CN103078174A - Multifrequency antenna device - Google Patents
Multifrequency antenna device Download PDFInfo
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- CN103078174A CN103078174A CN201110327859XA CN201110327859A CN103078174A CN 103078174 A CN103078174 A CN 103078174A CN 201110327859X A CN201110327859X A CN 201110327859XA CN 201110327859 A CN201110327859 A CN 201110327859A CN 103078174 A CN103078174 A CN 103078174A
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Abstract
The invention discloses a multifrequency antenna device. The multifrequency antenna device comprises a first antenna and a second antenna; the first antenna comprises a feed part and a first earthing part; the second antenna and the first antenna are integrated, and the second antenna comprises the feed part and a second earthing part; the feed part is arranged between the first earthing part and the second earthing part, and when transceiving signals, the first and second antennas share the feed part. The two antennas are combined by utilizing one feed point and two earthing parts so as to achieve larger bandwidth and be capable of having good antenna efficiency.
Description
Technical field
The present invention relates to a kind of antenna assembly, and be particularly related to a kind of multi-frequency antenna device.
Background technology
In the life of the information in modern times, the wireless communication apparatus of, cable fine by light requirement not just can signal transmission, immediately obtain information, increases convenience in life.Along with the evolution of technology, various portable wireless communication equipment, such as: intelligent mobile phone, notebook computer, flat computer etc., owing to possess lightly easily characteristic, and become the important information interchange instrument of modern.
In wireless communication apparatus, be used for launching and receiving the antenna that radio wave transmits exchange data signals, also be the important component of the communication apparatus.In the portable wireless communication equipment, not only antenna is compact, do not take the space of organization distribution in the design as far as possible, to cooperate the trend of portable wireless communication equipment volume-diminished, the data of transmitting along with radio data signal in addition increase, and the bandwidth of antenna running time-frequency band also will increase thereupon.
Because the Wireless Data Transmission demand of mobile communication product increases and need to meet the standard of various countries system day by day, so in the support of antenna, need to contain more working band and bandwidth and meet design requirement.
Therefore, a kind of cost consideration that meets, and the antenna that possesses a plurality of working bands and bandwidth remains research and development.
Summary of the invention
Therefore, the object of the present invention is to provide a kind of multi-frequency antenna device, to solve frequency band and the inadequate problem of bandwidth.
A mode of the present invention provides a kind of multi-frequency antenna device, and this multi-frequency antenna device comprises: one first antenna and one second antenna; This first antenna comprises a feeding portion and one first grounding parts; This second antenna and this first aerial integration, and comprise this feeding portion and one second grounding parts; Wherein this feeding portion is disposed between this first grounding parts and this second grounding parts, and this first antenna and this second antenna shared this feeding portion when receiving and transmitting signal.
According to one embodiment of the invention, the first antenna also comprises the first radiant body, the second radiant body.The first radiant body is connected in feeding portion and the first grounding parts, and in order to receive and dispatch the first wireless signal.The second radiant body is connected in feeding portion, and in order to receive and dispatch the second wireless signal.
According to one embodiment of the invention, the first antenna also comprises a slotted eye, at least by the first radiant body and the second radiant body institute around forming, the size of the slotted eye frequency dependence corresponding with the first wireless signal and the second wireless signal wherein.
According to one embodiment of the invention, the second antenna also comprises a radiant body, is connected in feeding portion and the second grounding parts, and in order to receive and dispatch a wireless signal.
According to one embodiment of the invention, the second antenna also comprises a slotted eye, at least by radiant body institute around forming, the size of the slotted eye frequency dependence corresponding with wireless signal wherein.
According to one embodiment of the invention, the spacing of feeding portion and the first grounding parts equals the spacing of feeding portion and the second grounding parts haply.
According to one embodiment of the invention, the first antenna also comprises the first radiant body and the second radiant body, the second antenna also comprises the 3rd radiant body, the first radiant body, the second radiant body and the 3rd radiant body all are connected in feeding portion, in order to receive and dispatch the first high-frequency signal and the second high-frequency signal, the second radiant body is in order to receive and dispatch a low frequency signal respectively for the first radiant body and the 3rd radiant body.
According to one embodiment of the invention, the first antenna also comprises the first slotted eye, at least by the first radiant body and the second radiant body institute around forming, the size of the slotted eye frequency dependence corresponding with the first high-frequency signal and low frequency signal wherein.
According to one embodiment of the invention, the second antenna also comprises one second slotted eye, at least by the 3rd radiant body institute around forming, the size of the second slotted eye frequency dependence corresponding with the second high-frequency signal wherein.
According to one embodiment of the invention, the first antenna is a planar inverted-F antenna, and the second antenna is a loop aerial.
Comprehensively above-mentioned, the present invention utilizes a load point and two grounding parts with two kinds of antenna combinations, produces by interacting between two antennas to add the effect of taking advantage of, and reaches larger bandwidth, and good antenna efficiency can be arranged.
Description of drawings
For above and other purpose of the present invention, feature, advantage and embodiment can be become apparent, appended the description of the drawings is as follows:
Fig. 1 illustrates the schematic diagram according to a kind of multi-frequency antenna device of one embodiment of the invention.
Fig. 2 A illustrates the dorsal view according to an embodiment of multi-frequency antenna device of the present invention.
Fig. 2 B illustrates the front view of the multi-frequency antenna device of Fig. 2 A.
Fig. 3 illustrates voltage standing wave ratio (VSWR) that an embodiment of multi-frequency antenna device tests out corresponding to the schematic diagram of frequency.
Fig. 4 illustrates the schematic diagram according to the match circuit among the embodiment of multi-frequency antenna device of the present invention.
The primary clustering symbol description:
100 multi-frequency antenna devices, 110 first antennas
112 first grounding parts, 114 feeding portions
116 first radiant bodies, 117 second radiant bodies
118 slotted eyes, 119 slotted eyes
120 second antennas, 122 second grounding parts
124 the 3rd radiant bodies, 126 slotted eyes
400 match circuits, 410 radio frequency communication devices
420 inductance, 430 electric capacity
Embodiment
In order to make narration of the present invention more detailed and complete, can be with reference to appended accompanying drawing and the various embodiment of the following stated, identical numbering represents same or analogous assembly in the accompanying drawing.On the other hand, well-known assembly and step are not described among the embodiment, to avoid that the present invention is caused unnecessary restriction.
In order to solve the problem of antenna working band and bandwidth deficiency, utilize a load point and two grounding parts with two kinds of antenna combinations, the first day line architecture comprises low frequency configuration and high-frequency structure, the second day line architecture comprises a high-frequency structure, design by this invention, can be by the feeding portion of antenna and two grounding parts positions and size, optimize the beamwidth of antenna and with the impact of other assemblies coexistences, reach the purpose that promotes antenna performance.
Please refer to Fig. 1, it illustrates the schematic diagram according to a kind of multi-frequency antenna device 100 of one embodiment of the invention.Multi-frequency antenna device 100 comprises the first antenna 110, the second antenna 120.The first antenna 110 comprises the first grounding parts 112 and feeding portion 114.The second antenna 120 and the first antenna 110 are integrated, and comprise feeding portion 114 and the second grounding parts 122.Wherein feeding portion 114 is disposed between the first grounding parts 112 and the second grounding parts 122, and the first antenna 110 and the second antenna 120 shared feeding portion 114 when receiving and transmitting signal.By in conjunction with two kinds of antennas, just can reach the effect that increases bandwidth, and by using identical feeding portion, also not need many burden costs.
In the practical operation, frequency shift (FS) or bandwidth that the distance of each grounding parts and feeding portion can have influence on the multi-frequency antenna device receiving and transmitting signal change, and the design of different antennae structure cooperates with the environment facies of actual antennas, can determine frequency toward high frequency or low frequency skew, and determines the impact on bandwidth.
Then please refer to Fig. 2 A and Fig. 2 B, Fig. 2 A illustrates the dorsal view according to an embodiment of multi-frequency antenna device 100 of the present invention, and Fig. 2 B illustrates the front view of the multi-frequency antenna device 100 of Fig. 2 A.According to one embodiment of the invention, the first antenna 110 also comprises the first radiant body 116, the second radiant body 117.The first radiant body 116 is connected in feeding portion 114 and the first grounding parts 112, and in order to receive and dispatch the first wireless signal.The second radiant body 117 is connected in feeding portion 114, and in order to receive and dispatch the second wireless signal.In the practical operation, the first radiant body 116, the second radiant body 117 can be metal.And the first wireless signal can be corresponding to different frequencies, to reach the effect of multifrequency from the second wireless signal.
According to one embodiment of the invention, the first antenna 110 also comprises slotted eye 118, at least by 117 of the first radiant body 116 and the second radiant bodies around forming, the size of slotted eye 118 frequency dependence corresponding with the first wireless signal and the second wireless signal wherein, therefore, can affect the first wireless signal and the corresponding frequency of the second wireless signal by the size of adjusting slotted eye 118, for example: the degree of depth (degree of depth is the direction vertical with the first radiant body 116) of adjusting slotted eye 118, when when the degree of depth of slotted eye 118 is dark not, the signal correspondence will be toward the high frequency frequency deviation than the Frequency person, if the degree of depth is enough dark, low frequency frequency deviation in the past, or make the antenna arrangement area change when slot pitch (direction of spacing refers to the direction that the first radiant body 116 is parallel with the second radiant body 117) minimizing, just can increase bandwidth.In the practical operation must according to the size in space to the first wireless signal and the second wireless signal influence each other adjust.
It is worth mentioning that in one embodiment, the first antenna 110 also comprises slotted eye 119, at least by 116 of the first radiant bodies around forming, for example: the first radiant body 116 extends to the first grounding parts 112 around slotted eye 119 from feeding portion 114.The frequency dependence that the size of slotted eye 119 is corresponding with the first wireless signal and the second wireless signal, for example: slotted eye 119 is darker, can be so that wider than low frequency person's bandwidth in the first wireless signal and the second wireless signal.In the practical operation, the degree of depth need to the cooperation demand adjust, and if the first antenna 110 be planar inverted-F antenna (PIFA), the control of the degree of depth also must cooperate the basic functional principle of planar inverted-F antenna, comprehensive, the layout area of slotted eye 119 need to be looked the varying environment situation and adjust.
According to one embodiment of the invention, the second antenna 120 also comprises the 3rd radiant body 124, is connected in feeding portion 114 and the second grounding parts 122, and in order to receive and dispatch a wireless signal.
According to one embodiment of the invention, the second antenna also comprises slotted eye 126, at least by 124 of the 3rd radiant bodies around forming, the size of slotted eye 126 frequency dependence corresponding with wireless signal wherein, and can change frequency corresponding to wireless signal and bandwidth by the size of adjusting slotted eye 126, and slotted eye 126 is similar to slotted eye 118 and slotted eye 119, and the mode of adjustment is to aforementioned similar, so do not give unnecessary details at this.
According to one embodiment of the invention, the spacing of feeding portion 114 and the first grounding parts 112 equals the spacing of feeding portion 114 and the second grounding parts 122 haply, for example: spacing is 1mm, for the convenience on designing about equally on the spacing, must cooperate with the works such as length of antenna arrangement and antenna and actual pitch is much, can affect the change of receiving and transmitting signal frequency shift (FS) and bandwidth as aforementioned intervals, those skilled in the art can be according to the actual state adjustment.
In addition, the spacing design of feeding portion and grounding parts also must be considered mechanism's problem of communication products, because communication products still have other assemblies, for example: microphone, USB, oscillator, when these assemblies and antenna are formed product jointly, may cause screen effect and block radiation, therefore must pay special attention in the design.
Moreover, during layout, must allow feeding portion and grounding parts as far as possible close, such advantage is that feeding portion and grounding parts are designed on identical printed circuit board (PCB), reduces the interference with mechanism.
According to one embodiment of the invention, can integrate the first antenna 110 (comprising the first radiant body 116 and the second radiant body 117) and the second antenna 120 (comprising the 3rd radiant body 124) to form multi-frequency antenna device 100, the first radiant body 116, the second radiant body 117 and the 3rd radiant body 124 at this all are connected in feeding portion 114, in order to receive and dispatch the first high-frequency signal and the second high-frequency signal, the second radiant body 117 is in order to receive and dispatch a low frequency signal respectively for the first radiant body 116 and the 3rd radiant body 124.
In the practical operation, the first high-frequency signal, the frequency that the second high-frequency signal is corresponding with low frequency signal, for example: be used in the system of GSM900, the frequency that low frequency signal is corresponding is 880MHz～960MHz; Be used in DCS1800﹠amp; In the system of PCS1900, the frequency that the first high-frequency signal is corresponding is 1710MHz～1990MHz; Be used in the system of 3G WCDMABand1, the frequency that the second high-frequency signal is corresponding is 2110MHz～2170MHz.In one embodiment, the first high-frequency signal is distinguished corresponding frequency greater than frequency corresponding to low frequency signal with the second high-frequency signal, and the corresponding frequency of the first high-frequency signal can be less than the corresponding frequency of the second high-frequency signal.
In one embodiment, the first antenna 110 also can also comprise slotted eye 118, at least by 117 of the first radiant body 116 and the second radiant bodies around forming, for example: the first radiant body 116 extends to the first grounding parts 112 around slotted eye 118 from feeding portion 114, the second radiant body 117 extends to the opposite side of the first radiant body 116 from feeding portion 114 around slotted eye 118, shown in Fig. 2 A, the size of slotted eye 118 frequency dependence corresponding with the first high-frequency signal and low frequency signal wherein.
In one embodiment, the second antenna 120 also comprises slotted eye 126, its at least by 124 of the 3rd radiant bodies around forming, the size of slotted eye 126 frequency dependence corresponding with the second high-frequency signal wherein.For example: the 3rd radiant body 124 extends to the second grounding parts 122 around slotted eye 126 from feeding portion 114.
It should be noted that also can control second day line 120 makes it to receive low frequency signal, but so must adjust the size of slotted eye 126, therefore just can use the effect that low cost reaches increases multifrequency at the embodiment of this employing.
In the practical operation, the size of slotted eye 126 is less than the size of slotted eye 118, this is because two signals of slotted eye 118 major effects (the first high-frequency signal and low frequency signal), and slotted eye 126 mainly only affects a signal (the second high-frequency signal), if yet make different designs, just slotted eye 126 is not subject to the limits with respect to the size of slotted eye 118.
In one embodiment, the first antenna 110 can be a planar inverted-F antenna, and the second antenna 120 can be a loop aerial (loop antenna).In the practical operation, the second antenna also can comprise the difform antenna with identical function.
As previously described, the distance of grounding parts and feeding portion can have influence on frequency shift (FS) or the bandwidth of antenna frame, and when the second antenna 120 was a loop aerial, loop aerial extended from feeding portion 114, and is connected to the second grounding parts 122 around slotted eye 126.In one embodiment, when the slotted eye 126 in the loop coil was larger, the frequency of the signal that slotted eye 126 affects will more past low frequency frequency deviation.In the practical operation, the second grounding parts 122 is also relevant with antenna arrangement with the spacing of feeding portion 114, and those skilled in the art can select suitable spacing according to actual conditions.
Then please refer to Fig. 3, the voltage standing wave ratio that its embodiment who illustrates multi-frequency antenna device 100 tests out is corresponding to the schematic diagram of frequency.As seen from the figure, the frequency that low frequency signal is corresponding is 880MHz～960MHz, the frequency that the first high-frequency signal is corresponding is 1710MHz～1990MHz, the frequency that the second high-frequency signal is corresponding is 2110MHz～2170MHz, by the frequency match with the second high-frequency signal and the first high-frequency signal, just can reach the effect that increases bandwidth and frequency band.
In addition, according to above-mentioned with two kinds of antennas in conjunction with the time, can increase match circuit to produce the more bandwidth of adaptability, for example at feeding portion front-end configuration electric capacity and Inductive component, to optimize the bandwidth of high frequency.Two antennas that is to say, if when planar inverted-F antenna and coil antenna were integrated, can mate by the circuit with electric capacity, Inductive component in close, reach bandwidth and frequency band optimization.In one embodiment, high frequency antenna adopts the match circuit of series inductance shunt capacitance.
Then please refer to Fig. 4, Fig. 4 illustrates the schematic diagram according to the match circuit 400 among the embodiment of multi-frequency antenna device 100 of the present invention.In the present embodiment, match circuit 400 comprises inductance 420, electric capacity 430, inductance 420 is connected between feeding portion 114 and radio frequency (RF) communication equipment 410, electric capacity 430 is connected between feeding portion 114 and the earth terminal, and multi-frequency antenna device 100 just can reach the optimized effect of bandwidth and frequency band thus.
Comprehensively above-mentioned, the design of this antenna is to use load points and two earth points to integrate two kinds of antenna frames to form, by the combination of two kinds of antennas to increase the antenna utilized bandwidth, for example: produce a low-frequency resonance and two high-frequency resonance.And the resonance of antenna frame medium and low frequency can utilize slotted eye adjusted size operating frequency and impedance bandwidth with high-frequency resonance, to reach needed operating frequency and impedance bandwidth.
In addition, the spacing between antenna load point and two earth points is same distance, reduces the various complexity of making in the design.Secondly, the feeding portion of antenna and grounding parts can dwindle close,, make it and other functional unit coexistences, even on metal flat, still good impedance bandwidth and radiation efficiency can be arranged on same printed circuit board (PCB) with design.
Although the present invention with execution mode openly as above; yet it is not to limit the present invention; any those skilled in the art; without departing from the spirit and scope of the present invention; should do various changes and retouching, so the scope person of defining that protection scope of the present invention should be looked appending claims is as the criterion.
Claims (10)
1. multi-frequency antenna device, this multi-frequency antenna device comprises:
One first antenna, this first antenna comprise a feeding portion and one first grounding parts; And
One second antenna, this second antenna and this first aerial integration, and comprise this feeding portion and one second grounding parts;
Wherein this feeding portion is disposed between this first grounding parts and this second grounding parts, and this first antenna and this second antenna shared this feeding portion when receiving and transmitting signal.
2. multi-frequency antenna device as claimed in claim 1, wherein this first antenna also comprises:
One first radiant body, this first radiant body are connected in this feeding portion and this first grounding parts, and in order to receive and dispatch one first wireless signal; And
One second radiant body, this second radiant body is connected in this feeding portion, and in order to receive and dispatch one second wireless signal.
3. multi-frequency antenna device as claimed in claim 2, wherein this first antenna also comprises:
One slotted eye, this slotted eye at least by this first radiant body and this second radiant body institute around forming, the size of this slotted eye frequency dependence corresponding with this first wireless signal and this second wireless signal wherein.
4. multi-frequency antenna device as claimed in claim 1, wherein this second antenna also comprises:
One radiant body, this radiant body are connected in this feeding portion and this second grounding parts, and in order to receive and dispatch a wireless signal.
5. multi-frequency antenna device as claimed in claim 4, wherein this second antenna also comprises:
One slotted eye, this slotted eye at least by this radiant body institute around forming, the size of this slotted eye frequency dependence corresponding with this wireless signal wherein.
6. multi-frequency antenna device as claimed in claim 1, wherein the spacing of this feeding portion and this first grounding parts equals the spacing of this feeding portion and this second grounding parts haply.
7. multi-frequency antenna device as claimed in claim 1, wherein this first antenna also comprises one first radiant body and one second radiant body, this second antenna also comprises one the 3rd radiant body, this first radiant body, this second radiant body and the 3rd radiant body all are connected in this feeding portion, this first radiant body and the 3rd radiant body are respectively in order to receive and dispatch one first high-frequency signal and one second high-frequency signal, and this second radiant body is in order to receive and dispatch a low frequency signal.
8. multi-frequency antenna device as claimed in claim 7, wherein this first antenna also comprises:
One first slotted eye, this first slotted eye at least by this first radiant body and this second radiant body institute around forming, the size of this first slotted eye frequency dependence corresponding with this first high-frequency signal and this low frequency signal wherein.
9. multi-frequency antenna device as claimed in claim 8, wherein this second antenna also comprises:
One second slotted eye, this second slotted eye at least by the 3rd radiant body institute around forming, the size of this second slotted eye frequency dependence corresponding with this second high-frequency signal wherein.
10. multi-frequency antenna device as claimed in claim 1, wherein this first antenna is a planar inverted-F antenna, this second antenna is a loop aerial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110327859XA CN103078174A (en) | 2011-10-25 | 2011-10-25 | Multifrequency antenna device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110327859XA CN103078174A (en) | 2011-10-25 | 2011-10-25 | Multifrequency antenna device |
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| CN103078174A true CN103078174A (en) | 2013-05-01 |
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| CN201110327859XA Pending CN103078174A (en) | 2011-10-25 | 2011-10-25 | Multifrequency antenna device |
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| CN103700925A (en) * | 2013-12-24 | 2014-04-02 | 上海安费诺永亿通讯电子有限公司 | All-metal mobile terminal double-slit antenna |
| CN104752819A (en) * | 2013-12-31 | 2015-07-01 | 深圳富泰宏精密工业有限公司 | Antenna structure and wireless communication device with antenna structure |
| CN105098328A (en) * | 2014-05-09 | 2015-11-25 | 环旭电子股份有限公司 | Multi-frequency antenna |
| WO2016019733A1 (en) * | 2014-08-07 | 2016-02-11 | 比亚迪股份有限公司 | Antenna radiator, antenna and mobile terminal |
| CN106067591A (en) * | 2016-06-12 | 2016-11-02 | 北京小米移动软件有限公司 | Antenna module |
| CN109742526A (en) * | 2018-12-31 | 2019-05-10 | 瑞声科技（南京）有限公司 | Compact two-band mimo antenna and mobile terminal |
| CN109742513A (en) * | 2018-12-31 | 2019-05-10 | 瑞声科技（南京）有限公司 | Mimo antenna system |
| CN109742527A (en) * | 2018-12-31 | 2019-05-10 | 瑞声科技（南京）有限公司 | Compact two-band mimo antenna |
| CN112310660A (en) * | 2019-07-31 | 2021-02-02 | 奇力新电子股份有限公司 | Antenna module |
| CN112768875A (en) * | 2020-12-25 | 2021-05-07 | Oppo广东移动通信有限公司 | Electronic device |
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| CN109742513A (en) * | 2018-12-31 | 2019-05-10 | 瑞声科技（南京）有限公司 | Mimo antenna system |
| CN109742527A (en) * | 2018-12-31 | 2019-05-10 | 瑞声科技（南京）有限公司 | Compact two-band mimo antenna |
| CN112310660A (en) * | 2019-07-31 | 2021-02-02 | 奇力新电子股份有限公司 | Antenna module |
| CN112768875A (en) * | 2020-12-25 | 2021-05-07 | Oppo广东移动通信有限公司 | Electronic device |
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Application publication date: 20130501 |