CN205355250U - Small -size double frequency -band ultra -wideband antenna - Google Patents
Small -size double frequency -band ultra -wideband antenna Download PDFInfo
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- CN205355250U CN205355250U CN201620025900.6U CN201620025900U CN205355250U CN 205355250 U CN205355250 U CN 205355250U CN 201620025900 U CN201620025900 U CN 201620025900U CN 205355250 U CN205355250 U CN 205355250U
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- antenna
- double frequency
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- wideband antenna
- frequency band
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Abstract
The utility model discloses a small -size double frequency -band ultra -wideband antenna, characterized by, including base plate, radiation paster and feeder transport line, radiation paster setting is in the front of base plate, adopts to have T's a shape in the rectangle frame, curve structure through the smoothness between bottom and the feeder transport line of radiation paster is connected, the central angle that level and smooth curve structure's pitch arc corresponds is 90 degrees, back of the substrate's bottom sets up the type of falling T open slot. The utility model discloses the beneficial effect who reaches: 1. This antenna element's size is very little, and is small, and simple structure is with low costs, and antenna gain is high, 2. The working frequency band of antenna is at 2.37GHz -2.57GHz and 3.6GHz -11.7GHz, other day live width of the bandwidth ratio of its HFS, and whole radiant efficiency is good, 3. The usage is more wide in range.
Description
Technical field
This utility model relates to a kind of small capacity double frequency band ultra-wideband antenna, belongs to wireless communication technology field.
Background technology
The fast development of wireless communication technology makes existing frequency spectrum resource growing tension, and power system capacity and transfer rate to radio communication propose increasingly higher requirement.Super-broadband tech due to its low-power consumption, high data transmission rate, high-resolution, low cost, capacity of resisting disturbance is strong, good confidentiality and can with the series of advantages such as other narrow-band communication systems coexist and be subject to paying close attention to of people.Compared to traditional antenna, ultra-wideband antenna design faces more challenge, and traditional broad-band antenna can not undistorted transmission UWB signal.
UWB antenna common at present such as helical antenna, log-periodic antenna, TEM electromagnetic horn, Vivaldi antenna etc. exist that volume is big, structure is complicated, be difficult to the problems such as integrated with miniaturized system.
Utility model content
For solving the deficiencies in the prior art, the purpose of this utility model is in that to provide a kind of small capacity double frequency band ultra-wideband antenna, solves volume little, and simple in construction, cost is low, the needs of problems that impedance bandwidth is very wide, meets the high performance communication of existing wireless communications network.
In order to realize above-mentioned target, this utility model adopts the following technical scheme that:
A kind of small capacity double frequency band ultra-wideband antenna, is characterized in that, including substrate, radiation patch and feeding transmission line；Described radiation patch is arranged on the front of substrate, adopt in a rectangle frame with one fall T shape；It is connected by smooth curvilinear structures between the bottom of described radiation patch and feeding transmission line；The central angle that the camber line of described smooth curvilinear structures is corresponding is 90 degree；Described substrate back is partially covered with copper sheet, and substrate back is provided with inverted T shape open slot；The periphery of described open slot is coated with radiation patch.
Aforesaid small capacity double frequency band ultra-wideband antenna, is characterized in that, described substrate adopts FR4 substrate.
Aforesaid small capacity double frequency band ultra-wideband antenna, is characterized in that, described substrate is of a size of 18mm × 12mm × 1.6m.
Aforesaid small capacity double frequency band ultra-wideband antenna, is characterized in that, the radius of circle that the camber line of described smooth curvilinear structures is corresponding is 2mm.
Aforesaid small capacity double frequency band ultra-wideband antenna, is characterized in that, described inverted T shape open slot is arranged on the middle body of substrate back.
The beneficial effect that this utility model reaches: 1. this antenna element is small-sized, only 18mm × 12mm × 1.6mm, and volume is little, simple in construction, and cost is low, and antenna gain is high；2. the working band of antenna is in 2.37GHz-2.57GHz and 3.6GHz-11.7GHz, other day live width of the bandwidth ratio of its HFS, integral radiation excellent in efficiency, and the efficiency of antenna modeling emulation can up to 78.6%；3. purposes is more wide in range, it is possible to meet the demand that WLAN (2.45GHz), WiMAX (5.25-5.85GHz) and UWB (3.96-10.6GHz) apply.
Accompanying drawing explanation
Fig. 1 (a) (b) is the structural representation of the front and back of this device respectively；
Fig. 2 is the return loss schematic diagram of this device simulation and actual measurement；
Fig. 3 is the gain curve schematic diagram of this device simulation；
Fig. 4 be in this device T-type structure affect schematic diagram；
Fig. 5 (a) (b) is direction, xoz and the yoz face schematic diagram that this device is surveyed when 2.45GHz frequency and emulated respectively；
Fig. 6 (a) (b) is direction, xoz and the yoz face schematic diagram that this device is surveyed when 5GHz frequency and emulated respectively.
The implication of accompanying drawing labelling:
1-substrate, 2-radiation patch, 3-feeding transmission line, 4-open slot, the curvilinear structures that 5-is smooth.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is further described.Following example are only for clearly illustrating the technical solution of the utility model, and can not limit protection domain of the present utility model with this.
As it is shown in figure 1, give the concrete size of antenna in the present embodiment, in figure, the unit of size is mm.Whole antenna is laid on the FR4 substrate of 18mm × 12mm × 1.6mm, and the loss corner cut of FR4 material is tan δ=0.02, DIELECTRIC CONSTANT εr=4.4.The front of antenna is that a rectangle tundish is containing a T-type structure, the back side (be not namely whole substrate back is all metal ground for incomplete ground, substrate back is not all of applying copper as floor, only part is covered by copper sheet), incomplete ground is provided with a T-shaped open slot, and whole antenna can be carried out electric capacity coupling by this T-shaped open slot.Considering from symmetry, T-shaped open slot particular location is at middle body, and otherwise the directional diagram of antenna can be asymmetric, and the radiation patch around backside openings groove is floor.
Curvilinear structures smooth in this device is of value to the acquisition of ultra broadband, is a kind of ultra broadband structure, and by changing the radius of circle of correspondence, the impedance matching of antenna also can change therewith.In the present embodiment, the radius of 2mm is adopted.
Such as Fig. 2, solid line is the simulated return loss curve of designing antenna, and the frequency band range of-10dB is 2.37GHz-2.57GHz and 3.6GHz-11.7GHz.In figure, dotted line is make the actual measured results that antenna is in kind,-10dB frequency band range is 2.42GHz-2.63GHz and 3.84GHz-10.1GHz, WLAN protocol can be met, the partial-band of WiMAX agreement and UWB requires (demand that WLAN (2.45GHz), WiMAX (5.25-5.85GHz) and UWB (3.96-10.6GHz) apply).
If Fig. 3 is the gain curve of antenna emulation, antenna is-2.2dBi and 4.8dBi at the average gain of low frequency part and HFS respectively.
Fig. 4 is the impact of T-type structure in antenna.The clearance distance between T-type structure and outer rectangle within antenna structure is give s in s, figure to change from 0.1mm-0.4mm, the impact on antenna return loss curve.
Such as Fig. 5, the xoz face directional diagram that figure (a) is 2.45GHz frequency, figure (b) is the yoz face directional diagram of 2.45GHz frequency.
Such as Fig. 6, the xoz face directional diagram that figure (a) is 5GHz frequency, figure (b) is the yoz face directional diagram of 5GHz frequency.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the premise without departing from this utility model know-why; can also making some improvement and deformation, these improve and deformation also should be regarded as protection domain of the present utility model.
Claims (5)
1. a small capacity double frequency band ultra-wideband antenna, is characterized in that, including substrate, radiation patch and feeding transmission line；Described radiation patch is arranged on the front of substrate, adopt in a rectangle frame with one fall T shape；It is connected by smooth curvilinear structures between the bottom of described radiation patch and feeding transmission line；The central angle that the camber line of described smooth curvilinear structures is corresponding is 90 degree；Described substrate back is partially covered with copper sheet, and substrate back is provided with inverted T shape open slot；The periphery of described open slot is coated with radiation patch.
2. small capacity double frequency band ultra-wideband antenna according to claim 1, is characterized in that, described substrate adopts FR4 substrate.
3. small capacity double frequency band ultra-wideband antenna according to claim 2, is characterized in that, described substrate is of a size of 18mm × 12mm × 1.6mm.
4. small capacity double frequency band ultra-wideband antenna according to claim 1, is characterized in that, the radius of circle that the camber line of described smooth curvilinear structures is corresponding is 2mm.
5. small capacity double frequency band ultra-wideband antenna according to claim 1, is characterized in that, described inverted T shape open slot is arranged on the middle body of substrate back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620025900.6U CN205355250U (en) | 2016-01-12 | 2016-01-12 | Small -size double frequency -band ultra -wideband antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620025900.6U CN205355250U (en) | 2016-01-12 | 2016-01-12 | Small -size double frequency -band ultra -wideband antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205355250U true CN205355250U (en) | 2016-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620025900.6U Expired - Fee Related CN205355250U (en) | 2016-01-12 | 2016-01-12 | Small -size double frequency -band ultra -wideband antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205355250U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105576364A (en) * | 2016-01-12 | 2016-05-11 | 南京信息工程大学 | Miniature dual-band ultra-wideband antenna |
-
2016
- 2016-01-12 CN CN201620025900.6U patent/CN205355250U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105576364A (en) * | 2016-01-12 | 2016-05-11 | 南京信息工程大学 | Miniature dual-band ultra-wideband antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160629 Termination date: 20180112 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |