CN101771189B - Broadband notebook antenna - Google Patents
Broadband notebook antenna Download PDFInfo
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- CN101771189B CN101771189B CN200910258710.3A CN200910258710A CN101771189B CN 101771189 B CN101771189 B CN 101771189B CN 200910258710 A CN200910258710 A CN 200910258710A CN 101771189 B CN101771189 B CN 101771189B
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Abstract
The invention discloses a broadband notebook antenna, aiming at providing the broadband notebook antenna which has the design of attenuation band, can restrain redundant frequency band, and can reduce the interference to circumjacent wireless facilities. The broadband notebook antenna comprises a medium plate, a radiation surface and a horizontal plane, wherein the radiation surface is rectangular, the medium plate is flat, one surface of the medium plate is fit with the radiation surface, the other surface of the medium plate is fit with the horizontal plane, the radiation surface is provided with two symmetrical gaps, the two symmetrical gaps are symmetrical with each other relative to one symmetry axis of the radiation surface, one end of the symmetrical gap is provided with an opening, the other end of the symmetrical gap is sealed, the symmetrical gaps are parallel with two edge lines of the radiation surface, and the radiation surface is connected with a micro-strip feeder line. With the symmetrical gaps, the antenna has the design of the attenuation band, has pertinence, does not occupy the redundant frequency band, and saves the resource of frequency band. The broadband notebook antenna is applied to a notebook computer with a wireless network card.
Description
Technical field
The present invention relates to a kind of radio-frequency antenna, more particularly, the present invention relates to a kind of broadband notebook antenna.
Background technology
In recent years, along with the fast development of wireless communication technology, WLAN (wireless local area network) (WLAN) standard is further perfect, makes WLAN become the another great topic after 3G.The whole world interconnected inserting of microwave (WiMAX) as emerging wireless access wide band technology has also obtained fast development equally.WLAN wireless network card and WiMAX application are as the indispensability configuration of notebook computer, and the importance of the notebook antenna design of its corresponding frequency band is self-evident.And the designing requirement of notebook pursuit miniaturization has brought larger difficulty and challenge also to the design of notebook antenna.
China discloses the document that notification number is CN201285795Y on August 5th, 2009, title is a kind of flat plate multi-frequency antenna for notebook computer, and it comprises a pcb board carrier and is distributed in antenna radiation unit, match circuit and the metal framework structure part on pcb board carrier.Described antenna radiation unit is connected with metal framework structure part by match circuit, metal framework structure part as metal be connected with the ground connection thing on notebook computer, antenna radiation unit connects the radio circuit in notebook computer by coaxial cable.The weak point of this scheme is not arrange stopband, has taken unwanted frequency band, and the wireless facilities of periphery is had to certain interference, and structure is comparatively complicated, and it is convenient not to manufacture.
Summary of the invention
The object of the invention is to take unnecessary frequency range for prior art, the waste resource of frequency range, produces the deficiency of disturbing to periphery wireless facilities, and a kind of stopband design that has is provided, and suppresses unnecessary frequency range, reduces the broadband notebook antenna that periphery wireless facilities is disturbed.
The present invention is directed to the problems referred to above is solved by the following technical programs: a kind of broadband notebook antenna, comprise dielectric-slab, radiating surface and ground level, described radiating surface is rectangle, described dielectric-slab is flat, the one side of described dielectric-slab is fitted with described radiating surface, the another side of described dielectric-slab is fitted with described ground level, on described radiating surface, have two symmetrical gaps, a symmetry axis symmetry of the relatively described radiating surface in described symmetrical gap, described symmetrical gap one end opening, the other end sealing in described symmetrical gap, described symmetrical gap is parallel with two sidelines of described radiating surface, described radiating surface is connected with microstrip feed line.Symmetrical gap makes unnecessary frequency range (3700MHz-5000MHz) suppressed, and on not impact of the gain of the frequency range of needs (2400MHz-3700MHz and 5000MHz-6000MHz).And by adjusting position and the length in symmetrical gap, can regulate centre frequency (4300MHz left and right) and the bandwidth (1300MHz left and right) of stopband, offer convenience to the debugging of actual production process.Symmetrical gap length has determined stopband center frequency, and the longer stopband center of length frequency is lower, and the shorter stopband center of length frequency is higher.Article two, the spacing in symmetrical gap has determined the size of bandwidth of rejection, and spacing more bandwidth of rejection is narrower, and the less bandwidth of rejection of spacing is wider.
As preferably, four jiaos of the radiating surfaces of described rectangle are fillet.Thereby four jiaos of frequency bands that adopt fillet design can increase current path broadening antenna of radiating surface.Flow to relative limit in the limit that electric current is connected with microstrip feed line from radiating surface, if radiating surface is right angle entirely, every current path length is identical, use the current path that fillet occurs that length is different later instead, the Frequency point that the current path of every kind of length is corresponding different, thus make the frequency band expanded of antenna.
As preferably, described ground level is semicircle.Semicircular ground level makes reverse current path different, has increased the quantity in reverse current path, also broadening the bandwidth of antenna.
As preferably, described microstrip feed line is connected to the mid point on a limit of described radiating surface, and the limit that the limit at the opening place in described symmetrical gap is connected with described microstrip feed line is same.Symmetrical gap can make two symmetrical gaps consistent on the impact of stopband with respect to an axisymmetric design of symmetry of radiating surface, is changing the bandwidth of more easily controlling stopband when symmetrical gap position is adjusted antenna stopband.
The invention has the beneficial effects as follows, by symmetrical gap, make antenna not take unnecessary frequency range, and can meet the Antenna Design of WLAN and the requirement of WiMAX frequency band, its frequency band has covered WLAN (2400-2484/5150-5350/5725-5825MHz) and WiMAX (2500-2690/3400-3690/5250-5850MHz) simultaneously.The present invention is simple in structure, and volume is little, easily manufactured, easily adjusts centre frequency and the bandwidth of stopband, has reduced frequency band and has disturbed mutually.
Accompanying drawing explanation
Fig. 1 is a kind of front schematic view of the present invention;
Fig. 2 is a kind of schematic rear view of the present invention;
Fig. 3 is a kind of left view of the present invention.
In figure: 1, radiating surface, 2, symmetrical gap, 3, microstrip feed line, 4, dielectric-slab, 5, ground level.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the present invention is described in further detail:
Embodiment: a kind of broadband notebook antenna, as shown in Figure 1, it comprises dielectric-slab 4, radiating surface 1 and ground level 5.Dielectric-slab 4 adopts the FR4 material that dielectric constant is 4.4, is rectangle.As shown in Figure 3, radiating surface 1 is printed on dielectric-slab 4, and ground level 5 is printed on the another side of dielectric-slab 4.Radiating surface 1 is the rectangle of the wide 15mm of long 30mm, and four jiaos adopt the fillet that radius is 5mm.Between radiating surface 1 and signal feed-in point, by 50 ohm microstrip feeder lines 3, be connected.Microstrip feed line 3 is connected to the mid point of 1 one longer sides of radiating surface.Microstrip feed line 3 prints at grade with radiating surface 1.The material of radiating surface 1, microstrip feed line 3 and ground level 5 is copper.The direction vertical with radiating surface 1 place plane is vertical direction, and the direction parallel compared with minor face with radiating surface is horizontal direction.As shown in Figure 2, ground level 5 is the semicircle of radius 20mm, and a limit of the straight flange of semicircle and dielectric-slab 4 overlaps and to be connected with the limit of microstrip feed line 3 parallel with radiating surface 1.The symmetry axis of ground level 5 and the intersection point of arc-shaped edges are the summit of ground level 5, and the horizontal range between the tie point of microstrip feed line 3 and radiating surface 1 and the summit of ground level 5 is 1mm.On radiating surface 1, be etched with two wide 1mm, the symmetrical gap 2 of long 11mm, symmetrical gap 2 is parallel with microstrip feed line 3, between two symmetrical gaps at a distance of 22mm.Symmetrical gap 2 is with respect to a symmetry axis symmetry of radiating surface 1, and this symmetry axis overlaps with the symmetry axis in the vertical direction of ground level.Symmetrical gap 2 originates in the limit that radiating surface 1 is connected with microstrip feed line 3.The present invention just covers WLAN (2400-2484/5150-5350/5725-5825MHz) and WiMAX (2500-2690/3400-3690/5250-5850MHz) frequency range, and has suppressed middle 3700MHz-5000MHz frequency range.
Claims (1)
1. a broadband notebook antenna, comprise dielectric-slab, radiating surface and ground level, described radiating surface is rectangle, described dielectric-slab is flat, described dielectric-slab adopts the FR4 material that dielectric constant is 4.4, the one side of described dielectric-slab is fitted with described radiating surface, the another side of described dielectric-slab is fitted with described ground level, it is characterized in that, on described radiating surface, have two wide 1mm, the symmetrical gap of long 11mm, a symmetry axis symmetry of the relatively described radiating surface in described symmetrical gap, article two, between symmetrical gap at a distance of 22mm, described symmetrical gap one end opening, the other end sealing in described symmetrical gap, described symmetrical gap is parallel with two sidelines of described radiating surface, described radiating surface is connected with the microstrip feed line of 50 ohm, the rectangle that radiating surface is the wide 15mm of long 30mm, four jiaos adopt the fillet that radius is 5mm, ground level is the semicircle of radius 20mm, a limit of the straight flange of semicircle and dielectric-slab overlaps and to be connected with the limit of microstrip feed line parallel with radiating surface, the summit that the symmetry axis of ground level and the intersection point of arc-shaped edges are ground level, the horizontal range between the tie point of microstrip feed line and radiating surface and the summit of ground level is 1mm, described symmetrical gap is parallel with described microstrip feed line, described microstrip feed line is connected to the mid point of a longer sides of described radiating surface, and the limit that the limit at the opening place in described symmetrical gap is connected with described microstrip feed line is same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910258710.3A CN101771189B (en) | 2009-12-12 | 2009-12-12 | Broadband notebook antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910258710.3A CN101771189B (en) | 2009-12-12 | 2009-12-12 | Broadband notebook antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101771189A CN101771189A (en) | 2010-07-07 |
| CN101771189B true CN101771189B (en) | 2014-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910258710.3A Expired - Fee Related CN101771189B (en) | 2009-12-12 | 2009-12-12 | Broadband notebook antenna |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103794864B (en) * | 2014-01-18 | 2016-03-30 | 中国计量学院 | The square double-band printed antenna of symmetrical minor matters |
| CN113555681A (en) * | 2021-03-19 | 2021-10-26 | 电子科技大学 | Ultra-wideband butt-heel Vivaldi antenna with high peak power |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1241045A (en) * | 1998-04-30 | 2000-01-12 | 阿尔卡塔尔公司 | Radio communication apparatus and double frequency microstrip antenna |
| CN101246992A (en) * | 2008-03-21 | 2008-08-20 | 东南大学 | Miniaturized ultra-wideband antenna with dual-attenuation band function |
| TW200838033A (en) * | 2007-03-14 | 2008-09-16 | Univ Southern Taiwan Tech | Miniaturized band-rejected printed open slot antenna |
| CN101431183A (en) * | 2008-12-03 | 2009-05-13 | 中国科学技术大学 | Small-sized plane wideband antenna capable of filtering |
| CN201638930U (en) * | 2009-12-12 | 2010-11-17 | 中国计量学院 | Wideband notebook PC antenna |
-
2009
- 2009-12-12 CN CN200910258710.3A patent/CN101771189B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1241045A (en) * | 1998-04-30 | 2000-01-12 | 阿尔卡塔尔公司 | Radio communication apparatus and double frequency microstrip antenna |
| TW200838033A (en) * | 2007-03-14 | 2008-09-16 | Univ Southern Taiwan Tech | Miniaturized band-rejected printed open slot antenna |
| CN101246992A (en) * | 2008-03-21 | 2008-08-20 | 东南大学 | Miniaturized ultra-wideband antenna with dual-attenuation band function |
| CN101431183A (en) * | 2008-12-03 | 2009-05-13 | 中国科学技术大学 | Small-sized plane wideband antenna capable of filtering |
| CN201638930U (en) * | 2009-12-12 | 2010-11-17 | 中国计量学院 | Wideband notebook PC antenna |
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| CN101771189A (en) | 2010-07-07 |
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Owner name: LIN HAILI Free format text: FORMER OWNER: CHINA JILIANG UNIVERSITY Effective date: 20150423 |
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Free format text: CORRECT: ADDRESS; FROM: 310018 HANGZHOU, ZHEJIANG PROVINCE TO: 201103 CHANGNING, SHANGHAI |
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Effective date of registration: 20150423 Address after: 201103 No. 900, Changning District, Shanghai, West Yan'an Road Patentee after: Lin Haili Address before: 310018 School of information engineering, Xiasha China Jiliang University, Hangzhou, Zhejiang Patentee before: China Jiliang University |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20171212 |