G LTE arrival in communication epoch, mobile phone market is more and more higher to the bandwidth requirement of antenna for mobile phone, and in the low-frequency range (698-960MHz) of LTE, the characteristic of the disposable covering of the beamwidth of antenna will significantly reduce manufacture and the R&D costs of antenna especially.Yet for meeting the requirement of modern mobile phone on attractive in appearance to structure, mobile phone thickness is more and more thinner, it is complicated that internal environment is tending towards, and causes the utilized space of antenna in mobile phone more and more less, directly affects the band merit of antenna.
Fig. 1 is the structural representation of existing antenna for mobile phone, the shape of antenna element 10 is only schematic, can convert according to the interior spatial structure of mobile phone, antenna element 10 is connected to the earth potential of circuit board of mobile phone 10 by ground path 11, resonant element 20 is connected to the signal source on circuit board of mobile phone 10 by feeder line 21.
Figure 2 shows that the reflection coefficient curve of antenna for mobile phone in Fig. 1, reflection coefficient curve can find out that existing antenna for mobile phone is at low-frequency range ω
lthe coverage property of bandwidth very limited, how to improve the coverage property of antenna for mobile phone, be current problem demanding prompt solution.
Summary of the invention
The present invention proposes a kind of broad-band antenna that utilizes resonant feed structure, solved the little problem of antenna for mobile phone bandwidth coverage in prior art.
Technical scheme of the present invention is achieved in that
A broad-band antenna that utilizes resonant feed structure, comprising: the antenna element of released state and the first resonant circuit; Antenna element is connected to the earth potential of circuit board of mobile phone by ground path, described the first resonant circuit comprises resonant element and the first inductor being connected in series, described the first inductor is connected to feeder line by connection line, and feeder line is connected to the signal source on circuit board of mobile phone.
Alternatively, described the first resonant circuit is monopole antenna structure.
Alternatively, described antenna element, the first resonant circuit and circuit board are at grade.
Alternatively, described antenna element and the first resonant circuit are at same plane and higher than circuit board place plane.
Alternatively, described antenna element and the first resonant circuit are in different planes.
Alternatively, the broad-band antenna of resonant feed structure that utilizes of the present invention also comprises the second resonant circuit, described the second resonant circuit comprises the second inductor and the first capacitor being connected in series, one end of the second resonant circuit is connected to described feeder line by connection line, and the other end of the second resonant circuit is connected to described ground path by connection line; Described the second resonant circuit is annular resonant mode structure, by Electric and magnetic fields and described antenna element, is coupled.
Alternatively, the broad-band antenna of resonant feed structure that utilizes of the present invention also comprises N resonant circuit in parallel, N is greater than or equal to 1 integer, each of described N resonant circuit in parallel comprises inductor and the capacitor being connected in series mutually, its one end is connected to described feeder line by connection line, and its other end is connected to described ground path by connection line.
Alternatively, described antenna element, the first resonant circuit, the second resonant circuit and circuit board are at grade.
Alternatively, described antenna element, the first resonant circuit, the second resonant circuit are at same plane and higher than circuit board place plane.
Alternatively, described antenna element and the first resonant circuit and the second resonant circuit are in Different Plane.
The invention has the beneficial effects as follows: under the simply constructed condition of antenna element, reach the bandwidth requirement of 4GLTE communication, and, make a plurality of mobile communication frequency ranges of the disposable covering of bandwidth of antenna.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of existing antenna for mobile phone;
Fig. 2 is the reflection coefficient curve of antenna for mobile phone in Fig. 1;
Fig. 3 is the structural representation of an embodiment of the present invention's broad-band antenna of utilizing resonant feed structure;
Fig. 4 is the reflection coefficient curve of embodiment in Fig. 3;
Fig. 5 is the structural representation of another embodiment of the present invention's broad-band antenna of utilizing resonant feed structure;
Fig. 6 is the reflection coefficient curve of another embodiment in Fig. 5.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Existing antenna for mobile phone is at low-frequency range ω
lthe coverage property of bandwidth very limited, the invention provides a kind of broad-band antenna that utilizes resonant feed structure, at antenna element, construct under foolproof condition, reach the bandwidth requirement of 4G LTE communication.
As shown in Figure 3, in an embodiment of a kind of broad-band antenna that utilizes resonant feed structure of the present invention, comprising: the antenna element 10 of released state and the first resonant circuit 200; Antenna element 10 is connected to the earth potential of circuit board of mobile phone by ground path 11, the first resonant circuit 200 comprises resonant element 20 and the first inductor 22 being connected in series, the first inductor 22 is connected to feeder line 21 by connection line, and feeder line 21 is connected to the signal source on circuit board of mobile phone.
In the first resonant circuit 200 and antenna element 10 structures, it is released state, between the first resonant circuit 200 and antenna element 10, there is parasitic capacitance, by this parasitic capacitance, be coupled, the highfield excitation antenna element 10 being produced by the first resonant circuit 200, thereby jointly produce radiation effect, improve bandwidth performance.The first inductor 22 plays very important effect, adjusts the impedance slope of the first resonant circuit by the first capacitor 22, makes itself and antenna element reach the effect of mating.Coupling coefficient between antenna element 10 and the first resonant circuit 200 by the inductance value of the first inductor, the interval determination between the length of the first resonant circuit 200 and the first resonant circuit 200 and antenna element 10.
As shown in Figure 4, the embodiment shown in Fig. 3 is at low-frequency range ω
lbandwidth, due to the regulating action of the first inductor, at ω
lplace produces resonance, has widened at low-frequency range ω
lbandwidth, improved bandwidth performance.
Preferably, above-mentioned the first resonant circuit 200 is monopole antenna structure.
Preferably, above-mentioned antenna element 10, the first resonant circuit 200 and circuit board 30 are at grade; Or above-mentioned antenna element 10 and the first resonant circuit 200 are at same plane and higher than circuit board 30 place planes; Or described antenna element 10 and the first resonant circuit 200 are in different planes.
As shown in Figure 5, the present invention utilizes in another embodiment of broad-band antenna of resonant feed structure, comprise entire infrastructure embodiment illustrated in fig. 3, also comprise the second resonant circuit 400, the second resonant circuit 400 comprises the second inductor 41 and the first capacitor 42 being connected in series, the sequence of positions of the second inductor 41 and the first capacitor 42 is only schematic, can adjust arbitrarily, the other end that one end of the second resonant circuit 400 is connected to feeder line 21, the second resonant circuits 400 by connection line is connected to ground path 11 by connection line.The connected mode of the second resonant circuit 400 shown in Fig. 5 is a preferred implementation, one end of the second resonant circuit 400 is connected to feeder line 21, the second resonant circuits 400 by the identical connection line other end with the first resonant circuit 200 is connected to ground path 11 with antenna element 10 by identical connection line.
The first inductor 22 is adjusted the first resonant circuit 200 at the impedance slope of low-frequency range, makes itself and antenna element reach the effect of mating; The second inductor 41 and the first capacitor 42 are adjusted the second resonant circuit 400 at the impedance slope of high band, make itself and antenna element reach the effect of mating.
As shown in Figure 5 and Figure 6, the first resonant circuit 200 is released state with antenna element 10, between the first resonant circuit 200 and antenna element 10, pass through field coupled, the highfield excitation antenna element 10 being produced by the first resonant circuit 200, thereby make antenna element 10 and the common radiation effect that produces of the first resonant circuit 200, improve the beamwidth of antenna at low-frequency range ω
lperformance; The second resonant circuit 400 is annular resonant mode structure, antenna element 10 and the second resonant circuit 400 are coupled by Electric and magnetic fields, the Electric and magnetic fields effect excitation antenna element 10 being produced by the second resonant circuit 400, thereby make antenna element 10 and the common radiation effect that produces of the second resonant circuit 400, improve the beamwidth of antenna at high band ω
hperformance.
Preferably, above-mentioned antenna element 10, the first resonant circuit 200, the second resonant circuit 400 and circuit board 30 are at grade; Or above-mentioned antenna element 10, the first resonant circuit 200, the second resonant circuit 400 are at same plane and higher than circuit board 30 place planes; Or above-mentioned antenna element 10 and the first resonant circuit 200 and the second resonant circuit 400 are in Different Plane.
The present invention utilizes in another embodiment of broad-band antenna of resonant feed structure, comprise entire infrastructure embodiment illustrated in fig. 5, also comprise N resonant circuit in parallel, N is greater than or equal to 1 integer, each of described N resonant circuit in parallel comprises inductor and the capacitor being connected in series mutually, its one end is connected to described feeder line by connection line, and its other end is connected to described ground path by connection line.By the setting to inductor and capacitor, adjust the impedance slope of each phase resonance circuit, make itself and antenna element reach the effect of mating.
The broad-band antenna that utilizes resonant feed structure of the present invention, under the simply constructed condition of antenna element, reaches the bandwidth requirement of 4G LTE communication, and, make a plurality of mobile communication frequency ranges of the disposable covering of bandwidth of antenna.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a broad-band antenna that utilizes resonant feed structure, is characterized in that, comprising: the antenna element of released state and the first resonant circuit; Antenna element is connected to the earth potential of circuit board of mobile phone by ground path, described the first resonant circuit comprises resonant element and the first inductor being connected in series, described the first inductor is connected to feeder line by connection line, and feeder line is connected to the signal source on circuit board of mobile phone.
2. the broad-band antenna that utilizes resonant feed structure as claimed in claim 1, is characterized in that, the monopole antenna structure that described the first resonant circuit is monopole antenna structure or a plurality of parallel connections.
3. the broad-band antenna that utilizes resonant feed structure as claimed in claim 1 or 2, is characterized in that, described antenna element, the first resonant circuit and circuit board are at grade.
4. the broad-band antenna that utilizes resonant feed structure as claimed in claim 1 or 2, is characterized in that, described antenna element and the first resonant circuit are at same plane and higher than circuit board place plane.
5. the broad-band antenna that utilizes resonant feed structure as claimed in claim 1 or 2, is characterized in that, described antenna element and the first resonant circuit are in different planes.
6. the broad-band antenna that utilizes resonant feed structure as claimed in claim 1 or 2, it is characterized in that, also comprise the second resonant circuit, described the second resonant circuit comprises the second inductor and the first capacitor being connected in series, one end of the second resonant circuit is connected to described feeder line by connection line, and the other end of the second resonant circuit is connected to described ground path by connection line; Described the second resonant circuit is annular resonant mode structure, by Electric and magnetic fields and described antenna element, is coupled.
7. the broad-band antenna that utilizes resonant feed structure as claimed in claim 6, it is characterized in that, also comprise N resonant circuit in parallel, N is greater than or equal to 1 integer, each of described N resonant circuit in parallel comprises inductor and the capacitor being connected in series mutually, its one end is connected to described feeder line by connection line, and its other end is connected to described ground path by connection line.
8. the broad-band antenna that utilizes resonant feed structure as claimed in claim 6, is characterized in that, described antenna element, the first resonant circuit, the second resonant circuit and circuit board are at grade.
9. the broad-band antenna that utilizes resonant feed structure as claimed in claim 6, is characterized in that, described antenna element, the first resonant circuit, the second resonant circuit are at same plane and higher than circuit board place plane.
10. the broad-band antenna that utilizes resonant feed structure as claimed in claim 6, is characterized in that, described antenna element and the first resonant circuit and the second resonant circuit are in Different Plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410140606.5A CN103928761B (en) | 2014-04-01 | 2014-04-01 | A kind of broad-band antenna using resonant feed structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410140606.5A CN103928761B (en) | 2014-04-01 | 2014-04-01 | A kind of broad-band antenna using resonant feed structure |
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| CN103928761A true CN103928761A (en) | 2014-07-16 |
| CN103928761B CN103928761B (en) | 2018-02-02 |
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| CN201410140606.5A Active CN103928761B (en) | 2014-04-01 | 2014-04-01 | A kind of broad-band antenna using resonant feed structure |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104269609A (en) * | 2014-09-16 | 2015-01-07 | 李文洁 | Slot antenna with resonant type feed structure |
| CN105449335A (en) * | 2014-08-20 | 2016-03-30 | 联想(北京)有限公司 | Electronic device |
| CN106299685A (en) * | 2015-06-26 | 2017-01-04 | 上海莫仕连接器有限公司 | Antenna system |
| CN107808993A (en) * | 2017-11-10 | 2018-03-16 | 深圳汉阳天线设计有限公司 | A kind of mobile phone metallic plate radiating antenna of annular resonant structure |
| CN108039584A (en) * | 2017-12-01 | 2018-05-15 | 广东欧珀移动通信有限公司 | Antenna module and electronic equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20020021248A1 (en) * | 2000-05-23 | 2002-02-21 | Zhinong Ying | Multi frequency-band antenna |
| CN102144334A (en) * | 2008-08-05 | 2011-08-03 | 株式会社村田制作所 | Antenna and wireless communication machine |
| CN103633450A (en) * | 2013-11-11 | 2014-03-12 | 联想(北京)有限公司 | Antenna and electronic equipment |
| CN203883127U (en) * | 2014-04-01 | 2014-10-15 | 刘扬 | Broadband antenna with resonance type feed structure |
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2014
- 2014-04-01 CN CN201410140606.5A patent/CN103928761B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020021248A1 (en) * | 2000-05-23 | 2002-02-21 | Zhinong Ying | Multi frequency-band antenna |
| CN102144334A (en) * | 2008-08-05 | 2011-08-03 | 株式会社村田制作所 | Antenna and wireless communication machine |
| CN103633450A (en) * | 2013-11-11 | 2014-03-12 | 联想(北京)有限公司 | Antenna and electronic equipment |
| CN203883127U (en) * | 2014-04-01 | 2014-10-15 | 刘扬 | Broadband antenna with resonance type feed structure |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105449335A (en) * | 2014-08-20 | 2016-03-30 | 联想(北京)有限公司 | Electronic device |
| CN104269609A (en) * | 2014-09-16 | 2015-01-07 | 李文洁 | Slot antenna with resonant type feed structure |
| CN106299685A (en) * | 2015-06-26 | 2017-01-04 | 上海莫仕连接器有限公司 | Antenna system |
| CN106299685B (en) * | 2015-06-26 | 2019-07-05 | 上海莫仕连接器有限公司 | Antenna system |
| CN107808993A (en) * | 2017-11-10 | 2018-03-16 | 深圳汉阳天线设计有限公司 | A kind of mobile phone metallic plate radiating antenna of annular resonant structure |
| CN107808993B (en) * | 2017-11-10 | 2024-01-19 | 深圳汉阳天线设计有限公司 | Mobile phone metal plate radiation antenna with annular resonance structure |
| CN108039584A (en) * | 2017-12-01 | 2018-05-15 | 广东欧珀移动通信有限公司 | Antenna module and electronic equipment |
| CN108039584B (en) * | 2017-12-01 | 2021-01-08 | Oppo广东移动通信有限公司 | Antenna assembly and electronic equipment |
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| Publication number | Publication date |
|---|---|
| CN103928761B (en) | 2018-02-02 |
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Owner name: SHENZHEN HANYANG ANTENNA DESIGN CO., LTD. Effective date: 20150108 |
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Free format text: CORRECT: ADDRESS; FROM: 266000 QINGDAO, SHANDONG PROVINCE TO: 518000 SHENZHEN, GUANGDONG PROVINCE |
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Effective date of registration: 20150108 Address after: 518000 Guangdong city of Shenzhen province Nanshan District high tech Zone Technology in two Road No. 39 Wanji Industrial Park W403-1 Applicant after: Hanyang Shenzhen Antenna Design Co., Ltd. Address before: Shandong Province, Qingdao City, 266000 West Road No. 83 four unit 202 Wu Applicant before: Liu Yang |
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Effective date of registration: 20180115 Address after: 266000 Shandong province Qingdao City Huayang Road No. 42 41 Applicant after: Liu Yang Address before: 518000 Guangdong city of Shenzhen province Nanshan District high tech Zone Technology in two Road No. 39 Wanji Industrial Park W403-1 Applicant before: Hanyang Shenzhen Antenna Design Co., Ltd. |
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