CN100481615C - Dual-frequency slot type antenna - Google Patents
Dual-frequency slot type antenna Download PDFInfo
- Publication number
- CN100481615C CN100481615C CN 200510004103 CN200510004103A CN100481615C CN 100481615 C CN100481615 C CN 100481615C CN 200510004103 CN200510004103 CN 200510004103 CN 200510004103 A CN200510004103 A CN 200510004103A CN 100481615 C CN100481615 C CN 100481615C
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- slit
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- slot type
- type antenna
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Abstract
A double frequency slit-type antenna characterizes in opening a first slot and a second slot in different lengths on a conductor, connecting the feed-in point and the earth end of a signal line to two side edges of the first slot to feed-in different frequency signals from the same feed-in point and forming a first a resonant frequency on the first slot coupled to the second slot to form a second resonant frequency, the first slot has mutual parallel first and second edges and nonparallel third and fourth edges.
Description
The application is dividing an application of No. 01121477.5 application for a patent for invention.
Technical field
Dual-frequency slot type antenna of the present invention is based on slot type antenna, by same load point, utilizes the combination of two groups of flutings, reaches the double-frequency resonance effect, to receive and dispatch two kinds of different frequencies.
Background technology
Because the needs of wireless transmission, general laptop or other radio transmission apparatus are provided with antenna as transmission/receiving element, and the wireless transmission function of signal is provided by the transmission/receiving element of antenna.A kind of execution mode of aforementioned antenna is slot type antenna (SlotAntenna), this slot type antenna is to constitute with a sheet metal, the antenna signal by the feed-in of antenna load point after, slit structure by metallic conductor, make signal form resonance and produce the emission signal, reach the purpose of wireless transmission at slit.But the use of this kind slot type antenna will be confined to special frequency channel, form single-band antenna, and in the epoch that science and technology is maked rapid progress, the single design of this kind can't be in diversified frequency band utilization.
Please refer to shown in Figure 1, vertical view for traditional slot type antenna 1, this slot type antenna 1 is to be made of a conductor 10, aforementioned conductor 10 is provided with a slit 11, load point 12 and earth terminal 13 are located at the both sides of slit 11 respectively, the signal line of coaxial cable 14 is to cross over slit 11 and be overlapped in load point 12, and the ground network of aforementioned coaxial cable 14 then is fixed in earth terminal 13.After signal is via load point 12 feed-ins, form resonance at slit 11, reach the effect of wireless transmission.
Slot type antenna according to the aforementioned conventional technology, though can adjust frequency by the change of slit slotting length, or by the change of load point position to influence the impedance whole frequency of a step of going forward side by side, but the corresponding load point of formed any one group of slot length position, only a single-band antenna can be formed, the double frequency demand of two kinds of different frequency bands can't be suitable for simultaneously.The wireless transmission frequency of using with laptop is an example, bluetooth standard (Bluetooth) and IEEE802.11B use identical 2.4GHz frequency band at present, but the application of GPRS and IEEE82.11a then is 900MHz, 1800MHz and 5.5GHz, the slot type antenna of conventional art promptly can't be suitable for these two kinds of standards simultaneously, causes disappearance and inconvenience in the use.
Summary of the invention
The invention provides a kind of dual-frequency slot type antenna, on a conductor, offer first slit and second slit of different length, the load point of one signal line and earth terminal are connected to the first slit both sides of the edge, make the different frequency signal can be via same load point feed-in, and form one first resonance frequency at aforementioned first slit respectively, and be coupling in aforementioned second slit and form one second resonance frequency; Wherein the long limit of this second slit is parallel to each other and minor face is not parallel to each other mutually, and the long limit of second slit is parallel with the long limit of first slit or on same straight line.
Dual-frequency slot type antenna of the present invention and plurality of advantages thereof and feature will and appendedly be further understood graphic from following detailed description.
Description of drawings
Fig. 1 is the vertical view of traditional slot type antenna.
Fig. 2 is the vertical view of dual-frequency slot type antenna of the present invention.
Fig. 3 is the structure perspective view of first embodiment of dual-frequency slot type antenna of the present invention.
Fig. 4 is the structure perspective view of second embodiment of dual-frequency slot type antenna of the present invention.
Fig. 5 is the embodiment figure of dual-frequency slot type antenna of the present invention.
The main element symbol is to as directed
The 2---dual-frequency slot type antenna
The 20---conductor
The 201---first surface
The 202---second surface
21---first slit
22---second slit
The 23---load point
The 24---earth terminal
241,242---projection
The 25---coaxial cable
261,262---hole
271,272---screw
The 3---laptop
The 31---LCD screen
The 32---panel rack
The 33---shell
Embodiment
At first please referring to Fig. 2, vertical view for dual-frequency slot type antenna 2 of the present invention, its major part is constituted by the conductor 20 of sheet metal or other materials, this conductor 20 is provided with first slit 21 and second slit 22 of two different lengths, one side of aforementioned first slit 21 is provided with load point 23, opposite side with respect to aforementioned load point 23 is provided with earth terminal 24, make the ground network of coaxial cable 25 be articulated in aforementioned earth terminal 24, and make the signal line of coaxial cable 25 cross over first slit 21 and be articulated in aforementioned load point 23.When antenna signal during, will form resonance at first slit, 21 places and produce signal via load point 23 feed-ins.When antenna during, then can be coupling in second slit, 22 places and form resonance with the signal feed-in load point 23 of another frequency.
Then please referring to Fig. 3, structure perspective view for first embodiment of the invention, wherein load point 23 is a salient point, the signal line of coaxial cable 25 is to be fixed in load point 23 in the mode of welding, aforementioned earth terminal 24 further upwards encircles two projections 241 and 242 of symmetry mutually about turnover and formation, to its objective is and easily cable to be positioned on the fixed position of antenna in order assembling, because assembling location inaccuracy can influence antenna impedance and antenna characteristics, and between projection 241 and 242, form a draw-in groove, coaxial cable 25 can be placed in the draw-in groove, and its ground network is fixed in projection 241 and 242 by welding manner.The conductor 20 of present embodiment can further make earth terminal 24 extend to bigger ground plane with welding or other modes, so that preferable signal laser propagation effect to be provided.In addition, hole 261 and 262 as shown in Figure 3 also can be set, and earth terminal 24 be pivoted to bigger ground plane with screw.
The structure perspective view of second embodiment of the invention is please referring to shown in Figure 4, wherein, conductor 20 comprises first surface 201 and second surface 202, and aforementioned first slit 21 and second slit 22 are formed at first surface 201 and second surface 202 respectively, when antenna signal during, will form resonance at first slit, 21 places of first conductor 201 and produce signal via load point 23 feed-ins.Aforementioned first surface 201 can be 0 °, 90 °, 180 ° or other special angles with the angle of second surface 202.When aforementioned angle be 0 ° or 180 the time first surface 201 be formed at same plane with second surface 202.When first surface 201 and second surface 202 coplane and when forming an angle not, because of the variation meeting of this angle resonance frequency to double frequency changes.When antenna during with the signal feed-in load point 23 of another frequency, second slit, 22 places that then can be coupled to second conductor 202 form the resonance frequency that is different from first slit 21.Present embodiment can and be controlled the angle of cut of first conductor 201 and second conductor 202 by multi-form slit, constitutes the dual-frequency slot type antenna of various combination of frequencies.Certainly, present embodiment does not limit the juncture of first conductor 201 and second conductor 202, all one-body molded mode, bolt or the welding of current lead-through all can.
The embodiment of dual-frequency slot type antenna 2 of the present invention is please referring to shown in Figure 5, wherein the lcd screen 31 of laptop 3 is to be fixed on the shell 33 by panel rack 32, aforementioned conductor 20 is to be articulated in panel rack 32 and dual-frequency slot type antenna 2 can be embedded in the shell 33 fully by screw 271,272, makes laptop 3 have double frequency by present embodiment and transmits and the function that receives.Present embodiment does not limit and is applied to laptop, all equipment that utilizes wireless transmission, and for example PDA(Personal Digital Assistant) etc. all can.
Certainly, conductor profile of the present invention is not defined as rectangle, all can all can with other camber line bodies that produce double-frequency resonance via adjusting slit and load point.
The effect of invention
Main purpose of the present invention provides a kind of dual-frequency slot type antenna, its be take slot type antenna as The basis utilizes two same load points of slit to form the double-frequency resonance effect, and it is two to reach radio transmission apparatus Keep pouring in the effect of sending/receiving.
Secondly, the present invention is by two slits being arranged at respectively conductor two not coplanar and the formation angle Side is utilized the change of variable angle and the slot length of two slits, can consist of the combination of various frequencies, Reach the effect of slot type antenna double frequency transmission.
In addition, the present invention is applied to laptop or personal digital assistant, slot type antenna of the present invention can be embedded in the shell of main frame fully, reaches the effect of laptop or personal digital assistant double frequency transmission.
Claims (8)
1. dual-frequency slot type antenna, on a conductor, offer first slit and second slit of different length, the load point of one signal line and earth terminal are connected to the first slit both sides of the edge, make the different frequency signal can be via same load point feed-in, and form one first resonance frequency at aforementioned first slit respectively, and be coupling in aforementioned second slit and form one second resonance frequency; Wherein the long limit of this second slit is parallel to each other and minor face is not parallel to each other mutually, and the long limit of second slit is parallel with the long limit of first slit or on same straight line.
2. dual-frequency slot type antenna according to claim 1, wherein said first slit is arranged at a first surface, and described second slit is arranged at a second surface, and this first surface and second surface must form an angular relationship, and this angular relationship is obtuse angle, right angle or acute angle.
3. dual-frequency slot type antenna as claimed in claim 2, wherein, this angular relationship gets according to the antenna receiving-sending characteristic fine setting of being desired.
4. dual-frequency slot type antenna as claimed in claim 1 wherein changes this and states the double frequency combination that first slit and second slit fluting size can form different frequency.
5. dual-frequency slot type antenna as claimed in claim 1, wherein this load point forms a salient point, is connected with this salient point exactly in order to the feed-in signal line, and gets an accurate feed-in position.
6. dual-frequency slot type antenna as claimed in claim 2 wherein has the earth terminal that forms a location draw-in groove on this first surface, in order to the ground connection signal line exactly with this locating groove clamping, and an accurate earthing position.
7. dual-frequency slot type antenna as claimed in claim 6, wherein this load point forms a salient point, be connected with this salient point exactly in order to the feed-in signal line, and an accurate feed-in position, and, described dual-frequency slot type antenna also comprises the coaxial cable of a transmission signal, the ground network of this coaxial cable and this locating groove clamping, and the signal line of this coaxial cable is connected with this salient point.
8. the electronic installation with double-frequency wireless transfer function comprises the described dual-frequency slot type antenna of one of claim 1-7.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01121477 CN1204653C (en) | 2001-06-12 | 2001-06-12 | Slotted dual-frequency antenna |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01121477 Division CN1204653C (en) | 2001-06-12 | 2001-06-12 | Slotted dual-frequency antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1632986A CN1632986A (en) | 2005-06-29 |
| CN100481615C true CN100481615C (en) | 2009-04-22 |
Family
ID=4664479
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01121477 Expired - Lifetime CN1204653C (en) | 2001-06-12 | 2001-06-12 | Slotted dual-frequency antenna |
| CN 200510004103 Expired - Lifetime CN100481615C (en) | 2001-06-12 | 2001-06-12 | Dual-frequency slot type antenna |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01121477 Expired - Lifetime CN1204653C (en) | 2001-06-12 | 2001-06-12 | Slotted dual-frequency antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN1204653C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103682581B (en) * | 2012-09-17 | 2015-10-28 | 宏碁股份有限公司 | Mobile device |
| JP6222103B2 (en) | 2012-11-12 | 2017-11-01 | 日本電気株式会社 | Antenna and wireless communication device |
| CN104538741B (en) * | 2014-12-17 | 2017-12-26 | 小米科技有限责任公司 | Slot antenna and the electronic equipment with conductive bezels |
| CN106159416B (en) * | 2015-04-24 | 2020-03-31 | 富士康(昆山)电脑接插件有限公司 | Antenna and combination thereof |
| WO2017035730A1 (en) * | 2015-08-31 | 2017-03-09 | 华为技术有限公司 | Slot antenna and terminal device |
| CN107516761B (en) * | 2017-08-01 | 2020-11-17 | 上海安费诺永亿通讯电子有限公司 | WLAN antenna of metal body mobile terminal |
-
2001
- 2001-06-12 CN CN 01121477 patent/CN1204653C/en not_active Expired - Lifetime
- 2001-06-12 CN CN 200510004103 patent/CN100481615C/en not_active Expired - Lifetime
Non-Patent Citations (2)
| Title |
|---|
| 宽缝微带天线阻抗特性的时域有限差分法分析. 卢万铮等.微波学报，第15卷第4期. 1999 |
| 宽缝微带天线阻抗特性的时域有限差分法分析. 卢万铮等.微波学报，第15卷第4期. 1999 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1632986A (en) | 2005-06-29 |
| CN1391308A (en) | 2003-01-15 |
| CN1204653C (en) | 2005-06-01 |
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| C10 | Entry into substantive examination | ||
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20090422 |
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| CX01 | Expiry of patent term |