CN207677088U - The Supra-aural receiver product of this antenna of zero volume omni-directional printed antenna and application - Google Patents
The Supra-aural receiver product of this antenna of zero volume omni-directional printed antenna and application Download PDFInfo
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- CN207677088U CN207677088U CN201721866291.8U CN201721866291U CN207677088U CN 207677088 U CN207677088 U CN 207677088U CN 201721866291 U CN201721866291 U CN 201721866291U CN 207677088 U CN207677088 U CN 207677088U
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Abstract
The utility model provides a kind of zero volume omni-directional printed antenna, including antenna on the plate in printed circuit board surface is arranged and the metalized antenna in the surface edges of boards of printed circuit board is arranged, one end of the metalized antenna is connected with the end of antenna on plate.The total length of the metalized antenna and antenna on plate meets quarter-wave monopole printed antenna requirement.Compared with the existing technology, the antenna of the utility model has the advantage that：It is used to the thickness of printed circuit board, the caliper portion of printed circuit board is made to become antenna, antenna is not limited by printed circuit board space；Not only it had been not take up plate upper volume, but also has avoided blocking for battery, while the beamwidth of antenna of this structure is wider, has also been more easy to match, the radiation efficiency of antenna has been improved, improves communication distance.
Description
Technical field
The utility model belongs to printed antenna technical field, more particularly, to a kind of zero volume omni-directional printed antenna.
Background technology
In wireless product, antenna is essential application device, is generally arranged at and has mobile communication function just
The formula terminal antenna of taking can be divided into greatly two kinds of external antenna and built-in antenna.External antenna includes mainly whip type antenna, spiral shell
Rotation type antenna etc. is fixed at the side or top of portable terminal.These external antennas are arranged in portable terminal
Outside, therefore exist using and keeping aspect inconvenience, have the shortcomings that influence portable terminal appearance.Also,
The outside need of portable terminal ensures the space for external antenna to be arranged, and the appearance that there is portable terminal as a result, is set
Meter is restricted, damages design, makes the miniaturization for being difficult to realize portable terminal and lightening disadvantage.In order to make up institute as above
The shortcomings that external antenna stated, recently, the built-in aerial master that antenna is arranged inside portable terminal, are to be used.As
Built-in aerial mainly uses unipole antenna, loop aerial or planar inverted-F antenna, is arranged in the inside of portable terminal, because
This, needs have the space that built-in antenna can be arranged in the inside of portable terminal, but portable terminal increasingly minimizes
Or it is lightening, the installation space of built-in antenna also becomes smaller.
The ceramic antenna occurred in recent years is a kind of miniature antenna.When with ceramic antenna, it is also noted that Babylon circuit
Matching problem can also influence the effect of antenna if matched bad；And ceramic antenna is used, cost can also improve；Pottery
Porcelain antenna is mainly used for 2.4GHz frequency ranges, and using effect is also undesirable in 400MHz~900MHz frequency ranges；When pursuing standby
Between and in the case of lithium battery size can not be reduced, still will produce battery and block antenna case.
Ear-hang class wireless product has many advantages, such as small, easy to carry, deep to be liked by market, while also requiring
Ear-hang class wireless product more minimize and have the function of it is abundanter, this allow for the design size of printed circuit board by
To corresponding limitation.Although the rise of ceramic antenna in recent years alleviates this phenomenon, ceramic antenna is of high cost, narrow bandwidth and
More is applied to WiFi and Bluetooth band, the interior good solution not yet of UHF (hyperfrequency) frequency range.
To reduce cost, reducing printed circuit plate bulk, while ensureing the performance of wireless signal transmission, it is necessary to which design makes
Use printed antenna.At present applied to the printed antenna in product design, designed with printed monopole antenna based on, occupy PCB surface product
Greatly；It is limited to current lithium battery technology, lithium battery can not minimize, and in RF application, and lithium battery is equivalent to one piece
Metal, lithium battery is unavoidable to shelter from a part of printed antenna, and metal structure makes antenna be difficult to radiate, and efficiency drops significantly
It is low.
Invention content
In view of this, the utility model is directed to a kind of zero volume omni-directional printed antenna and the ear-hang using this antenna
Formula receiver product is blocked with solving the problem of that the volume of printed antenna is limited by lithium battery.
In order to achieve the above objectives, the technical solution of the utility model is realized in：
A kind of zero volume omni-directional printed antenna, including antenna and setting on the plate in printed circuit board surface are set and existed
The metalized antenna of the surface edges of boards of printed circuit board, the end phase of one end of the metalized antenna and antenna on plate
Even.
Preferably, the total length of the metalized antenna and antenna on plate meets quarter-wave monopole printed antenna and wants
It asks.
A kind of Supra-aural receiver product, including printed circuit board and lithium battery, the printed circuit board are equipped with as above
The zero volume omni-directional printed antenna.
Compared with the existing technology, the antenna of the utility model and Supra-aural receiver product have the advantage that：
(1) be used to the thickness of printed circuit board, the caliper portion of printed circuit board made to become antenna, antenna not by
The limitation of printed circuit board space；Not only it had been not take up plate upper volume, but also has avoided blocking for battery, while the aerial band of this structure
Width is wider, is also more easy to match, and improves the radiation efficiency of antenna, improves communication distance.
(2) it is designed as quarter-wave monopole printed antenna, radiation has omni-directional.
Description of the drawings
The attached drawing for constituting the part of the utility model is used to provide a further understanding of the present invention, this practicality is new
The illustrative embodiments and their description of type are not constituted improper limits to the present invention for explaining the utility model.
In attached drawing：
Fig. 1 is the structural schematic diagram of the utility model embodiment printed circuit board；
Fig. 2 is the structural schematic diagram of the utility model embodiment printed circuit board combination lithium battery；
Fig. 3 is the standing-wave ratio of printed antenna on traditional plate；
Fig. 4 is the standing-wave ratio of the printed antenna of the present embodiment.
Reference sign：
1- printed circuit boards, 2- metalized antennas, 3- lithium batteries, 4- antenna-paths.
Specific implementation mode
It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can
To be combined with each other.
The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
A kind of zero volume omni-directional printed antenna of the present embodiment, including the plate being arranged on 1 surface of printed circuit board go up to the sky
Line goes up to the sky with the metalized antenna 2 in the surface edges of boards of printed circuit board, one end and the plate of the metalized antenna 2 is arranged
The end of line is connected.
In the development of the low power radio devices of 400MHz~900MHz applications, it is contemplated that easy to manufacture and low cost
The factor of demand, one of the important component as radio frequency link, quarter-wave is realized on same printed circuit board 1
Unipole antenna be a good solution.One quarter-wave printed monopole antenna is readily devised, and is passed through
Antenna tuning can be simply done by slightly changing the length of antenna.
Quarter-wave monopole is a kind of ground associated antenna, it is necessary to single-ended transmission.Antenna must be complete there are one block
Whole ground, the ideal floor file size around the distributing point of antenna are preferably equal to or greater than quarter-wave.The size of floor file influences
Gain, resonant frequency and the impedance of antenna.The length of monopole antenna essentially dictates its resonant frequency, but due to a quarter
The ultra-wide band characteristic of wavelength mono-pole sub-antenna, antenna length do not serve conclusive.But with other kinds of antenna one
The gain of sample, quarter-wave monopole antenna can be according to the ruler of parameter (such as external structure material), floor file in environment
The distance between very little, antenna and ground, the width and thickness of printed circuit board and it is different.If any in these parameters
One is changed, and the length of monopole antenna is required for readjusting in order to make antenna obtain optimality in antenna tuning
Energy.
The present embodiment, the equipment applied in 868-870MHz and 902-928MHz wave bands for one, the resonance frequency of antenna
Rate can be tuned between two frequency ranges.Because this antenna has very good gain effect in whole bandwidth, if
By the resonance frequency tunings of antenna to 900MHz, then antenna will be owned by good performance in 868-928MHz.The antenna
Using the 1.6mm FR4 dielectric materials of standard, the electric medium constant in 900MHz is 4.4.
The width of monopole subpath is W=1.5mm.Wavelength in ecotopia is λ 0=333mm.On FR4 media
Wavelength be similar to 0 ≈ 250mm of λ g ≈ 0.75* λ.
In conclusion the length of the quarter-wave monopole printed antenna of the present embodiment should be similar to
L=250/4=62.5mm.
Assuming that floor file size is close to desirable level as described above, and the track of antenna is surrounded by FR4 media.When
When designing this monopole printed antenna on printed circuit board 1, the length of antenna should suitably extend about 20% to make its
900MHz obtains best resonance effect.If floor file size is than ideal much smaller size, as representated by patent of the present invention
Small-sized ear-hang class wireless telecom equipment, the length of antenna should extend 30%.
The present embodiment, the other end of the metalized antenna 2, which extends to, meets antenna length described above.
As shown in Figure 1, due in the printed circuit board below antenna-path 4 each layer do not allow floor file.Floor file, first device
Cabling on part and printed circuit board 1 is all forbidden being placed near antenna-path 4.
The present embodiment as shown in Fig. 2, printed circuit board 1 compact in design, and due in complete machine lithium battery 3 print is completely covered
Printed circuit board 1 makes antenna on plate be difficult to radiate, to there is the idea for making edges of boards metallization that antenna be made.
Modeling and simulating is carried out to the present embodiment printed circuit board 1 using HFSS simulation softwares and (carries printed circuit board lower part
The lithium battery of covering)：
The standing-wave ratio of printed antenna is as shown in figure 3, logical on the plate designed before being calculated under this structure by simulation software
The standing-wave ratio for crossing the edges of boards metallization printed antenna that simulation software calculates this secondary design under this structure is as shown in Figure 4.
This it appears that the quarter-wave monopole print of the present embodiment edges of boards metallization printed antenna from Fig. 3,4
The standing-wave ratio of brush antenna is better, is opened from actual use situation, and so.
The printed circuit board of the present embodiment leads to for when designing transmitter, radiofrequency signal to be modulated by rf chip
It is emitted in space environment by antenna after overmatching circuit, RF switch；When for designing receiver, radiofrequency signal is connect by antenna
It receives, rf chip is entered by RF switch and match circuit and is demodulated.
Above-mentioned antenna applications in Supra-aural receiver product, including printed circuit board 1 and lithium battery 3, edges of boards metallization
Quarter-wave monopole printed antenna then looks for another way, and is not take up area on printed circuit board 1, and not by printed circuit board
Metal in 1 horizontal direction blocks, and the tuning of antenna can be only simply done by adjusting antenna path lengths, unlike ceramics
Antenna also needs to accurately balun circuit matching, collection low cost, easily use and the whole body.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection domain within.
Claims (3)
1. zero volume omni-directional printed antenna, it is characterised in that：Including be arranged on the plate in printed circuit board surface antenna and
Metalized antenna in the surface edges of boards of printed circuit board is set, and on one end of the metalized antenna and plate the end of antenna
End is connected.
2. zero volume omni-directional printed antenna according to claim 1, it is characterised in that：On the metalized antenna and plate
The total length of antenna meets quarter-wave monopole printed antenna requirement.
3. Supra-aural receiver product, including printed circuit board and lithium battery, it is characterised in that：The printed circuit board is equipped with
Zero volume omni-directional printed antenna as described in weighing 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721866291.8U CN207677088U (en) | 2017-12-27 | 2017-12-27 | The Supra-aural receiver product of this antenna of zero volume omni-directional printed antenna and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721866291.8U CN207677088U (en) | 2017-12-27 | 2017-12-27 | The Supra-aural receiver product of this antenna of zero volume omni-directional printed antenna and application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207677088U true CN207677088U (en) | 2018-07-31 |
Family
ID=62971966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721866291.8U Active CN207677088U (en) | 2017-12-27 | 2017-12-27 | The Supra-aural receiver product of this antenna of zero volume omni-directional printed antenna and application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207677088U (en) |
-
2017
- 2017-12-27 CN CN201721866291.8U patent/CN207677088U/en active Active
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