CN203218448U - Bow-tie wideband microstrip antenna - Google Patents
Bow-tie wideband microstrip antenna Download PDFInfo
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- CN203218448U CN203218448U CN 201320191109 CN201320191109U CN203218448U CN 203218448 U CN203218448 U CN 203218448U CN 201320191109 CN201320191109 CN 201320191109 CN 201320191109 U CN201320191109 U CN 201320191109U CN 203218448 U CN203218448 U CN 203218448U
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Abstract
The utility model discloses a bow-tie wideband microstrip antenna comprising a substrate, a bow-tie radiation patch, an impedance match input transmission wire, symmetrical L-shaped coupling microstrip wires and a rectangular metal grounding plate, wherein the bow-tie radiation patch, the impedance match input transmission wire and the symmetrical L-shaped coupling microstrip wires are disposed on the upper surface of the substrate, the bottom end of the core of the bow-tie radiation patch is connected with one end of the impedance match input transmission wire, the other end of the impedance match input transmission wire is connected with the bottom end of the substrate, the symmetrical L-shaped coupling microstrip wires are arranged at the two ends of the impedance match input transmission wire, the rectangular metal grounding plate is arranged on the lower surface of the substrate, and the bottom end of the rectangular grounding plate is connected with that of the substrate. An FR4 material is applied to the microstrip substrate so that the bow-tie wideband microstrip antenna has the advantages of low cost, excellent radiation characteristics, a simple and compact structure and convenient integration.
Description
Technical field
The utility model relates to antenna, relates in particular to a kind of bow tie wideband microstrip antenna.
Technical background
Compare with common microwave antenna, microstrip antenna have thin profile, volume little, simple in structure, be fit to printed circuit technique produce in enormous quantities, can be conformal with carrier, be easy to integrated, make simple, be easy to realize the multiple advantage of dual polarization etc.The not available advantage of antenna of other types such as micro-strip paster antenna is little with its efficient height, size, analytical method maturation and being used widely.
Many performances of broadband dual polarized antenna itself and engineering application requirements, brought difficulty for research and design: to require antenna to have wideer frequency band, gain preferably and directional diagram, good isolation degree and cross polarization on the one hand, also need to consider factors such as cost, installation and debugging, volume, weight on the other hand.These 2 years, the research of all channel antenna obtained some new progresses.Bi Qun Wu and Kwai-Man Luk have proposed the dual polarized antenna of a kind of pair of inverted L shape feed in the literature, realized 65.9% impedance bandwidth (VSWR＜2) and be lower than-isolation of 36dB, stable gain and directional diagram are arranged still, there are several shortcomings in this antenna: the one, and the structure of employing metal straight forming, weight is bigger; The 2nd, feed line and support, the distance between the post is very little, and this distance is very big to the impedance bandwidth influence, will inevitably increase the cost of installation, debugging, maintenance; The 3rd, distance is excessive between two inverted L shape feed lines of this antenna, and the consistency of impedance is poor.
Summary of the invention
The utility model 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 bow tie wideband microstrip antenna.
In order to achieve the above object, the technical solution of the utility model is as follows:
The bow tie wideband microstrip antenna comprises substrate, bow tie radiation patch, impedance matching input transmission line, symmetrical L shaped coupled microstrip line, rectangular metal ground plate; The upper surface of substrate is provided with bow tie radiation patch, impedance matching input transmission line and symmetrical L shaped coupled microstrip line, the bottom, center of bow tie radiation patch links to each other with an end of impedance matching input transmission line, the other end of impedance matching input transmission line links to each other with the bottom of substrate, the two ends of impedance matching input transmission line are provided with symmetrical L shaped coupled microstrip line, the lower surface of substrate is provided with the rectangular metal ground plate, and the bottom of rectangular metal ground plate links to each other with the bottom of substrate.
Described substrate is the glass-epoxy material, and the width of substrate is 20mm～25mm, highly is 25mm～30mm.Described bow tie radiation patch is to be connected to form successively by the trapezoidal radiation patch of inversion, rectangular radiation patch, trapezoidal radiation patch, the last bottom side length of being inverted trapezoidal radiation patch is 5mm～10mm, the length of side of going to the bottom is 10mm～15mm, highly be 4mm～5mm, the length of rectangular radiation patch is 5mm～10mm, width is 2mm～3mm, and the last bottom side length of trapezoidal radiation patch is 10mm～15mm, and the length of side of going to the bottom is 5mm～7mm.The length of described impedance matching input transmission line is 15mm～16mm, and micro belt line width is 3mm～4mm.The micro belt line width of the L shaped coupled microstrip line of described symmetry is 0.5mm～1mm, and the L shaped length of side is 5mm～6mm.The length of described rectangular metal ground plate is 20mm～25mm, and width is 10mm～15mm.
The little belt substrate of the utility model uses the FR4 material, and it is low, simple in structure small-sized to have a cost, is convenient to integrated.
Description of drawings:
Fig. 1 is the structural front view of bow tie wideband microstrip antenna;
Fig. 2 is the structure rearview of bow tie wideband microstrip antenna;
Fig. 3 is the insertion loss figure of bow tie wideband microstrip antenna;
Fig. 4 is the E surface radiation directional diagram of bow tie wideband microstrip antenna when 5GHz;
Fig. 5 is the H surface radiation directional diagram of bow tie wideband microstrip antenna when 5GHz;
Fig. 6 is the E surface radiation directional diagram of bow tie wideband microstrip antenna when 6GHz;
Fig. 7 is the H surface radiation directional diagram of bow tie wideband microstrip antenna when 6GHz.
Embodiment
As shown in Figure 1, the bow tie wideband microstrip antenna comprises substrate 1, bow tie radiation patch 2, impedance matching input transmission line 3, symmetrical L shaped coupled microstrip line 4, rectangular metal ground plate 5; The upper surface of substrate 1 is provided with bow tie radiation patch 2, impedance matching input transmission line 3 and symmetrical L shaped coupled microstrip line 4, the bottom, center of bow tie radiation patch 2 links to each other with an end of impedance matching input transmission line 3, the other end of impedance matching input transmission line 3 links to each other with the bottom of substrate 1, the two ends of impedance matching input transmission line 3 are provided with symmetrical L shaped coupled microstrip line 4, the lower surface of substrate 1 is provided with rectangular metal ground plate 5, and the bottom of rectangular metal ground plate 5 links to each other with the bottom of substrate 1.
Described substrate 1 is the glass-epoxy material, and the width of substrate 1 is 20mm～25mm, highly is 25mm～30mm.Described bow tie radiation patch 2 is to be connected to form successively by the trapezoidal radiation patch of inversion, rectangular radiation patch, trapezoidal radiation patch, the last bottom side length of being inverted trapezoidal radiation patch is 5mm～10mm, the length of side of going to the bottom is 10mm～15mm, highly be 4mm～5mm, the length of rectangular radiation patch is 5mm～10mm, width is 2mm～3mm, and the last bottom side length of trapezoidal radiation patch is 10mm～15mm, and the length of side of going to the bottom is 5mm～7mm.The length of described impedance matching input transmission line 3 is 15mm～16mm, and micro belt line width is 3mm～4mm.The micro belt line width of the L shaped coupled microstrip line 4 of described symmetry is 0.5mm～1mm, and the L shaped length of side is 5mm～6mm.The length of described rectangular metal ground plate 5 is 20mm～25mm, and width is 10mm～15mm.
The bow tie wideband microstrip antenna:
Selecting dielectric constant is that 4.9 FR4 material is made little belt substrate, and thickness is 2mm.The width of substrate is 20mm, highly is 26mm.The bow tie radiation patch is to be connected to form successively by the trapezoidal radiation patch of inversion, rectangular radiation patch, trapezoidal radiation patch, the last bottom side length of being inverted trapezoidal radiation patch is 8mm, the length of side of going to the bottom is 13mm, highly be 4.8mm, the length of rectangular radiation patch is 8mm, width is 2mm, and the last bottom side length of trapezoidal radiation patch is 13mm, and the length of side of going to the bottom is 7mm.The length of impedance matching input transmission line is 3mm, and micro belt line width is 15mm.The micro belt line width of the L shaped coupled microstrip line of symmetry is 0.5mm, and the L shaped length of side is 5mm.The length of rectangular metal ground plate is 20mm, and width is 10mm.Every performance index of bow tie wideband microstrip antenna adopt CST software to test the insertion damage curve of gained such as accompanying drawing 3.As seen from the figure, the following working frequency range of-10dB is respectively 3.6527-8.2969GHz, Fig. 4-7 is depicted as bow tie wideband microstrip antenna the E face when 5GHz and 6GHz and H face directional diagram respectively, as seen from the figure, when frequency is 5GHz, gain is 3.5dBi, and the half power lobe width is 78.1 °; When frequency was 6GHz, gaining was that 3.7dBi, half power lobe width are 70 °.
Claims (6)
1. a bow tie wideband microstrip antenna is characterized in that comprising substrate (1), bow tie radiation patch (2), impedance matching input transmission line (3), symmetrical L shaped coupled microstrip line (4), rectangular metal ground plate (5); The upper surface of substrate (1) is provided with bow tie radiation patch (2), impedance matching input transmission line (3) and symmetrical L shaped coupled microstrip line (4), the bottom, center of bow tie radiation patch (2) links to each other with an end of impedance matching input transmission line (3), the other end of impedance matching input transmission line (3) links to each other with the bottom of substrate (1), the two ends of impedance matching input transmission line (3) are provided with symmetrical L shaped coupled microstrip line (4), the lower surface of substrate (1) is provided with rectangular metal ground plate (5), and the bottom of rectangular metal ground plate (5) links to each other with the bottom of substrate (1).
2. a kind of bow tie wideband microstrip antenna as claimed in claim 1 is characterized in that described substrate (1) is the glass-epoxy material, and the width of substrate (1) is 20mm～25mm, highly is 25mm～30mm.
3. a kind of bow tie wideband microstrip antenna as claimed in claim 1, it is characterized in that described bow tie radiation patch (2) is to be connected to form successively by the trapezoidal radiation patch of inversion, rectangular radiation patch, trapezoidal radiation patch, the last bottom side length of being inverted trapezoidal radiation patch is 5mm～10mm, the length of side of going to the bottom is 10mm～15mm, highly be 4mm～5mm, the length of rectangular radiation patch is 5mm～10mm, width is 2mm～3mm, the last bottom side length of trapezoidal radiation patch is 10mm～15mm, and the length of side of going to the bottom is 5mm～7mm.
4. a kind of bow tie wideband microstrip antenna as claimed in claim 1 is characterized in that the length of described impedance matching input transmission line (3) is 15mm～16mm, and micro belt line width is 3mm～4mm.
5. a kind of bow tie wideband microstrip antenna as claimed in claim 1, the micro belt line width that it is characterized in that the L shaped coupled microstrip line of described symmetry (4) is 0.5mm～1mm, the L shaped length of side is 5mm～6mm.
6. a kind of bow tie wideband microstrip antenna as claimed in claim 1, the length that it is characterized in that described rectangular metal ground plate (5) is 20mm～25mm, width is 10mm～15mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320191109 CN203218448U (en) | 2013-04-11 | 2013-04-11 | Bow-tie wideband microstrip antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320191109 CN203218448U (en) | 2013-04-11 | 2013-04-11 | Bow-tie wideband microstrip antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203218448U true CN203218448U (en) | 2013-09-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320191109 Expired - Fee Related CN203218448U (en) | 2013-04-11 | 2013-04-11 | Bow-tie wideband microstrip antenna |
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| CN (1) | CN203218448U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104103897A (en) * | 2014-08-01 | 2014-10-15 | 重庆大学 | Compact UWB (ultra wide band) antenna based on L-shaped parasitic strip |
| CN105024164A (en) * | 2015-06-29 | 2015-11-04 | 蔡桂钧 | UWB (ultra wide band) antenna based on U-shaped groove and L-shaped parasitic strips |
| CN109728430A (en) * | 2019-01-15 | 2019-05-07 | 中国计量大学 | Two-band wearable antenna |
-
2013
- 2013-04-11 CN CN 201320191109 patent/CN203218448U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104103897A (en) * | 2014-08-01 | 2014-10-15 | 重庆大学 | Compact UWB (ultra wide band) antenna based on L-shaped parasitic strip |
| CN104103897B (en) * | 2014-08-01 | 2016-08-24 | 重庆大学 | A kind of compact ultra-wideband antenna based on L-type parasitism band |
| CN105024164A (en) * | 2015-06-29 | 2015-11-04 | 蔡桂钧 | UWB (ultra wide band) antenna based on U-shaped groove and L-shaped parasitic strips |
| CN109728430A (en) * | 2019-01-15 | 2019-05-07 | 中国计量大学 | Two-band wearable antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130925 Termination date: 20140411 |