CN201838715U - Chip type antenna structure - Google Patents
Chip type antenna structure Download PDFInfo
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- CN201838715U CN201838715U CN2010202772348U CN201020277234U CN201838715U CN 201838715 U CN201838715 U CN 201838715U CN 2010202772348 U CN2010202772348 U CN 2010202772348U CN 201020277234 U CN201020277234 U CN 201020277234U CN 201838715 U CN201838715 U CN 201838715U
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- chip
- shaped antenna
- electrode
- antenna structure
- ground plane
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- 230000005855 radiation Effects 0.000 claims abstract description 56
- 239000002184 metal Substances 0.000 claims abstract description 46
- 229910052751 metal Inorganic materials 0.000 claims abstract description 46
- 239000000463 material Substances 0.000 claims abstract description 21
- 239000000758 substrate Substances 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 238000005452 bending Methods 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 description 7
- 238000010168 coupling process Methods 0.000 description 7
- 238000005859 coupling reaction Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000004891 communication Methods 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 230000001808 coupling effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000012356 Product development Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The utility model relates to a chip type antenna structure comprising a substrate, a system grounding plane formed on the substrate, a transmission line formed on the substrate, and a chip type antenna arranged on the substrate, wherein the system grounding plane utilizes at least two slits to form a first grounding plane and a second grounding plane; and the chip type antenna is correspondingly arranged on the second grounding plane. The chip type antenna consists of a base material, a feed electrode arranged on the base material and connected with the transmission line, a first grounding electrode arranged on the base material and connected with the first grounding plane, and a radiation metal plane arranged on the base material and provided with a first end and a second end opposite to the first end, wherein the feed electrode and the first end are coupled with the first grounding electrode, and the second end is provided with a second grounding electrode. The chip type antenna structure solves the problem that the whole size of the traditional antenna can not be reduced as a clearance area is needed to protect the antenna from being interfered.
Description
Technical field
The utility model relates to a kind of chip-shaped antenna structure, particularly a kind of chip-shaped antenna structure that need not use the headroom district and have the good impedance match characteristic.
Background technology
Along with the fast development of wireless communication industry, each class of electronic devices, for example mobile phone, computer, network etc. have all possessed the function that the radio communication utilized reaches the signal transmission at present.Radio communication is mainly launched and the equipment that receives is signal transceiver and installing antenna thereon, the mobile communication product development is flourishing, such as mobile phone, notebook computer, PDA(Personal Digital Assistant), wireless network base station products such as (AP), each application end all requires product can dwindle its size as much as possible.
Yet the miniaturization of electronic product but causes can keep for the space of antenna more and more littler in the casing, but the existence of antenna itself must occupy the size of certain space, exists because of antenna need have certain area, can have preferable antenna performance; And must keep a headroom district at the antenna periphery, avoid peripheral metal object, for example ground plane, telephone transmitter, battery, connector etc. cause the interference that signal receives, so cause the difficulty in the mobile communication product design, make the miniaturization of electronic product bottleneck occur.
On the other hand, also have the dealer directly to design antenna structure on the system ground, yet its antenna size also can't further dwindle, and antenna performance is also non-good.
Summary of the invention
Main purpose of the present utility model, be to provide a kind of chip-shaped antenna structure, its antenna primary radiation metal is electrically connected in system ground via first, second grounding electrode, make the system ground equivalence be the extension in aerial radiation path, make antenna can not be subjected to the interference of system ground or other metal environment, to solve the problem that tradition must be provided with the headroom district.
A purpose more of the present utility model, be to provide a kind of chip-shaped antenna structure, it structurally adopts the feed-in structure of dual coupling to reach the feed-in of signal, to increase the capacitive character of antenna equivalently, and then the reactive of payment antenna itself, therefore, antenna of the present utility model has good impedance matching, to promote the radiation characteristic of antenna; Again, the utility model more utilizes the mutual coupling effect of first grounding electrode and feed electrode, radiation metal face, is equivalent to the circuit characteristic of the serial or parallel connection of a plurality of electric capacity with generation, and then can adjusts more diversified, trickleer impedance matching.
In order to achieve the above object, the utility model provides a kind of chip-shaped antenna structure, and it comprises substrate, take shape in system ground on this substrate, take shape in the transmission line on this substrate and be located at chip-shaped antenna on this substrate: this system ground utilization at least two slits and form one first ground plane and one second ground plane wherein; And chip-shaped antenna is located on this second ground plane accordingly.This chip-shaped antenna comprises: a base material; One is located at the feed electrode on this base material, and it is connected in this transmission line; One is located at first grounding electrode on this base material, and it is connected in this first ground plane; An and radiation metal face of being located on this base material, this radiation metal mask has one first end to reach and this first end second opposed end, wherein, this feed electrode, this first end and this first grounding electrode intercouple, and this second end forms one second grounding electrode.
A preferred embodiment as above-mentioned chip-shaped antenna structure, wherein, this base material has an end face, a bottom surface, a leading flank and a trailing flank, this radiation metal mask has the primary radiation portion that is formed in this end face, and along this leading flank and this first end of this trailing flank elongation moulding and this second end, this first grounding electrode and this feed electrode all take shape in this leading flank respectively in this primary radiation portion.
As a preferred embodiment of above-mentioned chip-shaped antenna structure, wherein, this feed electrode further extends to this bottom surface, to be connected in this transmission line; This first grounding electrode and this second grounding electrode further extend to this bottom surface, to be connected in this first ground plane.
As a preferred embodiment of above-mentioned chip-shaped antenna structure, wherein, this first grounding electrode is located between this first end and this feed electrode.
As a preferred embodiment of above-mentioned chip-shaped antenna structure, wherein, this feed electrode is the T font, and this first grounding electrode also includes the grounded metal of these feed electrode both sides of being located at the T font.
As a preferred embodiment of above-mentioned chip-shaped antenna structure, wherein, this primary radiation portion has a plurality of bendings or is a rectangular configuration.
As a preferred embodiment of above-mentioned chip-shaped antenna structure, wherein, this two slit is L shaped slit.
As a preferred embodiment of above-mentioned chip-shaped antenna structure, wherein, comprise also on this second ground plane that one extends slit, so that this second ground plane forms plural extension path.
As above-mentioned structure, the utility model utilizes first grounding electrode to keep feed electrode not to be subjected near the interference of metal, and system ground can be used as the extension in aerial radiation path, make antenna can not be subjected to the interference of system ground or other metal environment, so solve tradition with the headroom district keep antenna interference-free caused the antenna overall dimensions to dwindle problem.On the other hand, the utility model utilizes the characteristic equivalence of dual coupling, mutual coupling to go out the series/parallel characteristic of a plurality of electric capacity, forms preferable Antenna Impedance Matching to adjust.
For enabling further to understand feature of the present utility model and technology contents, see also following about detailed description of the present utility model and accompanying drawing, yet accompanying drawing only provide with reference to and the explanation usefulness, be not to be used for the utility model is limited.
Description of drawings
Figure 1A is the schematic diagram of chip-shaped antenna structure of the present utility model.
Figure 1B is another schematic diagram of chip-shaped antenna structure of the present utility model.
Fig. 1 C is the vertical view of chip-shaped antenna structure of the present utility model.
Fig. 2 A is the stereogram of the chip-shaped antenna of chip-shaped antenna structure of the present utility model.
Fig. 2 B is the stereogram at another visual angle of the chip-shaped antenna of chip-shaped antenna structure of the present utility model.
Fig. 3 is the vertical view of the substrate of chip-shaped antenna structure of the present utility model.
Fig. 4 A shows a kind of variation pattern of feed electrode, first grounding electrode and radiation metal face.
Fig. 4 B shows the another kind of variation pattern of feed electrode, first grounding electrode and radiation metal face.
Fig. 4 C shows another variation pattern of feed electrode, first grounding electrode and radiation metal face.
Fig. 5 A shows a kind of variation pattern of the primary radiation portion of radiation metal face.
Fig. 5 B shows the another kind of variation pattern of the primary radiation portion of radiation metal face.
The different execution modes of the slit on Fig. 6 A to Fig. 6 D display base plate.
Fig. 7 shows the reflection loss figure of chip-shaped antenna structure of the present utility model.
Fig. 8 shows the field pattern figure of chip-shaped antenna structure of the present utility model.
Description of reference numerals in the above-mentioned accompanying drawing is as follows:
1 chip-shaped antenna structure
10 substrates
11 system grounds
11A first ground plane
11B second ground plane
12 transmission lines
13 chip-shaped antenna 131 base materials
1311 end faces
1312 bottom surfaces
1313 leading flanks
1314 trailing flanks
132 feed electrodes
133 first grounding electrodes
1331 grounded metals
134 radiation metal faces
1341 primary radiation portions
1,342 first ends
1,343 second ends
135 second grounding electrodes
S1, S2 slit
S3 extends slit
Embodiment
The utility model proposes a kind of chip-shaped antenna structure, it can directly place chip-shaped antenna on the system ground, and does not need traditional headroom district, to dwindle the size of chip-shaped antenna structure; Moreover, the utility model utilizes first grounding electrode and feed electrode and primary radiation circuit to form mutual coupling, to reach preferable impedance matching, and because system ground is the part in the primary radiation path of antenna, make chip-shaped antenna structure of the present utility model can not be subjected to the interference of ground plane or other metals, and have quite good antenna performance.
Shown in Figure 1A to Fig. 1 C, below will describe first embodiment of chip-shaped antenna structure 1 of the present utility model in detail.Chip-shaped antenna structure 1 of the present utility model has a substrate 10, a system ground 11, a transmission line 12 and a chip-shaped antenna 13, as shown in the figure, this chip-shaped antenna 13 directly places on the system ground 11 on this substrate 10, and does not need traditional headroom district.Particularly, system ground 11 all can utilize printing or etching technique to take shape in this with transmission line 12 and take shape on this substrate 10, and substrate 10 also can be lamina or multi-layer sheet, and 11 of system grounds take shape on the different surfaces of this substrate 10; In addition, one side of this system ground is plastic at least two slit S1, S2 (as shown in Figure 3), system ground 11 is defined as the first ground plane 11A and the second ground plane 11B, and when 13 pairs on chip-shaped antenna should the second ground plane 11B and be located on this substrate 10, this the first ground plane 11A and the second ground plane 11B can become the part of signal path, so can improve the anti-metal interference characteristic of chip-shaped antenna structure 1 of the present utility model.And in this specific embodiment, this two slit S1, S2 are L shaped slit, and the second ground plane 11B that both defined is rectangle haply.
Shown in Fig. 2 A and Fig. 2 B, chip-shaped antenna 13 comprises base material 131 at least, be located at feed electrode 132 on this base material 131, be located at first grounding electrode 133 on this base material 131 and be located at radiation metal face 134 on this base material 131; And this radiation metal face 134 have one first end 1342 and with these first end, 1342 second opposed end 1343, wherein, first end 1342 of this feed electrode 132, this radiation metal face 134 intercouples with this first grounding electrode 133, to increase the capacitive character of antenna, can offset the reactive of antenna itself effectively, make it have good impedance matching, and then increase the radiation characteristic of antenna.Particularly, this base material 131 has an end face 1311, a bottom surface 1312, a leading flank 1313 and a trailing flank 1314, and this radiation metal face 134 has the primary radiation portion 1341 that is formed in this end face 1311, and this primary radiation portion 1341 is respectively along this leading flank 1313 and these trailing flank 1314 elongation mouldings this first end 1342 and this second end 1343.Please cooperate Fig. 3, the position of chip-shaped antenna 13 is corresponding to this second ground plane 11B, and first grounding electrode 133 and second grounding electrode 135 are connected in this first ground plane 11A, and feed electrode 132 then is connected in this transmission line 12.
This first grounding electrode 133 all takes shape in this leading flank 1313 with this feed electrode 132, and in this specific embodiment, this first grounding electrode 133 is located between first end 1342 and this feed electrode 132 of this radiation metal face 134, therefore, feed electrode 132 directly is not contacted with radiation metal face 134, and utilize the mode FD feed of electromagnetic coupled, in other words, feed electrode 132 can be in order to FD feed with the coupled modes of radiation metal face 134, also can increase the capacitive character of antenna, to offset the reactive of antenna itself effectively; Moreover, first grounding electrode 133 also can produce mutual coupling with first end 1342 of feed electrode 132 and radiation metal face 134, therefore, first end 1342 of this feed electrode 132, this radiation metal face 134 intercouples with this first grounding electrode 133, the effect that is equivalent to two electric capacity with formation is carried out serial or parallel connection, and the adjustment of more diversified, trickleer matched impedance can be provided.
On the one hand, this first grounding electrode 133 further extends to this bottom surface 1312, to be connected in this first ground plane 11A, can avoid feed electrode 132 to be subjected to the interference of other metals, and keep its stable antenna performance again; This second end 1343 then is shaped to one second grounding electrode 135, and it extends to this bottom surface 1312 equally, to be connected in this first ground plane 11A; Feed electrode 132 similarly extends to this bottom surface 1312, to be connected in this transmission line 12; So for signal, signal path can transfer to feed electrode 132 by transmission line 12, be coupled to first end 1342 of radiation metal face 134 again, transfer to the first ground plane 11A and the second ground plane 11B by second grounding electrode 135 again, so can prolong the aerial radiation path, to improve the anti-metal interference characteristic of chip-shaped antenna structure 1 of the present utility model.As Fig. 7 and shown in Figure 8, Fig. 7 shows the reflection loss figure of the antenna of first embodiment; Fig. 8 then shows the field pattern figure of the antenna of first embodiment.
In addition, shown in Fig. 4 A to Fig. 4 C, first end 1342 of this feed electrode 132, this radiation metal face 134 also can have multiple variation pattern with the mode of this first grounding electrode 133, for example, Fig. 4 B shows that this feed electrode 132 can be the T font, and this first grounding electrode 133 also includes the grounded metal 1331 of these feed electrode 132 both sides of being located at the T font, to be applied to multi frequency system.In other words, the utility model does not limit shape, quantity, the relative position of above-mentioned electrode structure, only need make first end 1342 of this feed electrode 132, this radiation metal face 134 and the effect that this first grounding electrode 133 forms mutual coupling promptly belong to category of the present utility model.
Shown in Fig. 5 A and Fig. 5 B, the primary radiation portion 1341 of this radiation metal face 134 also can have different variation patterns, and for example this primary radiation portion 1341 has a plurality of bendings, horizontal bending shown in Fig. 5 A or the vertical bending shown in Fig. 5 B; Or primary radiation portion 1341 is a rectangular configuration (as first embodiment), and in other words, the mode of primary radiation portion 1341 can be adjusted according to the difference of frequency of operation or other conditions.
Moreover shown in Fig. 6 A to Fig. 6 D, the second ground plane 11B also can have multiple variation pattern, and for example Fig. 6 A and Fig. 6 B show the slit S2 of different modes, to form long path, so that the effect of frequency modulation, frequency reducing to be provided; In addition, the second ground plane 11B of Fig. 6 C more is formed with and extends slit S3, to define two or more extension paths at the second ground plane 11B, uses for double frequency/multi frequency system; Similarly, Fig. 6 D also defines two extension paths on the second ground plane 11B, use for dual-frequency system.Therefore, can make antenna of the present utility model be widely used in the system of double frequency/multifrequency by the adjustment of narrow slit structure.
In view of the above, the utility model utilization is electrically connected at the electrode (comprising first grounding electrode 133 and second grounding electrode 135) of system ground 11, can directly place chip-shaped antenna 13 on the system ground, and do not need traditional headroom district, in other words, can keep near the interference of the metal of feed electrode 132 not being subjected to and keep stable antenna impedance; Also because system ground 11 is all the part of antenna radiator, makes chip-shaped antenna 13 of the present utility model not be subjected to the interference of ground plane or other metal environment and keep certain antenna performance.
In sum, the utlity model has following all advantage:
1, the utility model adopts the feed-in structure of dual coupling with FD feed, utilize the feed-in of electromagnetic coupled to increase the capacitive character of antenna equivalently, and then offset the reactive of antenna itself, therefore, antenna of the present utility model has good impedance matching, to promote the radiation characteristic of antenna.In addition, the utility model more utilizes the mutual coupling effect of first grounding electrode and feed electrode, radiation metal face, is equivalent to the characteristic of the serial or parallel connection of two electric capacity with generation, and then adjusts more diversified, trickleer impedance matching.
2, see it from the angle of system ground in addition, because antenna primary radiation metal (being the radiation metal face) is electrically connected in system ground via first, second grounding electrode, and the effect of utilization at least two slits, make the system ground equivalence be the extension in aerial radiation path, the effect of the ceramic dielectric (being base material) by high K value, can effectively reduce the equivalent path of antenna, make chip-shaped antenna can reach the purpose of miniaturization.
3 moreover, the utility model more utilizes the extension of system ground as the aerial radiation path, makes antenna can not be subjected to the interference of system ground or other metal environment, and keeps good antenna performance, to solve the problem that tradition must be provided with the headroom district.
The above only is a preferable possible embodiments of the present utility model, and is non-so limit to claim of the present utility model, so the equivalence techniques that uses the utility model specification and accompanying drawing content to do such as changes, all is contained in the scope of the present utility model.
Claims (8)
1. a chip-shaped antenna structure is characterized in that, comprises:
One substrate;
One system ground, it takes shape on this substrate, wherein this system ground utilization at least two slits and form one first ground plane and one second ground plane;
One transmission line, it takes shape on this substrate; And
One chip-shaped antenna, it is to should second ground plane and be located on this substrate, and this chip-shaped antenna comprises:
One base material;
One is located at the feed electrode on this base material, and it is connected in this transmission line;
One is located at first grounding electrode on this base material, and it is connected in this first ground plane; And
One is located at the radiation metal face on this base material, this radiation metal mask has one first end and one and this first end second opposed end, wherein, this feed electrode, this first end and this first grounding electrode intercouple, and this second end forms one second grounding electrode.
2. chip-shaped antenna structure as claimed in claim 1, it is characterized in that, this base material has an end face, a bottom surface, a leading flank and a trailing flank, this radiation metal mask has the primary radiation portion that is formed in this end face, and along this leading flank and this first end of this trailing flank elongation moulding and this second end, this first grounding electrode and this feed electrode all take shape in this leading flank respectively in this primary radiation portion.
3. chip-shaped antenna structure as claimed in claim 2 is characterized in that this feed electrode further extends to this bottom surface, to be connected in this transmission line; This first grounding electrode and this second grounding electrode further extend to this bottom surface, to be connected in this first ground plane.
4. chip-shaped antenna structure as claimed in claim 2 is characterized in that, this first grounding electrode is located between this first end and this feed electrode.
5. chip-shaped antenna structure as claimed in claim 2 is characterized in that this feed electrode is the T font, and this first grounding electrode also includes the grounded metal of these feed electrode both sides of being located at the T font.
6. chip-shaped antenna structure as claimed in claim 2 is characterized in that, this primary radiation portion has a plurality of bendings or is a rectangular configuration.
7. chip-shaped antenna structure as claimed in claim 2 is characterized in that, this two slit is L shaped slit.
8. chip-shaped antenna structure as claimed in claim 2 is characterized in that, comprises also on this second ground plane that one extends slit, so that this second ground plane forms plural extension path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202772348U CN201838715U (en) | 2010-07-29 | 2010-07-29 | Chip type antenna structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202772348U CN201838715U (en) | 2010-07-29 | 2010-07-29 | Chip type antenna structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201838715U true CN201838715U (en) | 2011-05-18 |
Family
ID=44008818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202772348U Expired - Lifetime CN201838715U (en) | 2010-07-29 | 2010-07-29 | Chip type antenna structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201838715U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107645038A (en) * | 2016-07-20 | 2018-01-30 | 华为技术有限公司 | A kind of antenna and mobile terminal |
| CN107994342A (en) * | 2017-11-24 | 2018-05-04 | 深圳市盛路物联通讯技术有限公司 | Chip-type antenna |
| CN111755422A (en) * | 2019-03-26 | 2020-10-09 | 创发信息科技（苏州）有限公司 | Selectively engageable ground shield structure |
-
2010
- 2010-07-29 CN CN2010202772348U patent/CN201838715U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107645038A (en) * | 2016-07-20 | 2018-01-30 | 华为技术有限公司 | A kind of antenna and mobile terminal |
| CN107645038B (en) * | 2016-07-20 | 2019-11-29 | 华为技术有限公司 | A kind of antenna and mobile terminal |
| US11056781B2 (en) | 2016-07-20 | 2021-07-06 | Huawei Technologies Co., Ltd. | Antenna and mobile terminal |
| CN107994342A (en) * | 2017-11-24 | 2018-05-04 | 深圳市盛路物联通讯技术有限公司 | Chip-type antenna |
| CN107994342B (en) * | 2017-11-24 | 2021-01-26 | 深圳市盛路物联通讯技术有限公司 | Chip type antenna |
| CN111755422A (en) * | 2019-03-26 | 2020-10-09 | 创发信息科技（苏州）有限公司 | Selectively engageable ground shield structure |
| CN111755422B (en) * | 2019-03-26 | 2022-05-31 | 达发科技(苏州)有限公司 | Selectively engageable ground shield structure |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110518 |