CN204103041U - A kind of small-sized three frequency range gap printed antennas - Google Patents
A kind of small-sized three frequency range gap printed antennas Download PDFInfo
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- CN204103041U CN204103041U CN201420586957.4U CN201420586957U CN204103041U CN 204103041 U CN204103041 U CN 204103041U CN 201420586957 U CN201420586957 U CN 201420586957U CN 204103041 U CN204103041 U CN 204103041U
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Abstract
The utility model discloses a kind of small-sized three frequency range gap printed antennas.This antenna is made up of medium substrate, radiation patch, microstrip feed line, ground plane.Radiation patch is connected with microstrip feed line, and is printed on the both sides of medium substrate respectively with ground plane, and radiation patch is rectangular configuration, and wherein rectangular radiation patch inside has rectangular channel and closed annular groove, ground plane has untight annular slot.The utility model three frequency range printed antenna produces resonance on three frequencies, and its resonance frequency is respectively 2.4GHz, 3.5GHz and 5.8GHz, and frequency range is respectively: 2.40-2.51GHz, 3.49-3.65GHz and 5.71-5.82GHz.Can be applicable to the communications fields such as bluetooth equipment, wireless access communication equipment and WLAN (wireless local area network).
Description
Technical field
The utility model belongs to wireless communication field, particularly relates to a kind of printed antenna adopting gap radiation mechanism.
Background technology
Along with the miniaturization of wireless device, the requirement of people to antenna is more and more higher, and the antenna of single frequency band can not meet the demand of people, and the design being therefore operated in multiple band antenna seems particularly important.Such as, working frequency range is the three-frequency antenna of 2.4GHz, 3.5GHz and 5.8GHz, uses relatively more frequent, the more important thing is in Military Application and in daily life, and these three frequency ranges are special frequency channel of WLAN (wireless local area network) and worldwide interoperability for microwave access.
At present in order to realize Miniaturized multiband antenna, general employing multilayer technique and many mount technologies, these two kinds of methods the most easily realize.For multilayer technique and many mount technologies, its principle is exactly the corresponding frequency range of a radiation source, the corresponding multiband of many radiating elements.Such as, Zhang Yang proposes a kind of novel parasitic minor matters three frequency-band antenna in master's thesis, adopt be many mount technologies and fluting floor on load parasitic circular open loop technique, successfully achieve the tri-band antenna that can be operated in worldwide interoperability for microwave access and wireless local area network band, but still there is antenna structure more complicated, the obvious defect of the not good grade of reflection coefficient.
Summary of the invention
The utility model three frequency range gap printed antenna adopts rectangular radiation patch, rectangular radiation patch is opened a closed annular groove and three rectangular channels, opens a untight annular slot in addition, can reach the object optimizing impedance bandwidth on ground plane.By regulating the size of rectangular channel, also can regulate the characteristic impedance of microstrip line, thus reaching the object of widening frequency band.
The utility model adopts following technical scheme:
The utility model three frequency range gap printed 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 and microstrip feed line.Described radiation patch is rectangular configuration, and its inside has three rectangular channels and a closed circular annular groove, and rectangular channel is equidistantly engraved in the lower right of rectangular radiation patch respectively, and closed circular annular groove is engraved in the lower left of rectangular radiation patch.Described microstrip feed line, in position to the right, the bottom surface in medium substrate front, belongs to eccentric feed, is connected with radiation patch.Described medium substrate back up has ground plane, and is carved with untight annular slot, and this circle ring center is at the center of ground plane.
This programme effect is: by rectangular radiation patch internal notches, efficiently reduce the area of aerial radiation paster, reduce the size of antenna; By changing the length and location of rectangular channel, frequency bandwidth can be regulated; By suitably adjusting radius and the position of annular groove and annular slot, can centre frequency be regulated, and realize good impedance matching.
Accompanying drawing explanation
Fig. 1 is the front elevation of the utility model three frequency range gap printed antenna.
Fig. 2 is the back view of the utility model three frequency range gap printed antenna.
Fig. 3 is the return loss plot figure of the utility model three frequency range gap printed antenna.
Fig. 4 is the voltage standing wave ratio curve chart of the utility model three frequency range gap printed antenna.
Fig. 5 is the antenna pattern of the utility model three frequency range gap printed antenna at 2.4GHz.
Fig. 6 is the antenna pattern of the utility model three frequency range gap printed antenna at 3.5GHz.
Fig. 7 is the antenna pattern of the utility model three frequency range gap printed antenna at 5.8GHz.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail.
See Fig. 1 and Fig. 2, this three frequency ranges printed-gap antenna is made up of medium substrate 1, microstrip feed line 2, radiating element 3, rectangular channel 4, closed circular annular groove 5, ground plane 6 and non-closed circle gap 7.
Specifically be implemented as follows: radiating element 3 is positioned at the top in medium substrate 1 front, microstrip feed line 2 is positioned at the lower right in medium substrate 1 front.Radiating element 3 is divided equally by about axis, three spacing, width are equal, length rectangular channel 4 not etc. is opened in the lower right of radiating element 3, the annular groove 5 closed is opened in the lower left of radiating element 3, ground plane 6 is positioned at the below at medium substrate 1 back side, non-closed circle gap 7 is opened on ground plane 6, is positioned at the center of ground plane.
See Fig. 1, Fig. 2, the radiation patch of antenna, ground plane and microstrip feed line, represent by grey in the drawings, the shape of antenna can be obtained by corrosion.In the present embodiment, label 1 is medium substrate, and its material is polytetrafluoroethylene (FR-4), and its dielectric constant is 4.4, and the size of its length and width thickness is 35mm × 32mm × 1.5mm; Label 2 is microstrip feed lines, and its length and width are of a size of 11mm × 2.4mm, and the center, base of microstrip feed line is at 3.7mm place to the right, the center, base of medium substrate 1; Label 3 is rectangular radiation element, and length and width size is 17.5mm × 26mm; Label 4 is three rectangular channels, nethermost rectangular channel is from 1mm bottom rectangular radiation patch, and its length and width size is 1mm × 6mm, and middle rectangular channel length and width size is also 1mm × 6mm, uppermost rectangular channel length and width size is 1mm × 7mm, and two adjacent rectangular channel spacings are all 1mm; Label 5 is closed annular grooves, and wherein large radius of circle is 3.5mm, and little radius of circle is 3mm, the distance of center circle rectangular patch base 4.5mm of two circles, apart from left 8mm; Label 6 is ground planes, and its length and width are of a size of 22mm × 32mm; Label 7 is non-closed circle gaps, and wherein large radius of circle is 9.5mm, and little radius of circle is 9mm, closed annular slot be of a size of by length and width the rectangle of 6.5mm × 6mm fill up, this rectangular centre is apart from ground plane base 8.25mm, apart from 7mm place, left.
Fig. 3 is the return loss plot of the present embodiment, and antenna return loss in 2.40GHz-2.51GHz, 3.49GHz-3.65GHz and 5.71GHz-5.82GHz frequency range is less than-10dB as seen from Figure 3.Fig. 4 is the voltage standing wave ratio curve chart of the present embodiment, can find out all to be less than 2 in the voltage standing wave ratio of above-mentioned frequency range internal antenna.Fig. 5, Fig. 6, Fig. 7 and Fig. 8 are the directional diagram of the present embodiment this antenna when frequency 2.4GHz, 3.5GHz and 5.8GHz respectively, and as can be seen from the figure the present embodiment has certain directivity in whole frequency range, meets design requirement.
Above-mentioned example is the utility model preferably execution mode; in addition on the basis of the present embodiment; change the position of microstrip feed line, rectangular channel and the position of closed circular annular groove and the size and dimension of size and non-closed circle gap structure, all should be included in protection range of the present utility model.
Claims (5)
1. small-sized three frequency range gap printed antennas, its composition comprises medium substrate, radiation patch, microstrip feed line, ground plane, it is characterized in that: described medium substrate front is printed with radiation patch and microstrip feed line, radiation patch is connected with microstrip feed line, microstrip feed line is in position to the right, the bottom surface in medium substrate front, described medium substrate back up has ground plane, and rectangular channel and annular groove are all opened in radiation patch, and gap is opened on ground plane.
2. the small-sized three frequency range gap printed antennas of one according to claim 1, its feature comprises: the feeding classification that described microstrip feed line adopts is offset-fed.
3. the small-sized three frequency range gap printed antennas of one according to claim 1, its feature comprises: have three rectangular channels in described radiation patch, and three rectangular channels are equidistantly placed, and are positioned at the lower right position of radiation patch.
4. the small-sized three frequency range gap printed antennas of one according to claim 1, its feature comprises: have a closed circular annular groove in described radiation patch, and closed circle slot is in position, radiation patch lower left.
5. the small-sized three frequency range gap printed antennas of one according to claim 1, its feature comprises: described ground plane is carved with untight annular slot, and this gap is positioned at the center of ground plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420586957.4U CN204103041U (en) | 2014-10-13 | 2014-10-13 | A kind of small-sized three frequency range gap printed antennas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420586957.4U CN204103041U (en) | 2014-10-13 | 2014-10-13 | A kind of small-sized three frequency range gap printed antennas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204103041U true CN204103041U (en) | 2015-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420586957.4U Expired - Fee Related CN204103041U (en) | 2014-10-13 | 2014-10-13 | A kind of small-sized three frequency range gap printed antennas |
Country Status (1)
| Country | Link |
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| CN (1) | CN204103041U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105789876A (en) * | 2016-04-19 | 2016-07-20 | 重庆大学 | Compact type ultra-wideband antenna based on parasitic strip |
| CN107230839A (en) * | 2017-06-26 | 2017-10-03 | 广东欧珀移动通信有限公司 | Antenna tuning structure and mobile terminal |
| CN110459866A (en) * | 2019-08-09 | 2019-11-15 | 武汉慧联无限科技有限公司 | A kind of gap structure trap antenna and the gateway with the antenna |
-
2014
- 2014-10-13 CN CN201420586957.4U patent/CN204103041U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105789876A (en) * | 2016-04-19 | 2016-07-20 | 重庆大学 | Compact type ultra-wideband antenna based on parasitic strip |
| CN107230839A (en) * | 2017-06-26 | 2017-10-03 | 广东欧珀移动通信有限公司 | Antenna tuning structure and mobile terminal |
| CN110459866A (en) * | 2019-08-09 | 2019-11-15 | 武汉慧联无限科技有限公司 | A kind of gap structure trap antenna and the gateway with the antenna |
| CN110459866B (en) * | 2019-08-09 | 2021-04-06 | 武汉慧联无限科技有限公司 | Slot structure notch antenna and gateway equipment with same |
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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: 20150114 Termination date: 20161013 |