CN103682585A - An electronic device containing a planar inverted F antenna with dual parasitic elements - Google Patents
An electronic device containing a planar inverted F antenna with dual parasitic elements Download PDFInfo
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- CN103682585A CN103682585A CN201210361947.6A CN201210361947A CN103682585A CN 103682585 A CN103682585 A CN 103682585A CN 201210361947 A CN201210361947 A CN 201210361947A CN 103682585 A CN103682585 A CN 103682585A
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Abstract
The invention provides an electronic device containing a planar inverted F antenna with dual parasitic elements. The planar inverted F antenna comprises an antenna body, a grounding element, a low-frequency parasitic portion, and a high-frequency parasitic portion. The antenna body comprises a high-frequency radiation portion, a low-frequency radiation portion, and a connection portion. The high-frequency radiation portion and the low-frequency radiation portion are extended along opposite directions. The connection portion comprises a first end, a second end, and a feed-in point. The first end is coupled to a joint of the high-frequency radiation portion and the low-frequency radiation portion. The second end is coupled to the grounding element. The feed-in point is used for receiving a signal input. The grounding element is connected with the second end of the connection portion of the antenna body. The low-frequency parasitic portion is extended from the grounding element and is adjacent to the high-frequency radiation portion of the antenna body. The high-frequency parasitic portion extended from the grounding element is arranged between the antenna body and the low-frequency parasitic portion and is adjacent to the connection portion and the high-frequency radiation portion of the antenna body.
Description
Technical field
The invention relates to a kind of electronic installation, and particularly relevant for a kind of electronic installation with the planar inverted-F antenna of two parasitic antennas.
Background technology
Along with making rapid progress of science and technology, the volume of portable electric device and size are also towards compact future development.When product is pursued lightweight and miniaturization, in order to receive and dispatch the available space of antenna of signal of communication, will inevitably be compressed.Add the restriction of physical condition, the characteristic of antenna is subject to great impact especially.For example, the antenna putting position in general traditional notebook computer is positioned at the top of screen mostly.Yet, at notebook computer, to pursue in compact evolution process, back of the body lid is often used all-metal material coated.Under these circumstances, antenna is just forced to be arranged at the periphery of system end.But due to the effect of metallic shield, antenna be often arranged on pivotal axis between two bodies near, just can when folding, not suffer the shielding of all-metal back of the body lid.But due to many cablings being also set near pivotal axis conventionally, such ornaments mode can not allow antenna away from other elements of system end and the issuable interference of cabling, tend to cause the characteristic of antenna to decline.
Summary of the invention
The invention provides a kind of electronic installation with the planar inverted-F antenna of two parasitic antennas, can receive and dispatch two kinds of radiofrequency signals of low frequency and high frequency, and the isolated interference being produced by other elements of electronic installation.
The invention provides a kind of electronic installation, include a planar inverted-F antenna.Wherein, planar inverted-F antenna comprises antenna body, earth element, low frequency Parasitica and high frequency Parasitica.Antenna body comprises high-frequency radiation part, low frequency radiation portion and connecting portion.Low frequency radiation portion and high-frequency radiation part are extended in the opposite direction.Connecting portion tool first end, the second end and load point, wherein first end is coupled to the junction of high-frequency radiation part and low frequency radiation portion, and the second end is coupled to earth element, and this load point is in order to receive a signal input.Earth element connects the second end of the connecting portion of antenna body.Low frequency Parasitica extends from earth element, the high-frequency radiation part of adjacent antennas body.High frequency Parasitica extends from earth element, between antenna body and low frequency Parasitica, and connecting portion and the high-frequency radiation part of next-door neighbour's antenna body.
In an embodiment of the present invention, the high-frequency radiation part of antenna body and connecting portion produce high frequency mode with planar inverted-F antenna principle jointly, transmitting-receiving high-frequency signal, and high frequency Parasitica is in order to adjust the impedance matching value of high-frequency signal.The low frequency radiation portion of antenna body and connecting portion produce low frequency modal with planar inverted-F antenna principle jointly, transmitting-receiving low frequency signal, and low frequency Parasitica is in order to adjust the impedance matching value of low frequency signal.
In an embodiment of the present invention, high frequency Parasitica and connecting portion and high-frequency radiation part resonance, to increase the bandwidth of high frequency mode.
In an embodiment of the present invention, the centre frequency of high-frequency signal is 5G hertz, and the centre frequency of low frequency signal is 2.4 hertz.
In an embodiment of the present invention, 1/4th of the wavelength length that high frequency Parasitica to the length of earth point is high-frequency signal.Four of the wavelength length that low frequency Parasitica to the length of earth point is low frequency signal/
In an embodiment of the present invention, the spacing of high frequency Parasitica and connecting portion is between 0.3 millimeter to 1.5 millimeters.
In an embodiment of the present invention, the spacing of high frequency Parasitica and high-frequency radiation part is between 0.3 millimeter to 1.5 millimeters.
In an embodiment of the present invention, the spacing of low frequency Parasitica and high-frequency radiation part is between 0.3 millimeter to 1.5 millimeters.And, low frequency Parasitica and high-frequency radiation part resonance.
In an embodiment of the present invention, electronic installation also comprises the first noumenon and one second body.Wherein, the first noumenon is connected with the second body by pivotal axis, is suitable for relative the second body folding.Above-mentioned antenna is arranged on the second body, and contiguous pivotal axis.
In an embodiment of the present invention, the first noumenon of electronic installation and the second body have respectively upper surface and lower surface, and wherein the upper surface of the upper surface of the first noumenon and the second body is metal material.
In an embodiment of the present invention, the first noumenon of electronic installation and the second body have respectively upper surface and lower surface, and wherein the upper surface of the upper surface of the first noumenon and the second body and lower surface are metal material.
Based on above-mentioned, the invention provides a kind of planar inverted-F antenna, can be in order to receive and dispatch the radiofrequency signal of two kinds of frequency bands, and there is respectively the Parasitica corresponding to the radiofrequency signal of two frequency ranges, can completely cut off the interference producing from other elements of electronic installation.
For above-mentioned feature and advantage of the present invention can be become apparent, special embodiment below, and coordinate accompanying drawing to be described in detail below.
Accompanying drawing explanation
Fig. 1 is according to the schematic diagram of electronic installation shown in one embodiment of the invention;
Fig. 2 is according to the structural representation of planar inverted-F antenna shown in one embodiment of the invention;
Fig. 3 A is the graph of a relation of voltage standing wave ratio (Voltage Standing Wave Ratio is called for short VSWR) with the frequency of dual-frequency P IFA antenna;
Fig. 3 B is according to the graph of a relation of the voltage standing wave ratio of planar inverted-F antenna shown in one embodiment of the invention and frequency.
Description of reference numerals:
10: electronic installation;
101: the first noumenon;
102: the second bodies;
103,104: pivotal axis;
110,120: setting position;
20: planar inverted-F antenna;
200: antenna body;
201: low frequency radiation portion;
202: high-frequency radiation part;
203: connecting portion;
2031: first end;
2032: the second ends;
210: earth element;
220: low frequency Parasitica;
230: high frequency Parasitica;
CP1～CP4: current path;
FP: load point;
GP: earth point;
CL: coaxial line;
G1, G2: spacing;
A, B, C, D: surface;
1～10: arrow.
Embodiment
Fig. 1 is according to the schematic diagram of electronic installation shown in one embodiment of the invention.Please refer to Fig. 1, electronic installation 10, for example notebook computer, comprises the first noumenon 101 and the second body 102, wherein the first noumenon 101 is connected with the second body 102 by pivotal axis 103,104, is suitable for relative the second body 102 foldings.The first noumenon 101 has upper surface A and lower surface B, and the second body has upper surface C and lower surface D.
With regard to past prior art, often antenna is arranged on the first noumenon 101.Yet when the upper surface A of the first noumenon 101 and the upper surface C of the second body are metal material, antenna receiving-sending ability will be subject to metallic shield and cannot arrange.If further, as the upper surface A of the first noumenon 101, the upper surface C of the second body and lower surface D are metal material, or even the upper and lower surface A～D of the first noumenon 101 and the second body is while being all metal material, the radiation characteristic of antenna will suffer larger interference.
Therefore, and then be arranged at the position 110 or 120 on the second body 102, wherein position 110 or 120 approaches pivotal axis 103,104 to antenna.In particular, position 110,120, between pivotal axis 103,104, and is close to respectively pivotal axis 103,104.Owing to there being many cabling processes near pivotal axis 103,104, also comparatively approaching apart from each element of electronic installation 10, all can interfere damaging property of antenna.Meanwhile, the transmitting-receiving of antenna also can be subject to the first noumenon 101 with respect to the situation impact of the second body 102 foldings.
In order to make antenna can obtain better antenna performance, in the present invention, utilize two parasitic radiation bodies to form a kind of parallel inverse-F antenna (Planar Inverted F Antenna of distortion, be called for short PIFA), utilize respectively the impedance matching of the kind radiofrequency signal for two kinds of frequency bands of transmitting-receiving of two parasitic radiation structural reforms, and the isolated interference of being transmitted by electronic installation.With next, will coordinate graphic detailed description embodiments of the present invention with embodiment.
Fig. 2 is according to the structural representation of planar inverted-F antenna shown in one embodiment of the invention, and wherein planar inverted-F antenna is suitable for being arranged at the 110Huo position, position 120 in electronic installation 10 as shown in Figure 1.Please refer to Fig. 2, planar inverted-F antenna 20 comprises antenna body 200, an earth element 210, low frequency Parasitica 220 and high frequency Parasitica 230.
Earth element 210 connects the second end 2032 of the connecting portion 203 of antenna body 200, and in other words, the second end 2032 can be considered the earth point GP of antenna body 200.Low frequency Parasitica 220 extends from earth element 210, the high-frequency radiation part 202 of adjacent antennas body 200.High frequency Parasitica 230 extends from earth element 210, between antenna body 200 and low frequency Parasitica 220, and connecting portion 203 and the high-frequency radiation part 202 of next-door neighbour's antenna body 200.
Planar inverted-F antenna 20 utilizes low frequency radiation portion 201 and connecting portion 203, namely originates in the current path CP1 of load point FP, with PIFA Principle of Antenna, produces a low frequency modal, transmitting-receiving one low frequency signal.And low frequency Parasitica 220 is in order to adjust the impedance matching value of low frequency signal.Similar, planar inverted-F antenna 20 also utilizes high-frequency radiation part 202 and connecting portion 203, namely originates in the current path CP2 of load point FP, with PIFA Principle of Antenna, produces a high frequency mode, transmitting-receiving one high-frequency signal.And high frequency Parasitica 230 is in order to adjust the impedance matching value of high-frequency signal.
In the present embodiment, planar inverted-F antenna 10 is connected with coaxial line CL.Coaxial line CL has an inner wire and an outer conductor, and wherein inner wire is connected with the load point FP of antenna body 200, and outer conductor is connected with the earth point GP of antenna body 200.And the high-frequency signal of receiving and dispatching by planar inverted-F antenna 20 or low frequency signal just can transmit by coaxial line CL.
It is worth mentioning that, connecting portion 203 and high-frequency radiation part 202 due to high frequency Parasitica 230 next-door neighbour's antenna bodies 200, high frequency Parasitica 230 can produce resonance with connecting portion 203 and high-frequency radiation part 202, namely produce another mode that approaches high frequency mode centre frequency, can be in order to increase the bandwidth of the high frequency mode being produced by antenna body 200.High frequency Parasitica 230 can be in order to adjust the intensity of coupling with the size of the spacing G2 of high-frequency radiation part 202 with spacing G1 and the high frequency Parasitica 230 of connecting portion 203.For example, in one embodiment of this invention, respectively the size of spacing G1 and spacing G2 is set between 0.3 millimeter to 1.5 millimeters, to obtain enough adjustment effects.
In like manner, if the spacing between low frequency Parasitica 220 and high-frequency radiation part 202 is controlled between 0.3 millimeter to 1.5 millimeters described above of example, can produce new mode with high-frequency radiation part 202 resonance equally.Mode by coupling can also shorten the needed length of high-frequency resonant, and the length of high-frequency radiation part 202 so, shortens the needed length of high-frequency signal resonance, can also further dwindle the size of antenna 20 integral body.Yet above-mentioned content is optionally implemented, the present invention does not limit.
Above-mentioned current path CP1 and the length of CP2 be respectively low frequency signal and high-frequency signal wavelength 1/4th.Same, from the summit of high frequency Parasitica 230 to the distance of the earth point GP of planar inverted-F antenna 20, current path CP3 namely, be set to high-frequency signal wavelength 1/4th.And the summit of low frequency Parasitica 220 is to the distance of the earth point GP of planar inverted-F antenna 20, current path CP4 namely, be also set to low frequency signal wavelength 1/4th.Therefore, impedance matching value when high frequency Parasitica 230 and low frequency Parasitica 220 just can be used for respectively adjusting transmitting-receiving high-frequency signal and low frequency signal, while making to receive and dispatch high-frequency signal or low frequency signal, planar inverted-F antenna 20 can have preferably antenna performance.The shape of low frequency radiation portion 201, high-frequency radiation part 202, low frequency Parasitica 220 and high frequency Parasitica 230 and bending times also can be according to the adjustment of impedance matching and change to some extent, and the present invention is not only defined in the configuration state shown in embodiment illustrated in fig. 1.
In one embodiment of the invention, high-frequency signal and low frequency signal are respectively and meet wireless fidelity (Wireless Fidelity is called for short WiFi) agreement, and centre frequency is respectively the radiofrequency signal of 5G hertz and 2.4G hertz.Yet the present invention is not limited to above-mentioned execution mode, can just adjust according to the signal frequency of wish transmitting-receiving.For example, above-mentioned current path CP1～CP4 adjusts according to the wavelength length of received and dispatched high-frequency signal and low frequency signal, and the present invention is not limited to above-mentioned.
Fig. 3 A is the graph of a relation of voltage standing wave ratio (Voltage Standing Wave Ratio is called for short VSWR) with the frequency of dual-frequency P IFA antenna.Please refer to Fig. 3 A, can see, in the part of low frequency (between arrow 1～3 marked position) and high frequency (between arrow 4～5 marked positions), there is respectively a mode.And Fig. 3 B is according to the graph of a relation of the voltage standing wave ratio of planar inverted-F antenna shown in one embodiment of the invention and frequency.Please refer to Fig. 3 B, as seen from the figure, identical with Fig. 3 A is to have respectively a mode at low frequency (between arrow 6～8 marked positions) and at high frequency (between arrow 9～10 marked positions).And with Fig. 3 A difference be, near the mode of original high frequency, increased the new mode (around arrow 9 marked positions) being produced by the parasitic part of high frequency (the parasitic part 230 of high frequency as shown in Figure 2) newly, and hence one can see that to planar inverted-F antenna in the bandwidth of high frequency just because the new mode producing and broadening.Therefore, having increased the parasitic part of high frequency and the parasitic part of low frequency, adjusted impedance matching and produced after new high frequency mode, even if antenna is arranged at the 110Huo position, position 120 shown in Fig. 1, can also there is preferably antenna performance.
In sum, the invention provides a kind of planar inverted-F antenna with two parasitic antennas, can be respectively in order to adjust the impedance matching value of two kinds of band signals of transmitting-receiving.In addition, connecting portion and the high-frequency radiation part of high frequency parasitic antenna next-door neighbour antenna body, can also produce the bandwidth that new mode increases transmitting-receiving high-frequency signal.Thus, in the situation that do not increase too many extra cost and space, even if antenna is arranged at, disturb more environment, for example, near the pivotal axis of electronic installation or during the surrounding of other high interference elements, still can possess preferably antenna performance.
Finally it should be noted that: each embodiment, only in order to technical scheme of the present invention to be described, is not intended to limit above; Although the present invention is had been described in detail with reference to aforementioned each embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or some or all of technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (10)
1. there is an electronic installation for the planar inverted-F antenna of two parasitic antennas, it is characterized in that, include:
One planar inverted-F antenna, comprising:
One antenna body, comprising:
One high-frequency radiation part;
One low frequency radiation portion, extends in the opposite direction with this high-frequency radiation part;
A junction, tool one first end, one second end and a load point, wherein this first end is coupled to the junction of this high-frequency radiation part and this low frequency radiation portion, and this second end is coupled to this earth element, and this load point is in order to receive a signal input; And
One earth element, connects this second end of this connecting portion of this antenna body;
One low frequency Parasitica, extends from this earth element, this high-frequency radiation part of contiguous this antenna body; And
One high frequency Parasitica, extends from this earth element, between this antenna body and this low frequency Parasitica, is close to this connecting portion and this high-frequency radiation part of this antenna body.
2. electronic installation according to claim 1, is characterized in that:
This high-frequency radiation part of this antenna body and this connecting portion produce a high frequency mode with planar inverted-F antenna principle jointly, transmitting-receiving one high-frequency signal, and this high frequency Parasitica is in order to adjust the impedance matching value of this high-frequency signal; And
This low frequency radiation portion and this connecting portion of this antenna body produce a low frequency modal with planar inverted-F antenna principle jointly, transmitting-receiving one low frequency signal, and this low frequency Parasitica is in order to adjust the impedance matching value of this low frequency signal.
3. electronic installation according to claim 2, is characterized in that:
This high frequency Parasitica and this connecting portion and this high-frequency radiation part resonance, to increase the bandwidth of this high frequency mode.
4. electronic installation according to claim 2, is characterized in that:
/ 4th of a wavelength length that this high frequency Parasitica to the length of this earth point is this high-frequency signal; And
/ 4th of a wavelength length that this low frequency Parasitica to the length of this earth point is this low frequency signal.
5. electronic installation according to claim 1, is characterized in that:
The spacing of this high frequency Parasitica and this connecting portion is between 0.3 millimeter to 1.5 millimeters.
6. electronic installation according to claim 1, is characterized in that:
The spacing of this high frequency Parasitica and this high-frequency radiation part is between 0.3 millimeter to 1.5 millimeters.
7. electronic installation according to claim 1, is characterized in that:
The spacing of this low frequency Parasitica and this high-frequency radiation part is between 0.3 millimeter to 1.5 millimeters; And
This low frequency Parasitica and this high-frequency radiation part resonance.
8. electronic installation according to claim 1, is characterized in that:
This electronic installation comprises a first noumenon and one second body, and wherein this first noumenon is connected with this second body by a pivotal axis, is suitable for this second body folding relatively; And
Described antenna is arranged on this second body, and contiguous this pivotal axis.
9. electronic installation according to claim 8, is characterized in that:
This first noumenon of this electronic installation and this second body have respectively a upper surface and a lower surface, and wherein this upper surface of this first noumenon and this upper surface of this second body are metal material.
10. electronic installation according to claim 8, is characterized in that:
This first noumenon of this electronic installation and this second body have respectively a upper surface and a lower surface, and wherein this upper surface of this first noumenon and this upper surface of this second body and this lower surface are metal material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210361947.6A CN103682585B (en) | 2012-09-24 | 2012-09-24 | There is the electronic installation of the planar inverted-F antenna of double parasitic antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210361947.6A CN103682585B (en) | 2012-09-24 | 2012-09-24 | There is the electronic installation of the planar inverted-F antenna of double parasitic antenna |
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| CN103682585A true CN103682585A (en) | 2014-03-26 |
| CN103682585B CN103682585B (en) | 2016-09-07 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106058461A (en) * | 2016-07-22 | 2016-10-26 | 常熟市泓博通讯技术股份有限公司 | Electronic device with antenna |
| TWI559615B (en) * | 2015-01-28 | 2016-11-21 | 亞旭電腦股份有限公司 | Multi-band antenna |
| TWI648906B (en) * | 2017-05-04 | 2019-01-21 | 啓碁科技股份有限公司 | Mobile device and antenna structure |
| US10224599B2 (en) | 2016-03-31 | 2019-03-05 | Molex, Llc | WIFI antenna device |
| CN110571507A (en) * | 2018-06-05 | 2019-12-13 | 宏碁股份有限公司 | mobile device and antenna structure thereof |
| CN111213284A (en) * | 2017-10-12 | 2020-05-29 | 泰连公司 | Antenna device |
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| TWI559615B (en) * | 2015-01-28 | 2016-11-21 | 亞旭電腦股份有限公司 | Multi-band antenna |
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| CN110571507A (en) * | 2018-06-05 | 2019-12-13 | 宏碁股份有限公司 | mobile device and antenna structure thereof |
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| CN103682585B (en) | 2016-09-07 |
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