CN203521599U - GPS antenna and mobile phone provided with antenna - Google Patents
GPS antenna and mobile phone provided with antenna Download PDFInfo
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- CN203521599U CN203521599U CN201320374488.5U CN201320374488U CN203521599U CN 203521599 U CN203521599 U CN 203521599U CN 201320374488 U CN201320374488 U CN 201320374488U CN 203521599 U CN203521599 U CN 203521599U
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Abstract
The utility model provides a GPS antenna and a mobile phone provided with the antenna to solve the technical problem that present GPS antennae cannot achieve small size and high antenna performances at the same time. The GPS antenna comprises a dielectric substrate provided with a first surface and a second surface, a first antenna radiating body formed on the first surface of the dielectric substrate, and a second antenna radiating body formed on the second surface. The two ends of the first antenna radiating body are provided with feeding points, the first antenna radiating body is used for receiving signals, the second antenna radiating body is used for being coupled with the first antenna radiating body, one end of the second antenna radiating body is connected with an inductor, and the other end of the second antenna radiating body is connected with a capacitor. According to the utility model, the performance of the GPS antenna is effectively improved, and negative influences, on the antenna performance, caused by an external environment are reduced at the same time.
Description
Technical field
The utility model relates to a kind of antenna, relates in particular to a kind of gps antenna.
Background technology
GPS(global positioning system) equipment positions by receiving satellite signal and navigates, and receive signal, just must use antenna, the basic role of gps antenna is that the energy that comes from satellite is changed into corresponding electric current, and carry out frequency translation through preamplifier, to signal is followed the tracks of, is processed and measures.At present, in electronic receiver on market (such as mobile phone or navigator etc.) with gps antenna be all generally that the antenna easily mounting is placed in device interior, development along with the communications industry, individual mobile terminal equipment is miniaturization and lightening more and more, the space that device interior stays to antenna is more and more less, and along with the reducing of antenna volume, antenna is just more easily subject to the impact of surrounding enviroment, the performance of antenna will variation.
Utility model content
In order to solve existing gps antenna, cannot realize and have less volume and higher antenna performance simultaneously, the utility model provides a kind of gps antenna.
Gps antenna of the present utility model, comprise the medium substrate with first surface and second surface, and be formed on the first antenna radiator on medium substrate first surface and be formed on the second antenna radiator on second surface, the two ends of described the first antenna radiator are provided with distributing point, the first antenna radiator is used for receiving signal, described the second antenna radiator is for being coupled with the first antenna radiator, and described second antenna radiator one end is connected with inductance, and the other end is connected with electric capacity.
The utility model is by two surfaces at medium substrate be arranged in parallel the first antenna radiator and the second antenna radiator, and connect electric capacity and inductance at the two ends of the second antenna radiator, by regulating the size of the length of radiant body and electric capacity, inductance, what make that the first antenna radiator and the second antenna radiator produce separately works near two resonance signals 1575MGz, the line linearity of going forward side by side stack, effectively improve antenna performance, reduced the negative effect of external environment condition to antenna performance simultaneously.Gps antenna of the present utility model, the in the situation that of small volume, still can obtain good antenna performance.
Under preferable case, the dielectric constant of described medium substrate is 1-10.
Under preferable case, the length of described medium substrate is more than or equal to 6mm, and width is more than or equal to 6mm, and thickness is 0.5mm-2mm.
Under preferable case, the length of described the first antenna radiator is 15mm-50mm, and width is 0.2mm-2mm.
Under preferable case, the length of described the second antenna radiator is 4mm-10mm, and width is 0.2mm-3mm.
Under preferable case, the size of described inductance is 1.0nH-10nH.
Under preferable case, the size of described electric capacity is 0.1pF-10pF.
Under preferable case, described the first antenna radiator is " U " type, and described the second antenna radiator is " one " type.
Under preferable case, described the first antenna radiator is " L " type, and described the second antenna radiator is square wave type.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the first antenna radiator of the utility model embodiment 1.
Fig. 2 is the schematic diagram of the second antenna radiator of the utility model embodiment 1.
Fig. 3 is the stereogram of the utility model embodiment 1.
Fig. 4 is the schematic diagram of the first antenna radiator of the utility model embodiment 2.
Fig. 5 is the schematic diagram of the second antenna radiator of the utility model embodiment 2.
Fig. 6 is the stereogram of the utility model embodiment 2.
Fig. 7 be the utility model the first embodiment Smith (Smith) figure.
Fig. 8 is return loss (S11) figure of the utility model the first embodiment.
Fig. 9 is radiation efficiency (Efficiency) figure of the utility model the first embodiment.
Figure 10 is voltage standing wave ratio (VSWR) figure of the utility model the first embodiment.
Embodiment
Clearer for technical problem, technical scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is described in further detail.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
In the utility model, the terms such as unless otherwise clearly defined and limited, term " is connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be to be also electrically connected to; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can understand as the case may be above-mentioned term concrete meaning in the present invention.
The first embodiment of the present utility model, as shown in Figure 1, Figure 2 and Figure 3, gps antenna comprises medium substrate 100, preferable medium substrate is pcb board.Described medium substrate has first surface 101 and second surface 102, on first surface 101, be provided with the first antenna radiator 200, described the first antenna radiator 200 is " U " type, and two ends are provided with distributing point, for being connected with signal processing module, aerial signal is passed to signal processing module.On second surface 102, be provided with the second antenna radiator 300, described the second antenna radiator 300 is " one " font, and one end is connected with electric capacity 400, and the other end is connected with inductance 500.Described the first and second antenna radiators can be copper layer, and described copper layer can adopt the whole bag of tricks of the prior art to be formed on described medium substrate, and as formed the method for Cu metal line on existing pcb board, the utility model is not specifically limited.Can adopt existing SMT(Surface Mount Technology electronic circuit surface installation technique) technique is formed on electric capacity 400 and inductance 500 at the two ends of the second antenna radiator 300, SMT technique is that those of ordinary skills are known, repeats no more herein.
Under preferable case, the dielectric constant of the utility model medium substrate is 3-5, and the length of medium substrate is 8mm-12mm, and width is 8mm-12mm, and thickness is 0.8mm-1mm.The length of the first antenna radiator is 30mm-40mm, and width is 0.5mm-2mm.The length of the second antenna radiator is 6mm-8mm, and width is 0.5mm-2mm.The size of inductance is 1nH-3nH, and the size of electric capacity is 0.3pF-3pF.
In the present embodiment, adopt the medium substrate of 10mm*10mm size, thickness is 0.5mm, and the dielectric constant of described medium substrate is 3.The length of the first antenna radiator 200 is 34mm, and width is 2mm.The length of described the second antenna radiator 300 is 8mm, and width is 2mm.Electric capacity 400 sizes are 0.6p F, and inductance 500 sizes are 1n H.
The second embodiment of the present utility model, as shown in Figure 4, Figure 5 and Figure 6, described the first antenna radiator 200 is " L " type, is arranged on the first surface 101 of medium substrate 100; The second antenna radiator 300 is square-wave form, is arranged on the second surface 102 of medium substrate; Second antenna radiator 300 one end are connected with electric capacity 400, and the other end is connected with inductance 500.In the present embodiment, select the medium substrate of 12mm*12mm size, thickness is 0.5mm, and medium substrate is pcb board, and dielectric constant is 3.The length of the first antenna radiator 200 is 16mm, and width is 2mm.The length of the second antenna radiator 300 is 25mm, and width is 2mm.The size of electric capacity 400 is 0.8pF, and the size of inductance 500 is 1.2nH.
The length of the first antenna radiator 200 described in the utility model is 1/4 λ, λ=c/(f*), wherein c is the light velocity, f is center of antenna frequency (being between 1570MHz and 1580MHz), the dielectric constant that ε is medium substrate; The length of the second antenna radiator 300 can freely be selected.In the utility model, the size of electric capacity 400 and inductance 500 need meet formula f=1/ (2 π), and wherein, f is center of antenna frequency size (being between 1570MHz and 1580MHz), the size that L is inductance value, the size that C is electric capacity.Those skilled in the art are when designing antenna, can select voluntarily according to actual conditions length, the width of the first antenna radiator 200 and the second antenna radiator 300 meeting under above-mentioned condition, the size of the volume of medium substrate 100 and dielectric constant size and inductance and electric capacity, as long as make the operating frequency of gps antenna between 1570MHz and 1580MHz.
Inventor has carried out measure of merit to the gps antenna of the utility model the first embodiment, as shown in Figure 7, in Smith figure of the present utility model, can find out, the input impedance of the first embodiment is 97 Ω, Smith figure is the instrument mating with feeder line for adjusting antenna, normal conditions require the input impedance test value of antenna in 100 Ω, the gps antenna that can find out the present embodiment is easy to mate with feeder line, be that the input impedance of antenna is close with the characteristic impedance of feeder line, reduce the decay of signal.Be return loss plot as shown in Figure 8, normal conditions numerical value is between-∞ to 0dB, and test result is the smaller the better, General Requirements numerical value-below 6dB, test data of the present utility model is-9.3dB as shown in the figure.Fig. 9 is the radiation efficiency figure of antenna in the first embodiment, and general test value, between 0-0.99, requires radiation efficiency more high better, and in the present embodiment, the radiation efficiency of antenna is 0.75 as shown in the figure.Figure 10 is the voltage standing wave ratio resolution chart of the first embodiment antenna, and general test result is between 1 to ∞, and numerical value is the smaller the better, and the voltage standing wave ratio of the present embodiment is 2.4 as shown in the figure.More than test is for the conventionally test of the art to antenna performance, and those of ordinary skills can find out from above-mentioned test result, and gps antenna of the present utility model, the in the situation that of small volume, still has good antenna performance.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within feature of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.
Claims (10)
1. a gps antenna, it is characterized in that, comprise the medium substrate with first surface and second surface, and be formed on the first antenna radiator on medium substrate first surface and be formed on the second antenna radiator on second surface, the two ends of described the first antenna radiator are provided with distributing point, the first antenna radiator is used for receiving signal, described the second antenna radiator is for being coupled with the first antenna radiator, described second antenna radiator one end is connected with inductance, and the other end is connected with electric capacity.
2. gps antenna according to claim 1, is characterized in that, the dielectric constant of described medium substrate is 1-10.
3. gps antenna according to claim 1, is characterized in that, the length of described medium substrate is more than or equal to 6mm, and width is more than or equal to 6mm, and thickness is 0.5mm-2mm.
4. gps antenna according to claim 1, is characterized in that, the length of described the first antenna radiator is 15mm-50mm, and width is 0.2mm-2mm.
5. gps antenna according to claim 1, is characterized in that, the length of described the second antenna radiator is 4mm-10mm, and width is 0.2mm-3mm.
6. gps antenna according to claim 1, is characterized in that, the size of described inductance is 1.0nH-10nH.
7. gps antenna according to claim 1, is characterized in that, the size of described electric capacity is 0.1pF-10pF.
8. gps antenna according to claim 1, is characterized in that, described the first antenna radiator is " U " type, and described the second antenna radiator is " one " type.
9. gps antenna according to claim 1, is characterized in that, described the first antenna radiator is " L " type, and described the second antenna radiator is square wave type.
10. a mobile phone, is characterized in that, described mobile phone comprises the gps antenna as described in any one in claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320374488.5U CN203521599U (en) | 2013-06-27 | 2013-06-27 | GPS antenna and mobile phone provided with antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320374488.5U CN203521599U (en) | 2013-06-27 | 2013-06-27 | GPS antenna and mobile phone provided with antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203521599U true CN203521599U (en) | 2014-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320374488.5U Expired - Lifetime CN203521599U (en) | 2013-06-27 | 2013-06-27 | GPS antenna and mobile phone provided with antenna |
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| Country | Link |
|---|---|
| CN (1) | CN203521599U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110676557A (en) * | 2019-09-23 | 2020-01-10 | Oppo广东移动通信有限公司 | Electronic equipment and preparation method of antenna radiator |
-
2013
- 2013-06-27 CN CN201320374488.5U patent/CN203521599U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110676557A (en) * | 2019-09-23 | 2020-01-10 | Oppo广东移动通信有限公司 | Electronic equipment and preparation method of antenna radiator |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140402 |
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| CX01 | Expiry of patent term |