CN203733941U - Wide-band antenna of resonance type feeding structure - Google Patents
Wide-band antenna of resonance type feeding structure Download PDFInfo
- Publication number
- CN203733941U CN203733941U CN201320895544.XU CN201320895544U CN203733941U CN 203733941 U CN203733941 U CN 203733941U CN 201320895544 U CN201320895544 U CN 201320895544U CN 203733941 U CN203733941 U CN 203733941U
- Authority
- CN
- China
- Prior art keywords
- resonant circuit
- branch
- resonant
- capacitor
- inductor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/38—Impedance-matching networks
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
- H01Q5/335—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors at the feed, e.g. for impedance matching
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Details Of Aerials (AREA)
- Support Of Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The utility model provides a wide-band antenna of a resonance type feeding structure. The wide-band antenna comprises an antenna element, a resonant circuit, a grounding circuit and a connecting circuit; the antenna element is connected with the grounding circuit through the connecting circuit; the antenna element is connected with the feeding circuit through the resonant circuit and the connecting circuit; and the resonant circuit comprises a first branch resonant circuit and a second branch resonant circuit which are in parallel connection, the first branch resonant circuit and the grounding circuit form a first resonant mode, and the second branch resonant circuit and the grounding circuit form a second resonant mode. The wide-band antenna of the resonance type feeding structure is simple in structure, bandwidth and efficiency are improved, and miniaturization of the antenna element is achieved.
Description
Technical field
The utility model relates to mobile communication antenna field, particularly a kind of resonant feed structure broad-band antenna.
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 an antenna can cover the extremely market favor of characteristic of multiple communications bands simultaneously.But for meeting the requirement that modern mobile phone is 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 broadband index of antenna.
As shown in Figure 1, existing antenna for mobile phone comprises: antenna element 1, connection line, ground path 3 and feeder line 4, antenna element 1 is connected to ground path 3 and feeder line 4 by connection line, for cover multiple communications bands simultaneously, antenna element 1 is also connected to earth potential, is connected to earth potential by capacitor 6 by capacitor 5, capacitor 5 and ground path 3 form low-frequency resonance mould, improve the broadband character of antenna element 1 in low-frequency range, capacitor 6 and ground path 3 form high-frequency resonance mould, improve the broadband character of antenna element 1 at high band.
Low-frequency resonance mould in Fig. 1 is made up of capacitor 5 and ground path 3, high-frequency resonance mould is made up of capacitor 6 and ground path 3, the limited bandwidth that the low-frequency resonance mould of the antenna for mobile phone of this parallel feed structure and high-frequency resonance mould improve, and efficiency is low, cannot realize the miniaturization of antenna element.
Utility model content
The utility model proposes a kind of resonant feed structure broad-band antenna, solved the low and bulky problem of antenna element of existing antenna for mobile phone limited bandwidth, efficiency.
The technical solution of the utility model is achieved in that
A kind of resonant feed structure broad-band antenna, comprise: antenna element, resonant circuit, ground path and connection line, described antenna element is connected with described ground path by connection line, and described antenna element is connected with feeder line with connection line by resonant circuit;
Described resonant circuit comprises the first branch's resonant circuit and the second branch's resonant circuit that are connected in parallel, and first branch's resonant circuit and described ground path form the first mode of resonance, and second branch's resonant circuit and described ground path form the second mode of resonance.
Alternatively, described first branch's resonant circuit comprises the first capacitor and the first inductor that are connected in series, and described second branch's resonant circuit comprises the second capacitor and the second inductor that are connected in series.
Alternatively, described first branch's resonant circuit comprises the first capacitor and the first inductor that are connected in series, and described second branch's resonant circuit is connection line.
Alternatively, described first branch's resonant circuit comprises the first capacitor and the first inductor that are connected in series, and described second branch's resonant circuit comprises the second capacitor.
Alternatively, described first branch's resonant circuit comprises the first capacitor and the first inductor that are connected in series, and second branch's resonant circuit comprises the second inductor.
Alternatively, described first branch's resonant circuit comprises the first capacitor, and second branch's resonant circuit comprises the second capacitor and the second inductor that are connected in series.
Alternatively, described first branch's resonant circuit comprises the first inductor, and second branch's resonant circuit comprises the second capacitor and the second inductor that are connected in series.
Alternatively, described first branch's resonant circuit is connection line, and second branch's resonant circuit comprises the second capacitor and the second inductor that are connected in series.
Alternatively, at grade, described antenna element place plane is higher than resonant circuit and feeder line place plane for described resonant circuit and feeder line.
Alternatively, described antenna element and resonant circuit and feeder line are positioned at same plane.
Alternatively, resonant feed structure broad-band antenna of the present utility model, is also included in the resonant circuit of multiple parallel connections of different frequency range resonance.
The beneficial effects of the utility model are:
(1) antenna element structure is simple;
(2) improve the broadband performance of antenna element in low-frequency range by first branch's resonant circuit, improve the broadband performance of antenna element at high band by second branch's resonant circuit, improved bandwidth and efficiency;
(3) realized the miniaturization of antenna element.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment 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 embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the circuit diagram of existing broad-band antenna;
Fig. 2 is the circuit block diagram of a kind of resonant feed structure broad-band antenna of the utility model;
Fig. 3 is the circuit diagram of the resonant feed structure broad-band antenna of the utility model embodiment mono-;
Fig. 4 is the circuit diagram of the resonant feed structure broad-band antenna of the utility model embodiment bis-;
Fig. 5 is the circuit diagram of the resonant feed structure broad-band antenna of the utility model embodiment tri-;
Fig. 6 is the circuit diagram of the resonant feed structure broad-band antenna of the utility model embodiment tetra-;
Fig. 7 is the circuit diagram of the resonant feed structure broad-band antenna of the utility model embodiment five;
Fig. 8 is the circuit diagram of the resonant feed structure broad-band antenna of the utility model embodiment six;
Fig. 9 is the circuit diagram of the resonant feed structure broad-band antenna of the utility model embodiment seven.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Its low-frequency resonance mould of existing antenna for mobile phone and high-frequency resonance mould are realized by capacitor and ground path, and this parallel resonant circuit cannot be realized the miniaturization of antenna element, and efficiency is low, limited bandwidth.
The utility model proposes a kind of resonant feed structure broad-band antenna, realize the covering of multiple communication bands by the resonant circuit coupling with antenna element and ground path, improved bandwidth and efficiency, realized the miniaturization of antenna element.
As shown in Figure 2, resonant feed structure broad-band antenna of the present utility model, comprise: antenna element 1, resonant circuit 2, ground path 3 and connection line, antenna element 1 is connected with ground path 3 by connection line, and antenna element 1 is connected with feeder line 4 with connection line by resonant circuit 2.Resonant circuit 2 comprises the first branch's resonant circuit 10 and the second branch's resonant circuit 20 that are connected in parallel, first branch's resonant circuit 10 and ground path 3 form the first mode of resonance, second branch's resonant circuit 20 and ground path 3 form the second mode of resonance, the first mode of resonance improves the bandwidth performance of antenna element in low-frequency range, and the second mode of resonance improves the bandwidth performance of antenna element at high band.
First branch's resonant circuit 10 can comprise inductor, or capacitor, or the combination of inductor and capacitor, or connection line.Second branch's resonant circuit 20 can comprise inductor, or capacitor, or the combination of inductor and capacitor, or connection line.
Ground path 3 in Fig. 2 is only that schematically ground path 3 can be connection line, can also comprise the combination of capacitor or inductor or capacitor and inductor.
Below by specific embodiment, resonant feed structure broad-band antenna of the present utility model is elaborated.
Embodiment mono-
As shown in Figure 3, the resonant feed structure broad-band antenna of the one of the utility model embodiment mono-, first branch's resonant circuit 10 comprises the first capacitor C being connected in series
lwith the first inductor L
l, second branch's resonant circuit 20 comprises the second capacitor C being connected in series
hwith the second inductor L
h, other parts of antenna circuit are identical with antenna circuit shown in Fig. 2.The span of low-frequency range bandwidth is by changing the first capacitor C
lwith the first inductor L
ldebug, the span of high band bandwidth is by changing the second capacitor C
hwith the second inductor L
hdebug.
Embodiment bis-
As shown in Figure 4, the resonant feed structure broad-band antenna of the one of the utility model embodiment bis-, first branch's resonant circuit 10 comprises the first capacitor C being connected in series
lwith the first inductor L
l, second branch's resonant circuit 20 is connection line, other parts of antenna circuit are identical with antenna circuit shown in Fig. 2.The span of low-frequency range bandwidth is by changing the first capacitor C
lwith the first inductor L
ldebug, high band bandwidth is determined by connection line.
Embodiment tri-
As shown in Figure 5, the resonant feed structure broad-band antenna of the one of the utility model embodiment tri-, first branch's resonant circuit 10 comprises the first capacitor C being connected in series
lwith the first inductor L
l, second branch's resonant circuit 20 comprises the second capacitor C
h, other parts of antenna circuit are identical with antenna circuit shown in Fig. 2.The span of low-frequency range bandwidth is by changing the first capacitor C
lwith the first inductor L
ldebug, the span of high band bandwidth is by changing the second capacitor C
hdebug.
Embodiment tetra-
As shown in Figure 6, the resonant feed structure broad-band antenna of the one of the utility model embodiment tetra-, first branch's resonant circuit 10 comprises the first capacitor C being connected in series
lwith the first inductor L
l, second branch's resonant circuit 20 comprises the second inductor L
h, other parts of antenna circuit are identical with antenna circuit shown in Fig. 2.The span of low-frequency range bandwidth is by changing the first capacitor C
lwith the first inductor L
ldebug, the span of high band bandwidth is by changing the second inductor L
hdebug.
Embodiment five
As shown in Figure 7, the resonant feed structure broad-band antenna of the one of the utility model embodiment five, first branch's resonant circuit 10 comprises the first capacitor C
l, second branch's resonant circuit 20 comprises the second capacitor C being connected in series
hwith the second inductor L
h, other parts of antenna circuit are identical with antenna circuit shown in Fig. 2.The span of low-frequency range bandwidth is by changing the first capacitor C
ldebug, the span of high band bandwidth is by changing the second capacitor C
hwith the second inductor L
hdebug.
Embodiment six
As shown in Figure 8, the resonant feed structure broad-band antenna of the one of the utility model embodiment six, first branch's resonant circuit 10 comprises the first inductor L
l, second branch's resonant circuit 20 comprises the second capacitor C being connected in series
hwith the second inductor L
h, other parts of antenna circuit are identical with antenna circuit shown in Fig. 2.The span of low-frequency range bandwidth is by changing the first inductor L
ldebug, the span of high band bandwidth is by changing the second capacitor C
hwith the second inductor L
hdebug.
Embodiment seven
As shown in Figure 9, the resonant feed structure broad-band antenna of the one of the utility model embodiment seven, first branch's resonant circuit 10 is connection line, second branch's resonant circuit 20 comprises the second capacitor C being connected in series
hwith the second inductor L
h, other parts of antenna circuit are identical with antenna circuit shown in Fig. 2.Low-frequency range bandwidth determines by connection line, and the span of high band bandwidth is by changing the second capacitor C
hwith the second inductor L
hdebug.
Above-described embodiment one to seven is preferred embodiment, and those skilled in the art can also carry out the combination of other modes to first branch's resonant circuit 10 and second branch's resonant circuit 20 according to instruction of the present utility model, repeat no more here.
In above-described embodiment one to seven, first branch's resonant circuit 10 and second branch's resonant circuit 20 are connected in parallel and couple with antenna element and ground path, first branch's resonant circuit 10 and ground path 3 form the first mode of resonance, second branch's resonant circuit 20 and ground path 3 form the second mode of resonance, the mode of resonance being made up of capacitor, inductor and ground path can effectively improve bandwidth, and, can realize the miniaturization of antenna element according to feed circuit of the present utility model.
The antenna circuit layout space of above-mentioned all embodiment distributes, and at grade, preferably, resonant circuit 2 and feeder line 4 coexist on mobile phone circuit board plane for resonant circuit 2 and feeder line 4.Antenna element 1 and resonant circuit 2 and feeder line 4 can be at grade, or antenna element 1 place plane is higher than resonant circuit 2 and feeder line 4 place planes.
In above-mentioned all embodiment, the position of connection line can, according to the requirement of antenna index, connect at any point of antenna element.
The resonant circuit of resonant feed structure broad-band antenna of the present utility model comprises first branch's resonant circuit and second branch's resonant circuit, to improve the bandwidth of antenna circuit low-frequency range and high band, certainly, those skilled in the art are according to instruction of the present utility model, can also improve resonant circuit, resonant circuit can also comprise the branch's resonant circuit being more connected in parallel, to improve the bandwidth in corresponding band.
Resonant feed structure broad-band antenna circuit structure of the present utility model is simple, improve the broadband performance of antenna element in low-frequency range by first branch's resonant circuit, improve the broadband performance of antenna element at high band by second branch's resonant circuit, improve bandwidth and efficiency, realized the miniaturization of antenna element simultaneously.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (11)
1. a resonant feed structure broad-band antenna, it is characterized in that, comprise: antenna element, resonant circuit, ground path and connection line, described antenna element is connected with described ground path by connection line, and described antenna element is connected with feeder line with connection line by resonant circuit;
Described resonant circuit comprises the first branch's resonant circuit and the second branch's resonant circuit that are connected in parallel, and first branch's resonant circuit and described ground path form the first mode of resonance, and second branch's resonant circuit and described ground path form the second mode of resonance.
2. resonant feed structure broad-band antenna as claimed in claim 1, it is characterized in that, described first branch's resonant circuit comprises the first capacitor and the first inductor that are connected in series, and described second branch's resonant circuit comprises the second capacitor and the second inductor that are connected in series.
3. resonant feed structure broad-band antenna as claimed in claim 1, is characterized in that, described first branch's resonant circuit comprises the first capacitor and the first inductor that are connected in series, and described second branch's resonant circuit is connection line.
4. resonant feed structure broad-band antenna as claimed in claim 1, is characterized in that, described first branch's resonant circuit comprises the first capacitor and the first inductor that are connected in series, and described second branch's resonant circuit comprises the second capacitor.
5. resonant feed structure broad-band antenna as claimed in claim 1, is characterized in that, described first branch's resonant circuit comprises the first capacitor and the first inductor that are connected in series, and described second branch's resonant circuit comprises the second inductor.
6. resonant feed structure broad-band antenna as claimed in claim 1, is characterized in that, described first branch's resonant circuit comprises the first capacitor, and described second branch's resonant circuit comprises the second capacitor and the second inductor that are connected in series.
7. resonant feed structure broad-band antenna as claimed in claim 1, is characterized in that, described first branch's resonant circuit comprises the first inductor, and described second branch's resonant circuit comprises the second capacitor and the second inductor that are connected in series.
8. resonant feed structure broad-band antenna as claimed in claim 1, is characterized in that, described first branch's resonant circuit is connection line, and described second branch's resonant circuit comprises the second capacitor and the second inductor that are connected in series.
9. the resonant feed structure broad-band antenna as described in claim 1 to 8 any one, is characterized in that, at grade, described antenna element place plane is higher than resonant circuit and feeder line place plane for described resonant circuit and feeder line.
10. the resonant feed structure broad-band antenna as described in claim 1 to 8 any one, is characterized in that, described antenna element and resonant circuit and feeder line are positioned at same plane.
11. resonant feed structure broad-band antennas as claimed in claim 1, is characterized in that, are also included in the resonant circuit of multiple parallel connections of different frequency range resonance.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320895544.XU CN203733941U (en) | 2013-12-26 | 2013-12-26 | Wide-band antenna of resonance type feeding structure |
| KR1020167003880A KR20160031545A (en) | 2013-12-26 | 2014-12-19 | Resonant feed structured wideband antenna |
| PCT/CN2014/094412 WO2015096670A1 (en) | 2013-12-26 | 2014-12-19 | Resonant feed structured wideband antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320895544.XU CN203733941U (en) | 2013-12-26 | 2013-12-26 | Wide-band antenna of resonance type feeding structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203733941U true CN203733941U (en) | 2014-07-23 |
Family
ID=51203988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320895544.XU Expired - Fee Related CN203733941U (en) | 2013-12-26 | 2013-12-26 | Wide-band antenna of resonance type feeding structure |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR20160031545A (en) |
| CN (1) | CN203733941U (en) |
| WO (1) | WO2015096670A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715510A (en) * | 2013-12-29 | 2014-04-09 | 刘扬 | Resonance type feeding structure wide-band antenna |
| WO2015096670A1 (en) * | 2013-12-26 | 2015-07-02 | 刘扬 | Resonant feed structured wideband antenna |
| CN105742818A (en) * | 2016-03-25 | 2016-07-06 | 联想(北京)有限公司 | Antenna and control method |
| CN107275804A (en) * | 2016-04-08 | 2017-10-20 | 康普技术有限责任公司 | Remove common mode resonance（CMR）And differential mode resonant（DMR）Multiband antenna array |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5874926A (en) * | 1996-03-11 | 1999-02-23 | Murata Mfg Co. Ltd | Matching circuit and antenna apparatus |
| JP2009278192A (en) * | 2008-05-12 | 2009-11-26 | Sony Ericsson Mobilecommunications Japan Inc | Antenna device and communication terminal |
| JP5234094B2 (en) * | 2010-12-02 | 2013-07-10 | Ｔｄｋ株式会社 | Antenna device |
| CN203733941U (en) * | 2013-12-26 | 2014-07-23 | 刘扬 | Wide-band antenna of resonance type feeding structure |
-
2013
- 2013-12-26 CN CN201320895544.XU patent/CN203733941U/en not_active Expired - Fee Related
-
2014
- 2014-12-19 KR KR1020167003880A patent/KR20160031545A/en not_active Application Discontinuation
- 2014-12-19 WO PCT/CN2014/094412 patent/WO2015096670A1/en active Application Filing
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015096670A1 (en) * | 2013-12-26 | 2015-07-02 | 刘扬 | Resonant feed structured wideband antenna |
| CN103715510A (en) * | 2013-12-29 | 2014-04-09 | 刘扬 | Resonance type feeding structure wide-band antenna |
| CN105742818A (en) * | 2016-03-25 | 2016-07-06 | 联想(北京)有限公司 | Antenna and control method |
| CN107275804A (en) * | 2016-04-08 | 2017-10-20 | 康普技术有限责任公司 | Remove common mode resonance（CMR）And differential mode resonant（DMR）Multiband antenna array |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015096670A1 (en) | 2015-07-02 |
| KR20160031545A (en) | 2016-03-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140723 Termination date: 20211226 |