CN204497369U - Non-closed circular wideband microstrip printed antenna - Google Patents
Non-closed circular wideband microstrip printed antenna Download PDFInfo
- Publication number
- CN204497369U CN204497369U CN201520215393.8U CN201520215393U CN204497369U CN 204497369 U CN204497369 U CN 204497369U CN 201520215393 U CN201520215393 U CN 201520215393U CN 204497369 U CN204497369 U CN 204497369U
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- closed circular
- antenna
- microstrip
- feed line
- radiation patch
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Abstract
The utility model discloses one non-closed circular wideband microstrip printed antenna.This antenna is made up of medium substrate, non-closed circular radiation patch, " h " shape minor matters, microstrip feed line and ground plane.Non-closed circular radiation patch is connected with microstrip feed line and is printed on the both sides of medium substrate with ground plane respectively, and non-closed circular structure opens rectangular channel by circulus upper right side become, and its lower right connects with " h " shape minor matters.The utility model wideband microstrip printed antenna produces resonance on two frequency bins, and its resonance frequency is respectively 2.4GHz and 5.2GHz, and frequency range is respectively: 2.31GHz-2.52GHz and 4.35GHz-6.27GHz.Can be applicable to the communications fields such as bluetooth equipment, wireless access communication equipment and WLAN (wireless local area network).The small volume of antenna, make structure quite simple, in passband, coupling is good, and the regulable center frequency of this antenna.
Description
Technical field
The utility model belongs to wireless communication field, particularly relates to one non-closed circular wideband microstrip printed antenna.
Background technology
Along with the fast development of radio communication, the requirement of people to antenna is more and more higher.The frequency band that different wireless communication systems adopts is not quite similar, particularly WLAN (wireless local area network) (Wireless Local Area Network, WLAN) proposition, makes the design of single frequency band, large-size antennae can not adapt to the demand of Current wireless communication.If require the launching and receiving process do not affected between wireless signal and hardware device, and multiple communication system can be allowed to realize synchronous working, the antenna of a kind of compact dual-frequency or multiband just must be designed.Microstrip antenna because its volume is little, cost is low, structure is simple, be easy to processing and easily realize the advantages such as multiple-frequency operation, be widely used in Wireless Telecom Equipment.
The method realizing compact dual-frequency microstrip antenna at present has: a. adopts single paster, utilizes two kinds of different modes to realize work; B. multiple-layer overlapped paster structure is adopted; C. single layer substrate and many mount technologies is adopted.As the people such as Li Weiye devise a kind of antenna being applied in 2.4GHz, 5.2GHz and 5.8GHz tri-frequency bands in " a kind of WLAN tri-frequency-band antenna design be applied in mobile phone ", two L shape branch roads are utilized to produce dual frequency radiation, successfully achieve the tri-band antenna that can be operated in WLAN frequency range, structure is simple, volume is little, but this antenna still cannot be avoided in major defects such as the not good and gain of the reflection coefficient at 5.2GHz and 5.8GHz frequency place are low.
Summary of the invention
The utility model wideband microstrip printed antenna adopts non-closed circular structure, opens a rectangular channel in ring-type radiation patch upper right side, its lower right connects " h " shape minor matters, successfully achieves the dual-band antenna that can be operated in WLAN frequency range.By regulating the size of rectangular channel and " h " shape minor matters, can resonance frequency be adjusted, 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 wideband microstrip printed antenna comprises medium substrate, non-closed circular radiation patch, " h " shape minor matters, microstrip feed line and ground plane, it is characterized in that: described medium substrate front is printed with non-closed circular radiation patch and microstrip feed line, a rectangular channel has been opened in non-closed circular radiation patch upper right side, its inside connects with " h " shape minor matters, described microstrip feed line is connected with non-closed circular radiation patch, microstrip feed line is in the middle, bottom surface in medium substrate front, symmetrical structure, described medium substrate back up has ground plane.
This programme effect is: by ring-type radiation patch internal notches, reduce the area of aerial radiation paster, reduce the size of antenna; By changing the length and location of rectangular channel and " h " shape minor matters, centre frequency and frequency band range can be regulated, realize good impedance matching.
Accompanying drawing explanation
Fig. 1 is the front elevation of the utility model wideband microstrip printed antenna.
Fig. 2 is the back view of the utility model wideband microstrip printed antenna.
Fig. 3 is the return loss plot figure of the utility model wideband microstrip printed antenna.
Fig. 4 is the voltage standing wave ratio curve chart of the utility model wideband microstrip printed antenna.
Fig. 5 is the antenna pattern of the utility model wideband microstrip printed antenna at 2.4GHz.
Fig. 6 is the antenna pattern of the utility model wideband microstrip printed antenna at 5.2GHz.
Fig. 7 is the antenna pattern of the utility model wideband microstrip 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 wideband microstrip printed antenna is made up of medium substrate 1, microstrip feed line 2, non-closed circular radiating element 3, " h " shape minor matters 4 and ground plane 5.
Specifically be implemented as follows: medium substrate 1 front is printed with non-closed circular radiating element 3, " h " shape minor matters 4 and microstrip feed line 2, and microstrip feed line 2 is positioned at the below in medium substrate 1 front, symmetrical; Wherein non-closed circular radiating element 3 is divided equally by about axis, and it is merged by a rectangle and a circular central to form, and cut away a circle in its middle, makes it become a ring-type, and then open a rectangular channel in ring-type upper right side; " h " shape minor matters 4 are connected on the lower right of radiating element 3; Ground plane 5 is positioned at the below at medium substrate 1 back side.
See Fig. 1 and Fig. 2, the non-closed circular radiation patch of antenna, " h " shape minor matters, 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 40mm × 26mm × 1.6mm; Label 2 is microstrip feed lines, and its length and width are of a size of 14mm × 3.4mm, and microstrip feed line is on the axis of medium substrate 1, symmetrical; Label 3 is non-closed circular radiating elements, it is combined by a rectangle and a large circle, then cut away a small circular in its middle, and open a rectangular channel in its upper right side, wherein combining rectangular aspect size is 19.6mm × 11.2mm, combination circular radius is 8.8mm, combination center is apart from microstrip feed line center 17mm, and small circular radius is 6.5mm, and rectangular channel length and width size is 7mm × 1.5mm, rectangular channel top and small circular inscribe, rectangular channel left end and axis overlap; Label 4 is " h " shape minor matters, and its each section of width is all 1.2mm, and " h " shape left side rectangle length is 5.8mm, symmetrical up and down about intermediate rectangular, intermediate rectangular length 2.6mm, the right rectangle length 7.2mm; Label 5 is ground planes, and its length and width are of a size of 26mm × 13mm.
Fig. 3 is the return loss plot of the present embodiment, and antenna return loss in 2.31GHz-2.52GHz and 4.35GHz-6.27GHz 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 and Fig. 7 are the directional diagram of the present embodiment this antenna when frequency 2.4GHz, 5.2GHz and 5.8GHz respectively, and as can be seen from the figure the present embodiment far field radiation characteristics in whole frequency range is fine, meets design requirement.
Above-mentioned example is the utility model preferably execution mode, on the basis of the present embodiment, changes the shape of non-closed circular radiation patch, and shape and the position of " h " shape minor matters are all included in protection range of the present utility model.
Claims (3)
1. a non-closed circular wideband microstrip printed antenna, its composition comprises medium substrate, non-closed circular radiation patch, " h " shape minor matters, microstrip feed line and ground plane, it is characterized in that: medium substrate front is printed with non-closed circular radiation patch, " h " shape minor matters and microstrip feed line, described microstrip feed line is connected with non-closed circular radiation patch, microstrip feed line is in the middle, bottom surface in medium substrate front, symmetrical structure, described medium substrate back up has ground plane.
2. one according to claim 1 non-closed circular wideband microstrip printed antenna, its feature comprises: the upper right side of described non-closed circular radiation patch inside has a rectangular channel.
3. one according to claim 1 non-closed circular wideband microstrip printed antenna, its feature comprises: described non-closed circular radiation patch inside connects with " h " shape minor matters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520215393.8U CN204497369U (en) | 2015-04-13 | 2015-04-13 | Non-closed circular wideband microstrip printed antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520215393.8U CN204497369U (en) | 2015-04-13 | 2015-04-13 | Non-closed circular wideband microstrip printed antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204497369U true CN204497369U (en) | 2015-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520215393.8U Expired - Fee Related CN204497369U (en) | 2015-04-13 | 2015-04-13 | Non-closed circular wideband microstrip printed antenna |
Country Status (1)
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| CN (1) | CN204497369U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106816701A (en) * | 2017-01-16 | 2017-06-09 | 西安电子科技大学 | Double frequency round polarized microstrip antenna |
| CN108649332A (en) * | 2018-04-23 | 2018-10-12 | 歌尔科技有限公司 | A kind of multifrequency microstrip antenna and electronic equipment |
| CN112909526A (en) * | 2021-01-22 | 2021-06-04 | 宁波大学 | Dual-frequency point ultrahigh-frequency bandwidth tagged antenna |
-
2015
- 2015-04-13 CN CN201520215393.8U patent/CN204497369U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106816701A (en) * | 2017-01-16 | 2017-06-09 | 西安电子科技大学 | Double frequency round polarized microstrip antenna |
| CN108649332A (en) * | 2018-04-23 | 2018-10-12 | 歌尔科技有限公司 | A kind of multifrequency microstrip antenna and electronic equipment |
| CN112909526A (en) * | 2021-01-22 | 2021-06-04 | 宁波大学 | Dual-frequency point ultrahigh-frequency bandwidth tagged antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161228 Address after: Double Town Industrial Park 300222 Tianjin District of Jinnan City Industrial Park building 45 109-3 Spa Patentee after: Tianjin dragon Maoming Wei Technology Co., Ltd. Address before: 300222 Dagu South Road, Jinnan District, No. 1310, No. Patentee before: Tianjin University of Technology and Education |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150722 Termination date: 20160413 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |