CN101853985B - Mobile communication antenna - Google Patents
Mobile communication antenna Download PDFInfo
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- CN101853985B CN101853985B CN200910132987.1A CN200910132987A CN101853985B CN 101853985 B CN101853985 B CN 101853985B CN 200910132987 A CN200910132987 A CN 200910132987A CN 101853985 B CN101853985 B CN 101853985B
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Abstract
The invention relates to a mobile communication antenna, which comprises a medium substrate, a first grounding plane, a radiation assembly, a second grounding plane and a slit, wherein the first grounding plane is positioned on the medium substrate; the radiation assembly is positioned on the medium substrate or closes to the medium substrate, and the radiation assembly is electrically connected to a signal source positioned on the medium substrate; the second grounding plane is close to one side of the first grounding plane and is electrically connected to the first grounding plane through a metal wire; and the slit is positioned on the second grounding plane and closes to the metal wire.
Description
Technical field
The present invention relates to a kind of mobile communication antenna, particularly a kind of mobile communication antenna with reduction ground plane effect.
Background technology
Along with development and the progress of wireless communication technology, wireless communications products miscellaneous is appearance thereupon also, and mobile phone is quite general application.At present in society, the type of mobile phone is comparatively common vertical type, a collapsible and cover-slide-type handset.In dissimilar mobile phone, because adopted mobile appliance system ground plane is different, its antenna adopting is also not quite similar.For example clamshell phone is compared to stand hand-set, its system ground is consisted of upper plate ground plane and motherboard ground plane, if therefore the antenna of stand hand-set is directly applied in clamshell phone, antenna needs to readjust or design, and its spent R&D costs will increase.For example US Patent No. 6,750,821B2 " Folded Dual-Band AntennaApparatus " (folding double-frequency antenna unit), it discloses a kind of Antenna Design that is applied to stand hand-set, if yet this antenna is directly applied in clamshell phone, need to readjust antenna parameter, increase R&D costs.
Summary of the invention
The present invention proposes in order to address the above problem, and the object of the present invention is to provide a kind of mobile communication antenna that reduces ground plane effect that has, and it can reduce as the impact of the upper plate ground plane of clamshell phone for antenna performance.
For the attainment of one's purpose, the invention provides a kind of mobile communication antenna, comprise: medium substrate, the first ground plane, radiation assembly, the second ground plane and the line of rabbet joint.The first ground plane is formed on medium substrate with etching or printing technology; Radiation assembly is positioned on medium substrate or is adjacent to medium substrate, and this radiation assembly be electrically connected to the signal source being positioned on medium substrate; The second ground plane, a side of its contiguous the first ground plane, and be electrically connected to the first ground plane via metal wire; The line of rabbet joint is positioned on the second ground plane, and adjacent metal lines.
According to the design focal point of antenna of the present invention, be the antenna of stand hand-set to be directly applied to clamshell phone, and do not need antenna to readjust or design, maintain antenna superperformance originally simultaneously.Antenna technology according to the present invention is the radiation assembly of antenna is placed on motherboard or is adjacent to motherboard, near the metal wire that connects upper plate ground plane (the second ground plane) and motherboard ground plane (the first ground plane), insert the line of rabbet joint simultaneously, this line of rabbet joint can be positioned on upper plate ground plane or on motherboard ground plane, all can make the Surface current distribution major part of the upper plate ground plane that excited by aerial radiation assembly be confined near the line of rabbet joint, other interval Surface current distribution of upper plate ground plane significantly reduces thus, upper plate ground plane is significantly reduced the effective length of antenna and area, therefore can reduce the impact of upper plate ground plane on antenna performance.
Antenna applications according to the present invention is when clamshell phone, can be so that upper plate ground plane effect significantly reduces owing to inserting the line of rabbet joint, therefore antenna performance is similar to antenna applications in the situation of stand hand-set, no matter simultaneously antenna of the present invention, when mobile phone is conversed or during cell phone standby, all has good antenna performance.
Accompanying drawing explanation
Fig. 1 is according to the structure chart of the first embodiment of antenna of the present invention;
Fig. 2 is according to the structure chart of the second embodiment of antenna of the present invention;
Fig. 3 is for returning to loss schematic diagram according to the second embodiment of antenna of the present invention;
Fig. 4 is according to the structure chart of antenna of the present invention the 3rd embodiment (situation when two ground planes of the second embodiment are parallel each other);
Fig. 5 is for returning to loss schematic diagram according to the 3rd embodiment of antenna of the present invention;
Fig. 6 is according to the structure chart of the 4th embodiment of antenna of the present invention;
Fig. 7 is according to the structure chart of the 5th embodiment of antenna of the present invention;
Fig. 8 is according to the structure chart of the 6th embodiment of antenna of the present invention;
Fig. 9 is according to the structure chart of the 7th embodiment of antenna of the present invention.
Main symbol description: 1 first embodiment that is antenna of the present invention, 2 is the second embodiment of antenna of the present invention, 4 is the 3rd embodiment when parallel (two ground planes of the second embodiment each other) of antenna of the present invention, 6 is the 4th embodiment of antenna of the present invention, 7 is the 5th embodiment of antenna of the present invention, 8 the 6th embodiment that are antenna of the present invention, 9 the 7th embodiment that are antenna of the present invention, 11 is medium substrate, 12, 82, 92 is the first ground plane, 121, 821, 921 is a side of the first ground plane, 13, 23 is radiation assembly, and 14 is signal source, 15, 45, 65, 75, 85 is the second ground plane, 16, 76 is metal wire, 17, 47, 67, 77, 87, 97 is the line of rabbet joint, 231 is antenna load point, 232 is short dot, 31 is the first operational frequency bands of the second embodiment of antenna, 32 is the second operational frequency bands of the second embodiment of antenna, 33 the first operational frequency bands when the line of rabbet joint not being set in the second embodiment of antenna, the second operational frequency bands while the line of rabbet joint not being set in 34 second embodiment that are antenna, 51 is the first operational frequency bands of the 3rd embodiment of antenna, the second operational frequency bands of 52 the 3rd embodiment that are antenna.
Embodiment
Fig. 1 is according to the structure chart of the first embodiment of antenna of the present invention, comprises: medium substrate 11, the first ground plane 12, radiation assembly 13, the second ground plane 15 and the line of rabbet joint 17.The first ground plane 12 is formed on medium substrate 11 with etching or printing technology; Radiation assembly 13 is positioned on medium substrate 11 or is adjacent to medium substrate 11, and this radiation assembly 13 be electrically connected to the signal source 14 being positioned on medium substrate 11; One side 121 of second ground plane 15 contiguous the first ground planes, and be electrically connected to the first ground plane 12 via metal wire 16; The line of rabbet joint 17 is positioned on the second ground plane 15, and adjacent metal lines 16.The length of the line of rabbet joint 17 and width should be respectively at least 20mm (millimeter, millimeter) and 0.3mm.
Fig. 2 is according to the structure chart of the second embodiment of antenna of the present invention, comprises: medium substrate 11, the first ground plane 12, radiation assembly 23, the second ground plane 15 and the line of rabbet joint 17.The first ground plane 12 is formed on medium substrate 11 with etching or printing technology; Radiation assembly 23 is formed on medium substrate 11 with etching or printing technology, and forms the radiation assembly of dual-band antenna or short-circuit monopole antenna.Radiation assembly 23 has antenna load point 231 and short dot 232, and antenna load point 231 is electrically connected to the signal source 14 being positioned on medium substrate 11, and short dot 232 is electrically connected to the first ground plane 12; One side 121 of second ground plane 15 contiguous the first ground planes, and be electrically connected to the first ground plane 12 via metal wire 16; The line of rabbet joint 17 is positioned on the second ground plane 15, and adjacent metal lines 16.The length of the line of rabbet joint 17 and width should be respectively at least 20mm and 0.3mm.
Fig. 3 is for returning to loss figure according to the second embodiment of antenna of the present invention.Wherein transverse axis represents frequency of operation, and loss is returned in longitudinal axis representative.In the present embodiment, the first ground plane 12 length are about 100mm, width is about 60mm, and etching or be printed on the glass medium substrate 11 that thickness is 0.8mm; The area of radiation assembly is 10 * 60mm
2, and etching or be printed on glass medium substrate 11; The length of the second ground plane 15 is about 100mm, width is about 60mm, and is electrically connected to the first ground plane 12 via metal wire 16; The length of the line of rabbet joint 17 is about 35mm, width is about 1.5mm.From laboratory test results, under 6dB returns to loss definition, according to the first operational frequency bands 31 of the second embodiment of antenna of the present invention can contain GSM850/900 (824～894/890～960MHz) frequency band, antenna the second operational frequency bands 32 can contain GSM 1800/1900 (1710～1880/1850～1990MHz) frequency band.At this, should be noted when when the line of rabbet joint 17 not being set in the second embodiment of antenna of the present invention, the characteristic of radiation assembly 23 is subject to the impact of the second ground plane 15 larger, in Fig. 3, result can find out that the frequency range of the first operational frequency bands 33 declines to a great extent, cannot contain GSM850/900 frequency band, the second 34 of operational frequency bands are roughly unaffected.
Fig. 4 is according to the structure chart of the 3rd embodiment of antenna of the present invention, and wherein the first ground plane 12 is parallel each other with the second ground plane 45, and other antenna structure is similar to the second embodiment.
Fig. 5 is for returning to loss figure according to the 3rd embodiment of antenna of the present invention.From laboratory test results, at 6dB, return under loss definition, according to the first operational frequency bands 31 of the first operational frequency bands 51 of the 3rd embodiment of antenna of the present invention and the second embodiment, can contain GSM850/900 frequency band, and the second operational frequency bands 52 of the 3rd embodiment can contain GSM1800/1900 frequency band with the second operational frequency bands 32 of antenna the second embodiment.At this, should be noted that according to the 3rd embodiment of antenna of the present invention, because inserting the line of rabbet joint 47, the characteristic of radiation assembly 23 is subject to the impact of the second ground plane 45 hardly.
Fig. 6 is according to the structure chart of the 4th embodiment of antenna of the present invention, and wherein the line of rabbet joint 67 is L shaped, and is positioned at the second ground plane 65, and other antenna structure is similar to the first embodiment.The fourth embodiment of the present invention also can obtain the result approximate with the first embodiment.
Fig. 7 is according to the structure chart of the 5th embodiment of antenna of the present invention, and wherein metal wire 76 and the line of rabbet joint 77 are roughly positioned at the centre position of the second ground plane 75, and this line of rabbet joint 77 adjacent metal lines 76 still, and other antenna structure is similar to the first embodiment.The fifth embodiment of the present invention also can obtain the result approximate with the first embodiment.
Fig. 8 is according to the structure chart of the 6th embodiment of antenna of the present invention, wherein the second ground plane 85 is close to a side 821 of the first ground planes, and be electrically connected to the first ground plane 82 via metal wire 16, and the line of rabbet joint 87 is positioned on the first ground plane 82, and other antenna structure is similar to the first embodiment.The sixth embodiment of the present invention also can obtain the result approximate with the first embodiment.
Fig. 9 is according to the structure chart of the 7th embodiment of antenna of the present invention, wherein the second ground plane 15 is close to a side 921 of the first ground planes, and be electrically connected to the first ground plane 12 via metal wire 16, and the line of rabbet joint 97 can be positioned on the first ground plane 92 and the second ground plane 15 simultaneously, and other antenna structure is similar to the first embodiment.The seventh embodiment of the present invention also can obtain the result approximate with the first embodiment.
Be different from general Antenna Design, antenna according to the present invention provides a kind of mobile communication antenna that reduces ground plane effect that has, it can will be applied to the Antenna Design of stand hand-set originally, directly apply among clamshell phone, now general antenna performance is subject to the factor that system ground changes and can be down to minimum, therefore need not change under the situation of antenna size, characteristic when its antenna performance is applied to stand hand-set with script is approximate, and therefore antenna of the present invention quite meets the demand of current cell phone.
More than the embodiment described in explanation is only explanation principle of the present invention and effect thereof, rather than restriction the present invention.Therefore, those skilled in the art can modify to above-described embodiment without prejudice to spirit of the present invention and change.Scope of the present invention should be as claim scope of the present invention.
Claims (8)
1. a mobile communication antenna, is characterized in that comprising:
Medium substrate;
The first ground plane, it is positioned on described medium substrate;
Radiation assembly, it is positioned on described medium substrate or is adjacent to described medium substrate, and this radiation assembly is also electrically connected to the signal source being positioned on this medium substrate;
The second ground plane, a side of its contiguous described the first ground plane, and be electrically connected to this first ground plane via metal wire; And
The line of rabbet joint, it is positioned on described the second ground plane, and contiguous described metal wire, and has towards an opening of a described side of described the first ground plane.
2. mobile communication antenna according to claim 1, is characterized in that described the first ground plane is formed on described medium substrate with etching or printing technology.
3. mobile communication antenna according to claim 1, is characterized in that described line of rabbet joint length is at least 20 millimeters.
4. mobile communication antenna according to claim 1, is characterized in that described slot width is at least 0.3 millimeter.
5. a mobile communication antenna, is characterized in that comprising:
Medium substrate;
The first ground plane, it is positioned on described medium substrate;
Radiation assembly, it is positioned on described medium substrate or is adjacent to described medium substrate, and this radiation assembly is also electrically connected to the signal source being positioned on this medium substrate;
The second ground plane, a side of its contiguous described the first ground plane, and be electrically connected to this first ground plane via metal wire; And
The line of rabbet joint, is positioned on described the first ground plane, and contiguous described metal wire, and has towards an opening of a described side of described the second ground plane.
6. mobile communication antenna according to claim 5, is characterized in that described the first ground plane is formed on described medium substrate with etching or printing technology.
7. mobile communication antenna according to claim 5, is characterized in that described line of rabbet joint length is at least 20 millimeters.
8. mobile communication antenna according to claim 5, is characterized in that at least 0.3 millimeter of described slot width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910132987.1A CN101853985B (en) | 2009-04-01 | 2009-04-01 | Mobile communication antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910132987.1A CN101853985B (en) | 2009-04-01 | 2009-04-01 | Mobile communication antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101853985A CN101853985A (en) | 2010-10-06 |
| CN101853985B true CN101853985B (en) | 2014-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910132987.1A Active CN101853985B (en) | 2009-04-01 | 2009-04-01 | Mobile communication antenna |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101325285A (en) * | 2008-07-17 | 2008-12-17 | 圆刚科技股份有限公司 | Digital television antenna |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI258891B (en) * | 2005-09-22 | 2006-07-21 | Ind Tech Res Inst | Mobile phone antenna |
| WO2008084273A2 (en) * | 2006-12-21 | 2008-07-17 | Nokia Corporation | An antenna device |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101325285A (en) * | 2008-07-17 | 2008-12-17 | 圆刚科技股份有限公司 | Digital television antenna |
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| CN101853985A (en) | 2010-10-06 |
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