CN205069862U - Printing antenna of falling F suitable for bluetooth communication - Google Patents
Printing antenna of falling F suitable for bluetooth communication Download PDFInfo
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- CN205069862U CN205069862U CN201520798791.7U CN201520798791U CN205069862U CN 205069862 U CN205069862 U CN 205069862U CN 201520798791 U CN201520798791 U CN 201520798791U CN 205069862 U CN205069862 U CN 205069862U
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Abstract
The utility model discloses a printing antenna of falling F suitable for bluetooth communication. This antenna is provided with radiating element, short circuit microstrip piece, distributing point and ground plate, and radiating element is connected respectively to the one end of short circuit microstrip piece and distributing point, and the other end is connected with the ground plate, and the bandwidth covers 2300MHz -2600MHz frequency channel scope, and the center is frequently for 2480MHz, and the peak value is - 38dB, and the relative bandwidth is 12.09%, this antenna can satisfy small, facilitate the use, the clawback loss is little, high characteristics gain.
Description
Technical field
The utility model relates to antenna technical field, particularly relates to a kind of printing inverse-F antenna being applicable to Bluetooth communication.
Background technology
Inverse-F antenna is a kind of distressed structure of monopole antenna, the advantage such as have that volume is little, structure is simply easy to configuration and cost of manufacture is low, therefore, it is widely used in the short-distance wireless communication fields such as Bluetooth, IEEE802.a/b/g, HiperLAN and HomeRF.In addition because the radiation of inverse-F antenna not only comprises horizontal polarized components but also comprise perpendicular polarisation components, so for communication standards such as mainly indoor Bluetooth and WLAN of applied environment, due to indoor wall and the scattering of ornament can cause electric field level to polarize and mutual conversion between perpendicular polarization, i.e. depolarization phenomenon, uses inverse-F antenna effectively can strengthen reception.
Bluetooth is the radiotechnics of a kind of support equipment short haul connection (being generally within 10m), carry out wireless messages exchange between devices, its working frequency range is the free frequency range of global communication of 2.4 ~ 2.483GHz, and extensive use has been in a mobile communication device at present.Antenna is used in Bluetootho Wireless system exporting and reflect the important important component that letter receives electromagnetic wave energy.Current technology there is no method by aerial integration in semiconductor chip, therefore in bluetooth module except the System on Chip/SoC of core, antenna is that another affects the critical components of bluetooth module transmission characteristic.
Inverted F shaped antenna is a kind of antenna grown up last century Mo, have structure simple, lightweight, can conformal, low cost of manufacture, radiation efficiency are high, easily realize the particular advantages such as multiband work, therefore, in recent years, inverted F shaped antenna was widely used research and development.
Contain the metal covering of ground connection in the structure of inverse-F antenna, the susceptibility of grounding metal plane in radio frequency module can be reduced, be therefore very suitable for SOC (system on a chip).In addition, because inverse-F antenna only need utilize metallic conductor to coordinate suitable feeder line to adjust the position of antenna short circuit end to ground plate, thus cost of manufacture is lower, can directly and PCB weld together.
Summary of the invention
The utility model embodiment provides a kind of design being applicable to the printed IFA of Bluetooth communication, and this antenna size is little, and design brief, low cost of manufacture, gain is high, is applicable to the application of Bluetooth system.
Wherein, a kind of printing inverse-F antenna of the Bluetooth of being applicable to communication comprises radiating element, short-circuit micro-band sheet, short-circuit micro-band sheet, distributing point and ground plate; Wherein, radiating element respectively short-circuit micro-band sheet and distributing point is connected, and short-circuit micro-band sheet and distributing point are connected with ground plate respectively; Radiating element, short-circuit micro-band sheet, distributing point and ground plate are metal copper sheet.
Wherein, radiating element entirety is the type of falling π structure, its one end is connected with distributing point, and its part is connected with one end of short-circuit micro-band sheet, and the circuit board mated by distributing point and 50 ohm microstrip and the printing inverse-F antenna that described a kind of Bluetooth of being applicable to communicates is connected.
Wherein, short-circuit micro-band sheet is inverted L shape structure, and be positioned at radiating element left side edge part, its one end is connected with radiating element, and the other end is connected with ground plate.
Wherein, distributing point is rectangular configuration, is connected respectively with described radiating element and ground plate, can directly be connected with 50 ohm microstrip on PCB.
Wherein, ground plate is rectangular configuration, and its side is connected with short-circuit micro-band sheet and distributing point.
Wherein, a kind of entirety of printing inverse-F antenna of the Bluetooth of being applicable to communication is planar structure, and the maximum gain of antenna is 3.5dBi.
Wherein, its bandwidth of printing inverse-F antenna of a kind of Bluetooth of being applicable to communication is 2300MHz-2600MHz, and clawback loss is less than-10dB, and center frequency point is 2480MHz, and peak value is-38dB, bandwidth 300MHz.
Pass through such scheme, the beneficial effects of the utility model are: a kind of printing inverse-F antenna of the Bluetooth of being applicable to communication is provided with radiating element, short-circuit micro-band sheet, distributing point and ground plate, short-circuit micro-band sheet is connected radiating element respectively with one end of distributing point, the other end is connected with ground plate, bandwidth covers 2300MHz-2600MHz band limits, center frequency point is 2480MHz, peak value is-38dB, relative bandwidth is 12.09%, meet Bluetooth to communicate the engineering design requirements of antenna used, the small volume of this antenna, be convenient to integrated and processing, inexpensive, can be applicable in the terminal of Bluetooth band communication.This is applicable to the employing microstrip line form of the printing inverse-F antenna of Bluetooth communication, structural design is the type of falling π structure, its antenna gain greatest irradiation direction is 3.5dBi, it is 60mm that antenna is printed on long, wide is 30mm, and thickness is 1mm, and dielectric constant is on the FR4 plate of 4.3, the interlock circuit components and parts of Bluetooth communication equipment can be welded at the another side of pcb board, avoid the antenna using external Bluetooth to communicate.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.Wherein:
Fig. 1 is a kind of structure chart being applicable to the printing inverse-F antenna of Bluetooth communication of the utility model;
Fig. 2 is a kind of printing inverse-F antenna radiating element portion schematic diagram being applicable to Bluetooth communication of the utility model;
Fig. 3 is a kind of printing inverse-F antenna short-circuit micro-band sheet partial schematic diagram being applicable to Bluetooth communication of the utility model;
Fig. 4 is a kind of clawback damage curve figure being applicable to the printing inverse-F antenna of Bluetooth communication of the utility model;
Fig. 5 is a kind of gain E face figure being applicable to the printing inverse-F antenna of Bluetooth communication of the utility model;
Fig. 6 is this kind of printing inverse-F antenna impedance variation curve chart being applicable to Bluetooth communication.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under performing creative labour prerequisite, all belong to the scope of the utility model protection.
Shown in Figure 1, Fig. 1 is a kind of structure chart being applicable to the printing inverse-F antenna of Bluetooth communication of the utility model, is understood the structural relation of this antenna sections in the present embodiment by this figure.
Shown in Figure 1, the printing inverse-F antenna of a kind of Bluetooth of being applicable to communication that the present embodiment discloses comprises radiating element 1, short-circuit micro-band sheet 2, distributing point 3, ground plate 4, wherein, short-circuit micro-band sheet 2 and distributing point 3 one end respectively be connected radiating element 1 and be connected, the other end is connected with ground plate 4 respectively; Distributing point 3 connects radiating element 1 and ground plate 4, and short-movie sheet metal 2 is positioned at radiating element 1 left side edge part.Radiation list 1 yuan, short-circuit micro-band sheet 2, distributing point 3 and ground plate 4 is sheet metal.In other embodiments, those skilled in the art can also utilize other metal material to replace copper, such as gold.
As shown in Figures 1 and 2, Fig. 2 is a kind of printing inverse-F antenna radiating element portion schematic diagram being applicable to Bluetooth communication of the utility model, wherein, radiating element 1 entirety is the type of falling π structure, this to a certain extent on reduce antenna space shared on pcb board, reduce the size of antenna, its one end is connected with distributing point 3, its part is connected with one end of short-circuit micro-band sheet 2, for convenience of describing, radiating element comprises Part I 11, Part II 12, Part III 13, Part IV 14, Part V 15, Part VI 16, totally 6 parts.
Preferably, the width of radiating element 1 is 1mm, and the length of its Part I 11 is 6mm, the length of Part II 12 is 6mm, the length of Part III 13 is 4mm, the length of Part IV 14 is 4mm, the length of Part V 15 is 4mm, the length of Part VI 16 is 6mm.
As shown in Figures 1 and 3, Fig. 3 is a kind of printing inverse-F antenna short-circuit micro-band sheet partial schematic diagram being applicable to Bluetooth communication of the utility model.Wherein, short-circuit micro-band sheet 2 is inverted L shape structure, and L-type vertical portion is labeled as 21, and L-type transverse part divides and is labeled as 22, totally 2 parts; Short-circuit micro-band sheet 2 is positioned at radiating element 1 left side edge part, and its one end is connected with radiating element 1, and the other end is connected with ground plate 4.
Preferably, the width of short-circuit micro-band sheet 2 is 1mm, and L-type vertical portion 21 length is 7mm, and L-type transverse part divides the length of 22 to be 5mm, and its short-circuit micro-band sheet 2 is 2mm apart from pcb board distance from top, and on the left of distance PCB, distance is 4mm.
Wherein, distributing point is rectangular configuration, is connected respectively with described radiating element and ground plate, can directly be connected with 50 ohm microstrip on PCB.
Preferably, distributing point 3 length and width are 1mm.
Wherein, ground plate is rectangular configuration, and its one end is connected with short-circuit micro-band sheet and distributing point.
Preferably, ground plate 4 length is 50mm, and width is 30mm.
In addition, preferably, it is 60mm that this entire physical is printed on long, and wide is 30mm, and thickness is 1mm, and dielectric constant is on the FR4 plate of 4.3.
As shown in Figure 4, Fig. 4 is a kind of clawback damage curve figure being applicable to the printing inverse-F antenna of Bluetooth communication of the utility model, can show that from figure antenna clawback loss in 2300MHz-2600MHz band limits is less than-10dB, center frequency point is 2480MHz, and peak value is-38dB.The printing inverse-F antenna bandwidth of this kind of Bluetooth of being applicable to communication is 300MHz, and relative bandwidth is 12.09%.Generally only have 6% relative to the relative bandwidth of microstrip antenna, and 1% is only had usually for its relative bandwidth of inverse-F antenna that thin wire is formed, so this beamwidth of antenna is wider, meet the engineering design requirements using antenna.
As shown in Figure 5, Fig. 5 is a kind of gain E face figure being applicable to the printing inverse-F antenna of Bluetooth communication of the utility model, gain on the printing inverse-F antenna greatest irradiation direction of this kind of Bluetooth of being applicable to communication is 3.5dBi, and gain level meets antenna works designing requirement.
As shown in Figure 6, Fig. 6 is this kind of printing inverse-F antenna impedance variation curve chart being applicable to Bluetooth communication, on frequency 2480MHz, the resistance value of antenna is 49.6119+1.0949j, this antenna impedance value is close to 50 ohm, do not need peripheral match circuit to be directly connected with pcb board to a certain extent, the interlock circuit components and parts of Bluetooth communication equipment can be welded at the another side of pcb board, avoid the antenna using external Bluetooth to communicate.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (5)
1. be applicable to a printing inverse-F antenna for Bluetooth communication, it is characterized in that, described in, a kind of printing inverse-F antenna of the Bluetooth of being applicable to communication comprises radiating element, short-circuit micro-band sheet, distributing point and ground plate; Wherein, short-circuit micro-band sheet is connected radiating element with distributing point one end, and the other end is connected with ground plate; Distributing point connects radiating element and ground plate, short-circuit micro-band sheet is positioned at radiating element left side edge part, radiating element, short-circuit micro-band sheet, distributing point and ground plate are metal copper sheet, frequency range is 2300MHz-2600MHz, the center operating frequency of antenna is 2480MHz, and the bandwidth that return loss is less than-10dB is 300MHz; Adopt microstrip line form, structural design is the type of falling π structure, and its antenna gain greatest irradiation direction is 3.5dBi; Being printed on long is 60mm, and wide is 30mm, and thickness is 1mm, and dielectric constant is on the FR4 plate of 4.3, and the another side of pcb board can weld the interlock circuit components and parts of Bluetooth communication equipment, avoids the antenna using external Bluetooth to communicate.
2. a kind of printing inverse-F antenna being applicable to Bluetooth communication according to claim 1, it is characterized in that, described, radiating element entirety is the type of falling π structure, its one end is connected with distributing point upper end, its part is connected with one end of short-circuit micro-band sheet, is connected with 50 ohm microstrip with the circuit board that the printing inverse-F antenna that described a kind of Bluetooth of being applicable to communicates mates by distributing point.
3. a kind of printing inverse-F antenna being applicable to Bluetooth communication according to claim 1, it is characterized in that, described short-circuit micro-band sheet is inverted L shape structure, is positioned at radiating element left side edge part, its one end is connected with radiating element, and the other end is connected with ground plate.
4. a kind of printing inverse-F antenna being applicable to Bluetooth communication according to claim 1, it is characterized in that, described distributing point is rectangular configuration, is connected respectively with described radiating element and ground plate, can directly be connected with 50 ohm microstrip on PCB.
5. a kind of printing inverse-F antenna being applicable to Bluetooth communication according to claim 1, it is characterized in that, described ground plate is rectangular configuration, and its side is connected with short-circuit micro-band sheet and distributing point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520798791.7U CN205069862U (en) | 2015-10-16 | 2015-10-16 | Printing antenna of falling F suitable for bluetooth communication |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520798791.7U CN205069862U (en) | 2015-10-16 | 2015-10-16 | Printing antenna of falling F suitable for bluetooth communication |
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| CN205069862U true CN205069862U (en) | 2016-03-02 |
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| CN201520798791.7U Active CN205069862U (en) | 2015-10-16 | 2015-10-16 | Printing antenna of falling F suitable for bluetooth communication |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105762509A (en) * | 2016-04-07 | 2016-07-13 | 青岛中科移动物联科技有限公司 | 433MHz small PCB antenna |
| CN106602240A (en) * | 2015-10-16 | 2017-04-26 | 深圳洲斯移动物联网技术有限公司 | Printed F-inverted antenna suitable for Bluetooth communication |
-
2015
- 2015-10-16 CN CN201520798791.7U patent/CN205069862U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106602240A (en) * | 2015-10-16 | 2017-04-26 | 深圳洲斯移动物联网技术有限公司 | Printed F-inverted antenna suitable for Bluetooth communication |
| CN105762509A (en) * | 2016-04-07 | 2016-07-13 | 青岛中科移动物联科技有限公司 | 433MHz small PCB antenna |
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