CN203288743U - G-shaped ultra-wideband antenna - Google Patents
G-shaped ultra-wideband antenna Download PDFInfo
- Publication number
- CN203288743U CN203288743U CN2013201327685U CN201320132768U CN203288743U CN 203288743 U CN203288743 U CN 203288743U CN 2013201327685 U CN2013201327685 U CN 2013201327685U CN 201320132768 U CN201320132768 U CN 201320132768U CN 203288743 U CN203288743 U CN 203288743U
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- medium substrate
- antenna
- ultra
- wideband antenna
- shaped
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Abstract
The utility model discloses a G-shaped ultra-wideband antenna constituted by a medium substrate, a radiation paster, a microstrip feeder line, and a ground plane. The radiation paster and the microstrip feeder line are connected together, and then are disposed on one side of the medium substrate in a printed manner, and the ground plane is disposed on the other side in a printed manner. A radiator is provided with a G-shaped structure, and is disposed in the front surface of the medium substrate, and is provided with an opening facing right. The radiation paster is connected with the microstrip feeder line, and a ladder-shaped transition line is connected between the G-shaped radiation paster and the microstrip feeder line, and therefore an oblique triangle convergence structure can be formed. The ground plane is disposed under the back surface of the medium substrate, and is provided with a bowl-shaped groove, and the opening of the bowl faces upwards, and in addition, a central symmetric structure is formed.
Description
Technical field
The utility model belongs to field of antenna, a kind of G shape of special design ultra-wideband antenna.
Background technology
Wireless communication system, just towards the future development of broadband and miniaturization, more and more needs function admirable and the less device of size in communication equipment, the integrated level of equipment is improved and cost.Super-broadband tech has the advantages such as data transmission rate is high, insensitive and system complexity is low to channel fading, FCC incorporated the 3.1-10.6GHz frequency range into the citizens' radio band of ultra broadband in 2002, in wireless communication protocol, again this frequency range is divided into three frequency sub-band of 3.1-4.75GHz, 4.75-7.92GHz and 7.92-10.6GHz.After this, effectively apply these frequency ranges and just become the emphasis of technical research.Antenna is the vitals in communication equipment, in Miniaturization Design, makes antenna can cover above-mentioned band group, becomes the direction that people make great efforts.Therefore, a lot of antenna forms are studied, such as Archimedian spiral antenna, equiangular spiral antenna and logarithm periodic antenna etc., and these antenna structure realizes the broadband unique advantage that has.Every kind of Antenna Design has its pluses and minuses, as Yang Pengfei, Liu leaps up etc. and to propose a kind of many composite screws of miniature ultra wide band Antenna Design at " national microwave and millimeter wave proceeding in 2011 ", antenna has good impedance matching and radiation characteristic in very wide frequency band, but its size is larger, is difficult to be applied in handheld device.
The utility model content
For the deficiencies in the prior art, the utility model ultra-wideband antenna adopts G type spiral radiation paster, and angle and width by adjustable screw can change CURRENT DISTRIBUTION, weaken end effect; Regulate the contraction shape near the microstrip feed line part, improve its impedance matching property.Obtain size ultra-wideband antenna antenna little, simple in structure.
The utility model adopts following technical scheme:
The utility model ultra-wideband antenna comprises medium substrate, radiation patch, microstrip feed line, ground plane, it is characterized in that: described medium substrate front is printed with radiation patch, microstrip feed line and convergence structure, described microstrip feed line is connected with radiation patch, and the back up of medium substrate has ground plane.The radiation patch of described antenna is G shape structure and is positioned at the medium substrate front, and to the right, G shape structure below microstrip feed line is positioned at the centre position of medium substrate to opening.Described ground plane is positioned at the medium substrate lower rear, and opens the bowl-type groove, and the bowl-type mouth upwards, is centrosymmetric.Described radiation patch is connected with microstrip feed line, between G shape radiation patch and microstrip feed line, adopts trapezoidal transition line, is oblique triangle convergence structure.
This programme beneficial effect: reduce antenna size by adopting a part of Archimedian spiral antenna, when large away from the impedance comparison of feed end, near the constringent transition line of feed end, can obtain good impedance matching, improve the beamwidth of antenna, realize ultra broadband; Ground plate is opened the bowl-type groove, improves S
11Parameter, improve the stability of impedance matching simultaneously.
Description of drawings
Fig. 1 is the front elevation of the utility model ultra-wideband antenna.
Fig. 2 is the reverse side figure of the utility model ultra-wideband antenna.
Fig. 3 is the return loss plot figure of the utility model ultra-wideband antenna.
Fig. 4 is the standing-wave ratio curve chart of the utility model ultra-wideband antenna.
Fig. 5 is the input impedance curve chart of the utility model ultra-wideband antenna.
Fig. 6 is the antenna pattern of the utility model ultra-wideband antenna at 5GHz.
Fig. 7 is the antenna pattern of the utility model ultra-wideband antenna at 7GHz.
Fig. 8 is the antenna pattern of the utility model ultra-wideband antenna at 9GHz.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail.
A kind of G shape ultra-wideband antenna design covers the 4.0-11.5GHZ frequency range, and this antenna is comprised of spiral radiation paster 1, medium substrate 2, coupling convergence structure 3, microstrip line 4, ground plate 5.
Specific embodiments is as follows: radiation patch 1 is positioned at medium substrate 2 tops, and the below that microstrip feed line 3 is positioned at medium substrate 2 is connected with radiation patch, and both are positioned at the central authorities of medium substrate 2.Adopt convergence structure 3 between radiation patch and microstrip line.Ground plate is positioned at below dielectric-slab 2, bowl-type fluting ground plate 5, opening upwards, occupy ground plate under central authorities, Central Symmetry.
Referring to Fig. 1 and Fig. 2, label 2 is medium substrate, and its material is polytetrafluoroethylene (FR-4), and its dielectric constant is 4.4, and the high size of length and width is 25mm * 25mm * 1.6mm.The wide 3mm of spiral radiation paster in antenna G shape structure, spiral angle is 1.5 * π degree; Microstrip line length and width size 3mm * 7mm; Convergence structure length and width are of a size of 0.5mm * 0.2mm; Ground plate bowl shaped structure radius 10mm, at the bottom of the bowl shaped structure bowl, rectangle is that length and width are of a size of 4mm * 1mm.
Fig. 4 is the reflection coefficient chart of the present embodiment, and the impedance bandwidth of antenna is 4.0-11.5GHz as can see from Figure 4, reaches the frequency band requirement of FCC, in this band frequency scope return loss greater than-10dB; Fig. 5 is the standing-wave ratio curve chart of the present embodiment, the voltage standing wave ratio of antenna at 4.0-11.5GHz all less than 2.Fig. 6 is the impedance parameter of antenna, and is little in the 4.0-11.5GHz impedance variation, cashes good stability characteristic (quality).Fig. 7, Fig. 8, shown in Figure 9 be respectively the antenna pattern of the present embodiment when 5GHz, 7GHz, 9GHz, can find out that antenna has horizontal omnidirectional preferably, meets design requirement.
Above-mentioned example is the better execution mode of the utility model, on the basis of the present embodiment, changes the size of radiation patch, microstrip feed line and ground plane in addition; Change the size of bowl-type groove and convergence structure, all should be included in protection range of the present utility model.
Claims (3)
1. G shape ultra-wideband antenna, it is characterized in that: the medium substrate front is printed with radiation patch, microstrip feed line and convergence structure, and described microstrip feed line is connected with radiation patch, and the back up of medium substrate has ground plane.
2. G shape ultra-wideband antenna as claimed in claim 1 is characterized in that: the radiation patch of described antenna is G shape structure and is positioned at the medium substrate front, and to the right, G shape structure below microstrip feed line is positioned at the centre position of medium substrate to opening.
3. G shape ultra-wideband antenna as claimed in claim 1, it is characterized in that: described ground plane is positioned at the medium substrate lower rear, and opens the bowl-type groove, and the bowl-type mouth upwards, is centrosymmetric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201327685U CN203288743U (en) | 2013-03-22 | 2013-03-22 | G-shaped ultra-wideband antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201327685U CN203288743U (en) | 2013-03-22 | 2013-03-22 | G-shaped ultra-wideband antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203288743U true CN203288743U (en) | 2013-11-13 |
Family
ID=49545090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013201327685U Expired - Fee Related CN203288743U (en) | 2013-03-22 | 2013-03-22 | G-shaped ultra-wideband antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203288743U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109921168A (en) * | 2019-02-16 | 2019-06-21 | 江苏中科智睿物联网科技有限公司 | A kind of flare shape super wide band plane single pole sub antenna |
-
2013
- 2013-03-22 CN CN2013201327685U patent/CN203288743U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109921168A (en) * | 2019-02-16 | 2019-06-21 | 江苏中科智睿物联网科技有限公司 | A kind of flare shape super wide band plane single pole sub 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131113 Termination date: 20160322 |