CN104953295A - Small-size directional slot antenna - Google Patents
Small-size directional slot antenna Download PDFInfo
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- CN104953295A CN104953295A CN201510334836.XA CN201510334836A CN104953295A CN 104953295 A CN104953295 A CN 104953295A CN 201510334836 A CN201510334836 A CN 201510334836A CN 104953295 A CN104953295 A CN 104953295A
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Abstract
The invention discloses a small-size directional slot antenna, which comprises a metal foil feed structure and a slot structure, wherein the metal foil feed structure is positioned on the upper surface of a plate-shaped medium base plate and comprises a first feed sub structure, a second feed sub structure and a third feed sub structure; the first feed sub structure is connected with the second feed sub structure; the second feed sub structure is divided into two parts by a connecting point of the first feed sub structure and the second feed sub structure; the length difference of the two parts is the 1/4 waveguide wavelength; the third feed structure comprises two feed metal sheets with the same structures; the two feed metal sheets are respectively connected with the two ends of the second feed sub structure; the slot structure is positioned on a grounding board, and comprises a first slot radiation unit, a second slot radiation unit and an isolation slot. The small-size directional slot antenna has the advantages that the structure is compact, the size is small, the cost is low, the integration is easy, and the small-size directional slot antenna is suitable for being applied to the existing small-size wireless terminal.
Description
Technical field
The present invention relates to wireless communication technology field, particularly the miniaturized directional slits antenna of one.
Technical background
In recent years, Wireless Telecom Equipment develops rapidly towards multi-functional, miniaturized direction, many wireless terminals, comprise mobile device and permanent plant, all wish during design that antenna has certain directionality, on the one hand can acknowledge(ment) signal better, the interference of different communication systems can be avoided on the other hand.Meanwhile, in the application that some is concrete, many requirements are also had to antenna.For current wireless terminal, require that antenna structure is compact, lightweight, bandwidth, front and back are than high.
Slot antenna, comparatively commonly microstrip slot antenna, because having coplanar structure small in volume and being easy to the good nature integrated with other components and parts, microstrip slot antenna is usually used on mobile terminal.And in existing directional slits antenna structure, although all have higher front and back ratio, these structures are not that antenna size is comparatively large, be exactly that bandwidth is narrower, be difficult to meet the requirement at present to directional slits antenna.Therefore design a kind of wide-band, miniaturization, high before and after the directional slits antenna of ratio be one of current study hotspot.
2011, the people such as Chien-Jen Wang deliver and are entitled as " Enhancement of pattern directivity for the open slot antenna by utilizing array topology " article on " Microwave and optical technology letters ", article have employed two gap array elements, array element difference half wavelength distance, by 180 degree of difference constant amplitude feeds.Simultaneously in order to increase front and back ratio, eight strip metal bands before gap, are added.Although this structure can obtain very high front and back ratio, its design is complicated on the one hand, takies large-size, is unfavorable for antenna miniaturization; Its groundwork is at a frequency on the other hand, and frequency band is narrow.Therefore this antenna actual application value is limited.
In the same year, the people such as Te-Ling Sun deliver and are entitled as " Design of a microstrip monopole slot antenna with unidirectional radiation characteristics " article on " IEEE Transaction on Antennas and propagation ".On the one hand, article have employed Stepped Impedance gap as radiating element, this effectively increases the bandwidth of operation of antenna; On the other hand, this article adopts two gaps to be placed on radiating element behind, and main purpose cuts off its backward electric current, and front and back are than there being certain lifting.But shortcoming is also obvious, and this structure is still faced with the problems such as large-size.
Summary of the invention
The object of the invention is to overcome the shortcoming of prior art and deficiency, provide a kind of antenna being applied to wireless communication field, especially a kind of planographic directional slits antenna.This antenna structure size is little, lightweight, be easy to processing and fabricating, is suitable for in small-size wireless terminal.
Object of the present invention is achieved through the following technical solutions:
A kind of miniaturized directional slits antenna, comprises tabular medium substrate and ground plate, also comprises metal forming feed structure and gap structure, wherein,
Described metal forming feed structure is positioned at the upper surface of tabular medium substrate, it comprises three feed minor structures, first feed minor structure connects the second feed minor structure, second feed minor structure is divided into two parts by the tie point of the first feed minor structure and the second feed minor structure, the length difference quarter-wave guide wavelength of these two parts; 3rd feed structure comprises the identical feed metal sheet of two structures, and described two feed metal sheets are connected with the two ends of the second feed minor structure respectively;
Described gap structure is positioned on ground plate, comprises the first gap radiation unit, the second gap radiation unit, and the isolation gap between the first gap radiation unit and the second gap radiation unit.
Concrete, described first gap radiation unit is identical with the second gap radiation cellular construction and be all gap of opening a way, and length is quarter-wave, and the two centre distance is separated by quarter spaces wavelength.
Concrete, described first feed minor structure connects the second feed minor structure place and has done process of fining away.
Concrete, the length of two feed metal sheets of described 3rd feed structure is quarter-wave guide wavelength, lays respectively at the top of described first gap radiation unit and the second gap radiation unit.
Compared with prior art, tool has the following advantages and beneficial effect in the present invention:
1. a kind of miniaturized directional slits antenna of the present invention achieves good directionality when not introducing any reflector and director.
2. one of the present invention miniaturized directional slits antenna does not introduce any reflector and director, and therefore antenna structure is compact, size is little.
3. the miniaturized directional slits Antenna Design of one of the present invention is simple, and volume is little, and cost is low, and planar structure is easy to integrated, can be applied in various wireless communication terminal.
Accompanying drawing explanation
Fig. 1 is the vertical section cutaway view of a kind of miniaturized directional slits antenna of the present invention;
Fig. 2 is the structural representation of slot antenna described in Fig. 1;
Fig. 3 is the scattering parameter simulation result of embodiment miniaturization directional slits antenna.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
The vertical section cutaway view of a kind of miniaturized directional slits antenna of the present invention as shown in Figure 1, mainly comprises plate-like dielectric substrate 10, ground plate 12 that feed structure 11 that substrate 10 upper surface metal forming is formed, substrate 10 lower surface metal paper tinsel are formed and grooving and the gap structure 13 that formed in ground plate 12.
As shown in Figure 2, feed structure 11 comprises the structural representation of a kind of miniaturized directional slits antenna of the present invention: the first feed minor structure 110, and feed minor structure 110 port is the impedance matching of 50 ohm; Second feed minor structure 111 is divided into 112 and 114 two parts by the tie point of the second feed minor structure 111 and the first feed minor structure 110, wherein 112 with 114 length differ quarter-wave guide wavelength; 3rd feed minor structure 113,115, wherein feed minor structure 113 is identical with 115, and feed minor structure 113 and 115 is quarter-wave guide wavelength.In order to reach better impedance matching, the first feed minor structure 110 connects the second feed minor structure 111 place and has done process of fining away.Gap structure 13 includes gap radiation unit 131 and 132 and isolation gap 133.Gap radiation unit 131 is identical with 132, and length is quarter-wave, and its centre distance is divided into quarter spaces wavelength mutually.The working method of whole antenna is that electromagnetic signal inputs from feed element 110 port, and the antenna element being coupled to two gaps formation radiate, and the mode of Received signal strength is then contrary.
It is 4.2 that the miniaturized directional slits antenna of one of the present invention is produced on dielectric constant in the manner of a printed circuit board, thickness is on the micro-band plate of polytetrafluoroethylene double-sided copper-clad of 1.5mm, uses machinery to scribe, the technology such as laser scoring, circuit board corrosion all can easily make.
Fig. 3 shows the scattering parameter simulation result of the present embodiment miniaturization directional slits antenna, and transverse axis represents the signal frequency of the present embodiment miniaturization directional slits antenna, and the longitudinal axis represents the amplitude of return loss (S11).In the signal emission process of the miniaturized directional slits antenna of the present embodiment, the Partial Power of signal is reflected back toward signal source, is become reflection power by the power reflected.S11 represents that its corresponding mathematical function is as follows: reflection power/incident power=20*log|S11| by the relation between the input power of the signal of the present embodiment miniaturization directional slits antenna and the reflection power of signal.
As shown in Figure 3, slot antenna 15dB reflection loss scope of the present invention is 5.0GHz to 6.1GHz, and relative bandwidth reaches 20%, covers WLAN (5.15-5.825GHz), the frequency ranges such as WiMAX (5.250-5.850GHz).Than reaching 15dB before and after centre frequency 5.5GHz place.Whole antenna size is 38mm × 29mm, i.e. 1.25 λ g × 0.95 λ g, the guide wavelength at frequency 5.5GHz place centered by λ g.
Above-described embodiment is the present invention's preferably execution mode; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (4)
1. a miniaturized directional slits antenna, comprises tabular medium substrate and ground plate, it is characterized in that, also comprises metal forming feed structure and gap structure, wherein,
Described metal forming feed structure is positioned at the upper surface of tabular medium substrate, it comprises the first feed minor structure, the second feed minor structure and the 3rd feed minor structure, described first feed minor structure connects described second feed minor structure, second feed minor structure is divided into two parts by the tie point of described first feed minor structure and described second feed minor structure, the length difference quarter-wave guide wavelength of these two parts; Described 3rd feed structure comprises the identical feed metal sheet of two structures, and described two feed metal sheets are connected with the two ends of described second feed minor structure respectively;
Described gap structure is positioned on ground plate, comprises the first gap radiation unit, the second gap radiation unit, and the isolation gap between the first gap radiation unit and the second gap radiation unit.
2. the miniaturized directional slits antenna of one according to claim 1, it is characterized in that: described first gap radiation unit is identical with the second gap radiation cellular construction and be all gap of opening a way, length is quarter-wave, and the two centre distance is separated by quarter spaces wavelength.
3. the miniaturized directional slits antenna of one according to claim 1, is characterized in that: described first feed minor structure connects the second feed minor structure place and done process of fining away.
4. the miniaturized directional slits antenna of one according to claim 1, it is characterized in that: the length of two feed metal sheets of described 3rd feed structure is quarter-wave guide wavelength, lay respectively at the top of described first gap radiation unit and the second gap radiation unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510334836.XA CN104953295B (en) | 2015-06-16 | 2015-06-16 | Miniaturized directional slot antenna |
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| CN201510334836.XA CN104953295B (en) | 2015-06-16 | 2015-06-16 | Miniaturized directional slot antenna |
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| CN104953295A true CN104953295A (en) | 2015-09-30 |
| CN104953295B CN104953295B (en) | 2020-04-28 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106898871A (en) * | 2017-01-22 | 2017-06-27 | 深圳市景程信息科技有限公司 | The wideband patch antenna of the aperture-coupled feed with dual polarization performance |
| CN107768811A (en) * | 2017-10-09 | 2018-03-06 | 青岛海信移动通信技术股份有限公司 | A kind of slot antenna and mobile terminal |
| CN109216907A (en) * | 2018-09-05 | 2019-01-15 | 锐捷网络股份有限公司 | A kind of double-feed antenna and electronic equipment |
| CN112930622A (en) * | 2018-10-26 | 2021-06-08 | 微软技术许可有限责任公司 | Structured slot antenna with isolation element |
| CN113555692A (en) * | 2020-04-23 | 2021-10-26 | 华为技术有限公司 | Electronic equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070046556A1 (en) * | 2005-08-29 | 2007-03-01 | Pharad, Llc | System and apparatus for a wideband omni-directional antenna |
| SG135069A1 (en) * | 2006-02-24 | 2007-09-28 | Sony Corp | Compact omni-directional broadband monopole antenna |
| CN101872897A (en) * | 2009-03-17 | 2010-10-27 | 捷讯研究有限公司 | The broadband, the high isolation two port antenna array that are used for the handheld device of many inputs, many outputs |
| CN102780092A (en) * | 2012-07-31 | 2012-11-14 | 电子科技大学 | Silicon integrated waveguide frequency adjustable slot antenna |
| CN104218304A (en) * | 2013-06-04 | 2014-12-17 | 西克股份公司 | Antenna |
| CN204289699U (en) * | 2014-11-26 | 2015-04-22 | 华南理工大学 | A kind of wide-band slot antenna |
| CN204741076U (en) * | 2015-06-16 | 2015-11-04 | 华南理工大学 | Miniaturized directional slot antenna |
-
2015
- 2015-06-16 CN CN201510334836.XA patent/CN104953295B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070046556A1 (en) * | 2005-08-29 | 2007-03-01 | Pharad, Llc | System and apparatus for a wideband omni-directional antenna |
| SG135069A1 (en) * | 2006-02-24 | 2007-09-28 | Sony Corp | Compact omni-directional broadband monopole antenna |
| CN101872897A (en) * | 2009-03-17 | 2010-10-27 | 捷讯研究有限公司 | The broadband, the high isolation two port antenna array that are used for the handheld device of many inputs, many outputs |
| CN102780092A (en) * | 2012-07-31 | 2012-11-14 | 电子科技大学 | Silicon integrated waveguide frequency adjustable slot antenna |
| CN104218304A (en) * | 2013-06-04 | 2014-12-17 | 西克股份公司 | Antenna |
| CN204289699U (en) * | 2014-11-26 | 2015-04-22 | 华南理工大学 | A kind of wide-band slot antenna |
| CN204741076U (en) * | 2015-06-16 | 2015-11-04 | 华南理工大学 | Miniaturized directional slot antenna |
Non-Patent Citations (2)
| Title |
|---|
| HAO-TAO HU,ETL: "A Compact Directional Slot Antenna and Its Applaction in MIMO Array", 《IEEE TRANSACTIONS ON ANTENNAS AND PROGATION》 * |
| M.KLEM,ETL: "Novel small-size directional antenna for UWB WBAN/WPAN applications", 《IEEE TRANSACTIONS ON ANTENNAS AND PROGATINO》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106898871A (en) * | 2017-01-22 | 2017-06-27 | 深圳市景程信息科技有限公司 | The wideband patch antenna of the aperture-coupled feed with dual polarization performance |
| CN107768811A (en) * | 2017-10-09 | 2018-03-06 | 青岛海信移动通信技术股份有限公司 | A kind of slot antenna and mobile terminal |
| CN109216907A (en) * | 2018-09-05 | 2019-01-15 | 锐捷网络股份有限公司 | A kind of double-feed antenna and electronic equipment |
| CN112930622A (en) * | 2018-10-26 | 2021-06-08 | 微软技术许可有限责任公司 | Structured slot antenna with isolation element |
| CN113555692A (en) * | 2020-04-23 | 2021-10-26 | 华为技术有限公司 | Electronic equipment |
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| Publication number | Publication date |
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| CN104953295B (en) | 2020-04-28 |
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