CN105552558B - A kind of multiband aerial - Google Patents
A kind of multiband aerial Download PDFInfo
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- CN105552558B CN105552558B CN201410608688.1A CN201410608688A CN105552558B CN 105552558 B CN105552558 B CN 105552558B CN 201410608688 A CN201410608688 A CN 201410608688A CN 105552558 B CN105552558 B CN 105552558B
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Abstract
The present invention relates to technical field of electronic communication, and in particular to a kind of multiband aerial, including, multiple access points are arranged in aerial radiation arm in multistage aerial radiation arm；Matching unit is coupled between aerial radiation arm, to adjust the coefficient of coup of aerial radiation arm；First choice device (201) selects an access point to connect a radio frequency back-end circuit under the action of one first control level in multiple access points；Second selector part (301) selects an access point to connect the ground terminal of a printed circuit board under the action of one second control level in multiple access points.Multiple access points are set in aerial radiation arm of the invention, utilize the available multiple resonance points of the various combination of antenna feed point under different conditions and grounding point, meet the needs of different frequency range, can effectively extend the bandwidth of antenna using the combination technique in feedback place in this way.
Description
Technical field
The present invention relates to technical field of electronic communication, and in particular to a kind of multiband aerial.
Background technique
With the intelligent development of communication terminal, end product allows for supporting the data transmission service of big rate, no
It can only carry out data transmission under WIFI hot spot environment, can also be carried out data transmission by mobile data network.Tradition
2G, 3G network transmission rate it is slower, in order to faster transmission rate, 4G (the 4th generation
Communication system) LTE (Long Term Evolution, long term evolution) network obtained quick development.It is right
For end product, can be using the premise of 4G LTE data network terminal phone not only require nothing more than support traditional 2G,
3G frequency range, will also support 4G frequency range, and the increase of the antenna band support of 4G terminal phone, improve antenna complex and set
Count difficulty.
Summary of the invention
It is an object of the present invention to solve the above technical problem；A kind of multiband aerial is provided.
Technical problem solved by the invention can be realized using following technical scheme:
A kind of multiband aerial, which is characterized in that including,
Multiple access points are arranged in the aerial radiation arm in multistage aerial radiation arm；
Matching unit is coupled between the aerial radiation arm, to adjust the coefficient of coup of the aerial radiation arm；
First choice device (201) selects one under the action of one first control level in multiple described access points
Described access point connects a radio circuit；
Second selector part (301) selects one under the action of one second control level in multiple described access points
Described access point connects the ground terminal of a printed circuit board.
Multiband aerial of the invention, the first choice device (201) include,
First terminal (204), connect with the radio circuit；
Second terminal (202) connects one first access point；
Third terminal (203) connects one second access point；
The first terminal (204) and the Second terminal (202) conducting under the action of the first control level, with
First access point is connected as feeding point or the first terminal (204) and the third terminal (203), with described the
Two access points are as feeding point.
Multiband aerial of the invention, the second selector part (301) include,
Forth terminal (302), connect with the printed circuit board；
5th terminal (303), connect with an access point；
Under the action of the second control level the forth terminal (302) and the 5th terminal (303) be connected or
It disconnects.
Multiband aerial of the invention, including multiple second selector parts (301), each second selector part
(301) one of described access point and the printed circuit board are selectively connected.
Multiband aerial of the invention, the matching unit are mainly formed by the gap between the aerial radiation arm, are led to
It crosses the shape for adjusting the gap and/or size adjusts the coefficient of coup.
Multiband aerial of the invention, the aerial radiation arm surround a rectangular configuration；The rectangular configuration includes one the
One strip side, first strip side are equipped with notch, and first strip side is divided into the first radiation arm by the notch
(103) and the second radiation arm (109).
Multiband aerial of the invention, first radiation arm (103) are equipped with first access close to the indentation, there
Point (101).
Multiband aerial of the invention, second radiation arm (109) are equipped with the third access point being arranged successively
(102), the 4th access point (112) and the 5th access point (111).
Multiband aerial of the invention, the rectangular configuration includes the second strip side, opposite with first strip side to set
It sets, second strip side is equipped with second access point (106).
The utility model has the advantages that due to using the technology described above, multiple access points are arranged in aerial radiation arm of the invention, utilize
The available multiple resonance points of the various combination of antenna feed point and grounding point, meet the needs of different frequency range under different conditions,
The bandwidth of antenna can be effectively extended using the combination technique in feedback place in this way.
Detailed description of the invention
Fig. 1 is a kind of antenna cabling form schematic diagram of specific embodiment of the invention；
Fig. 2 is the schematic diagram of first choice device of the invention；
Fig. 3 is the schematic diagram of second selector part of the invention；
Fig. 4 is the return loss plot figure under different situations of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art without creative labor it is obtained it is all its
His embodiment, shall fall within the protection scope of the present invention.
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
The present invention will be further explained below with reference to the attached drawings and specific examples, but not as the limitation of the invention.
It is well known that the position of antenna cabling (pattern) feeding point and grounding point have for antenna resonance it is important
Effect.Often in complicated severe antenna environment, the position of antenna feed point and grounding point directly determines antenna performance
Quality.Existing antenna for mobile phone position of antenna feed point and grounding point in the case of difference does not change, and antenna
The feeding point of capability bandwidth and antenna, grounding point have a very large relationship.
Referring to Fig.1, a kind of multiband aerial, which is characterized in that including,
Multiple access points are arranged in aerial radiation arm in multistage aerial radiation arm；
Matching unit is coupled between aerial radiation arm, to adjust the coefficient of coup of aerial radiation arm；
First choice device 201 selects an access point under the action of one first control level in multiple access points
Connect a radio circuit；
Second selector part 301 selects an access point under the action of one second control level in multiple access points
Connect the ground terminal of a printed circuit board (Printed Circuit Board, PCB).
Multiband aerial of the invention, first choice device 201 may include,
First terminal 204, connect with radio circuit；
Second terminal 202 connects one first access point 101；
Third terminal 203 connects one second access point 106；
First terminal 204 and Second terminal 202 are connected under the action of the first control level, with the first access point 101 work
It is connected for feeding point or first terminal 204 and third terminal 203, using the second access point 106 as feeding point.
Multiband aerial of the invention, second selector part 301 may include,
Forth terminal 302, connect with printed circuit board；
5th terminal 303 is connect with an access point；
Forth terminal 302 and the 5th terminal 303 are turned on or off under the action of the second control level.
Multiband aerial of the invention, matching unit is mainly formed by the gap between aerial radiation arm, by adjusting seam
The shape and/or size of gap adjust the coefficient of coup.
Referring to Fig.1, multiband aerial of the invention, aerial radiation arm can surround a rectangular configuration；Rectangular configuration includes
One first strip side, the first strip side are equipped with notch, and the first strip side is divided into the first radiation arm 103 and the second spoke by notch
Penetrate arm 109.
Multiband aerial of the invention, the first radiation arm 103 can be equipped with the first access point 101 close to indentation, there.
Multiband aerial of the invention can be equipped with the third access point 102 being arranged successively, the on second radiation arm 109
Four access points 112 and the 5th access point 111.
Multiband aerial of the invention, rectangular configuration further include the second strip side, are oppositely arranged with the first strip side, second
The second access point 106 can be equipped on strip side.
Fig. 1 is a kind of antenna cabling form of specific embodiment, in aerial radiation arm distribution there are five with external circuit
Access point.Wherein the first access point 101, the feeding point that the second access point 106 is antenna under different conditions；Third access point 102,
4th access point 112 and the 5th access point 111 are the grounding point of antenna under different conditions.
It should be noted that antenna cabling of the invention can have other modifications, feeding point of the invention and grounding point
Number is not limited only to the quantity in the present invention, can have multiple.
Fig. 2 is the schematic diagram of first choice device 201, has switchable radio frequency signal path.Utilize the first control level
The on-off of different accesses is controlled for high level or low level,
When it is implemented, first choice device 201 can be connect by first terminal 204 with radio circuit, Second terminal
202, feeding point connections different from antenna cabling, the signal that such radio circuit issues can lead to third terminal 203 respectively
It crosses first choice device 201 and is transferred to antenna, gone out by aerial radiation.A kind of specific embodiment, Second terminal 202 can be with
First access point 101 of multiband aerial connects, and third terminal 203 can be connect with the second access point 106 of multiband aerial,
It can choose first terminal 204 according to the height of the first control level to be connected to Second terminal 202 or first terminal 204 and the
The connection of three terminals 203, that is, select different antenna access points as feeding point and radio frequency electrical according to the height of control level
Road connection.
As a further improvement of the present invention, multiband aerial of the invention may include multiple second selector parts
301, each second selector part 301 selectively connects one of access point and printed circuit board.
Fig. 3 be the second selector part 301 with on-off property schematic diagram, using second control level be high level or
The on-off of low level control access.Forth terminal 302 connects an access point of antenna cabling, the connection printing of the 5th terminal 303
Circuit board.When second selector part 301 is controlled by high level, forth terminal 302 and the 5th terminal 303 are connected, and antenna is walked
The access point and printed circuit board of line are connected, and can choose the different position of antenna cabling in this way and printed circuit board is connected.
Three second selector parts 301 can be arranged in a kind of specific embodiment in antenna control system, be denoted as respectively
Two selector 301A, 301B, 301C；Second selector part 301A controllably connects third access point 102 and printed circuit
The ground of plate, second selector part 301B controllably connect the ground of the 4th access point 112 and printed circuit board, second selector part
301C controllably connects the ground of the 5th access point 111 with printed circuit board, such antenna cabling part just there are three with printing
The tie point of circuit board is that high level or low level can choose grounding point and print different on antenna by the second control level
The ground of circuit board processed connects.
Antenna difference feedback place is controlled using first choice device 201, second selector part 301 with regard to different conditions below to tie
It closes antenna pattern and does specific description.
Situation 1:
When first control level is high level, radio circuit that the first terminal 204 of first choice device 201 connects and the
First access point 101 of the antenna part that two-terminal 202 connects is connected, that is to say, that high level controls first choice device 201
When, in antenna part 101 be antenna feeding point.At this point, the control level of second selector part 301A is high level, the second choosing
It selects device 301A and controls the connection between the lower third access point 102 and printed circuit board ground for connecting antenna part in high level.
Second selector part 301B, second selector part 301C control level be respectively low level, second selector part
301B, second selector part 301C are in off state under low level control, and the 5th access point 111, the 4th access point 112 are not
With printed circuit board connect.
It can be seen that under such situation in conjunction with the return loss plot of Fig. 4, radiation arm 103, radiation arm 104, radiation arm
105, radiation arm 107, radiation arm 108, radiation arm 109 generate resonance, resonance point f1, f2, f4 jointly, and radiation arm 110 generates
Resonance point be f3, can by adjusting the length of 103 to the second radiation arm 109 of the first radiation arm come adjust resonance point f1, f2,
F4, can be by adjusting the slit width between the first radiation arm 103 and radiation arm 105, radiation arm 107 and the second radiation arm 109
Degree and the adjustable resonance point f2 of gap width between radiation arm 101 and radiation arm 102, radiation arm 110 control resonance point
F3, the length of radiation arm 110 directly affect resonance point f3.Under such situation, resonance point f1 low frequency can cover 700~
820MHz, corresponding frequency range are LTE FDD frequency range, and high-frequency resonant point f2 can cover GSM band 1800, and resonance point f3 covers
Cover WCDMA band 2100.
Situation 2:
First control level is high level, and first choice device 201 is still controlled by high level, first choice device
First access point of the antenna part that the radio circuit access point that 201 first terminal 204 connects is connect with Second terminal 202
101 connect, and the feeding point of antenna is identical as situation 1, connect unlike situation 1 with the third access point 102 of antenna part
Second selector part 301A by low level control, between third access point 102 and printed circuit board ground be in off state.With
The second selector part 301C of 5th access point 111 connection by low level control, the 5th access point 111 with printed circuit board it
Between be in off state.Second selector part 301C controls lower the 4th access point 112 of connection with printed circuit board in high level,
The grounding point of antenna part is the 4th access point 112 at this time.
At this time due to radiation arm 101, radiation arm 103, radiation arm 104, radiation arm 105, radiation arm 107, radiation arm 108,
Radiation arm 109 with pcb board is connected in advance by radiation arm 112, and the path on antenna surface current reflux to ground shortens, former in this way
To radiate the resonance point f1 of arm lengths generation since shortening to the high direction offset of frequency for resonance length generates resonance point f01.
Same resonance point f2, f4, which are also deviated to high frequency direction, generates resonance point f02, f04.Resonance point f3 does not have because of the length of radiation arm 110
There are change, not big variation.It will be seen that low-frequency resonant point is offset to f01 from Fig. 4, it can just cover 824~
960MHz, corresponding frequency range are GSM850,900 frequency ranges.High-frequency resonant point f02 just covers 1900 frequency range of GSM.
Situation 3:
The feeding point and grounding point that antenna part is chosen are different from situation 1, situation 2.First choice device 201 is by low
Level control, first terminal 204 is connected to third terminal 203, so that the second of the antenna part being connected with third terminal 203
Access point 106 and radio circuit power ON, using the second access point 106 as feeding point；
The second selector part 301A connecting with third access point 102 is by low level control, the state in disconnection, with
The second selector part 301B of four access points 112 connection is also at the state of disconnection by low level control, third access point 102,
4th access point 112 is disconnected with rear end pcb board.And the second selector part 301C connecting with the 5th access point 111 is by high electricity
Flat control, in an ON state, so that the 5th access point 111 of antenna part is connected with rear end pcb board, in other words antenna part
The grounding point divided is the 5th access point 111.
At this time using aerial radiation arm 101, radiation arm 103, radiation arm 104, resonance point f6 caused by radiation arm 105,
Resonance point f5 is generated by radiation arm 107, radiation arm 108, radiation arm 109, radiation arm 110.By adjusting they length and
The adjustable resonance point of gap width between them certainly also influences whether situation 1, resonance point in situation 2 when adjustment
Position needs to take into account three kinds of situations and is adjusted.In conjunction with Fig. 4, resonance point f6, f5 can just cover LTE TDD, LTE
The corresponding high band of FDD.
To sum up, the present invention controls antenna different piece by first choice device and second selector part and connects with radio circuit
Access point connection, different feeding points can be had by forming antenna；And different piece is connect with printed circuit board, forming antenna can be with
There is different grounding points, be capable of the bandwidth of effective extended antenna, multi-mode, the multiband work of antenna may be implemented.
The present invention realizes the feeding point of antenna, grounding point under different situations using Reconfiguration Technologies can be with flexible choice not
Same position, effectively changes the resonance length of antenna, extends the bandwidth of antenna, realize multi-mode, the multifrequency of antenna
Section work.The present invention takes full advantage of the changeability of antenna feed point Yu grounding point position, increases antenna resonance point, can extend
The bandwidth of antenna.
The above is only preferred embodiments of the present invention, are not intended to limit the implementation manners and the protection scope of the present invention, right
For those skilled in the art, it should can appreciate that and all replace with being equal made by description of the invention and diagramatic content
It changes and obviously changes obtained scheme, should all be included within the scope of the present invention.
Claims (4)
1. a kind of multiband aerial, which is characterized in that including,
Multiple access points are arranged in the aerial radiation arm in multistage aerial radiation arm；
Matching unit is coupled between the aerial radiation arm, to adjust the coefficient of coup of the aerial radiation arm, described
It is mainly formed by the gap between the aerial radiation arm with unit, described in the shape and size adjusting by adjusting the gap
The coefficient of coup；
First choice device (201) selects described in one in multiple described access points under the action of one first control level
Access point connects a radio circuit；
Second selector part (301) selects described in one in multiple described access points under the action of one second control level
Access point connects the ground terminal of a printed circuit board；
The aerial radiation arm surrounds a rectangular configuration；The rectangular configuration includes one first strip side, first strip side
It is equipped with notch, first strip side is divided into the first radiation arm (103) and the second radiation arm (109) by the notch；
First radiation arm (103) is equipped with one first access point (101) close to the indentation, there；
Second radiation arm (109) is equipped with third access point (102), the 4th access point (112) and the 5th being arranged successively
Access point (111)；
The rectangular configuration includes the second strip side, is oppositely arranged with first strip side, second strip side is equipped with
One second access point (106)；
First access point (101), the feeding point that second access point (106) is antenna under different conditions；
The third access point (102), the 4th access point (112) and the 5th access point (111) are under different conditions
The grounding point of antenna.
2. multiband aerial according to claim 1, which is characterized in that the first choice device (201) includes,
First terminal (204), connect with the radio circuit；
Second terminal (202) connects first access point (101)；
Third terminal (203) connects second access point (106)；
The first terminal (204) and the Second terminal (202) conducting under the action of the first control level, with described
First access point (101) is connected as feeding point or the first terminal (204) and the third terminal (203), with described the
Two access points (106) are used as feeding point.
3. multiband aerial according to claim 1, which is characterized in that the second selector part (301) includes,
Forth terminal (302), connect with the printed circuit board；
5th terminal (303), connect with an access point；
The forth terminal (302) and the 5th terminal (303) are turned on or off under the action of the second control level.
4. multiband aerial according to claim 1, which is characterized in that including multiple second selector parts (301),
Each second selector part (301) selectively connects one of described access point and the printed circuit board；Including
Three second selector parts (301) are denoted as second selector part 301A, second selector part 301B, the second selection respectively
Device 301C, the second selector part 301A controllably connect the third access point (102) and the printed circuit board
Ground；The second selector part 301B controllably connects the ground of the 4th access point (112) and the printed circuit board；
The second selector part 301C controllably connects the ground of the 5th access point (111) and the printed circuit board, passes through
The second control level is the ground connection that high level or low level select grounding point and printed circuit board different on antenna；
Under first situation: the first control level is high level, and first access point (101) is the feeding point of antenna, institute
It states second selector part 301A and controls the lower ground for connecting the third access point (102) and the printed circuit board in high level
Connection, the second selector part 301B, the second selector part 301C are in off state under low level control；
First radiation arm (103) and second radiation arm (109) and second strip on first strip side
Radiation arm 105, radiation arm 107 on side and the radiation arm 104 positioned at short side and radiation arm 108 generate resonance, resonance point jointly
For f1, f2, f4；Radiation arm 110 close to first access point (101) setting generates resonance point f3；
Adjust first radiation arm (103) and the radiation arm 105, the radiation arm 107 and second radiation arm (109)
Between gap width, the radiation arm 101 where adjustment first access point (101) and third access point (102) institute
Radiation arm 102 between gap width to adjust resonance point f2, the resonance point f2 covers GSM band 1800；It is described
The length of radiation arm 110 controls resonance point f3, and the resonance point f3 covers WCDMA band 2100；Under second situation: described
One control level is high level, and first access point (101) is the feeding point of antenna, and the second selector part 301C is in height
The connection on the lower ground for connecting the 4th access point (112) and the printed circuit board of level control, the second selector part
301B, the second selector part 301A are in off state under low level control；
Radiation arm 101 where first access point (101), first radiation arm (103) on first strip side
And radiation arm 105, radiation arm 107 and the radiation positioned at short side on second radiation arm (109) and second strip side
Arm 104 and radiation arm 108 are connect by radiation arm 112 where the 4th access point (112) and the ground of the printed circuit board
Logical, the resonance point f1 generates resonance point f01 to the high direction offset of frequency；The resonance point f2, resonance point f4 are to high frequency side
Resonance point f02 is generated to offset, resonance point f04, the resonance point f01 cover 824~960MHz, and corresponding frequency range is
GSM850,900 frequency ranges, the resonance point f02 cover 1900 frequency range of GSM；Under third situation: the first control level is low
Level, second access point (106) are used as feeding point and radio circuit power ON, and the second selector part 301C is in high level
The connection on the lower ground for connecting the 5th access point (111) and the printed circuit board of control, the second selector part 301B,
The second selector part 301A is in off state under low level control；
Radiation arm 101, first radiation arm (103), the radiation arm positioned at short side where first access point (101)
104, radiation arm 105 on second strip side generates resonance point f6, and radiation arm 107 on second strip side is located at
The radiation arm 108 of short side, second radiation arm (109), the production of radiation arm 110 close to first access point (101) setting
Raw resonance point f5, adjust the radiation arm length and between gap width one adjust the resonance point f6, resonance point f5
Cover LTE TDD, the corresponding high band of LTE FDD.
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| CN201410608688.1A CN105552558B (en) | 2014-10-31 | 2014-10-31 | A kind of multiband aerial |
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| CN201410608688.1A CN105552558B (en) | 2014-10-31 | 2014-10-31 | A kind of multiband aerial |
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| CN105552558B true CN105552558B (en) | 2019-02-12 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103066375A (en) * | 2011-10-20 | 2013-04-24 | 宏达国际电子股份有限公司 | Handheld device and planar antenna thereof |
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| WO2001029927A1 (en) * | 1999-10-15 | 2001-04-26 | Siemens Aktiengesellschaft | Switchable antenna |
| JP3889423B2 (en) * | 2004-12-16 | 2007-03-07 | 松下電器産業株式会社 | Polarization switching antenna device |
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| CN103066375A (en) * | 2011-10-20 | 2013-04-24 | 宏达国际电子股份有限公司 | Handheld device and planar antenna thereof |
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Application publication date: 20160504 Assignee: SPREADTRUM COMMUNICATIONS (SHANGHAI) Co.,Ltd. Assignor: Xin Xin finance leasing (Tianjin) Co.,Ltd. Contract record no.: X2021110000055 Denomination of invention: A multi band antenna Granted publication date: 20190212 License type: Exclusive License Record date: 20211227 |
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Effective date of registration: 20230714 Address after: 201203 Shanghai city Zuchongzhi road Pudong New Area Zhangjiang hi tech park, Spreadtrum Center Building 1, Lane 2288 Patentee after: SPREADTRUM COMMUNICATIONS (SHANGHAI) Co.,Ltd. Address before: Room 2502, COFCO Plaza, 990 Nanma Road, Nankai District, Tianjin 300100 Patentee before: Xin Xin finance leasing (Tianjin) Co.,Ltd. |
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