CN103346391A - Rear face grooved concave-convex branch type double-frequency microstrip antenna - Google Patents
Rear face grooved concave-convex branch type double-frequency microstrip antenna Download PDFInfo
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- CN103346391A CN103346391A CN2013102977420A CN201310297742A CN103346391A CN 103346391 A CN103346391 A CN 103346391A CN 2013102977420 A CN2013102977420 A CN 2013102977420A CN 201310297742 A CN201310297742 A CN 201310297742A CN 103346391 A CN103346391 A CN 103346391A
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Abstract
The invention discloses a rear face grooved concave-convex branch type double-frequency microstrip antenna. The rear face grooved concave-convex branch type double-frequency microstrip antenna comprises a substrate, a concave-convex radiation paster, an impedance matching input transmission line, a square metal grounding plate, an upper-side Y-shaped metal sheet and a lower-side Y-shaped metal sheet. The upper surface of the substrate is provided with the concave-convex radiation paster and the impedance matching input transmission line. The lower surface of the substrate is provided with the square metal grounding plate, the upper-side Y-shaped metal sheet and the lower-side Y-shaped metal sheet, the upper-side Y-shaped metal sheet is connected with the inner side of an upper frame of the square metal grounding plate, and the lower-side Y-shaped metal sheet is connected with the inner side of a lower frame of the square metal grounding plate. The concave-convex radiation paster is connected with the right upper end of the impedance matching input transmission line, the bottom end of the impedance matching input transmission line is connected with the bottom end of the substrate, and the bottom end of the square metal grounding plate is connected with the bottom end of the substrate. The rear face grooved concave-convex branch type double-frequency microstrip antenna has the advantages of being low in loss, good in radiation characteristic, simple in structure, small in size, convenient to manufacture and easy to integrate, saving materials and the like.
Description
Technical field
The present invention relates to antenna, relate in particular to the concavo-convex minor matters shape of a kind of back side open flume type double-frequency micro-strip antenna.
Background technology
Antenna is a critical component in radio communication and the radar system as a kind of equipment that receives and launch radio wave.In recent years, because communication system is towards big capacity, multi-functional and intelligentized trend development, microstrip antenna have obtained people in the development in future more favors.The most basic structure of microstrip antenna is exactly additional thin metal patch on the dielectric substrate of band grounding metal plane, by certain feeding classification, areas of dielectric underexcitation between paster and grounding metal plane plays radio frequency electromagnetic field, and this gap that forms by patch edges and ground plane is to external radiation.Based on many advantages of microstrip antenna, for example volume is little, and is in light weight, section is low, and is easily conformal, easy of integration and low cost etc., make microstrip antenna obtain using widely, and in this wide field of microwave antenna, constituted a research field with own characteristic.
At present, the dual frequency characteristics of microstrip antenna and The Wide-Band Design have caused people's great interest.The micro-strip paster antenna of two-frequency operation, requiring in principle has similar radiation characteristic and matching properties at two working frequency range, obtains these performances and remarkable with planar technique, particularly must keep the intrinsic structure of paster antenna.There are a lot of methods to be used for realizing the two-frequency operation of microstrip antenna at present.These methods mainly are divided three classes: the first kind is the multimode double-frequency micro-strip antenna, and second class is the multi-disc double-frequency micro-strip antenna, and the 3rd class is that reactance loads paster antenna.In some communication system, as needing two-band or multiband work in mobile communication and the global positioning system usually.In wireless communication field, frequency multiplexing technique has then obtained using more widely, and mobile phone terminal and WALN communication system all need double frequency even three antenna of work frequently.Thereby the double-frequency micro-strip antenna that research and design goes out function admirable has great importance.
Summary of the invention
The present invention is big in order to overcome prior art loss in WLAN (wireless local area network), and the low deficiency that gains provides a kind of concavo-convex minor matters shape of back side open flume type double-frequency micro-strip antenna of function admirable.
In order to achieve the above object, technical scheme of the present invention is as follows:
The concavo-convex minor matters shape of back side open flume type double-frequency micro-strip antenna comprises substrate, concave-convex radiation patch, impedance matching input transmission line, square box metal ground plate, upside Y shape sheet metal, downside Y shape sheet metal; The upper surface of substrate is provided with concave-convex radiation patch and impedance matching input transmission line; The lower surface of substrate is provided with square box metal ground plate, upside Y shape sheet metal and downside Y shape sheet metal, upside Y shape sheet metal links to each other with the upper side frame of square box metal ground plate is inboard, and downside Y shape sheet metal links to each other with the lower frame of square box metal ground plate is inboard; The concave-convex radiation patch links to each other with the upper right side of impedance matching input transmission line, and the bottom of impedance matching input transmission line links to each other with the bottom of substrate, and the bottom of square box metal ground plate links to each other with the bottom of substrate.
Described substrate is the glass-epoxy material, and the length of substrate is 36mm～38mm, and width is 36mm～38mm.Described concave-convex radiation patch is formed by connecting by horizontal rectangular patch and the vertical rectangular patch that width equates, the width of paster is 1mm～2mm; Laterally the length of rectangular patch is 4mm～5mm, and vertically the length of rectangular patch is 3.5mm～4.0mm.The length of described impedance matching input transmission line is 19mm～20mm, and width is 3.5mm～4.0mm.The outer length of side of described square box metal ground plate is 36mm～38mm, and the interior length of side is 24mm～26mm.Described upside Y shape sheet metal is identical with the dimensional parameters of downside Y shape sheet metal, and total length is 6mm～8mm, and total height is 6mm～8mm, and the metal live width of paster is 1mm～2mm; The height of Y shape branch is 2.5mm～3.0mm.
The concavo-convex minor matters shape of the back side of the present invention open flume type double-frequency micro-strip antenna has that loss is low, radiation characteristic good, simple in structure, size is little, economical with materials, be convenient to make and be easy to advantages such as integrated.
Description of drawings:
Fig. 1 is the Facad structure schematic diagram of the concavo-convex minor matters shape of back side open flume type double-frequency micro-strip antenna;
Fig. 2 is the structure schematic diagram of the concavo-convex minor matters shape of back side open flume type double-frequency micro-strip antenna;
Fig. 3 is the S parametric plot of the concavo-convex minor matters shape of back side open flume type double-frequency micro-strip antenna;
Fig. 4 is the E surface radiation directional diagram of antenna when 3.21GHz;
Fig. 5 is the H surface radiation directional diagram of antenna when 3.21GHz;
Fig. 6 is the E surface radiation directional diagram of antenna when 5.30GHz;
Fig. 7 is the H surface radiation directional diagram of antenna when 5.30GHz.
Embodiment
Shown in Fig. 1～2, the concavo-convex minor matters shape of back side open flume type double-frequency micro-strip antenna comprises substrate 1, concave-convex radiation patch 2, impedance matching input transmission line 3, square box metal ground plate 4, upside Y shape sheet metal 5, downside Y shape sheet metal 6; The upper surface of substrate 1 is provided with concave-convex radiation patch 2 and impedance matching input transmission line 3; The lower surface of substrate 1 is provided with square box metal ground plate 4, upside Y shape sheet metal 5 and downside Y shape sheet metal 6, upside Y shape sheet metal 5 links to each other with the upper side frame of square box metal ground plate 4 is inboard, and downside Y shape sheet metal 6 links to each other with the lower frame of square box metal ground plate 4 is inboard; Concave-convex radiation patch 2 links to each other with the upper right side of impedance matching input transmission line 3, and the bottom of impedance matching input transmission line 3 links to each other with the bottom of substrate 1, and the bottom of square box metal ground plate 4 links to each other with the bottom of substrate 1.
Described substrate 1 is the glass-epoxy material, and the length of substrate 1 is 36mm～38mm, and width is 36mm～38mm.Described concave-convex radiation patch 2 is formed by connecting by horizontal rectangular patch and the vertical rectangular patch that width equates, the width of paster is 1mm～2mm; Laterally the length of rectangular patch is 4mm～5mm, and vertically the length of rectangular patch is 3.5mm～4.0mm.The length of described impedance matching input transmission line 3 is 19mm～20mm, and width is 3.5mm～4.0mm.The outer length of side of described square box metal ground plate 4 is 36mm～38mm, and the interior length of side is 24mm～26mm.Described upside Y shape sheet metal 5 is identical with the dimensional parameters of downside Y shape sheet metal 6, and total length is 6mm～8mm, and total height is 6mm～8mm, and the metal live width of paster is 1mm～2mm; The height of Y shape branch is 2.5mm～3.0mm.
Embodiment 1
Selecting dielectric constant is that 4.4 glass-epoxy material is made little belt substrate, and thickness is 1.5mm.The length of substrate is 36mm, and width is 36mm.The concave-convex radiation patch is formed by connecting by horizontal rectangular patch and the vertical rectangular patch that width equates, the width of paster is 1mm; Laterally the length of rectangular patch is 4mm, and vertically the length of rectangular patch is 3.5mm.The length of impedance matching input transmission line is 19mm, and width is 3.5mm.The outer length of side of square box metal ground plate is 36mm, and the interior length of side is 24mm.Upside Y shape sheet metal is identical with the dimensional parameters of downside Y shape sheet metal, and total length is 6mm, and total height is 6mm, and the metal live width of paster is 1mm; The height of Y shape branch is 2.5mm.Every performance index of the concavo-convex minor matters shape of back side open flume type double-frequency micro-strip antenna adopt CST software to carry out test analysis, the S parameter curve of gained as shown in Figure 3, as seen from the figure ,-the following working frequency range of 10dB is 3.152GHz～3.252GHz and 5.218GHz～5.376GHz.Fig. 4-5 is depicted as E face and the H face directional diagram of antenna when 3.21GHz, and as seen from the figure, when frequency was 3.21GHz, gaining was that 4.3dBi, half power lobe width are 70.0 °.Fig. 6-7 is depicted as E face and the H face directional diagram of antenna when 5.30GHz, and as seen from the figure, when frequency was 5.30GHz, gaining was that 1.9dBi, half power lobe width are 54.3 °.
Claims (6)
1. the concavo-convex minor matters shape of a back side open flume type double-frequency micro-strip antenna is characterized in that comprising substrate (1), concave-convex radiation patch (2), impedance matching input transmission line (3), square box metal ground plate (4), upside Y shape sheet metal (5), downside Y shape sheet metal (6); The upper surface of substrate (1) is provided with concave-convex radiation patch (2) and impedance matching input transmission line (3); The lower surface of substrate (1) is provided with square box metal ground plate (4), upside Y shape sheet metal (5) and downside Y shape sheet metal (6), upside Y shape sheet metal (5) links to each other with the upper side frame of square box metal ground plate (4) is inboard, and downside Y shape sheet metal (6) links to each other with the lower frame of square box metal ground plate (4) is inboard; Concave-convex radiation patch (2) links to each other with the upper right side of impedance matching input transmission line (3), and the bottom of impedance matching input transmission line (3) links to each other with the bottom of substrate (1), and the bottom of square box metal ground plate (4) links to each other with the bottom of substrate (1).
2. the concavo-convex minor matters shape of a kind of back side open flume type according to claim 1 double-frequency micro-strip antenna is characterized in that described substrate (1) is the glass-epoxy material, and the length of substrate (1) is 36mm～38mm, and width is 36mm～38mm.
3. the concavo-convex minor matters shape of a kind of back side open flume type according to claim 1 double-frequency micro-strip antenna, it is characterized in that described concave-convex radiation patch (2) is formed by connecting by horizontal rectangular patch and the vertical rectangular patch that width equates, the width of paster is 1mm～2mm; Laterally the length of rectangular patch is 4mm～5mm, and vertically the length of rectangular patch is 3.5mm～4.0mm.
4. the concavo-convex minor matters shape of a kind of back side open flume type according to claim 1 double-frequency micro-strip antenna is characterized in that the length of described impedance matching input transmission line (3) is 19mm～20mm, and width is 3.5mm～4.0mm.
5. the concavo-convex minor matters shape of a kind of back side open flume type according to claim 1 double-frequency micro-strip antenna, the outer length of side that it is characterized in that described square box metal ground plate (4) is 36mm～38mm, the interior length of side is 24mm～26mm.
6. the concavo-convex minor matters shape of a kind of back side open flume type according to claim 1 double-frequency micro-strip antenna, it is characterized in that described upside Y shape sheet metal (5) is identical with the dimensional parameters of downside Y shape sheet metal (6), total length is 6mm～8mm, total height is 6mm～8mm, and the metal live width of paster is 1mm～2mm; The height of Y shape branch is 2.5mm～3.0mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310297742.0A CN103346391B (en) | 2013-07-11 | 2013-07-11 | Back side open flume type concave-convex branch double-frequency micro-strip antenna |
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| CN201310297742.0A CN103346391B (en) | 2013-07-11 | 2013-07-11 | Back side open flume type concave-convex branch double-frequency micro-strip antenna |
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| CN103346391B CN103346391B (en) | 2016-08-10 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108987931A (en) * | 2018-07-26 | 2018-12-11 | 中国计量大学 | A kind of five band antenna of GPS/WiMax |
| WO2021142888A1 (en) * | 2020-01-19 | 2021-07-22 | 惠州Tcl移动通信有限公司 | Antenna structure and terminal device using same |
| CN113490860A (en) * | 2021-05-31 | 2021-10-08 | 华为技术有限公司 | Antenna, detection device and terminal |
Citations (5)
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|---|---|---|---|---|
| US20020118142A1 (en) * | 2001-02-15 | 2002-08-29 | Chien-Jen Wang | Dual-band meandering-line antenna |
| CN201655958U (en) * | 2010-03-03 | 2010-11-24 | 神讯电脑(昆山)有限公司 | Double-frequency inverted-F type antenna |
| TW201104954A (en) * | 2009-07-30 | 2011-02-01 | Richwave Technology Corp | Multiple-band microstrip meander-line antenna |
| CN203218431U (en) * | 2013-05-10 | 2013-09-25 | 宜兴亚泰科技有限公司 | Cavity Bridge |
| CN203339300U (en) * | 2013-06-28 | 2013-12-11 | 中国计量学院 | Bent branch-shaped dual-frequency micro-strip antenna |
-
2013
- 2013-07-11 CN CN201310297742.0A patent/CN103346391B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020118142A1 (en) * | 2001-02-15 | 2002-08-29 | Chien-Jen Wang | Dual-band meandering-line antenna |
| TW201104954A (en) * | 2009-07-30 | 2011-02-01 | Richwave Technology Corp | Multiple-band microstrip meander-line antenna |
| CN201655958U (en) * | 2010-03-03 | 2010-11-24 | 神讯电脑(昆山)有限公司 | Double-frequency inverted-F type antenna |
| CN203218431U (en) * | 2013-05-10 | 2013-09-25 | 宜兴亚泰科技有限公司 | Cavity Bridge |
| CN203339300U (en) * | 2013-06-28 | 2013-12-11 | 中国计量学院 | Bent branch-shaped dual-frequency micro-strip antenna |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108987931A (en) * | 2018-07-26 | 2018-12-11 | 中国计量大学 | A kind of five band antenna of GPS/WiMax |
| WO2021142888A1 (en) * | 2020-01-19 | 2021-07-22 | 惠州Tcl移动通信有限公司 | Antenna structure and terminal device using same |
| CN113490860A (en) * | 2021-05-31 | 2021-10-08 | 华为技术有限公司 | Antenna, detection device and terminal |
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| CN103346391B (en) | 2016-08-10 |
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Inventor after: Li Jiusheng Inventor after: Tang Lin Inventor before: Li Jiusheng |
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