CN105305067A - Antenna system and mobile terminal - Google Patents
Antenna system and mobile terminal Download PDFInfo
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- CN105305067A CN105305067A CN201510732435.XA CN201510732435A CN105305067A CN 105305067 A CN105305067 A CN 105305067A CN 201510732435 A CN201510732435 A CN 201510732435A CN 105305067 A CN105305067 A CN 105305067A
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- 239000002184 metal Substances 0.000 claims abstract description 116
- 239000003990 capacitor Substances 0.000 claims description 15
- 239000007769 metal material Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 description 7
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
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Abstract
The invention provides an antenna system and a mobile terminal, and relates to the technical field of antennas. The antenna system is applied to a mobile terminal, and includes: a first metal arm and a second metal arranged on two end parts of a frame of one side edge of the mobile terminal; and a third metal arm arranged on the frame of the side edge and located between the first metal arm and the second metal arm. A first opening is arranged between the third metal arm and the first metal arm, and a second opening is arranged between the third metal arm and the second metal arm; a first end of the third metal arm is connected to the ground through a radio frequency front end matching circuit; and a second end of the third metal arm is connected to the ground through a first antenna matching circuit. The scheme of the invention solves the problem of poor antenna signal quality when mobile terminals at present use metal structures, realizes antenna signals of higher quality, and tuning is easy.
Description
Technical Field
The present invention relates to the field of antenna technologies, and in particular, to an antenna system and a mobile terminal.
Background
As mobile terminals have been developed and their functions have become more complicated, the internal layout of the corresponding mobile terminal has become more compact.
However, it is well known that the antenna system, as an important component of the mobile terminal, needs to avoid possible influence between the antenna system and surrounding structures, which affects the antenna signal and degrades the user experience. Especially, the metal-textured mobile terminal which is liked by people recently can lead to poor antenna signal quality and reduce user experience due to more adoption of metal structures such as metal frames in the mobile terminal.
Disclosure of Invention
The invention provides an antenna system and a mobile terminal, which are used for solving the problem of poor antenna signal quality when the existing mobile terminal uses a metal structure.
To solve the above problem, an embodiment of the present invention provides an antenna system applied to a mobile terminal, including:
the first metal arm and the second metal arm are arranged at two end parts of a frame at one side of the mobile terminal;
the third metal arm is arranged on the side frame and is positioned between the first metal arm and the second metal arm; wherein,
a first opening is arranged between the third metal arm and the first metal arm, and a second opening is arranged between the third metal arm and the second metal arm;
the first end of the third metal arm is grounded through a radio frequency front end matching circuit; the second end of the third metal arm is grounded through a first antenna matching circuit.
In order to solve the above problem, an embodiment of the present invention further provides a mobile terminal including the antenna system as described above.
The technical scheme of the invention has the following beneficial effects:
according to the embodiment of the invention, the first metal arm, the second metal arm and the third metal arm are all arranged on the side frame of the mobile terminal, the first end of the third metal arm is grounded through the radio frequency front end matching circuit, the second end of the third metal arm is grounded through the first antenna matching circuit, the third metal arm generates low-frequency resonance and high-frequency secondary resonance, and the first metal arm and the second metal arm generate high-frequency resonance, so that the high-frequency bandwidth is expanded. The antenna system in the embodiment is arranged on the side frame, so that the influence of other electronic devices on the antenna system is reduced, the antenna signal quality is improved, and the resonant frequency can be adjusted by adjusting the element value in the first antenna matching circuit due to the fact that the first antenna matching circuit is grounded, the length of the metal arm does not need to be modified, and tuning is more convenient and faster.
Drawings
Fig. 1 is a schematic structural diagram of an antenna system according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of an antenna system according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of an antenna system according to a third embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides an antenna system aiming at the problems of poor antenna signal quality and reduced user experience in the existing mobile terminal, realizes a better antenna signal and is easy to tune.
First embodiment
As shown in fig. 1, an antenna system according to a first embodiment of the present invention is applied to a mobile terminal, and includes: a first metal arm 101 and a second metal arm 102 which are arranged at two end parts of a frame at one side of the mobile terminal; a third metal arm 103 disposed on the side frame and located between the first metal arm 101 and the second metal arm 102; a first opening is arranged between the third metal arm 103 and the first metal arm 101, and a second opening is arranged between the third metal arm 103 and the second metal arm 102; the first end of the third metal arm 103 is grounded through a radio frequency front end matching circuit 104; the second end of the third metal arm 103 is grounded through a first antenna matching circuit 105.
In this embodiment, the first metal arm 101, the second metal arm 102, and the third metal arm 103 are all disposed on a side frame of the mobile terminal, a first end of the third metal arm 103 is grounded through the rf front-end matching circuit 104, a second end of the third metal arm 103 is grounded through the first antenna matching circuit 105, the third metal arm 103 generates a low-frequency resonance and a high-frequency secondary resonance, and the first metal arm 101 and the second metal arm 102 generate a high-frequency resonance, which expands a bandwidth of a high frequency. The low-frequency resonance is mainly realized by a first matching circuit, a third metal arm and a radio frequency front end matching circuit, and the high-frequency resonance is mainly realized by the spatial coupling of the first (second) metal arm, the third metal arm and the radio frequency front end matching circuit.
The antenna system in this embodiment is disposed on the side frame, so that the influence of other electronic devices on the antenna system is reduced, and the quality of antenna signals is improved.
Preferably, the length of the first metal arm is smaller than that of the third metal arm, and the length of the second metal arm is also smaller than that of the third metal arm.
As shown in fig. 1, the radio frequency front end matching circuit 104 includes a feed source 1041 and a radio frequency matching circuit 1042, a first end of the feed source 1041 is grounded, a second end of the feed source 1041 is connected to the first end of the radio frequency matching circuit 1042, and a second end of the radio frequency matching circuit 1042 is connected to the third metal arm 103.
The radio frequency matching circuit can be complex matching formed by an inductor and an inductor capacitor.
Preferably, the first antenna matching circuit 105 is a matching circuit formed by lumped elements.
The first antenna matching circuit 105 may be configured by a lumped element in combination with a distributed element or by using only a distributed element.
In this embodiment, as shown in fig. 1, the device grounding in the antenna system can be implemented by a grounding portion 106 connected to the mobile terminal, and the grounding portion can be a main board or a metal middle frame, and of course, can also be implemented by other suitable structural devices in the mobile terminal, which is not listed here.
Second embodiment
As shown in fig. 2, an antenna system according to a second embodiment of the present invention is applied to a mobile terminal, and includes: one end of the first metal arm 101 close to the third metal arm 103 is grounded through a second antenna matching circuit 201; one end of the second metal arm 102 close to the third metal arm 103 is grounded through a third antenna matching circuit 202.
In the antenna system in this embodiment, one end of the first metal arm 101 close to the third metal arm 103 is grounded through the second antenna matching circuit 201, one end of the second metal arm 102 close to the third metal arm 103 is grounded through the third antenna matching circuit 202, and matching values are changed through the second antenna matching circuit 201 and the third antenna matching circuit 202, so that high-frequency adjustment can be performed.
Specifically, as shown in fig. 2, the second antenna matching circuit 201 includes a first capacitor and a first inductor, a first end of the first capacitor is grounded, a second end of the first capacitor is connected to a first end of the first inductor, and a second end of the first inductor is connected to the first metal arm 101.
Specifically, as shown in fig. 2, the third antenna matching circuit 202 includes a second capacitor and a second inductor, a first end of the second capacitor is grounded, a second end of the second capacitor is connected to a first end of the second inductor, and a second end of the second inductor is connected to the second metal arm 102.
It should be understood, of course, that the second antenna matching circuit 201 and the third antenna matching circuit 202 shown in fig. 2 are only a preferred implementation manner, and may also be implemented by other circuit structures, such as a long and thin trace and a coupling sheet, where the equivalent inductance of the long and thin trace is generally between 0.5 nH and 47nH, and the coupling sheet is between 0.1pF and 8.2pF, and may be optimized according to practical situations, and are not listed herein. The radio frequency matching circuit can also be realized by a long and thin wire capacitor or a coupling sheet.
Other technical features of this embodiment are the same as those of the first embodiment, and are not described herein.
Third embodiment
As shown in fig. 3, an antenna system according to a third embodiment of the present invention is applied to a mobile terminal, and the first antenna matching circuit 105 is a matching circuit with a tunable element.
In this embodiment, the first antenna matching circuit 105 is a matching circuit with tunable elements, such as a switch, a variable capacitor, etc., and realizes low-pass and high-impedance, and switching of very low frequency, such as 700MHz, enables high frequency to be unaffected, and generally realizes a bandwidth of 690-960 MHz at low frequency.
Other technical features of this embodiment are the same as those of the first embodiment, and are not described herein.
The antenna systems of the first, second, and third embodiments are applied to a mobile terminal whose frame is made of metal, where the side frame is made of metal material, and the first metal arm 101, the second metal arm 102, and the third metal arm 103 form the side frame. The antenna system can be constructed by directly utilizing the metal frame part, the antenna signal quality and the user experience of the mobile terminal of the metal frame can be effectively improved, and the space is saved.
When the antenna system is applied to a mobile terminal with a non-metal frame, the side frame is made of a non-metal material, and the first metal arm 101, the second metal arm 102 and the third metal arm 103 are bonded to the side frame.
First metal arm 101, second metal arm 102 and third metal arm 103 can be realized through the antenna piece, directly bond it to the side frame on, can ensure the mobile terminal's of metal frame antenna signal quality, promote user and use experience, and save space.
Considering that, in the using process, the user may block the antenna signal when holding the mobile terminal, preferably, the side edge frame is a top edge frame of the mobile terminal.
In addition, the positions of the metal frame breakpoints (the first opening and the second opening) can be freely adjusted on the premise of understanding the intention of the invention, the number of the elongated routing can be increased, the lumped elements can be replaced by complex matching, the connection points of the feed source and the radio frequency matching circuit (tail end routing) on the metal arm can be adjusted, the position of the feed source can be adjusted, and the shape and the length of the elongated routing can be adjusted.
In summary, the antenna system of the embodiment of the present invention can easily debug high and low frequencies, is easy to take into account, can switch the low frequency in a full frequency band, and easily finds an optimal matching position and matching value due to a plurality of adjustment points of the matched antenna, thereby improving the quality of the antenna signal, improving the user experience, and saving the space.
Fourth embodiment
A fourth embodiment of the present invention provides a mobile terminal including the antenna system as described above.
The mobile terminal of the embodiment of the invention has the advantages of simple high-frequency and low-frequency debugging, easy consideration, full-frequency band switching of low frequency, easy finding of the optimal matching position and matching value due to more matching antenna adjusting points, improvement of the antenna signal quality, improvement of the user experience and space saving.
It should be noted that, the mobile terminal includes the above antenna system, and the implementation manner of the above antenna system is applicable to the mobile terminal, and the same technical effect can be achieved.
It is further noted that the mobile terminals described in this specification include, but are not limited to, smart phones, tablets, etc., and that many of the functional components described are referred to as modules in order to more particularly emphasize their implementation independence.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (13)
1. An antenna system applied to a mobile terminal, comprising:
the first metal arm and the second metal arm are arranged at two end parts of a frame at one side of the mobile terminal;
the third metal arm is arranged on the side frame and is positioned between the first metal arm and the second metal arm; wherein,
a first opening is arranged between the third metal arm and the first metal arm, and a second opening is arranged between the third metal arm and the second metal arm;
the first end of the third metal arm is grounded through a radio frequency front end matching circuit; the second end of the third metal arm is grounded through a first antenna matching circuit.
2. The antenna system of claim 1, wherein an end of the first metal arm proximate to the third metal arm is grounded through a second antenna matching circuit.
3. The antenna system of claim 2, wherein an end of the second metal arm proximate to the third metal arm is grounded through a third antenna matching circuit.
4. The antenna system of claim 3, wherein the third antenna matching circuit comprises a second capacitor and a second inductor, a first terminal of the second capacitor is connected to ground, a second terminal of the second capacitor is connected to a first terminal of the second inductor, and a second terminal of the second inductor is connected to the second metal arm.
5. The antenna system of claim 2, wherein the second antenna matching circuit comprises a first capacitor and a first inductor, a first terminal of the first capacitor is connected to ground, a second terminal of the first capacitor is connected to a first terminal of the first inductor, and a second terminal of the first inductor is connected to the first metal arm.
6. The antenna system of claim 1, wherein the rf front-end matching circuit comprises a feed and an rf matching circuit, a first end of the feed is grounded, a second end of the feed is connected to the first end of the rf matching circuit, and a second end of the rf matching circuit is connected to the third metal arm.
7. The antenna system of claim 1, wherein the first antenna matching circuit is a lumped element matching circuit.
8. The antenna system of claim 1, wherein the first antenna matching circuit is a matching circuit having a tunable element.
9. The antenna system of claim 1, wherein the side frame is a metal material, and the first metal arm, the second metal arm, and the third metal arm form the side frame.
10. The antenna system of claim 1, wherein the side frame is a non-metallic material, and wherein the first metal arm, the second metal arm, and the third metal arm are bonded to the side frame.
11. The antenna system of claim 1, wherein the first metal arm is shorter in length than the third metal arm, and wherein the second metal arm is also shorter in length than the third metal arm.
12. The antenna system of claim 1, wherein the side border is a top border of the mobile terminal.
13. A mobile terminal, characterized in that it comprises an antenna system according to any of claims 1 to 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510732435.XA CN105305067B (en) | 2015-10-29 | 2015-10-29 | A kind of antenna system and mobile terminal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510732435.XA CN105305067B (en) | 2015-10-29 | 2015-10-29 | A kind of antenna system and mobile terminal |
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| CN105305067A true CN105305067A (en) | 2016-02-03 |
| CN105305067B CN105305067B (en) | 2016-12-14 |
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| WO2019144810A1 (en) * | 2018-01-25 | 2019-08-01 | 维沃移动通信有限公司 | Antenna assembly, electronic device, and antenna configuration method |
| CN108336472A (en) * | 2018-01-29 | 2018-07-27 | 广东欧珀移动通信有限公司 | A kind of center component, electronic equipment and its assembly method |
| CN108631040A (en) * | 2018-03-28 | 2018-10-09 | 广东欧珀移动通信有限公司 | Electronic device |
| CN108511905A (en) * | 2018-04-19 | 2018-09-07 | Oppo广东移动通信有限公司 | Antenna system and mobile terminal |
| CN108631048A (en) * | 2018-04-20 | 2018-10-09 | Oppo广东移动通信有限公司 | Antenna module and electronic device |
| CN108631048B (en) * | 2018-04-20 | 2020-12-18 | Oppo广东移动通信有限公司 | Antenna assembly and electronic device |
| EP3780270A4 (en) * | 2018-05-15 | 2021-04-21 | Huawei Technologies Co., Ltd. | Antenna system and terminal device |
| US11735809B2 (en) | 2018-05-15 | 2023-08-22 | Huawei Technologies Co., Ltd. | Antenna system and terminal device |
| CN110611154A (en) * | 2018-06-14 | 2019-12-24 | 深圳富泰宏精密工业有限公司 | Antenna structure and wireless communication device with same |
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| US11404790B2 (en) | 2018-07-11 | 2022-08-02 | Huawei Technologies Co., Ltd. | Antenna apparatus and mobile terminal |
| CN109063856A (en) * | 2018-09-04 | 2018-12-21 | 广东电网有限责任公司 | Generate the method and device of safe fence |
| CN111082816A (en) * | 2019-12-20 | 2020-04-28 | 东莞宇龙通信科技有限公司 | Radio frequency front-end circuit and terminal |
| CN111082816B (en) * | 2019-12-20 | 2021-07-20 | 东莞宇龙通信科技有限公司 | Radio frequency front-end circuit and terminal |
| EP4297186A4 (en) * | 2021-03-23 | 2024-08-14 | Huawei Tech Co Ltd | Electronic device |
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