CN104425894A - Multifrequency antenna, and mobile communication apparatus with multifrequency antenna - Google Patents
Multifrequency antenna, and mobile communication apparatus with multifrequency antenna Download PDFInfo
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- CN104425894A CN104425894A CN201310367264.6A CN201310367264A CN104425894A CN 104425894 A CN104425894 A CN 104425894A CN 201310367264 A CN201310367264 A CN 201310367264A CN 104425894 A CN104425894 A CN 104425894A
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- radiation
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- ground plane
- multifrequency antenna
- circuit board
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Abstract
The invention provides a multifrequency antenna for connecting with the circuit board of a mobile communication apparatus. The circuit board is provided with a grounding surface, the metal frame of the mobile communication apparatus surrounds the edge of the circuit board, the metal frame is coupled with the grounding surface, the multifrequency antenna comprises a first radiation portion and at least one second radiation portion, the first radiation portion is arranged at the side edge adjacent to the grounding surface, the first radiation portion is provided with a feed-in end and a grounding end, the first radiation portion encircles the metal frame at the side edge adjacent to the grounding surface to form a cycle, the first radiation portion forms a first current path for generating a first operation mode, the second radiation portion is connected with the first radiation portion, the second radiation portion forms a second current path for generating a second operation mode, and the frequency of the second operation mode is higher than the frequency of the first operation mode.
Description
Technical field
The present invention has about a kind of antenna, and particularly a kind of multifrequency antenna and there is the mobile communications device of multifrequency antenna.
Background technology
Existing mobile communications device all has obvious lifting in operational capability and communication function, makes in modern society, and mobile communications device is the daily necessities carried with of people often.But for user, the outward appearance of mobile communications device is also taken seriously.Therefore, manufacturer proposes the design concept of quite a lot of kind for the outward appearance of mobile device.In order to make the outward appearance of mobile communications device have novelty, have the moulding such as texture, the casing of mobile communications device can have metal assembly usually.Such as: the screen panel of metal-like, casing carry on the back the metal frame etc. of lid or side.But in the consideration of Antenna Design, the assembly that casing has metal material often affects the characteristic of antenna.
Summary of the invention
The embodiment of the present invention provides a kind of multifrequency antenna and has the mobile communications device of multifrequency antenna, be applicable to the mobile communications device with metal frame, and the beamwidth of antenna demand meeting Long Term Evolution (LongTerm Evolution, LTE) can be provided.
The embodiment of the present invention provides a kind of multifrequency antenna, in order to connect the circuit board of mobile communications device.Described circuit board has ground plane, and the metal frame of mobile communications device along circuit board edge around, this metal frame couples ground plane.Described multifrequency antenna comprises the first Department of Radiation and at least one second Department of Radiation.First Department of Radiation is arranged at the side of contiguous ground plane.First Department of Radiation has feed side and earth terminal.First Department of Radiation around be adjacent to ground plane side metal frame and form a circulation.First Department of Radiation forms the first current path, operates mode for generation first.Second Department of Radiation connects the first Department of Radiation, and the second Department of Radiation forms the second current path, operates mode for generation second, and the frequency of described second operation mode operates the frequency of mode higher than described first.
The embodiment of the present invention provides a kind of mobile communications device, and it comprises circuit board, metal frame and multifrequency antenna.Circuit board has ground plane.Metal frame is along the top at the edge of circuit board around, the ground plane of metal frame coupling circuit boards.Multifrequency antenna connecting circuit board.Multifrequency antenna comprises the first Department of Radiation and at least one second Department of Radiation.First Department of Radiation is arranged at the side of contiguous ground plane.First Department of Radiation has feed side and earth terminal.First Department of Radiation around be adjacent to ground plane side metal frame and form a circulation.First Department of Radiation forms the first current path, operates mode for generation first.Second Department of Radiation connects the first Department of Radiation, and the second Department of Radiation forms the second current path, operates mode for generation second, and the frequency of described second operation mode operates the frequency of mode higher than described first.
In sum, the embodiment of the present invention provides a kind of multifrequency antenna and has the mobile communications device of multifrequency antenna, the first Department of Radiation representing cycle antenna is arranged near metal frame, to produce parasitic capacitance, increase the bandwidth of low frequency operation mode by this, described low frequency operation mode can meet the frequency band (704MHz-894MHz) of Long Term Evolution and the frequency band (880MHz-960MHz) of global system for mobile communications (GSM) simultaneously.
Further understand feature of the present invention and technology contents for enable, refer to following detailed description for the present invention and accompanying drawing, but these illustrate that with institute's accompanying drawings be only for the present invention is described, but not any restriction is done to interest field of the present invention.
Accompanying drawing explanation
Figure 1A is the schematic diagram with the mobile communications device of multifrequency antenna that the embodiment of the present invention provides.
Figure 1B is the schematic diagram that multifrequency antenna that the embodiment of the present invention provides is arranged in mobile communications device.
Fig. 2 A is the schematic diagram with the mobile communications device of multifrequency antenna that another embodiment of the present invention provides.
Fig. 2 B is the schematic diagram be arranged in mobile communications device of the multifrequency antenna that another embodiment of the present invention provides.
Fig. 3 is the schematic diagram with the mobile communications device of multifrequency antenna that another embodiment of the present invention provides.
Fig. 4 is the schematic diagram of the multifrequency antenna that another embodiment of the present invention provides.
Fig. 5 is the performance diagram of the S11 parameter that another embodiment of the present invention provides.
Wherein, description of reference numerals is as follows:
1,2,3,4: mobile communications device
10: circuit board
101: ground plane
101a, 12a: side
11,31,41: multifrequency antenna
12,22: metal frame
13,33,43,45: upper cover
14: lower cover
111,311,411: the first Departments of Radiation
112,312,412: the second Departments of Radiation
111a, 311a: feed side
111b, 311b: earth terminal
111c: extension
11a: feed-in assembly
11b: grounding assembly
113: matrix
222: recess region
25: side cover
Embodiment
(multifrequency antenna and there is the embodiment of mobile communications device of multifrequency antenna)
Referring to Figure 1A and Figure 1B, Figure 1A is the schematic diagram with the mobile communications device of multifrequency antenna that the embodiment of the present invention provides.Figure 1B is the schematic diagram that multifrequency antenna that the embodiment of the present invention provides is arranged in mobile communications device.Mobile communications device 1 comprises circuit board 10, metal frame 12, upper cover 13, lower cover 14 and multifrequency antenna 11.Multifrequency antenna 11 connecting circuit board 10.Metal frame 12, upper cover 13 and lower cover 14 combine the casing ontology of rear formation mobile communications device 1.In the present embodiment, multifrequency antenna 11 is arranged on the circuit board 10 of mobile communications device 1, but therefore the present invention does not limit.Other setting positions of multifrequency antenna 11 can with reference to the explanation of subsequent embodiment.
Described circuit board 10 has ground plane 101, and the metal frame 12 of mobile communications device 1 is along the edge of circuit board 10 around (i.e. four sides of the circuit board 10 of Figure 1A), and metal frame 12 couples ground plane 101.Described multifrequency antenna 11 comprises the first Department of Radiation 111, feed-in assembly 11a, grounding assembly 11b, at least one second Department of Radiation 112 and matrix 113.Matrix 113 carries the first Department of Radiation 111 and the second Department of Radiation 112.First Department of Radiation 111 is arranged at the side 101a of contiguous ground plane 101.First Department of Radiation 111 has feed side 111a, extension 111c and earth terminal 111b.In one embodiment of this invention, extension 111c can be omitted.Extension 111c connects earth terminal 111b and contiguous grounding assembly 11b, in order to adjust the bandwidth of the first operation mode that the first Department of Radiation 111 produces.
As shown in Figure 1B, the first Department of Radiation 111 around be adjacent to ground plane 101 side 101a metal frame 12 and form a circulation.That is the circulation that the first Department of Radiation 111 is formed is adjacent to the side 12a of metal frame 12, one of them side of the casing ontology of described side 12a representative mobile communication device 1.First Department of Radiation 111 forms cycle antenna, and the length of the first Department of Radiation 111 is approximately a wavelength of corresponding frequency of operation.
Usually, multifrequency antenna 11 can be arranged at one of them minor face of strip (bar-type) mobile communications device 1 (such as: mobile phone).The circulation that first Department of Radiation 111 is formed can produce parasitic capacitance, to increase the bandwidth of low frequency with contiguous metal frame 12.The embodiment of the present invention utilizes the metal frame of the casing structure of device for mobile communication 1, reaches the object increasing the beamwidth of antenna.Metal frame 12 can be such as made by the metal materials such as stainless steel, aluminium or alloy.
Multiple with reference to Figure 1A and Figure 1B, feed-in assembly 11a is arranged on circuit board 10, and in order to provide feed-in one radiofrequency signal, feed-in assembly 11a connects the feed side 111a of the first Department of Radiation 111.Grounding assembly 11b is arranged on circuit board 10 and by the side 101a of ground plane 101 and stretches out, in order to connect the earth terminal 111b of the first Department of Radiation 111.It is worth mentioning that, when the length of feed-in assembly 11a and grounding assembly 11b be can not ignore, feed-in assembly 11a, the first Department of Radiation 111 and the total length of grounding assembly 11b are about a wavelength of corresponding frequency of operation.
First Department of Radiation 111 forms the first current path, operates mode for generation first.Second Department of Radiation 112 connects the first Department of Radiation 111, and the second Department of Radiation 112 forms the second current path, operates mode for generation second, and the frequency of described second operation mode operates the frequency of mode higher than described first.Second Department of Radiation 112 such as can connect 111 feed side 111a of the first Department of Radiation, or is connected to any position in loop structure that the first Department of Radiation 111 formed.The position of the second Department of Radiation 112 can be designed according to actual needs.
(multifrequency antenna and there is another embodiment of mobile communications device of multifrequency antenna)
The schematic diagram with the mobile communications device of multifrequency antenna that another embodiment of the present invention provides referring to Figure 1A, Fig. 2 A and Fig. 2 B, Fig. 2 A.Fig. 2 B is the schematic diagram be arranged in mobile communications device of the multifrequency antenna that another embodiment of the present invention provides.Mobile communications device 2 comprises circuit board 10, metal frame 22, side cover 25, upper cover 13, lower cover 14 and multifrequency antenna 11.Multifrequency antenna 11 connecting circuit board 10.Metal frame 22, side cover 25, upper cover 13 and lower cover 14 combine the casing ontology of rear formation mobile communications device 2.Multifrequency antenna 11 comprises the first Department of Radiation 111, feed-in assembly 11a, grounding assembly 11b and at least one second Department of Radiation 112.
The mobile communications device 2 of the present embodiment is roughly the same with the mobile device 1 in Figure 1A, and its difference is only that the structure of the metal frame 22 of mobile communications device 2 is not identical with the structure of the metal frame 12 in Figure 1A.In order to the bandwidth needs making the bandwidth of antenna reach LTE, especially for the frequency band of the Long Term Evolution of 704MHz-894MHz.Metal frame in Figure 1A 12 is bent inwards at side 12a, and extends to the inner side of the side 101a of ground plane 101, to form metal frame 22.As shown in Figure 2 B, metal frame 22 strides across the side 101a of ground plane 101 and overlaps each other with ground plane 101.In other words, the path of the side 101a of the contiguous ground plane 101 of metal frame 22 through repeatedly bending, and forms recess region 222, and the first Department of Radiation 111 forms circulation around the edge of recess region 222.Recess region 222 is positioned at the top of ground plane 101, and part overlaps each other with ground plane 101.It is worth mentioning that, side cover 25 can be do not comprise metal assembly, to increase the bandwidth of operation of antenna.
(multifrequency antenna and there is another embodiment of mobile communications device of multifrequency antenna)
Fig. 3 is the schematic diagram with the mobile communications device of multifrequency antenna that another embodiment of the present invention provides.Mobile communications device 3 comprises circuit board 10, metal frame 22, upper cover 33, lower cover 14 and multifrequency antenna 31.Multifrequency antenna 31 is through feed-in assembly 11a and grounding assembly 11b connecting circuit board 10.Metal frame 22, upper cover 33 and lower cover 14 combine the casing ontology of rear formation mobile communications device 3.In the present embodiment, multifrequency antenna 31 does not need the matrix 113 of the carrying of preceding embodiment.Multifrequency antenna 31 is arranged on the upper cover 33 of mobile communications device 1, but therefore the present invention does not limit.Multifrequency antenna 31 can be arranged on outside or inner side (the corresponding respectively to outside and the inner side of casing ontology) of upper cover 33.Multifrequency antenna 31 can utilize sheet metal to be fixed on solid line on upper cover 33, or multifrequency antenna 31 also can utilize the technology realizations such as laser carved.
Circuit board 10 has ground plane 101, and the metal frame 22 of mobile communications device 1 along circuit board 10 edge around, metal frame 22 couples ground plane 101.Multifrequency antenna 31 comprises the first Department of Radiation 311, feed-in assembly 31a, grounding assembly 31b and at least one second Department of Radiation 312.First Department of Radiation 311 is arranged at the side 101a of contiguous ground plane 101.First Department of Radiation 311 has feed side 311a and earth terminal 311b.As shown in Figure 3, the first Department of Radiation 311 around be adjacent to ground plane 101 side 101a metal frame 22 and form a circulation.That is the path of the side 101a of the contiguous ground plane 101 of metal frame 22 through repeatedly bending, and forms recess region 222, and the first Department of Radiation 311 forms circulation around the edge of recess region 222.Recess region 222 is positioned at the top of ground plane 101, and part overlaps each other with ground plane 101.
Multiple with reference to Fig. 3, feed-in assembly 11a is arranged on circuit board 10, and in order to provide feed-in one radiofrequency signal, feed-in assembly 11a connects the feed side 311a of the first Department of Radiation 311.Grounding assembly 11b is arranged on circuit board 10 and by the side 101a of ground plane 101 and stretches out, in order to connect the earth terminal 311b of the first Department of Radiation 311.First Department of Radiation 311 forms the first current path, operates mode for generation first.Second Department of Radiation 312 connects the first Department of Radiation 311, and the second Department of Radiation 312 forms the second current path, operates mode for generation second, and the frequency of described second operation mode operates the frequency of mode higher than described first.Second Department of Radiation 312 such as can connect 311 feed side 311a of the first Department of Radiation, or is connected to any position in loop structure that the first Department of Radiation 311 formed.The position of the second Department of Radiation 312 can be designed according to actual needs.
(multifrequency antenna and there is another embodiment of mobile communications device of multifrequency antenna)
Referring to Fig. 3 and Fig. 4, Fig. 4 is the schematic diagram of the multifrequency antenna that another embodiment of the present invention provides.Multifrequency antenna 41 in Fig. 4 is roughly the same with the multifrequency antenna 31 in Fig. 3, its difference is only that the multifrequency antenna 31 of Fig. 3 is the upper of the upper cover 33 being arranged on plane form, and the multifrequency antenna 41 of Fig. 4 is the upper of the upper cover 43 with curved surface being arranged on mobile communications device 4.Upper cover 43 in Fig. 4 and upper cover 45 form the complete upper cover of mobile communications device 4.Multifrequency antenna 41 comprises the first Department of Radiation 411, feed-in assembly 31a (as shown in Figure 3), grounding assembly 31b (as shown in Figure 3) and at least one second Department of Radiation 412.
Referring to Fig. 4 and Fig. 5, Fig. 5 is the performance diagram of the S11 parameter that another embodiment of the present invention provides.The cycle antenna that first Department of Radiation 412 is formed produces the first operation mode, and meets the bandwidth of operation between 704MHz-960MHz.The two operation mode that multiple second Department of Radiation 412 (being 3 the second Departments of Radiation 412 in the diagram) is formed, and meet the bandwidth of operation of 1710MHz-2170MHz.
(possible effect of embodiment)
In sum, the multifrequency antenna that the embodiment of the present invention provides and there is the mobile communications device of multifrequency antenna, the first Department of Radiation representing cycle antenna is arranged near the recess region of metal frame or metal frame, to produce parasitic capacitance, increase the bandwidth of low frequency operation mode by this, described low frequency operation mode can meet the frequency band (704MHz-894MHz) of Long Term Evolution and the frequency band (880MHz-960MHz) of global system for mobile communications simultaneously.In addition, the operation mode that the second Department of Radiation produces can meet the bandwidth demand of 1710MHz-2170MHz, meets the multi-band operation needs needed for Modern wireless communication device.
The foregoing is only embodiments of the invention, it is also not used to limit to the scope of the claims of the present invention.
Claims (10)
1. a multifrequency antenna, is characterized in that, in order to connect a circuit board of a mobile communications device, this circuit board has a ground plane, one metal frame of this mobile communications device along this circuit board edge around, this metal frame couples this ground plane, and this multifrequency antenna comprises:
One first Department of Radiation, be arranged at a side of this ground plane contiguous, this first Department of Radiation has a feed side and an earth terminal, wherein this first Department of Radiation around be adjacent to this ground plane this side this metal frame and form a circulation, this first Department of Radiation forms one first current path, operates mode for generation one first; And
At least one second Department of Radiation, connects this first Department of Radiation, this second Department of Radiation formed one second current path, for generation one second operate mode, wherein this second operation mode frequency higher than this first operation mode frequency.
2. multifrequency antenna according to claim 1, more comprises:
One feed-in assembly, is arranged on this circuit board, and in order to provide feed-in one radiofrequency signal, this feed-in assembly connects this feed side of this first Department of Radiation; And
One grounding assembly, is arranged on this circuit board and by this side of this ground plane and stretches out, in order to connect this earth terminal of this first Department of Radiation.
3. multifrequency antenna according to claim 1, wherein the path of this side of this metal frame this ground plane contiguous is through repeatedly bending, and forms a recess region, and this first Department of Radiation forms this circulation around the edge of this recess region.
4. multifrequency antenna according to claim 3, these recess region some of are positioned at the top of this ground plane, and part overlaps each other with this ground plane.
5. multifrequency antenna according to claim 1, more comprises:
One matrix, carries this first Department of Radiation and this second Department of Radiation.
6. a mobile communications device, is characterized in that, comprises;
One circuit board, has a ground plane;
One metal frame, along this circuit board edge around, this metal frame couples this ground plane of this circuit board; And
One multifrequency antenna, connects this circuit board, comprising:
One first Department of Radiation, be arranged at a side of this ground plane contiguous, this first Department of Radiation has a feed side and an earth terminal, wherein this first Department of Radiation around be adjacent to this ground plane this side this metal frame and form a circulation, this first Department of Radiation forms one first current path, operates mode for generation one first; And
At least one second Department of Radiation, connects this first Department of Radiation, this second Department of Radiation formed one second current path, for generation one second operate mode, wherein this second operation mode frequency higher than this first operation mode frequency.
7. mobile communications device according to claim 6, more comprises:
One feed-in assembly, is arranged on this circuit board, and in order to provide feed-in one radiofrequency signal, this feed-in assembly connects this feed side of this first Department of Radiation; And
One grounding assembly, is arranged on this circuit board and by this side of this ground plane and stretches out, in order to connect this earth terminal of this first Department of Radiation.
8. mobile communications device according to claim 6, wherein the path of this side of this metal frame this ground plane contiguous is through repeatedly bending, and forms a recess region, and this first Department of Radiation forms this circulation around the edge of this recess region.
9. mobile communications device according to claim 8, these recess region some of are positioned at the top of this ground plane, and part overlaps each other with this ground plane.
10. mobile communications device according to claim 6, more comprises:
One matrix, carries this first Department of Radiation and this second Department of Radiation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310367264.6A CN104425894A (en) | 2013-08-21 | 2013-08-21 | Multifrequency antenna, and mobile communication apparatus with multifrequency antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310367264.6A CN104425894A (en) | 2013-08-21 | 2013-08-21 | Multifrequency antenna, and mobile communication apparatus with multifrequency antenna |
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| CN104425894A true CN104425894A (en) | 2015-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310367264.6A Pending CN104425894A (en) | 2013-08-21 | 2013-08-21 | Multifrequency antenna, and mobile communication apparatus with multifrequency antenna |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048070A (en) * | 2015-07-21 | 2015-11-11 | 深圳市信维通信股份有限公司 | Metal ring antenna structure with meander lines |
| CN106465556A (en) * | 2016-07-21 | 2017-02-22 | 北京小米移动软件有限公司 | Metal cover and electronic equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102043438A (en) * | 2009-10-15 | 2011-05-04 | 宏碁股份有限公司 | Electronic system |
| US20110273341A1 (en) * | 2010-05-10 | 2011-11-10 | Samsung Electronics Co., Ltd. | Communication terminal and antenna apparatus thereof |
| CN102255134A (en) * | 2011-04-21 | 2011-11-23 | 广东欧珀移动通信有限公司 | Multi-coupling built-in antenna device |
| CN103178343A (en) * | 2013-03-22 | 2013-06-26 | 深圳市中兴移动通信有限公司 | Antenna device and mobile terminal |
-
2013
- 2013-08-21 CN CN201310367264.6A patent/CN104425894A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102043438A (en) * | 2009-10-15 | 2011-05-04 | 宏碁股份有限公司 | Electronic system |
| US20110273341A1 (en) * | 2010-05-10 | 2011-11-10 | Samsung Electronics Co., Ltd. | Communication terminal and antenna apparatus thereof |
| CN102255134A (en) * | 2011-04-21 | 2011-11-23 | 广东欧珀移动通信有限公司 | Multi-coupling built-in antenna device |
| CN103178343A (en) * | 2013-03-22 | 2013-06-26 | 深圳市中兴移动通信有限公司 | Antenna device and mobile terminal |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048070A (en) * | 2015-07-21 | 2015-11-11 | 深圳市信维通信股份有限公司 | Metal ring antenna structure with meander lines |
| CN106465556A (en) * | 2016-07-21 | 2017-02-22 | 北京小米移动软件有限公司 | Metal cover and electronic equipment |
| CN106465556B (en) * | 2016-07-21 | 2019-01-18 | 北京小米移动软件有限公司 | Metal cap body and electronic equipment |
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Application publication date: 20150318 |