CN105024139A - Panel ultra wide band (UWB) antenna for automobile communication - Google Patents
Panel ultra wide band (UWB) antenna for automobile communication Download PDFInfo
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- CN105024139A CN105024139A CN201510373595.XA CN201510373595A CN105024139A CN 105024139 A CN105024139 A CN 105024139A CN 201510373595 A CN201510373595 A CN 201510373595A CN 105024139 A CN105024139 A CN 105024139A
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Abstract
The invention discloses a panel UWB antenna for automobile communication. The antenna comprises a floor and a dielectric substrate connected with the floor, the upper surface of the floor is leveled with that of the dielectric substrate, the dielectric substrate is provided with a radiation panel, and the radiation panel is of an isosceles trapezoid structure whose four corners are rounded off. The antenna further comprises a feed microstrip line, the feed microstrip line comprises a linear feed microstrip line segment, a gradual-change feed microstrip line segment and a feed-in feed microstrip line segment, the gradual-change feed microstrip line segment is an isosceles trapezoidal microstrip line, the upper side of the isosceles trapezoidal microstrip line is connected with the feed-in feed microstrip line segment, the lower side of the isosceles trapezoidal microstrip line is connected with the linear feed microstrip line segment, the length of the upper side of the isosceles trapezoidal microstrip line is lower than that of the lower side of the isosceles trapezoidal microstrip line, both the linear feed microstrip line segment and the gradual-change feed microstrip line segment are arranged on the floor, and the end, far from the gradual-change feed microstrip line segment, of the feed-in feed microstrip line segment is connected with the lower side of the radiation panel.
Description
Technical field
The present invention relates to car antenna technology, specifically for the flat plate ultra wideband antenna of automobile communication.
Background technology
Common car antenna is all column antennas, it installs inconvenience, car body top is provided with outstanding, appearance effects is large, and antenna is external is often exposed to the weather, useful life is low, therefore, we need to arrange a kind of plate type antenna possessing more wide degree, the defect of traditional columnar antenna can be overcome, and the plate aerial set out can be integrated in roof, can not expose, surface structure moulding is good, useful life can improve, research in the past few years shows, TEM loudspeaker, paster antenna and slot antenna etc. can use as ultra-wideband antenna, wherein paster antenna has profile low, lightweight, the easily advantage such as integrated and low cost of manufacture, potential advantage is had in the application of mobile communication.But the bandwidth of paster antenna is narrow, some researchers have had a go at the work promoting bandwidth, and the shape of resistor loaded and change antenna is that two classes are successfully attempted.Resistor loaded can reduce the effect of antenna.Some plane single pole sub antennas have that larger floor is vertical with antenna arm places, and this brings inconvenience to the Miniaturization Design of antenna.The method that coplanar wave guide feedback and fluting combine also can increase the bandwidth of antenna.
Summary of the invention
The object of the present invention is to provide a kind of flat plate ultra wideband antenna for automobile communication, the wider broadband of antenna can be achieved.
Object of the present invention is achieved through the following technical solutions: for the flat plate ultra wideband antenna of automobile communication, comprise floor and dielectric substrate that upper surface flush is connected together in succession, dielectric substrate is provided with radiation flat board, radiation flat board is the slab construction that rounding process is carried out in a corner to equicrural ladder plate, the length on the upper base of described equicrural ladder plate is W1, the length of bottom is W2, W1 is greater than W2, also comprise feeding microstrip line, feeding microstrip line comprises successively along the straight section feeding microstrip line connected, transition feeding microstrip line, feed-in section feeding microstrip line, transition feeding microstrip line is an isosceles trapezoid microstrip line, the upper base of isosceles trapezoid microstrip line is connected with feed-in section feeding microstrip line, the bottom of isosceles trapezoid microstrip line is connected with straight section feeding microstrip line, the length on the upper base of isosceles trapezoid microstrip line is less than the length of the bottom of isosceles trapezoid microstrip line, straight section feeding microstrip line, transition feeding microstrip line is all arranged on floor, and feed-in section feeding microstrip line is connected with the bottom of radiation flat board away from one end of transition feeding microstrip line, and the position of central point is departed from the bottom that feed-in section feeding microstrip line arranges radiation flat board.
The feeding microstrip line that the present invention adopts the radiation of above-mentioned feature structure dull and stereotyped and special, can form miniaturized antenna, can also ensure that this antenna possesses wider bandwidth simultaneously.In order to increase the bandwidth of antenna, feeding microstrip line is designed to isosceles trapezoid microstrip line, and isosceles trapezoid microstrip line just forms conical gradual change line.While change fed microstrip wire shaped, also use the method for asymmetric feed to increase the bandwidth of antenna, also antenna position to the left has been selected in by distributing point, the position of central point is departed from the bottom that feed-in section feeding microstrip line arranges radiation flat board, during popular saying, feed-in section feeding microstrip line is arranged the non-central location of the bottom of radiation flat board, after arranging like this, just define asymmetric feed, be conducive to the bandwidth improving antenna.In order to reduce the reflection loss of antenna, radiation flat board of the present invention adopts unconventional slab construction, and namely adopt equicrural ladder plate to carry out rounding process to its four angles, this can make the reflection of antenna reduce.
Preferably, described W1 is 25mm, W2 is 15mm, and the rounding process that radius is 5mm is carried out in the corner of equicrural ladder plate.
Preferably, described dielectric substrate to be length be 25 mm, wide be 30 mm, thickness is 2 mm, dielectric constant is 4.4 Rogers5880 substrate.
Preferably, the length of transition feeding microstrip line is 15 mm, input impedance is 50 Ω.
The invention has the advantages that: possess wider bandwidth, dull and stereotyped by the radiation of trapezoidal transition feeding microstrip line and rounding process, improve the bandwidth of antenna, the return loss of antenna is made to be less than-10db in the bandwidth of 2.8GHz to 18.6GHz, this antenna is easy to processing simultaneously, be particularly suitable for the integrated combination of car roof, do not affect car conour structure.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention.
Reference numeral in figure is expressed as: 1, floor, and 2, straight section feeding microstrip line, 3, transition feeding microstrip line, 4, feed-in section feeding microstrip line, 5, radiation is dull and stereotyped, 6, dielectric substrate.
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.
embodiment 1:
As shown in Figure 1.
For the flat plate ultra wideband antenna of automobile communication, comprise floor 1 and dielectric substrate 6 that upper surface flush is connected together in succession, dielectric substrate 6 is provided with radiation flat board 5, radiation flat board 5 is the slab construction that rounding process is carried out in a corner to equicrural ladder plate, the length on the upper base of described equicrural ladder plate is W1, the length of bottom is W2, W1 is greater than W2, also comprise feeding microstrip line, feeding microstrip line comprises successively along the straight section feeding microstrip line 2 connected, transition feeding microstrip line 3, feed-in section feeding microstrip line 4, transition feeding microstrip line 3 is an isosceles trapezoid microstrip line, the upper base of isosceles trapezoid microstrip line is connected with feed-in section feeding microstrip line 4, the bottom of isosceles trapezoid microstrip line is connected with straight section feeding microstrip line 2, the length on the upper base of isosceles trapezoid microstrip line is less than the length of the bottom of isosceles trapezoid microstrip line, straight section feeding microstrip line 2, transition feeding microstrip line 3 is all arranged on floor 1, and feed-in section feeding microstrip line 4 is connected with the bottom of radiation flat board 5 away from one end of transition feeding microstrip line 3, and the position of central point is departed from the bottom that feed-in section feeding microstrip line 4 arranges radiation flat board 5.
The present invention adopts the radiation of above-mentioned feature structure dull and stereotyped 5 and special feeding microstrip line, can form miniaturized antenna, can also ensure that this antenna possesses wider bandwidth simultaneously.In order to increase the bandwidth of antenna, feeding microstrip line is designed to isosceles trapezoid microstrip line, and isosceles trapezoid microstrip line just forms conical gradual change line.While change fed microstrip wire shaped, also use the method for asymmetric feed to increase the bandwidth of antenna, also antenna position to the left has been selected in by distributing point, the position of central point is departed from the bottom that feed-in section feeding microstrip line 4 arranges radiation flat board 5, during popular saying, feed-in section feeding microstrip line 4 is arranged the non-central location of the bottom of radiation flat board 5, after arranging like this, just define asymmetric feed, be conducive to the bandwidth improving antenna.In order to reduce the reflection loss of antenna, radiation of the present invention dull and stereotyped 5 adopts unconventional slab construction, and namely adopt equicrural ladder plate to carry out rounding process to its four angles, this can make the reflection of antenna reduce.
Preferably, described W1 is 25mm, W2 is 15mm, and the rounding process that radius is 5mm is carried out in the corner of equicrural ladder plate.
Preferably, described dielectric substrate to be length be 25 mm, wide be 30 mm, thickness is 2 mm, dielectric constant is 4.4 Rogers5880 substrate.
Preferably, the length of transition feeding microstrip line 3 is 15 mm, input impedance is 50 Ω.
As mentioned above, then well the present invention can be realized.
Claims (4)
1. for the flat plate ultra wideband antenna of automobile communication, it is characterized in that: comprise floor (1) and dielectric substrate (6) that upper surface flush is connected together in succession, dielectric substrate (6) is provided with radiation flat board (5), radiation flat board (5) is the slab construction that rounding process is carried out in a corner to equicrural ladder plate, the length on the upper base of described equicrural ladder plate is W1, the length of bottom is W2, W1 is greater than W2, also comprise feeding microstrip line, feeding microstrip line comprises successively along the straight section feeding microstrip line (2) connected, transition feeding microstrip line (3), feed-in section feeding microstrip line (4), transition feeding microstrip line (3) is an isosceles trapezoid microstrip line, the upper base of isosceles trapezoid microstrip line is connected with feed-in section feeding microstrip line (4), the bottom of isosceles trapezoid microstrip line is connected with straight section feeding microstrip line (2), the length on the upper base of isosceles trapezoid microstrip line is less than the length of the bottom of isosceles trapezoid microstrip line, straight section feeding microstrip line (2), transition feeding microstrip line (3) is all arranged on floor (1), and feed-in section feeding microstrip line (4) is connected with the bottom of radiation flat board (5) away from one end of transition feeding microstrip line (3), and the position of central point is departed from the bottom that feed-in section feeding microstrip line (4) arranges radiation flat board (5).
2. the flat plate ultra wideband antenna for automobile communication according to claim 1, is characterized in that: described W1 is 25mm, W2 is 15mm, and the rounding process that radius is 5mm is carried out in the corner of equicrural ladder plate.
3. the flat plate ultra wideband antenna for automobile communication according to claim 1, is characterized in that: described dielectric substrate to be length be 25 mm, wide be 30 mm, thickness is 2 mm, dielectric constant is 4.4 Rogers5880 substrate.
4. the flat plate ultra wideband antenna for automobile communication according to claim 1, is characterized in that: the length of transition feeding microstrip line (3) is 15 mm, input impedance is 50 Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510373595.XA CN105024139A (en) | 2015-07-01 | 2015-07-01 | Panel ultra wide band (UWB) antenna for automobile communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510373595.XA CN105024139A (en) | 2015-07-01 | 2015-07-01 | Panel ultra wide band (UWB) antenna for automobile communication |
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| Publication Number | Publication Date |
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| CN105024139A true CN105024139A (en) | 2015-11-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510373595.XA Pending CN105024139A (en) | 2015-07-01 | 2015-07-01 | Panel ultra wide band (UWB) antenna for automobile communication |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108134196A (en) * | 2017-12-25 | 2018-06-08 | 深圳Tcl新技术有限公司 | Microstrip antenna and television set |
| CN109830796A (en) * | 2019-03-29 | 2019-05-31 | 中国电子科技集团公司第三十八研究所 | A kind of antenna based on CMOS technology |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102570021A (en) * | 2012-02-16 | 2012-07-11 | 厦门大学 | Trapped wave ultra-wide band antenna with triangular groove |
-
2015
- 2015-07-01 CN CN201510373595.XA patent/CN105024139A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102570021A (en) * | 2012-02-16 | 2012-07-11 | 厦门大学 | Trapped wave ultra-wide band antenna with triangular groove |
Non-Patent Citations (1)
| Title |
|---|
| 廖兴亮等: "一种基于微带馈电的平面单极子超宽带天线", 《2009年全国微波毫米波会议论文集（上册）》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108134196A (en) * | 2017-12-25 | 2018-06-08 | 深圳Tcl新技术有限公司 | Microstrip antenna and television set |
| CN108134196B (en) * | 2017-12-25 | 2020-12-08 | 深圳Tcl新技术有限公司 | Microstrip antenna and television |
| CN109830796A (en) * | 2019-03-29 | 2019-05-31 | 中国电子科技集团公司第三十八研究所 | A kind of antenna based on CMOS technology |
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Application publication date: 20151104 |