CN106602240A - Printed F-inverted antenna suitable for Bluetooth communication - Google Patents
Printed F-inverted antenna suitable for Bluetooth communication Download PDFInfo
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- CN106602240A CN106602240A CN201510666976.7A CN201510666976A CN106602240A CN 106602240 A CN106602240 A CN 106602240A CN 201510666976 A CN201510666976 A CN 201510666976A CN 106602240 A CN106602240 A CN 106602240A
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Abstract
The present invention discloses a printed F-inverted antenna suitable for Bluetooth communication. The antenna is provided with a radiating element, a short circuit micro-strip piece, a feeding point and an earth plate. One ends of the short circuit micro-strip piece and the feeding point are connected with the radiating element, the other ends of the short circuit micro-strip piece and the feeding point are connected with the earth plate, the bandwidth coverage frequency band range is from 2300MHz to 2500MHz, the center frequency point is 2480 MHz, the peak value is -38dB, and the relative bandwidth is 12.09%. The printed F-inverted antenna suitable for Bluetooth communication is small in size, convenient to use, small in return loss and high in gain.
Description
Technical field
The present invention relates to antenna technical field, more particularly to a kind of printing inverse-F antenna suitable for Bluetooth communications.
Background technology
Inverse-F antenna is a kind of distressed structure of monopole antenna, have the advantages that small volume, simple structure are easy to configuration and low manufacture cost, therefore, it is widely used in the short-distance wireless communication such as Bluetooth, IEEE 802.a/b/g, HiperLAN and HomeRF field.In addition because the radiation of inverse-F antenna is not only comprising horizontal polarized components but also comprising perpendicular polarisation components, so for applied environment is mainly the communication standards such as the Bluetooth and WLAN of interior, because indoor wall and ornament scattering can cause the mutual conversion between electric field level polarization and vertical polarization, i.e. depolarization phenomenon, using inverse-F antenna reception can be effectively strengthened.
Bluetooth is a kind of holding equipment short haul connection（Within usually 10m）Radiotechnics, wireless messages exchange is carried out between devices, its working frequency range is the free frequency range of global communication of 2.4～2.483 GHz, is had been widely used at present in a mobile communication device.Antenna is for exporting and reflecting the important important component that letter receives electromagnetic wave energy in Bluetootho Wireless system.At present technology there is no method by aerial integration to semiconductor chip, therefore in bluetooth module in addition to the System on Chip/SoC of core, and antenna is that another affects the critical components of bluetooth module transmission characteristic.
Inverted F shaped antenna is a kind of antenna for growing up last century end, with simple structure, it is lightweight, can conformal, low cost of manufacture, radiation efficiency is high, easily realize multiband the particular advantages such as works, therefore, in recent years, inverted F shaped antenna is widely used research and development.
The metal covering of ground connection is contained in the structure of inverse-F antenna, the sensitivity to grounding metal plane in radio-frequency module can be reduced, therefore be highly suitable for SOC(system on a chip).Further, since inverse-F antenna only need to coordinate appropriate feeder line to adjust antenna short circuit end to the position of earth plate using metallic conductor, thus cost of manufacture is relatively low, directly can weld together with PCB.
The content of the invention
A kind of design of the printed IFA suitable for Bluetooth communications is embodiments provided, the antenna size is little, designs brief, low cost of manufacture, high gain, it is adaptable to Bluetooth system applications.
Wherein, a kind of printing inverse-F antenna suitable for Bluetooth communications includes radiating element, short-circuit micro-band piece, short-circuit micro-band piece, distributing point and earth plate；Wherein, respectively short-circuit micro-band piece and distributing point are connected radiating element, and short-circuit micro-band piece and distributing point are connected respectively with earth plate；Radiating element, short-circuit micro-band piece, distributing point and earth plate are metal copper sheet.
Wherein, the radiating element generally type of falling π structure, its one end is connected with distributing point, and one part is connected with one end of short-circuit micro-band piece, is connected with a kind of circuit board for printing inverse-F antenna matching suitable for Bluetooth communications by distributing point and 50 ohm microstrips.
Wherein, short-circuit micro-band piece is inverted L shape structure, and positioned at radiating element left side edge part, its one end is connected with radiating element, and the other end is connected with earth plate.
Wherein, distributing point is rectangular configuration, is connected with the radiating element and earth plate respectively, directly can be connected with 50 ohm microstrips on PCB.
Wherein, earth plate is rectangular configuration, and its side is connected with short-circuit micro-band piece and distributing point.
Wherein, a kind of generally planar structure of the printing inverse-F antenna suitable for Bluetooth communications, the maximum gain of antenna is 3.5dBi.
Wherein, a kind of printing inverse-F antenna suitable for Bluetooth communications its with a width of 2300MHz-2600MHz, clawback loss is less than -10dB, and center frequency point is 2480MHz, and peak value is -38dB, bandwidth 300MHz.
By such scheme, the invention has the beneficial effects as follows：A kind of printing inverse-F antenna suitable for Bluetooth communications is provided with radiating element, short-circuit micro-band piece, distributing point and earth plate, one end of short-circuit micro-band piece and distributing point connects respectively radiating element, the other end is connected with earth plate, bandwidth covers 2300MHz-2600MHz band limits, center frequency point is 2480MHz, peak value is -38dB, relative bandwidth is 12.09%, meet the engineering design requirements of Bluetooth communications antenna used, the small volume of the antenna, it is easy to integrated and processing, inexpensive, in can be applicable to the terminal of Bluetooth band communications.This is applied to the employing microstrip line form of the printing inverse-F antenna of Bluetooth communications, structure design is the type of falling π structure, it is 3.5dBi on its antenna gain greatest irradiation direction, antenna is printed on a length of 60mm, a width of 30mm, thickness is 1mm, and dielectric constant is on 4.3 FR4 plates, the interlock circuit components and parts of Bluetooth communication equipments can be welded in the another side of pcb board, it is to avoid the antenna communicated using external Bluetooth.
Description of the drawings
Technical scheme in order to be illustrated more clearly that the embodiment of the present invention, the accompanying drawing to be used needed for describing to embodiment below is briefly described, apparently, drawings in the following description are only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with according to these other accompanying drawings of accompanying drawings acquisition.Wherein：
Fig. 1 is a kind of structure chart of the printing inverse-F antenna suitable for Bluetooth communications of the present invention；
Fig. 2 is a kind of printing inverse-F antenna radiating element portion schematic diagram suitable for Bluetooth communications of the present invention；
Fig. 3 is a kind of printing inverse-F antenna short-circuit micro-band piece partial schematic diagram suitable for Bluetooth communications of the present invention；
Fig. 4 is a kind of clawback damage curve figure of the printing inverse-F antenna suitable for Bluetooth communications of the present invention；
Fig. 5 is a kind of gain E faces figure of the printing inverse-F antenna suitable for Bluetooth communications of the present invention；
Fig. 6 is a kind of printing inverse-F antenna impedance variation curve chart suitable for Bluetooth communications.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under the premise of performing creative labour is not made belongs to the scope of protection of the invention.
Shown in Figure 1, Fig. 1 is a kind of structure chart of the printing inverse-F antenna suitable for Bluetooth communications of the present invention, and by the figure structural relation of the antenna sections in the present embodiment is understood.
It is shown in Figure 1, a kind of printing inverse-F antenna suitable for Bluetooth communications disclosed in the present embodiment includes radiating element 1, short-circuit micro-band piece 2, distributing point 3, earth plate 4, wherein, short-circuit micro-band piece 2 and the one end of distributing point 3 respectively be connected radiating element 1 and be connected, the other end is connected respectively with earth plate 4；Distributing point 3 connects radiating element 1 and earth plate 4, and short-movie sheet metal 2 is located at the left side edge part of radiating element 1.Radiation is single 1 yuan, short-circuit micro-band piece 2, distributing point 3 and earth plate 4 are sheet metal.In other embodiments, those skilled in the art can also replace copper using other metal materials, for example gold.
As shown in Figures 1 and 2, Fig. 2 is a kind of printing inverse-F antenna radiating element portion schematic diagram suitable for Bluetooth communications of the present invention, wherein, the generally type of the falling π structure of radiating element 1, this to a certain extent on reduce the shared space on pcb board of antenna, reduce the size of antenna, its one end is connected with distributing point 3, one part is connected with one end of short-circuit micro-band piece 2, for convenience of description, radiating element includes Part I 11, Part II 12, Part III 13, Part IV 14, Part V 15, Part VI 16, totally 6 part.
Preferably, the width of radiating element 1 is 1mm, the length of its Part I 11 be 6mm, the length of Part II 12 be 6mm, the length of Part III 13 be 4mm, the length of Part IV 14 be 4mm, the length of Part V 15 be 4mm, the length of Part VI 16 be 6mm.
As shown in Figures 1 and 3, Fig. 3 is a kind of printing inverse-F antenna short-circuit micro-band piece partial schematic diagram suitable for Bluetooth communications of the present invention.Wherein, short-circuit micro-band piece 2 is inverted L shape structure, and L-type vertical portion is labeled as into 21, and L-type transverse part minute mark is designated as 22, totally 2 parts；Short-circuit micro-band piece 2 is located at the left side edge part of radiating element 1, and its one end is connected with radiating element 1, and the other end is connected with earth plate 4.
Preferably, the width of short-circuit micro-band piece 2 is 1mm, and the length of L-type vertical portion 21 is 7mm, and the length of L-type transverse part point 22 is 5mm, and its short-circuit micro-band piece 2 is 2mm apart from pcb board distance from top, and apart from PCB left sides, distance is 4mm.
Wherein, distributing point is rectangular configuration, is connected with the radiating element and earth plate respectively, directly can be connected with 50 ohm microstrips on PCB.
Preferably, the length and width of distributing point 3 are 1mm.
Wherein, earth plate is rectangular configuration, and its one end is connected with short-circuit micro-band piece and distributing point.
Preferably, the length of earth plate 4 is 50mm, and width is 30mm.
Additionally, it is preferred that, this antenna is integrally printed on a length of 60mm, a width of 30mm, and thickness is 1mm, and dielectric constant is on 4.3 FR4 plates.
As shown in Figure 4, Fig. 4 is a kind of clawback damage curve figure of the printing inverse-F antenna suitable for Bluetooth communications of the present invention, can show that antenna clawback loss in 2300MHz-2600MHz band limits is less than -10dB from figure, center frequency point is 2480MHz, and peak value is -38dB.A kind of a width of 300MHz of printing inverse-F antenna band suitable for Bluetooth communications, relative bandwidth is 12.09%.Relative to the relative bandwidth typically only 6% of microstrip antenna, and for the inverse-F antenna of thin wire composition, its relative bandwidth generally only has 1%, so this beamwidth of antenna is wider, meets using the engineering design requirements of antenna.
As shown in Figure 5, Fig. 5 is a kind of gain E faces figure of the printing inverse-F antenna suitable for Bluetooth communications of the present invention, a kind of gain printed on inverse-F antenna greatest irradiation direction suitable for Bluetooth communications is 3.5dBi, and gain level meets antenna works design requirement.
As shown in Figure 6, Fig. 6 is a kind of printing inverse-F antenna impedance variation curve chart suitable for Bluetooth communications, on frequency 2480MHz, the resistance value of antenna is 49.6119+1.0949j, this antenna impedance value is close 50 ohm, do not need periphery match circuit directly can be connected with pcb board to a certain extent, the interlock circuit components and parts of Bluetooth communication equipments can be welded in the another side of pcb board, it is to avoid the antenna communicated using external Bluetooth.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; equivalent structure or equivalent flow conversion that every utilization description of the invention and accompanying drawing content are made; or other related technical fields are directly or indirectly used in, it is included within the scope of the present invention.
Claims (8)
1. it is a kind of suitable for Bluetooth communication printing inverse-F antenna, it is characterised in that it is described, it is a kind of suitable for Bluetooth communication printing inverse-F antenna include radiating element, short-circuit micro-band piece, distributing point and earth plate；Wherein, short-circuit micro-band piece and distributing point one end connection radiating element, the other end is connected with earth plate；Distributing point connects radiating element and earth plate, and short-circuit micro-band piece is located at radiating element left side edge part, and radiating element, short-circuit micro-band piece, distributing point and earth plate are metal copper sheet.
2. it is according to claim 1 it is a kind of suitable for Bluetooth communication printing inverse-F antenna, it is characterized in that, it is described, the radiating element generally type of falling π structure, its one end is connected with distributing point upper end, one part is connected with one end of short-circuit micro-band piece, is connected by distributing point and 50 ohm microstrips and with a kind of circuit board for printing inverse-F antenna matching suitable for Bluetooth communications.
3. a kind of printing inverse-F antenna suitable for Bluetooth communications stated according to claim 1, it is characterised in that the short-circuit micro-band piece is inverted L shape structure, and positioned at radiating element left side edge part, its one end is connected with radiating element, and the other end is connected with earth plate.
4. it is according to claim 1 it is a kind of suitable for Bluetooth communication printing inverse-F antenna, it is characterised in that the distributing point be rectangular configuration, be connected with the radiating element and earth plate respectively, directly can be connected with 50 ohm microstrips on PCB.
5. it is according to claim 1 it is a kind of suitable for Bluetooth communication printing inverse-F antenna, it is characterised in that the earth plate be rectangular configuration, its side is connected with short-circuit micro-band piece and distributing point.
6. it is according to claim 1 it is a kind of suitable for Bluetooth communication printing inverse-F antenna, it is characterized in that, it is described, a kind of frequency range of the printing inverse-F antenna suitable for Bluetooth communications is 2300MHz-2600MHz, the center operating frequency of antenna is 2480MHz, band a width of 300MHz of the return loss less than -10dB.
7. it is according to claim 1 it is a kind of suitable for Bluetooth communication printing inverse-F antenna, it is characterized in that, it is described, a kind of employing microstrip line form of the printing inverse-F antenna suitable for Bluetooth communications, structure design is the type of falling π structure, is 3.5dBi on its antenna gain greatest irradiation direction.
8. it is according to claim 1 it is a kind of suitable for Bluetooth communication printing inverse-F antenna, it is characterized in that, it is described, a kind of printing inverse-F antenna suitable for Bluetooth communications is printed on a length of 60mm, a width of 30mm, thickness is 1mm, and dielectric constant is on 4.3 FR4 plates, the another side of pcb board can weld the interlock circuit components and parts of Bluetooth communication equipments, it is to avoid the antenna communicated using external Bluetooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510666976.7A CN106602240A (en) | 2015-10-16 | 2015-10-16 | Printed F-inverted antenna suitable for Bluetooth communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510666976.7A CN106602240A (en) | 2015-10-16 | 2015-10-16 | Printed F-inverted antenna suitable for Bluetooth communication |
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| Publication Number | Publication Date |
|---|---|
| CN106602240A true CN106602240A (en) | 2017-04-26 |
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| CN201510666976.7A Pending CN106602240A (en) | 2015-10-16 | 2015-10-16 | Printed F-inverted antenna suitable for Bluetooth communication |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110970706A (en) * | 2019-11-20 | 2020-04-07 | 珠海格力电器股份有限公司 | Multimode antenna, terminal, communication method and device of multimode antenna and processor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI242310B (en) * | 2004-12-31 | 2005-10-21 | Advanced Connectek Inc | A dual-band planar inverted-f antenna with a branch line shorting strip |
| KR20070025249A (en) * | 2005-09-01 | 2007-03-08 | 주식회사 팬택 | Internal antenna of mobile communication terminal |
| CN201163659Y (en) * | 2008-01-25 | 2008-12-10 | 南京理工大学 | Plane inverse F shape antenna with serpentine curve structure |
| CN205069862U (en) * | 2015-10-16 | 2016-03-02 | 深圳洲斯移动物联网技术有限公司 | Printing antenna of falling F suitable for bluetooth communication |
-
2015
- 2015-10-16 CN CN201510666976.7A patent/CN106602240A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI242310B (en) * | 2004-12-31 | 2005-10-21 | Advanced Connectek Inc | A dual-band planar inverted-f antenna with a branch line shorting strip |
| KR20070025249A (en) * | 2005-09-01 | 2007-03-08 | 주식회사 팬택 | Internal antenna of mobile communication terminal |
| CN201163659Y (en) * | 2008-01-25 | 2008-12-10 | 南京理工大学 | Plane inverse F shape antenna with serpentine curve structure |
| CN205069862U (en) * | 2015-10-16 | 2016-03-02 | 深圳洲斯移动物联网技术有限公司 | Printing antenna of falling F suitable for bluetooth communication |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110970706A (en) * | 2019-11-20 | 2020-04-07 | 珠海格力电器股份有限公司 | Multimode antenna, terminal, communication method and device of multimode antenna and processor |
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