CN104124511A - Mobile device - Google Patents
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- CN104124511A CN104124511A CN201310152322.3A CN201310152322A CN104124511A CN 104124511 A CN104124511 A CN 104124511A CN 201310152322 A CN201310152322 A CN 201310152322A CN 104124511 A CN104124511 A CN 104124511A
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- mobile device
- radiation
- department
- coupled
- resonant circuit
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Abstract
The invention provides a mobile device. The mobile device comprises a medium substrate, a grounding surface, a radiation portion and a resonance circuit. The grounding surface is arranged on the medium substrate. The medium substrate has a non-grounding area. The radiation portion and the resonance circuit are arranged in the non-grounding area. The resonance circuit comprises a capacitor element and an inductor element. A signal source is coupled to the radiation portion through the resonance circuit. The radiation portion, the resonance circuit and the grounding surface form an antenna structure together. The mobile device at least has the advantages of low cost, simple structure and easy process and the like.
Description
Technical field
The present invention relates to a kind of mobile device, relate in particular to the mobile device that comprises an antenna structure.
Background technology
Along with the prosperity of mobile communication technology, mobile device is more prevalent in recent years, for example common: the portable electron device of laptop computer, mobile phone, multimedia player and other mixed functions.In order to meet people's demand, mobile device has the function of radio communication conventionally.Some contains the range for wireless communication of long distance, for example: mobile phone uses 2G, 3G, LTE (Long Term Evolution) system and the 700MHz that uses thereof, 850MHz, 900MHz, 1800MHz, 1900MHz, 2100MHz, the frequency bands for communication of 2300MHz and 2500MHz, some contains short-range range for wireless communication, for example: Wi-Fi, Bluetooth and WiMAX (Worldwide Interoperability for Microwave Access) system is used 2.4GHz, 3.5GHz, the frequency bands for communication of 5.2GHz and 5.8GHz.
In existing technology, a normal metalwork using fixed dimension is as the antenna body of mobile device, and the length of this metalwork must equal 1/2nd wavelength or the quarter-wave that required frequency band is corresponding.But, the corresponding wavelength of some low-frequency bands (for example: GPS (Global Positioning System) frequency band) is longer, and Antenna Design person is often difficult to the metalwork with this wavelength to design in the middle of the mobile device of miniaturization.
Summary of the invention
In order to solve foregoing problems, the invention provides a kind of mobile device, comprising: a medium substrate; One ground plane, is arranged on this medium substrate, and wherein this medium substrate also has a ungrounded region; One Department of Radiation, is arranged in this ungrounded region; And a resonant circuit, be arranged in this ungrounded region, and comprise a capacity cell and an inductance element; Wherein, a signal source is coupled to this Department of Radiation via this resonant circuit; And wherein, this Department of Radiation, this resonant circuit, and the common antenna structure that forms of this ground plane.
The invention provides a kind of mobile device and miniaturized planar formula antenna structure thereof, at least there is low cost, simple in structure, and easy etc. the advantage of technique.According to actual measurement, for example, antenna efficiency Yue Keda 47% to 49% in low-frequency band (: GPS frequency band) of antenna structure of the present invention, can realistic application demand.
Brief description of the drawings
Fig. 1 shows according to the schematic diagram of the mobile device described in one embodiment of the invention;
Fig. 2 shows according to the schematic diagram of the mobile device described in one embodiment of the invention;
Fig. 3 shows to return to loss figure according to the antenna structure of the mobile device described in one embodiment of the invention;
Fig. 4 shows according to the schematic diagram of the mobile device described in one embodiment of the invention;
Fig. 5 shows according to the schematic diagram of the mobile device described in one embodiment of the invention;
Fig. 6 shows according to the schematic diagram of the mobile device described in one embodiment of the invention;
Fig. 7 shows according to the schematic diagram of the mobile device described in one embodiment of the invention; And
Fig. 8 shows according to the schematic diagram of the mobile device described in one embodiment of the invention.
Wherein, description of reference numerals is as follows:
100,200,400,500,600,700,800～mobile device;
110～medium substrate;
120～ground plane;
130～ungrounded region;
140,240,540,740～Department of Radiation;
150,250,450～resonant circuit;
190～signal source;
241,541, the first end of 741～Department of Radiation;
242,542, the second end of 742～Department of Radiation;
260～connecting portion;
C1～capacity cell;
L1～inductance element;
FB1～operational frequency bands.
Embodiment
For object of the present invention, feature and advantage can be become apparent, cited below particularly go out specific embodiments of the invention, and coordinate accompanying drawing, be described in detail below.
Fig. 1 shows according to the schematic diagram of the mobile device 100 described in one embodiment of the invention.Mobile device 100 can be a smart mobile phone (Smart Phone), a panel computer (Tablet Computer), or a notebook computer (Notebook Computer).As shown in Figure 1, mobile device 100 at least comprises: a medium substrate (Dielectric Substrate) 110, a ground plane 120, a Department of Radiation 140, and a resonant circuit (Resonant Circuit) 150.Medium substrate 110 can be a system circuit board (SystemCircuit Board) or a FR4 substrate.Ground plane 120 and Department of Radiation 140 can be made with metal, for example: copper, silver, or aluminium.Must be noted that mobile device 100 also can comprise other elements, for example: a processor, a contact panel, a touch-control module, a camera model, a loud speaker, a battery, and a shell (not shown).
Ground plane 120 is arranged on medium substrate 110.Medium substrate 110 also has one ungrounded (Non-Ground) region 130.In certain embodiments, ungrounded region 130 is roughly a rectangle.In certain embodiments, ungrounded region 130 is roughly positioned at a corner or an edge of medium substrate 110.Department of Radiation 140 and resonant circuit 150 are arranged in ungrounded region 130.In the present embodiment, Department of Radiation 140 is roughly an I font.In other embodiments, Department of Radiation 240 also can be roughly a L font, J-shaped, a U font, or a S font.Resonant circuit 150 comprises at least one capacity cell and at least one inductance element.Department of Radiation 140, resonant circuit 150, and ground plane 120 can form an antenna structure jointly, it is roughly a plane formula structure.One signal source 190 is coupled to Department of Radiation 140 via resonant circuit 150, to excite this antenna structure.In certain embodiments, signal source 190 also can be coupled to a coaxial wire (Coaxial Cable) (not shown), wherein a center conductor of this coaxial wire is coupled to resonant circuit 150, and a conductor casing of this coaxial wire is coupled to ground plane 120.
In the present invention, this capacity cell of resonant circuit 150 and this inductance element can adopt coupled in parallel or coupled in series.By suitably selecting the inductance value of a capacitance He this inductance element of this capacity cell, resonant circuit 150 can produce an empty resonance near an operational frequency bands of this antenna structure.This design can be considered it is that resonant circuit 150 provides an extra resonant length.Therefore, the size of antenna structure of the present invention can be dwindled significantly, can be applicable to easily the mobile device of various miniaturizations.
Fig. 2 shows according to the schematic diagram of the mobile device 200 described in one embodiment of the invention.Fig. 2 is similar with Fig. 1.As shown in Figure 2, mobile device 200 at least comprises: a medium substrate 110, a ground plane 120, a Department of Radiation 240, a resonant circuit 250, and a junction 260.Similarly, medium substrate 110 also has a ungrounded region 130, wherein Department of Radiation 240, resonant circuit 250, and connecting portion 260 is all arranged in ungrounded region 130.In the present embodiment, Department of Radiation 240 is roughly a L font.In other embodiments, Department of Radiation 240 also can be roughly an I font, J-shaped, a U font, or a S font.In more detail, a first end 241 of Department of Radiation 240 is coupled to resonant circuit 250, and one second end 242 of Department of Radiation 240 is an open end (Open End).Resonant circuit 250 comprises a capacity cell C1 and an inductance component L 1, wherein capacity cell C1 and inductance component L 1 coupled in parallel.Capacity cell C1 can be a chip capacitor (Chip Capacitor), and inductance component L 1 can be a chip inducer (Chip Inductor).In other embodiments, resonant circuit 250 also can comprise two or more capacity cell and inductance element.Connecting portion 260 can be made with metal, for example: copper, silver, or aluminium.Connecting portion 260 is coupled between signal source 190 and resonant circuit 250, and is roughly a T font.In order to form a parallel circuits, capacity cell C1 is coupled to a first end of connecting portion 260, and inductance component L 1 is coupled to one second end of connecting portion 260, and wherein this first end is with respect to this second end.In other embodiments, connecting portion 250 also can be roughly a U font.Department of Radiation 240, resonant circuit 250, connecting portion 260, and ground plane 120 can form an antenna structure jointly, it is roughly a plane formula structure.One signal source 190 is coupled to Department of Radiation 240 via connecting portion 260 and resonant circuit 250, to excite this antenna structure.All the other features of the mobile device 200 of Fig. 2 are all similar to the mobile device 100 of Fig. 1, so two embodiment all can reach similar operating effect.
Fig. 3 is that demonstration is schemed according to the loss (Return Loss) of returning of this antenna structure of the mobile device 200 described in one embodiment of the invention, and wherein transverse axis represents frequency of operation (MHz), and loss (dB) is returned in longitudinal axis representative.As shown in Figure 3, return under the standard of loss at 10dB, this antenna structure of mobile device 200 can excite and produce an operational frequency bands FB1.In preferred embodiment, operational frequency bands FB1, approximately between between 1565MHz to 1585MHz, can be contained GPS (Global Positioning System) frequency band.In other embodiments, operational frequency bands FB1, approximately between between 2400MHz to 2484MHz, can be contained WLAN (Wireless Local Area Network) 2.4GHz frequency band (not shown).
In certain embodiments, component size of the present invention and component parameters can be as what follows.Please also refer to Fig. 2, Fig. 3.Medium substrate 110 is a FR4 substrate, and its thickness is about 0.8mm, and dielectric constant (Dielectric Constant) is about 4.4.The length of ground plane 120 is about 130mm, and width is about 70mm.The length in ungrounded region 130 is about 18mm, and width is about 6mm.The length of Department of Radiation 240 is about 13mm, and width is about 2mm.The length of resonant circuit 250 is about 4mm, and width is about 2mm.A capacitance of capacity cell C1 is about 0.8pF.One inductance value of inductance component L 1 is about 5.6nH.After adding resonant circuit 250, the length of Department of Radiation 240 can be less than 0.1 times of wavelength (or rather, approximating 0.07 times of wavelength) of a centre frequency of operational frequency bands FB1.Therefore, must correspond to 0.25 times of wavelength of centre frequency compared to the Department of Radiation of traditional antenna, the present invention can dwindle the size of antenna structure effectively, to be applicable to the mobile device of various miniaturizations.
Fig. 4 shows according to the schematic diagram of the mobile device 400 described in one embodiment of the invention.Fig. 4 is similar with Fig. 1.In the mobile device 400 of the present embodiment, a resonant circuit 450 comprises a capacity cell C1 and an inductance component L 1, wherein capacity cell C1 and inductance component L 1 coupled in series.Similarly, resonant circuit 450 also can provide an extra resonant length, to dwindle the size of an antenna structure of mobile device 400.All the other features of the mobile device 400 of Fig. 4 are all similar to the mobile device 100 of Fig. 1, so two embodiment all can reach similar operating effect.
Fig. 5 shows according to the schematic diagram of the mobile device 500 described in one embodiment of the invention.Fig. 5 is similar with Fig. 1.In the mobile device 500 of the present embodiment, a first end 541 of a Department of Radiation 540 is coupled to a signal source 190 via a resonant circuit 250 and a junction 260, and one second end 542 of Department of Radiation 540 is coupled to a ground plane 120.In other words, resonant circuit 250 also can be applied mechanically to a loop antenna (Loop Antenna) structure, to dwindle its overall dimensions.In the present embodiment, Department of Radiation 540 is roughly a J-shaped or L font.Resonant circuit 250 comprises a capacity cell C1 and an inductance component L 1, wherein capacity cell C1 and inductance component L 1 coupled in parallel.Connecting portion 260 is to select (Optional) element, in other embodiments also removable it.All the other features of the mobile device 500 of Fig. 5 are all similar to the mobile device 100 of Fig. 1, so two embodiment all can reach similar operating effect.
Fig. 6 shows according to the schematic diagram of the mobile device 600 described in one embodiment of the invention.Fig. 6 is similar with Fig. 1.In the mobile device 600 of the present embodiment, a first end 541 of a Department of Radiation 540 is coupled to a signal source 190 via a resonant circuit 450, and one second end 542 of Department of Radiation 540 is coupled to a ground plane 120.In the present embodiment, Department of Radiation 540 is roughly a J-shaped or L font.Resonant circuit 450 comprises a capacity cell C1 and an inductance component L 1, wherein capacity cell C1 and inductance component L 1 coupled in series.All the other features of the mobile device 600 of Fig. 6 are all similar to the mobile device 100 of Fig. 1, so two embodiment all can reach similar operating effect.
Fig. 7 shows according to the schematic diagram of the mobile device 700 described in one embodiment of the invention.Fig. 7 is similar with Fig. 1.In the mobile device 700 of the present embodiment, a first end 741 of a Department of Radiation 740 is coupled to a ground plane 120, and one second end 742 of Department of Radiation 740 is an open end.In the present embodiment, Department of Radiation 740 is roughly a L font.One signal source 190 is coupled to a mid portion of Department of Radiation 740 via a junction 260 and a resonant circuit 250.In other words, resonant circuit 250 also can be applied mechanically to a planar inverted F-antenna structure (Planar Inverted F Antenna, PIFA), to dwindle its overall dimensions.Resonant circuit 250 comprises a capacity cell C1 and an inductance component L 1, wherein capacity cell C1 and inductance component L 1 coupled in parallel.Connecting portion 260 is to select element, in other embodiments also removable it.All the other features of the mobile device 700 of Fig. 7 are all similar to the mobile device 100 of Fig. 1, so two embodiment all can reach similar operating effect.
Fig. 8 shows according to the schematic diagram of the mobile device 800 described in one embodiment of the invention.Fig. 8 is similar with Fig. 1.In the mobile device 800 of the present embodiment, a first end 741 of a Department of Radiation 740 is coupled to a ground plane 120, and one second end 742 of Department of Radiation 740 is an open end.In the present embodiment, Department of Radiation 740 is roughly a L font.One signal source 190 is coupled to a mid portion of Department of Radiation 740 via a resonant circuit 450.Resonant circuit 450 comprises a capacity cell C1 and an inductance component L 1, wherein capacity cell C1 and inductance component L 1 coupled in series.All the other features of the mobile device 800 of Fig. 8 are all similar to the mobile device 100 of Fig. 1, so two embodiment all can reach similar operating effect.
Above-described component size, component shape, component parameters, and frequency range is only for for example, not for limiting the present invention.Designer can adjust these set points according to different demands.
The invention provides a kind of mobile device and miniaturized planar formula antenna structure thereof, at least there is low cost, simple in structure, and easy etc. the advantage of technique.According to actual measurement, for example, antenna efficiency Yue Keda 47% to 49% in low-frequency band (: GPS frequency band) of antenna structure of the present invention, can realistic application demand.
Ordinal number in this specification and claim, for example " first ", " second ", " 3rd " etc., do not have the precedence relationship in order each other, and it only distinguishes two different elements with same name for indicating.
Though the present invention discloses as above with preferred embodiment; so it is not in order to limit scope of the present invention; any those of ordinary skill in the art; without departing from the spirit and scope of the present invention; when doing a little change and retouching, the scope that therefore protection scope of the present invention ought define depending on appended claim is as the criterion.
Claims (10)
1. a mobile device, comprising:
One medium substrate;
One ground plane, is arranged on this medium substrate, and wherein this medium substrate also has a ungrounded region;
One Department of Radiation, is arranged in this ungrounded region; And
One resonant circuit, is arranged in this ungrounded region, and comprises a capacity cell and an inductance element;
Wherein, a signal source is coupled to this Department of Radiation via this resonant circuit; And
Wherein, this Department of Radiation, this resonant circuit, and the common antenna structure that forms of this ground plane.
2. mobile device as claimed in claim 1, wherein a first end of this Department of Radiation is coupled to this resonant circuit, and one second end of this Department of Radiation is an open end.
3. mobile device as claimed in claim 1, wherein this capacity cell and this inductance element coupled in parallel.
4. mobile device as claimed in claim 3, also comprises:
A junction, is coupled between this signal source and this resonant circuit, and is roughly a T font.
5. mobile device as claimed in claim 1, wherein this capacity cell and this inductance element coupled in series.
6. mobile device as claimed in claim 1, wherein a first end of this Department of Radiation is coupled to this resonant circuit, and one second end of this Department of Radiation is coupled to this ground plane.
7. mobile device as claimed in claim 1, wherein a first end of this Department of Radiation is coupled to this ground plane, and one second end of this Department of Radiation is an open end, and this resonant circuit is coupled to a mid portion of this Department of Radiation.
8. mobile device as claimed in claim 1, wherein this antenna structure excites and produces an operational frequency bands, and this operational frequency bands is approximately between between 1565MHz to 1585MHz; And the length of this Department of Radiation is less than 0.1 times of wavelength of a centre frequency of this operational frequency bands.
9. mobile device as claimed in claim 1, wherein a capacitance of this capacity cell is about 0.8pF, and an inductance value of this inductance element is about 5.6nH.
10. mobile device as claimed in claim 1, wherein this Department of Radiation is roughly an I font or a L font.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310152322.3A CN104124511A (en) | 2013-04-27 | 2013-04-27 | Mobile device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310152322.3A CN104124511A (en) | 2013-04-27 | 2013-04-27 | Mobile device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104124511A true CN104124511A (en) | 2014-10-29 |
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ID=51769841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310152322.3A Pending CN104124511A (en) | 2013-04-27 | 2013-04-27 | Mobile device |
Country Status (1)
| Country | Link |
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| CN (1) | CN104124511A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5604507A (en) * | 1996-02-28 | 1997-02-18 | Antenex, Inc. | Wide-banded mobile antenna |
| CN1714471A (en) * | 2002-11-18 | 2005-12-28 | 株式会社友华 | Antenna for a plurality of bands |
| CN1992434A (en) * | 2005-12-27 | 2007-07-04 | 株式会社友华 | Multi-band antenna |
| US20110134009A1 (en) * | 2008-06-06 | 2011-06-09 | Murata Manufacturing Co., Ltd. | Multiband antenna and mounting structure for multiband antenna |
| CN102696149A (en) * | 2009-11-13 | 2012-09-26 | 日立金属株式会社 | Frequency variable antenna circuit, antenna component constituting the same, and wireless communication device using those |
-
2013
- 2013-04-27 CN CN201310152322.3A patent/CN104124511A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5604507A (en) * | 1996-02-28 | 1997-02-18 | Antenex, Inc. | Wide-banded mobile antenna |
| CN1714471A (en) * | 2002-11-18 | 2005-12-28 | 株式会社友华 | Antenna for a plurality of bands |
| CN1992434A (en) * | 2005-12-27 | 2007-07-04 | 株式会社友华 | Multi-band antenna |
| US20110134009A1 (en) * | 2008-06-06 | 2011-06-09 | Murata Manufacturing Co., Ltd. | Multiband antenna and mounting structure for multiband antenna |
| CN102696149A (en) * | 2009-11-13 | 2012-09-26 | 日立金属株式会社 | Frequency variable antenna circuit, antenna component constituting the same, and wireless communication device using those |
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Application publication date: 20141029 |