CN205488559U - Parasitic cell -phone antenna of mainboard - Google Patents
Parasitic cell -phone antenna of mainboard Download PDFInfo
- Publication number
- CN205488559U CN205488559U CN201620228306.7U CN201620228306U CN205488559U CN 205488559 U CN205488559 U CN 205488559U CN 201620228306 U CN201620228306 U CN 201620228306U CN 205488559 U CN205488559 U CN 205488559U
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- China
- Prior art keywords
- antenna
- mainboard
- main body
- passive
- passive antenna
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Abstract
The utility model discloses a parasitic cell -phone antenna of mainboard, the last main part antenna projection area that is provided with of mobile phone motherboard, and this main part antenna projection area to be the headroom regional, the parasitic antenna design is provided with the main part antenna in main part antenna projection area 's perpendicular top in this headroom region, adjustment parasitic antenna's position and shape change the resonance of main part antenna. The utility model provides a pair of parasitic cell -phone antenna of mainboard, on designing the mainboard with parasitic antenna, part with the main part antenna, carry out the coupling to the antenna from the vertical space, and the parasitic antenna holding is in the headroom region, because parasitic antenna and main part antenna coupling can produce the resonance of certain frequency, merge the resonance of this resonance with the main part antenna, thereby increase the bandwidth on this resonant frequency of antenna, the problem of it can result in the low frequency bandwidth to narrow down when parasitic element increases the high frequency bandwidth to increase in the conventional planar antenna design is solved.
Description
Technical field
This utility model relates to antenna for mobile phone field, particularly relates to a kind of mainboard parasitism antenna for mobile phone.
Background technology
At present, mobile network starts to send out to LTE (Long Term Evolution, Long Term Evolution) direction from 3G
Exhibition, the most traditional 2G and 3G does not exits use yet, therefore it is required that existing LTE mobile phone can cover 2G/3G/4G simultaneously
Multiple frequency ranges, the corresponding requirement non-constant width of antenna for mobile phone bandwidth, but owing to cell phone mainboard size is limited so that antenna for mobile phone can
Also restrained with space, conventional mobile phone antenna cannot meet adjustment as required and cover different frequency ranges, is especially difficult to reality
Existing low frequency ultra-wide band covers.
In order to enable antenna for mobile phone to cover broader frequency range, in Antenna Design, generally increase parasitic element, with
Increase high frequency bandwidth, its typically by passive antenna and main body Antenna Design in approximately the same plane, such design adds height
The problem that low frequency bandwidth narrows can be caused while bandwidth.Particularly covering 700M(LTE Band12, B17 etc.) ~
960MHz(GSM900, WCDMA Band8) low frequency ultra-wide band time, antenna performance is difficult to reach requirement.
Therefore, prior art has yet to be improved and developed.
Utility model content
For weak point present in above-mentioned technology, this utility model provides a kind of mainboard parasitism antenna for mobile phone, changes
Traditional method for designing, separates design by main body antenna and passive antenna, carries out Space Coupling, makes space availability ratio high, solves
Conventional planar antennas design increases the problem that low frequency bandwidth can be caused to narrow while parasitic element increases high frequency bandwidth.
For achieving the above object, this utility model provides a kind of mainboard parasitism antenna for mobile phone, and cell phone mainboard is provided with master
Body antenna projected area, and this main body antenna projected area is empty regions, passive antenna designs in this empty regions, in main body sky
District of line projection has been positioned vertically above main body antenna, and main body antenna projected area and main body antenna spacing certain distance, described
It is provided with the first earth point and the first main feed point on main body antenna, described passive antenna is provided with the second earth point and the second master
Feed point, described first earth point and the electrical connection of the second earth point, described first main feed point and the electrical connection of the second main feed point, described hands
Mainboard is provided with mainboard earth terminal, and passive antenna electrically connects with mainboard earth terminal；Adjust position and the shape of passive antenna, change
The resonance of main body antenna.
Wherein, described passive antenna is divided into the first passive antenna and the second passive antenna, described second earth point and first
Passive antenna electrically connects, and described second passive antenna electrically connects with mainboard earth terminal.
Wherein, described first passive antenna and the second passive antenna are not in contact with each other, and are all contained in empty regions.
Wherein, no matter how the first passive antenna and the second passive antenna change position and shape, the described first parasitic sky
The position of line and the second passive antenna is all in empty regions.
Wherein, described main body antenna is any with the distance of main body antenna projected area.
The beneficial effects of the utility model are: compared with prior art, a kind of mainboard parasitism hands that this utility model provides
Machine antenna, is designed into passive antenna on cell phone mainboard, separates with main body antenna, couples antenna from vertical space,
And passive antenna is contained in empty regions, the shape changing passive antenna i.e. changes the area of passive antenna, changes parasitic sky
The position of line, i.e. changes the distance of passive antenna and main body antenna, can produce necessarily owing to passive antenna couples with main body antenna
The resonance of frequency, merges the resonance of this resonance with main body antenna, thus increases the bandwidth in this resonant frequency of antenna, often solves
Rule planar antennas designs increases the problem that low frequency bandwidth can be caused to narrow while parasitic element increases high frequency bandwidth.
Accompanying drawing explanation
Fig. 1 is antenna structure view of the present utility model；
Fig. 2 is the schematic diagram of conventional aerial adjustment method；
Fig. 3 is conventional aerial return loss plot；
Fig. 4 is this utility model with conventional aerial under same environment, the return loss plot of a design agents antenna；
Fig. 5 is to add passive antenna on the basis of Fig. 4 on cell phone mainboard, and adjusts passive antenna and couple with main body antenna
After return loss plot.
Main element symbol description is as follows:
1, antenna body 2, cell phone mainboard
11, first earth point the 12, second earth point
21, main body antenna projected area 22, passive antenna
23, second earth point the 24, second main feed point
25, mainboard earth terminal the 221, first passive antenna
222, the second passive antenna 1B, main body antenna
2B, cell phone mainboard 3B, passive antenna
21B, empty regions 22B, earth terminal
211B(212B), earth point 213B, main feed point.
Detailed description of the invention
In order to more clearly state this utility model, below in conjunction with the accompanying drawings this utility model is further described.
Refer to Fig. 1, a kind of mainboard parasitism antenna for mobile phone of the present utility model, cell phone mainboard 2 is provided with main body antenna
Projected area 21, and this main body antenna projected area is empty regions, passive antenna 22 designs in this empty regions 21, in main body sky
District of line projection 21 has been positioned vertically above main body antenna 1, and main body antenna projected area 21 and main body antenna 1 are spaced a spacing
From, and main body antenna 1 is any with the distance of main body antenna projected area 21；The first earth point 11 and it is provided with on main body antenna 1
Main feed point 12, passive antenna 22 is provided with the second earth point 23 and the second main feed point 24, and the first earth point 11 connects with second
Place 23 electrically connects, and the first main feed 12 electrically connects with the second main feed point 24, and cell phone mainboard 2 is provided with mainboard earth terminal 25, parasitic
Antenna 22 electrically connects with mainboard earth terminal 25；Adjust position and the shape of passive antenna 22, change the resonance of main body antenna 1.
Compared with prior art, a kind of mainboard parasitism antenna for mobile phone that this utility model provides, passive antenna is designed into
On cell phone mainboard, separate with main body antenna, from vertical space, antenna is coupled, and passive antenna is contained in empty regions
In, the shape changing passive antenna i.e. changes the area of passive antenna, changes the position of passive antenna, i.e. change passive antenna with
The distance of main body antenna, can produce the resonance of certain frequency, by this resonance and main body owing to passive antenna couples with main body antenna
The resonance of antenna merges, thus increases the bandwidth in this resonant frequency of antenna, solves to increase parasitism in Conventional planar antennas design
Unit can cause the problem that low frequency bandwidth narrows while increasing high frequency bandwidth.
In the present embodiment, passive antenna 22 is divided into the first passive antenna 221 and the second passive antenna 222, the second ground connection
Point 23 electrically connects with the first passive antenna 221, and the second passive antenna 222 electrically connects with cell phone mainboard earth terminal 25.First is parasitic
Antenna 221 is not in contact with each other with the second passive antenna 222, and is all contained in empty regions 21.No matter the first passive antenna 221 He
How second passive antenna 222 changes position and shape, the first passive antenna 221 and the position Jun Chu of the second passive antenna 222
In empty regions 21, by constantly changing the cabling form of passive antenna 22, produce the resonance of certain frequency, by this resonance
Merge with the resonance of main body antenna 1, thus increase the bandwidth in this resonant frequency of antenna.
The antenna adjustment mode of current domestic routine refers to Fig. 2, it is known that, main body antenna 1B and passive antenna 3B is arranged at
In one plane, and on main body antenna 1B and cell phone mainboard 2B, earth point 211B and main feed point 213B electrically connects, passive antenna 3B
Electrically connect with earth point 212B, earth point 211B(212B) it is arranged in empty regions 21B with main feed point 213B, and clearance zone
The lower section of territory 21B connects earth terminal 22B.Adjustment method for the conventional exceedingly high line of domestic the whole network: its frequency range is GSM900/1800
+ CDMA800+TD-A/F+WCDMA-B1/B8+TDD-B38/39/40/41+FDD-B1/B3, corresponding frequency range is (825M-
960M),(1710M-2170M),(2300M-2400M),(2570M-2620M).Typically can be covered by three resonance.By often
Rule cabling can form a double-frequency resonance, covers (825M-960M), (1710M-2170M) frequency range, additionally (2300M-
2400M), (2570M-2620M) the two frequency range typically will lean on passive antenna to produce a resonance realization.It will be seen that this
On individual passive antenna 3B and cell phone mainboard 21B, earth point 212B electrically connects, and its design can take the area of relatively multiagent antenna 1B
And blocked the main body antenna 1B radiation that this side up.Although this passive antenna 1B produces resonance, and high band bandwidth is had tribute
Offer, actually reduce the bandwidth of main body antenna 1B, particularly relatively big, according to this kind to the low frequency bandwidth contributions of main body antenna 1B
Thinking is by the return loss plot of antenna adjustment to optimum state as shown in Figure 3.
Now according to thinking of the present utility model, first debug (825M-960M) in main body antenna 1 region as shown in Figure 1,
(1710M-2170M) dual-band antenna, the return loss plot debugged as shown in Figure 4, owing to the environment such as area can ratio shown in Fig. 2
Antenna 1B is larger for main body, it can be seen that Fig. 4 can be better in low-frequency range return loss compared with Fig. 3.
On the basis of the above, the cell phone mainboard 2B of this utility model empty regions 21 below main body antenna 1 designs
Passive antenna 22 so that it is produce resonance in (2300M-2620M) frequency range.The effect debugged as shown in Figure 5, comparison diagram
5 and Fig. 3, it can be clearly seen that Fig. 5 can be wider compared with Fig. 3 low-and high-frequency bandwidth, thus realize the purpose that antenna performance optimizes.
Advantage of the present utility model is:
1) passive antenna is designed on cell phone mainboard, separates with main body antenna, from vertical space, antenna is carried out coupling
Closing, than conventional aerial design space utilization rate more more preferably, performance is more excellent；
2) by constantly changing the cabling form of passive antenna, the resonance of certain frequency is produced, by this resonance and main body
The resonance of antenna merges, thus increases the bandwidth in this resonant frequency of antenna；
3) due on cell phone mainboard empty regions space big, shape and the Position Design of passive antenna are more random.
One of above disclosed mode being only this utility model enforcement, does not constitute the restriction to this patent right.As
Really those skilled in the art are inspired by it, in the case of creating objective without departing from this utility model, without creativeness
Design the case study on implementation similar with this programme, belong to protection domain of the present utility model.
Claims (5)
1. a mainboard parasitism antenna for mobile phone, it is characterised in that be provided with main body antenna projected area, and this main body on cell phone mainboard
Antenna projected area is empty regions, and passive antenna designs in this empty regions, and the vertical direction in main body antenna projected area sets
It is equipped with main body antenna, and main body antenna projected area and main body antenna spacing certain distance, described main body antenna is provided with first
Earth point and the first main feed point, described passive antenna is provided with the second earth point and the second main feed point, described first earth point
Electrically connecting with the second earth point, described first main feed point and the electrical connection of the second main feed point, described cell phone mainboard is provided with mainboard ground connection
End, passive antenna electrically connects with mainboard earth terminal；Adjust position and the shape of passive antenna, change the resonance of main body antenna.
A kind of mainboard parasitism antenna for mobile phone the most according to claim 1, it is characterised in that described passive antenna is divided into first
Passive antenna and the second passive antenna, described second earth point and the first passive antenna electrical connection, described second passive antenna with
Mainboard earth terminal electrically connects.
A kind of mainboard parasitism antenna for mobile phone the most according to claim 2, it is characterised in that described first passive antenna and the
Two passive antennas are not in contact with each other, and are all contained in empty regions.
A kind of mainboard parasitism antenna for mobile phone the most according to claim 3, it is characterised in that no matter the first passive antenna and the
How two passive antennas change position and shape, and the position of described first passive antenna and the second passive antenna is all in clearance zone
In territory.
A kind of mainboard parasitism antenna for mobile phone the most according to claim 1, it is characterised in that described main body antenna and main body sky
The distance in district of line projection is any.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620228306.7U CN205488559U (en) | 2016-03-23 | 2016-03-23 | Parasitic cell -phone antenna of mainboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620228306.7U CN205488559U (en) | 2016-03-23 | 2016-03-23 | Parasitic cell -phone antenna of mainboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205488559U true CN205488559U (en) | 2016-08-17 |
Family
ID=56652284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620228306.7U Expired - Fee Related CN205488559U (en) | 2016-03-23 | 2016-03-23 | Parasitic cell -phone antenna of mainboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205488559U (en) |
-
2016
- 2016-03-23 CN CN201620228306.7U patent/CN205488559U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20160817 Termination date: 20190323 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |