CN204407514U - Based on the antenna for mobile phone of adjustable match circuit - Google Patents
Based on the antenna for mobile phone of adjustable match circuit Download PDFInfo
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- CN204407514U CN204407514U CN201520142212.3U CN201520142212U CN204407514U CN 204407514 U CN204407514 U CN 204407514U CN 201520142212 U CN201520142212 U CN 201520142212U CN 204407514 U CN204407514 U CN 204407514U
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- 230000008054 signal transmission Effects 0.000 claims abstract description 5
- 239000003990 capacitor Substances 0.000 claims description 17
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
The utility model discloses a kind of antenna for mobile phone based on adjustable match circuit, comprise antenna body and match circuit, described match circuit is connected between described antenna body and antenna for mobile phone Signal transmissions end, described match circuit comprises the first lump switching circuit be connected in series with described antenna body and the second lump switching circuit be connected in parallel with described antenna body, described first lump switching circuit and the second lump switching circuit comprise respectively at least two branch circuits with for switching the switch being connected described branch circuit, described branch circuit is made up of at least one lamped element.Compared with prior art, first lump switching circuit described in the utility model and the second lump switching circuit can connect different branch circuits according to actual needs, and the value of the lamped element in different branch circuit can be changed, thus regulate the resonance frequency of antenna body, expand the bandwidth of operation of antenna body.
Description
Technical field
The utility model relates to field of wireless communication, particularly relates to a kind of antenna for mobile phone based on adjustable match circuit.
Background technology
The match circuit of antenna body comprises the circuit of impedance matching circuit and other matching way, and this match circuit is conducive to the Lossless transport of signal.In the ideal situation, can by the Lossless transport regulating antenna to reach signal.But due to the environment of mobile phone itself, the restriction in space, often can not meet the demands only by adjustment antenna, therefore, carry out impedance matching fast and effectively very necessary, this just needs for antenna body arranges impedance matching circuit.
Impedance matching circuit can make signal input power effectively output to antenna, thus in target band, obtain corresponding standing-wave ratio; And the matching network of mismatch, signal input power can be caused to be reflected back antenna for mobile phone Signal transmissions end, to cause system performance degradation.Standing-wave ratio is a numerical value, is used for representing whether Antenna+Transmitter mates.Standing wave ratio is lower, and matching performance is better, otherwise matching performance is poorer.
Existing impedance matching circuit can not flexible, and the resonance frequency of antenna immobilizes substantially, causes the bandwidth of operation of antenna less, can not satisfy the demands.
Therefore, be necessary to provide a kind of new antenna body to solve the problems referred to above.
Utility model content
The purpose of this utility model is to provide a kind of antenna for mobile phone based on adjustable match circuit that can change antenna body resonance frequency, expand antenna body bandwidth of operation.
To achieve these goals, the technical scheme that adopts of the utility model is as follows:
A kind of antenna for mobile phone based on adjustable match circuit, comprise antenna body and match circuit, described match circuit is connected between described antenna body and antenna for mobile phone Signal transmissions end, described match circuit comprises the first lump switching circuit be connected in series with described antenna body and the second lump switching circuit be connected in parallel with described antenna body, described first lump switching circuit and the second lump switching circuit comprise respectively at least two branch circuits with for switching the switch being connected described branch circuit, described branch circuit is made up of at least one lamped element.
Preferably, described lamped element is electric capacity or inductance.
Preferably, described electric capacity is tunable capacitor, and described inductance is controllable impedance.
Preferably, the first branch circuit of described first lump switching circuit comprises electric capacity, and the second branch circuit comprises inductance.
Preferably, the first branch circuit of described second lump switching circuit comprises electric capacity, and the second branch circuit comprises inductance.
Compared with prior art, the utility model is based on the beneficial effect of the antenna for mobile phone of adjustable match circuit: described first lump switching circuit and the second lump switching circuit can connect different branch circuits according to actual needs, and the value of the lamped element in different branch circuit can be changed, thus regulate the resonance frequency of antenna body, expand the bandwidth of operation of antenna body.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of the utility model based on the antenna for mobile phone of adjustable match circuit;
Fig. 2 is the electrical block diagram of the utility model based on antenna for mobile phone one preferred embodiment of adjustable match circuit;
Fig. 3 is the electrical block diagram of the utility model based on another preferred embodiment of antenna for mobile phone of adjustable match circuit;
Fig. 4 structural representation that to be the utility model based on the antenna for mobile phone of adjustable match circuit be arranged on pcb board;
Fig. 5 is the contour structures schematic diagram of antenna body one described in the utility model preferred embodiment;
Fig. 6 is return loss plot;
Fig. 7 is the reduced graph of Fig. 6.
In figure, each mark is as follows: 1, antenna body; 2, antenna holder; 3, headroom district; 4, pcb board; K1 (K2), switch; L1, the first controllable impedance; L2, the second controllable impedance; C1, the first tunable capacitor; C2, the second tunable capacitor.
Embodiment
Below in conjunction with specific embodiment, the utility model is described further.
Refer to shown in Fig. 1 to Fig. 7, the utility model comprises antenna body 1 and match circuit based on the antenna for mobile phone of adjustable match circuit, described match circuit is connected between described antenna body 1 and antenna for mobile phone Signal transmissions end, described match circuit comprises the first lump switching circuit be connected in series with described antenna body 1 and the second lump switching circuit be connected in parallel with described antenna body 1, described first lump switching circuit and the second lump switching circuit comprise respectively at least two branch circuits with for switching the K switch 1 (K2) being connected described branch circuit, described branch circuit is made up of at least one lamped element, described lamped element is electric capacity or inductance.
In addition, as shown in Figure 4, wherein, the long 120mm of pcb board 4, wide 60mm, thickness is 1mm in the application of antenna body 1 on pcb board 4.Described pcb board 4 is provided with headroom district 3 and antenna holder 2, antenna holder 2 is provided with antenna body 1.
As shown in Figure 5, described antenna body 1 width is 1mm ~ 2mm to antenna body 1 of the present invention, and most long portion is divided into 50mm, is a cabling, only carries out low frequency 824MHz ~ 960MHz frequency range.In figure, antenna length between P1 and P2 point is 50mm, width is 1mm, antenna length between distance headroom district 3 top 2mm, P3 and P4 point is 43mm, and width is 1mm, distance headroom district 3 top 6mm, antenna length between P5 and P6 point is 4mm, and width is 2mm, distance headroom district 3 rightmost side P7 point 8mm.
In order to any position that the resonance frequency shift of described antenna body 1 is needed to us, the utility model employing arranges tunable capacitor in branch's branch road and controllable impedance solves, described tunable capacitor can change the capacitance of place in circuit, and described controllable impedance can change the inductance value of place in circuit.First branch circuit of described first lump switching circuit comprises the first tunable capacitor C1, and the second branch circuit comprises the first controllable impedance L1.First branch circuit of described second lump switching circuit comprises the second tunable capacitor C2, and the second branch circuit comprises the second controllable impedance L2.
When its second branch circuit (i.e. the first controllable impedance L1) connected by described first lump switching circuit, its first branch circuit (i.e. the second tunable capacitor C2) connected by second lump switching circuit, as shown in Figure 2, to described first controllable impedance L1 and the second tunable capacitor C2, three groups of different values are set, corresponding return loss plot respectively as shown in the lines a in Fig. 6, lines b and lines c, when its first branch circuit (i.e. the first tunable capacitor C1) connected by described first lump switching circuit, its second branch circuit (i.e. the second controllable impedance L2) connected by second lump switching circuit, as shown in Figure 3, to described first tunable capacitor C1 and the second controllable impedance L2, two groups of different values are set, corresponding return loss plot is as shown in the lines d in Fig. 6 and lines e, wherein, abscissa in Fig. 6 is frequency, unit is GHz, ordinate is decibel, unit is dB, as can be seen from Figure, under different couplings, oscillogram has carried out translation in various degree from left to right.Element value in Fig. 6 corresponding to different lines is respectively:
The value of lines a: the first controllable impedance L1 is 10.7nH, and the value of the second tunable capacitor C2 is 3.2pF;
The value of lines b: the first controllable impedance L1 is 8.1nH, and the value of the second tunable capacitor C2 is 3.2pF;
The value of lines c: the first controllable impedance L1 is 6nH, and the value of the second tunable capacitor C2 is 2.6pF;
The value of lines d: the first tunable capacitor C1 is 11.5pF, and the value of the second controllable impedance L2 is 8.1nH;
The value of lines e: the first tunable capacitor C1 is 6.2pF, and the value of the second controllable impedance L2 is 8.1nH.
Have chosen three frequencies in Fig. 6 and low frequency frequency range is divided into three sections, each frequency is respectively 824MHz, 880MHz, 960MHz, and corresponding frequency/sound shellfish coordinate is respectively:
Lines a: coordinate 1, (0.824 ,-12.33); Coordinate 2, (0.88 ,-5.6763); Coordinate 3, (0.96 ,-1.7462);
Lines b, coordinate 13, (0.824 ,-8.5073); Coordinate 14, (0.88 ,-12.349); Coordinate 15, (0.96 ,-2.9207).
Lines c, coordinate 10, (0.824 ,-5.465); Coordinate 11, (0.88 ,-13.05); Coordinate 12, (0.96 ,-5.4762);
Lines d, coordinate 4, (0.824 ,-5.937); Coordinate 5, (0.88 ,-16.725); Coordinate 6, (0.96 ,-6.0916);
Lines e, coordinate 7, (0.824 ,-3.3959); Coordinate 8, (0.88 ,-9.5069); Coordinate 9, (0.96 ,-10.371);
As shown in Figure 6, in lines a waveform, 824MHz ~ 880MHz is moved to below-5dB, and in lines d waveform, 824MHz ~ 960MHz moves to ideal position, and in lines e waveform, 880MHz ~ 960MHz is moved to ideal position.
When embody rule, can also increase multiple branches branch road, the capacitance in each branch branch road is different with inductance value, reaches with this object expanding bandwidth of operation.
Schematically above be described the utility model and execution mode thereof, this description does not have restricted, and also just one of the execution mode of the present utility model shown in accompanying drawing, actual structure is not limited thereto.So, if those of ordinary skill in the art enlightens by it, when not departing from the utility model and creating aim, design the frame mode similar to this technical scheme and embodiment without creationary, protection range of the present utility model all should be belonged to.
Claims (5)
1. the antenna for mobile phone based on adjustable match circuit, it is characterized in that: comprise antenna body and match circuit, described match circuit is connected between described antenna body and antenna for mobile phone Signal transmissions end, described match circuit comprises the first lump switching circuit be connected in series with described antenna body and the second lump switching circuit be connected in parallel with described antenna body, described first lump switching circuit and the second lump switching circuit comprise respectively at least two branch circuits with for switching the switch being connected described branch circuit, described branch circuit is made up of at least one lamped element.
2., as claimed in claim 1 based on the antenna for mobile phone of adjustable match circuit, it is characterized in that: described lamped element is electric capacity or inductance.
3., as claimed in claim 2 based on the antenna for mobile phone of adjustable match circuit, it is characterized in that: described electric capacity is tunable capacitor, described inductance is controllable impedance.
4., as claimed in claim 2 based on the antenna for mobile phone of adjustable match circuit, it is characterized in that: the first branch circuit of described first lump switching circuit comprises electric capacity, and the second branch circuit comprises inductance.
5., as claimed in claim 2 based on the antenna for mobile phone of adjustable match circuit, it is characterized in that: the first branch circuit of described second lump switching circuit comprises electric capacity, and the second branch circuit comprises inductance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520142212.3U CN204407514U (en) | 2015-03-13 | 2015-03-13 | Based on the antenna for mobile phone of adjustable match circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520142212.3U CN204407514U (en) | 2015-03-13 | 2015-03-13 | Based on the antenna for mobile phone of adjustable match circuit |
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| Publication Number | Publication Date |
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| CN204407514U true CN204407514U (en) | 2015-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520142212.3U Active CN204407514U (en) | 2015-03-13 | 2015-03-13 | Based on the antenna for mobile phone of adjustable match circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111710957A (en) * | 2020-06-28 | 2020-09-25 | 上海创功通讯技术有限公司 | Adjustable antenna and metal frame terminal equipment |
| CN111725608A (en) * | 2019-03-18 | 2020-09-29 | Oppo广东移动通信有限公司 | Antenna assembly and electronic equipment |
-
2015
- 2015-03-13 CN CN201520142212.3U patent/CN204407514U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111725608A (en) * | 2019-03-18 | 2020-09-29 | Oppo广东移动通信有限公司 | Antenna assembly and electronic equipment |
| CN111725608B (en) * | 2019-03-18 | 2022-01-07 | Oppo广东移动通信有限公司 | Antenna assembly and electronic equipment |
| CN111710957A (en) * | 2020-06-28 | 2020-09-25 | 上海创功通讯技术有限公司 | Adjustable antenna and metal frame terminal equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 215300 Room 009, No. 55, Shengchuang Road, Yushan Town, Kunshan, Suzhou, Jiangsu Province Patentee after: KUNSHAN RUIXIANG XUNTONG COMMUNICATION TECHNOLOGY Co.,Ltd. Country or region after: China Address before: No. 268 Dengyun Road, High tech Zone, Suzhou City, Jiangsu Province, 215000 Patentee before: KUNSHAN RUIXIANG XUNTONG COMMUNICATION TECHNOLOGY Co.,Ltd. Country or region before: China |
|
| CP03 | Change of name, title or address | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Mobile phone antenna based on adjustable matching circuit Granted publication date: 20150617 Pledgee: Bank of China Limited by Share Ltd. Kunshan branch Pledgor: KUNSHAN RUIXIANG XUNTONG COMMUNICATION TECHNOLOGY Co.,Ltd. Registration number: Y2024980015697 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |