CN104733835A - PIFA antenna and electronic device - Google Patents
PIFA antenna and electronic device Download PDFInfo
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- CN104733835A CN104733835A CN201310705822.5A CN201310705822A CN104733835A CN 104733835 A CN104733835 A CN 104733835A CN 201310705822 A CN201310705822 A CN 201310705822A CN 104733835 A CN104733835 A CN 104733835A
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- antenna
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- antenna grounding
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Abstract
The invention discloses a PIFA antenna and an electronic device. The PIFA antenna comprises antenna grounding parts and an antenna radiation part hung above the antenna grounding parts. The antenna grounding parts include the first antenna grounding part and the second antenna grounding part. The antenna radiation part is connected with the second antenna grounding part. A seam exists between the first antenna grounding part and the second antenna grounding part and overlaps at least part of the antenna radiation part. In other words, at least one clearance area exists below the antenna radiation part of the PIFA antenna, and therefore the radiation efficiency of the PIFA antenna can be improved, and the performance of the electronic device with the PIFA antenna is improved; meanwhile, a low SAR value can be obtained, and the satisfaction degree of user experience can be further improved.
Description
Technical field
The present invention relates to the communications field, be specifically related to a kind of PIFA antenna and electronic equipment.
Background technology
Various electronic communication terminals owning amount is increasing now, on the one hand everybody pay close attention to electronic communication terminals performance, require that its signal is good; Pay close attention to the impact of the Radiation On Human body that electronic communication terminals produces on the other hand, so adopt suitable design, at radiation efficiency and SAR(electromagnetic wave absorption rate or specific absorption rate) between compromise meet the technical specification of some worlds, become the trend of electronic communication terminals Antenna Design.PIFA antenna is a kind of antenna be widely used on various electronic communication terminals, shown in Figure 1, existing OIFA antenna comprises antenna grounding portion 11 and the aerial radiation portion 12 arranged and above antenna grounding portion, below due to aerial radiation portion 12 is antenna grounding portion 11, do not form headroom district, therefore it has lower SAR, but also reduces its radiation efficiency simultaneously, have impact on the performance of electronic communication terminals largely, reduce the satisfaction of Consumer's Experience.
Summary of the invention
The main technical problem to be solved in the present invention is, provides a kind of PIFA antenna and electronic equipment, affects the problem of electronic communication terminals performance for solving the low shadow of existing PIFA antenna radiation efficiency.
In order to solve the problem, the invention provides a kind of PIFA antenna, comprise antenna grounding portion and be suspended in the aerial radiation portion above described antenna grounding portion, described antenna grounding portion comprises the first antenna grounding portion and the second antenna grounding portion; Gap is provided with between described first antenna grounding portion and described second antenna grounding portion; Described aerial radiation portion is connected with described second antenna grounding portion, and described gap has overlapping at least partially with described aerial radiation portion in vertical direction.
In an embodiment of the present invention, described first antenna grounding portion is also provided with at least one connector, described first antenna grounding portion is connected with described second antenna grounding portion by connector described at least one.
In an embodiment of the present invention, described first antenna grounding portion and described second antenna grounding portion completely isolated by described gap.
In an embodiment of the present invention, described first antenna grounding portion has overlapping at least partially with described aerial radiation portion in vertical direction.
In an embodiment of the present invention, described gap is completely not overlapping with described aerial radiation portion in vertical direction.
In an embodiment of the present invention, described first antenna grounding portion is provided with a connector, and described connector is arranged at the end of described first antenna grounding portion or the middle part of described first antenna grounding portion.
In an embodiment of the present invention, the peripheral shape in described gap is circular, oval or polygon.
In an embodiment of the present invention, described aerial radiation portion comprises the antenna radiation unit be connected with described second antenna grounding portion; Described antenna radiation unit is G type antenna radiation unit or inverted F shaped antenna radiating element.
In an embodiment of the present invention, described aerial radiation portion also comprises the high-frequency parasitic unit be connected with described second antenna grounding portion.
In order to solve the problem, present invention also offers a kind of electronic equipment, described electronic equipment comprises Department of Communication Force and PIFA antenna as above; Described Department of Communication Force is connected with described PIFA antenna.
The invention has the beneficial effects as follows:
PIFA antenna provided by the invention comprises antenna grounding portion and is suspended in the aerial radiation portion above antenna grounding portion, and antenna grounding portion comprises the first antenna grounding portion and the second antenna grounding portion; Aerial radiation portion is connected with the second antenna grounding portion, is provided with gap between the first antenna grounding portion and the second antenna grounding portion, and this gap has overlapping at least partially in vertical direction with aerial radiation portion; There is empty regions at least partially below the aerial radiation portion of also i.e. PIFA antenna provided by the invention, therefore can improve the radiation efficiency of PIFA antenna, and then promote the performance with the electronic equipment of this antenna; A lower SAR value can be obtained again simultaneously, the satisfaction of Consumer's Experience can be promoted further.
Accompanying drawing explanation
Fig. 1 is existing a kind of PIFA antenna structure view;
The PIFA antenna structure view one of Fig. 2 for providing in the embodiment of the present invention two;
The PIFA antenna structure view two of Fig. 3 for providing in the embodiment of the present invention two;
The PIFA antenna structure view three of Fig. 4 for providing in the embodiment of the present invention two.
Embodiment
The present invention, by reserved headroom district at least partially, the below in the aerial radiation portion of PIFA antenna, with while acquisition lower SAR value, promotes the radiation efficiency of PIFA antenna, and then promotes the performance with the electronic equipment of this PIFA antenna.By reference to the accompanying drawings the present invention is described in further detail below by embodiment.
Embodiment one:
The PIFA antenna that the present embodiment provides can be applicable to variously have in the electronic equipment of Department of Communication Force, and this Department of Communication Force is connected with PIFA antenna and realizes communicating.The antenna that the present embodiment provides comprises antenna grounding portion and is suspended in the aerial radiation portion above antenna grounding portion, and antenna grounding portion comprises the first antenna grounding portion and the second antenna grounding portion; Aerial radiation portion is connected with the second antenna grounding portion, concrete, and the second antenna grounding portion is provided with feedback point and earth point, and aerial radiation portion connects with corresponding feedback point and earth point by wire.Gap is provided with between first antenna grounding portion and the second antenna grounding portion, this gap has overlapping at least partially in vertical direction with aerial radiation portion, have to make the below in aerial radiation portion and form headroom district at least partially, and then promote the radiation efficiency of PIFA antenna, a lower SAR value can be obtained simultaneously.Therefore, the PIFA antenna that the present embodiment provides can take into account radiation efficiency and SAR value simultaneously, and radiation efficiency and SAR value are compromised, to meet the demand of various application scenarios better.
In the present embodiment, according to the actual requirements, completely isolated by the gap between second between the first antenna grounding portion of antenna grounding portion and the second antenna grounding portion; Shape, width, length etc. now by adjusting this gap adjust radiation efficiency and the SAR value of antenna.Should be understood that, also can not exclusively isolate between the first antenna grounding portion of antenna grounding portion and the second antenna grounding portion; Now can arrange at least one connector in the first antenna interconnecting piece, the first antenna grounding portion is connected with the second antenna grounding portion by least one connector.Except the radiation efficiency now adjusting antenna except the shape by adjusting gap therebetween, width, length etc. and SAR value, also optimize the bandwidth of antenna by adjusting the shape of connector, size and the position (being also earthing position) that is connected with the second antenna grounding portion.In the present embodiment, connector is specifically arranged number, shape, size and earthing position all can be arranged according to concrete application scenarios flexibly.Such as, the first antenna grounding portion is provided with a connector, and this connector is arranged at the end of the first antenna grounding portion or the middle part of the first antenna grounding portion.
In addition, in the present embodiment, in order to avoid SAR value is excessive, the gap that also can arrange further between the first antenna grounding portion with the second antenna grounding portion is completely not overlapping with aerial radiation portion in vertical direction.Certainly, according to actual needs, the gap that also can arrange between the first antenna grounding portion with the second antenna grounding portion is completely overlapping with aerial radiation portion in vertical direction, and through experimental test, the SAR value of this setup PIFA antenna is also less than the SAR value of Monopole.In the present embodiment, the first antenna grounding portion also can be used as reflecting plate use.
In the present embodiment, the peripheral shape in the gap between the first antenna grounding portion and the second antenna grounding portion can be arranged as required, such as, can be set to circle, ellipse or polygon, and polygon specifically can be triangle, rectangle, trapezoidal, prismatic etc.
Aerial radiation portion in the present embodiment comprises the antenna radiation unit be connected with the second antenna grounding portion; Antenna radiation unit is specially G type antenna radiation unit or inverted F shaped antenna radiating element.When the frequency range higher to PIFA antenna requirement, aerial radiation portion also can comprise the high-frequency parasitic unit be connected with the second antenna grounding portion, to obtain higher frequency range.
Embodiment two:
For a better understanding of the present invention, be that the present invention is described further for example below in conjunction with several concrete PIFA antenna.
Shown in Figure 2, PIFA antenna shown in this figure comprises first day line grounding parts 21, second antenna grounding portion 22 and gap 23, first antenna grounding portion 21 between the first antenna grounding portion 21 and the second antenna grounding portion 22 and completely isolated by gap 23 between the second antenna grounding portion 22; It comprises G type antenna radiation unit also to comprise aerial radiation portion 24(, certainly also can be reversed F-typed), aerial radiation portion 24 is connected with the feedback point on the second antenna grounding portion 22 and earth point; Overlapping at least partially in vertical direction with aerial radiation portion 24 of gap 23; First antenna grounding portion 21 can be used as reflecting plate; Radiation efficiency and the SAR value of PIFA antenna can be adjusted by the width, length, shape etc. adjusting gap 23, obtain the optimal value of the two.
Shown in Figure 3, PIFA antenna shown in this figure is comprised first day line grounding parts 31, second antenna grounding portion 32 and gap 33, first antenna grounding portion 31 between the first antenna grounding portion 31 and the second antenna grounding portion 32 and is connected by connector 35 between the second antenna grounding portion 32; It comprises G type antenna radiation unit also to comprise aerial radiation portion 34(, certainly also can be reversed F-typed), aerial radiation portion 34 is connected with the feedback point on the second antenna grounding portion 32 and earth point; Overlapping at least partially in vertical direction with aerial radiation portion 34 of gap 33; First antenna grounding portion 31 can be used as reflecting plate; Radiation efficiency and the SAR value of PIFA antenna can be adjusted by the width, length, shape etc. adjusting gap 33, obtain the optimal value of the two; Also the bandwidth of antenna is optimized in the size of adjustable connector 35, shape and the position (also i.e. earthing position) that is connected with the second antenna grounding portion.
Shown in Figure 4, PIFA antenna shown in this figure is comprised first day line grounding parts 41, second antenna grounding portion 42 and gap 43, first antenna grounding portion 41 between the first antenna grounding portion 41 and the second antenna grounding portion 42 and is connected by connector 45 between the second antenna grounding portion 42; Also comprise aerial radiation portion, the antenna radiation unit 441 in aerial radiation portion is connected with the feedback point on the second antenna grounding portion 42 and earth point; The high-frequency parasitic unit 442 in aerial radiation portion is also connected with the second antenna grounding portion 42.Overlapping at least partially in vertical direction with aerial radiation portion of gap 43; First antenna grounding portion 41 can be used as reflecting plate; Radiation efficiency and the SAR value of PIFA antenna can be adjusted by the width, length, shape etc. adjusting gap 43, obtain the optimal value of the two; Also the bandwidth of antenna is optimized in the size of adjustable connector 45, shape and the position (also i.e. earthing position) that is connected with the second antenna grounding portion.
Visible, PIFA antenna provided by the invention is provided with gap between the first antenna grounding portion and the second antenna grounding portion, and this gap has overlapping at least partially in vertical direction with aerial radiation portion; Also be have empty regions at least partially below aerial radiation portion, therefore can improve the radiation efficiency of PIFA antenna, and then promote the performance with the electronic equipment of this antenna; A lower SAR value can be obtained again simultaneously, the satisfaction of Consumer's Experience can be promoted further.
Above content is in conjunction with concrete execution mode further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. a PIFA antenna, is characterized in that, comprise antenna grounding portion and be suspended in the aerial radiation portion above described antenna grounding portion, described antenna grounding portion comprises the first antenna grounding portion and the second antenna grounding portion; Gap is provided with between described first antenna grounding portion and described second antenna grounding portion; Described aerial radiation portion is connected with described second antenna grounding portion, and described gap has overlapping at least partially with described aerial radiation portion in vertical direction.
2. PIFA antenna as claimed in claim 1, is characterized in that, described first antenna grounding portion is also provided with at least one connector, and described first antenna grounding portion is connected with described second antenna grounding portion by connector described at least one.
3. PIFA antenna as claimed in claim 1, is characterized in that, described first antenna grounding portion and described second antenna grounding portion completely isolated by described gap.
4. PIFA antenna as claimed in claim 1, it is characterized in that, described first antenna grounding portion has overlapping at least partially with described aerial radiation portion in vertical direction.
5. PIFA antenna as claimed in claim 1, is characterized in that, described gap is completely not overlapping with described aerial radiation portion in vertical direction.
6. PIFA antenna as claimed in claim 2, it is characterized in that, described first antenna grounding portion is provided with a connector, and described connector is arranged at the end of described first antenna grounding portion or the middle part of described first antenna grounding portion.
7. the PIFA antenna as described in any one of claim 1-6, is characterized in that, the peripheral shape in described gap is circular, oval or polygon.
8. the PIFA antenna as described in any one of claim 1-6, is characterized in that, described aerial radiation portion comprises the antenna radiation unit be connected with described second antenna grounding portion; Described antenna radiation unit is G type antenna radiation unit or inverted F shaped antenna radiating element.
9. PIFA antenna as claimed in claim 8, it is characterized in that, described aerial radiation portion also comprises the high-frequency parasitic unit be connected with described second antenna grounding portion.
10. an electronic equipment, is characterized in that, described electronic equipment comprises Department of Communication Force and the PIFA antenna as described in any one of claim 1-9; Described Department of Communication Force is connected with described PIFA antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310705822.5A CN104733835A (en) | 2013-12-19 | 2013-12-19 | PIFA antenna and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310705822.5A CN104733835A (en) | 2013-12-19 | 2013-12-19 | PIFA antenna and electronic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104733835A true CN104733835A (en) | 2015-06-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310705822.5A Pending CN104733835A (en) | 2013-12-19 | 2013-12-19 | PIFA antenna and electronic device |
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| CN (1) | CN104733835A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106549222A (en) * | 2015-09-23 | 2017-03-29 | 中兴通讯股份有限公司 | Printed circuit board (PCB) and user equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030146878A1 (en) * | 2002-02-01 | 2003-08-07 | Jyrki Mikkola | Planar antenna |
| WO2005109567A1 (en) * | 2004-04-29 | 2005-11-17 | Molex Incorporated | Low profile antenna |
| CN101867384A (en) * | 2010-04-12 | 2010-10-20 | 中兴通讯股份有限公司 | Wireless terminal for reducing specific absorption rate peak and realization method thereof |
| CN102106038A (en) * | 2008-07-24 | 2011-06-22 | Nxp股份有限公司 | An antenna arrangement and a radio apparatus including the antenna arrangement |
| CN203039098U (en) * | 2012-12-17 | 2013-07-03 | 上海安费诺永亿通讯电子有限公司 | Planar inverted-F antenna system |
-
2013
- 2013-12-19 CN CN201310705822.5A patent/CN104733835A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030146878A1 (en) * | 2002-02-01 | 2003-08-07 | Jyrki Mikkola | Planar antenna |
| WO2005109567A1 (en) * | 2004-04-29 | 2005-11-17 | Molex Incorporated | Low profile antenna |
| CN102106038A (en) * | 2008-07-24 | 2011-06-22 | Nxp股份有限公司 | An antenna arrangement and a radio apparatus including the antenna arrangement |
| CN101867384A (en) * | 2010-04-12 | 2010-10-20 | 中兴通讯股份有限公司 | Wireless terminal for reducing specific absorption rate peak and realization method thereof |
| CN203039098U (en) * | 2012-12-17 | 2013-07-03 | 上海安费诺永亿通讯电子有限公司 | Planar inverted-F antenna system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106549222A (en) * | 2015-09-23 | 2017-03-29 | 中兴通讯股份有限公司 | Printed circuit board (PCB) and user equipment |
| WO2017050301A1 (en) * | 2015-09-23 | 2017-03-30 | 中兴通讯股份有限公司 | Printed circuit board and user equipment |
| CN106549222B (en) * | 2015-09-23 | 2020-03-17 | 中兴通讯股份有限公司 | Printed circuit board and user equipment |
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Application publication date: 20150624 |
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