CN104485512B - For the LTE carrier aggregation antenna with metal framework portable set - Google Patents
For the LTE carrier aggregation antenna with metal framework portable set Download PDFInfo
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Abstract
It is used for the LTE carrier aggregation antenna with metal framework portable set the invention discloses a kind of, including housing, earth plate, metal framework and antenna module, the first gap and the second gap are symmetrically offered on the metal framework, metal framework is divided into frame epimere and frame hypomere by first gap and the second gap；The antenna module includes radiating principal, the first current feed department, the second current feed department, bandpass filter, low frequency matching module and high frequency matching module, the radiating principal is frame hypomere, first current feed department and the second current feed department are respectively positioned in antenna headroom area and the first current feed department is parallel to each other with the second current feed department, first current feed department is connected by low frequency matching module with radiating principal, and second current feed department is connected by high frequency matching module with radiating principal.The present invention can support the outer carrier aggregation antenna of the band of LTE A technologies, be greatly enhanced data transmission rate, and communication performance is good.
Description
Technical field
The present invention relates to antenna technical field, more particularly to a kind of LTE loads being used for metal framework portable set
Ripple polymerize antenna.
Background technology
With developing rapidly for LTE technologies, increasing portable set starts to support LTE technologies.Set in LTE antenna
In meter, the requirement of the beamwidth of antenna is：Low frequency bandwidth range is 698-960MHz, and high frequency bandwidth scope is 1710-2690MHz.It is logical
Mimo antenna is needed to use in normal LTE technologies.In order to further improve data transmission efficiency, LTE-A technologies also need to use
Carrier aggregation antenna.
On the one hand, in order to increase the aesthetic of the outer surface of mobile device, designer starts widely used metal finishing
Framework is as frame.The proximal segment time, there is the antenna structure based on metal framework in the market, but is mostly based on metal frame
In the antenna structure of frame, metal framework is intended only as a part for antenna radiation unit, thus above-mentioned antenna structure also needs to examine
Consider the main part design (such as FPC antenna radiating element or LDS antenna radiation units) of antenna radiation unit, the main part
It is generally arranged on antenna holder.For this structure, on antenna holder the electromagnetic coupled of antenna radiator and metal framework or
Interaction force is very big, and this can increase the difficulty of Antenna Design.It can also increase in addition, antenna radiator is arranged on antenna holder
Production cost.Therefore, it is ideal scheme metal framework to be served as into complete antenna radiator, so can not only simplify antenna
Design program, additionally it is possible to reduce the production cost of antenna.Proximal segment time, iPhone 6 antenna structure are exactly to utilize outside gold
Belong to framework as complete antenna radiator, but to cover LTE wholes frequency range, it is necessary to set up switch.Specifically, iPhone 6
LTE low-frequency ranges (698-960MHz) bandwidth is divided into multiple frequency sub-band by antenna structure by switching., typically for switch shape
Formula covers the design of LTE low-frequency ranges, and whole low-frequency range is usually divided into three frequency sub-band.Due to being deposited between frequency sub-band
In frequency range gap, there is the frequency of wider bandwidth in its frequency sub-band in it can not cover low-frequency range the shortcomings that above-mentioned antenna structure
Section, such as frequency range 28.
On the other hand, in order to further strengthen the data transmission efficiency of GSM, third generation cooperative partner program
Carrier aggregation technology is introduced in LTE-A specifications.Carrier aggregation technology can implement that (Continuous Band is non-in intralband carrier aggregation
Continuous Band) or with outer carrier aggregation (discontinuous frequency range).In intralband carrier aggregation, all carrier waves are in same work
In frequency band (such as LTE low-frequency ranges), and different working frequency range is in carrier wave in outer carrier aggregation.For Antenna Design
Speech, intralband carrier aggregation is easily realized, and the flexibility ratio with outer carrier aggregation is better than intralband carrier aggregation, so in most feelings
The outer carrier aggregation of condition lower band will be used.At present, band is outer in the specification for the LTE-A that third generation cooperative partner program (3GGP) proposes
Carrier aggregation includes the band number of 12 pairs of different working frequency range.For Antenna Design, a master with outer carrier aggregation
It is one suitable RF front end structure of selection to want precondition.It is single that this is due to that the RF front end structures of legacy cellular antenna only have
Feed end.If using traditional RF frameworks, (in the case where that need not use switch) intralband carrier aggregation can be easier to
Realization, but could only be realized the working frequency range of duplexer is synchronous with antenna feed with outer carrier aggregation.This needs difference
The duplexer of frequency range must synchronously or matching, but the duplexer synchronization of described different frequency range or matching scheme are difficult reality
It is existing.
The antenna scheme and discomfort of single feed end are all based on for the most of LTE antenna that mobile device uses
The outer carrier aggregation of crossed belt and it is complicated the problem of, it is necessary to the antenna structure of above-mentioned portable set is made further to change
Enter.
The content of the invention
The present invention provides a kind of LTE carrier aggregation antenna for being used to have metal framework portable set, mainly solves
Technical problem is that design is a kind of simple in construction, it would be preferable to support the outer carrier aggregation antenna of band of LTE-A technologies, especially for
The equipment of metal framework.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：Provide a kind of for having metal frame
The LTE carrier aggregation antenna of frame portable set, including housing, earth plate, metal framework and antenna module, the earth plate
It is placed in housing, the metal framework is fixed on the surrounding side wall of housing, is set between the metal framework bottom and earth plate
There is accommodating cavity,
The first gap and the second gap are symmetrically offered on the metal framework, first gap and the second gap will
Metal framework is divided into frame epimere and frame hypomere, and antenna headroom area is formed between the frame hypomere and earth plate；
The antenna module includes radiating principal, the first current feed department, the second current feed department, low frequency matching module and high frequency
With module, bandpass filter, the radiating principal is frame hypomere, and first current feed department and the second current feed department are respectively positioned on day
In line clearance zone and the first current feed department is parallel to each other with the second current feed department, and first current feed department passes through low frequency matching module and spoke
Main body connection is penetrated, second current feed department is connected by high frequency matching module with radiating principal, one end of the bandpass filter
It is connected with radiating principal, the other end of the bandpass filter extends to earth plate, and the bandpass filter is intended, primarily, to improve
Performance of the antenna in high band.Here, low frequency and the high frequency matching module will not only have to its corresponding feed port frequency range
The function of being matched, while also to ensure the requirement for meeting isolation between low frequency and the feed port of high frequency, therefore this
Will also the effect with filtering or the function with duplexer while with matching with module.
The beneficial effects of the present invention are：It is different from the most of LTE antenna that mobile device in the prior art uses
The problem of antenna scheme of single feed end is not appropriate for outer carrier aggregation is all based on, is used to have the invention provides one kind
Have the LTE carrier aggregation antenna of metal framework portable set, use set in antenna headroom area parallel the first current feed department with
And second current feed department, the first current feed department support low frequency band, the second current feed department supports high-frequency band, and the first current feed department is presented with second
Electric portion is connected by low frequency matching module and high frequency matching module with filtering or duplexer functionality with radiating principal respectively, energy
Enough realize with outer carrier aggregation, be greatly enhanced data transmission efficiency；And bandpass filter can improve antenna in high band
Performance；In addition, directly by the use of the second framework of metal framework as radiating principal, without designing additional radiation agent structure,
Antenna structure can be simplified, reduces the production cost of antenna, improves the manufacture efficiency of antenna.
Brief description of the drawings
Fig. 1 is the structural representation of LTE carrier aggregation antenna of the present invention；
Fig. 2 is the fundamental diagram of LTE carrier aggregation antenna of the present invention；
Fig. 3 is the return loss plot figure of LTE carrier aggregation antenna of the present invention；
Fig. 4 is the antenna efficiency figure of LTE carrier aggregation antenna low-frequency range of the present invention；
Fig. 5 is the antenna efficiency figure of LTE carrier aggregation antenna high band of the present invention；
Fig. 6 is the high band return loss plot of LTE carrier aggregation antenna of the present invention with electricity in the band-pass filter
Feel variation diagram；
Fig. 7 is the structural representation of another embodiment of LTE carrier aggregation antenna of the present invention.
Label declaration：
11st, frame epimere；12nd, frame hypomere；2nd, earth plate；31st, the first current feed department；
32nd, the second current feed department；4th, accommodating cavity；5th, USB interface；6th, bandpass filter；
71st, the first gap；72nd, the second gap.
Embodiment
To describe the technology contents of the present invention, the objects and the effects in detail, below in conjunction with embodiment and coordinate attached
Figure is explained.
The design of most critical of the present invention is:Using in the first independent current feed department of antenna headroom area setting and the second feedback
Electric portion, the first current feed department support low frequency band, and the second current feed department supports high-frequency band, and the first current feed department and the second current feed department are distinguished
It is connected by low frequency matching module and high frequency matching module with filtering or duplexer functionality with radiating principal, high band is included
There is the bandpass filter for changing its performance, so as to realize with outer carrier aggregation.
Fig. 1 and Fig. 2 is refer to, it is a kind of for the LTE carrier aggregation antenna with metal framework portable set, including
Housing, earth plate 2, metal framework and antenna module, the earth plate 2 are placed in housing, and the metal framework is fixed on
The surrounding side wall of housing, is provided with accommodating cavity 4 between the metal framework bottom and earth plate 2, on the metal framework symmetrically
The first gap 71 and the second gap 72 are offered, metal framework is divided into frame epimere by the gap 72 of the first gap 71 and second
11 with frame hypomere 12, formation antenna headroom area between the frame hypomere 12 and earth plate 2；The antenna module includes radiation
Main body, the first current feed department 31, the second current feed department 32, low frequency matching module and the high frequency matching with filtering or duplexer functionality
Module, the radiating principal are frame epimere 11, and the current feed department 32 of the first current feed department 31 and second is respectively positioned on antenna headroom
In area and the first current feed department 31 is parallel to each other with the second current feed department 32, and first current feed department 31 passes through low frequency matching module and spoke
Main body connection is penetrated, second current feed department 32 is connected by high frequency matching module with radiating principal, and the one of the bandpass filter 6
End is connected with radiating principal, and the other end of the bandpass filter 6 extends to earth plate 2, and the bandpass filter is mainly used in
Improve performance of the antenna in high band.Here, low frequency and the high frequency matching module will not only have to its corresponding feed port
The function that frequency range is matched, while also to ensure the requirement for meeting isolation between low frequency and the feed port of high frequency, therefore
The matching module will also the effect with filtering or the function with duplexer while with matching.
It was found from foregoing description, the beneficial effects of the present invention are：Be different from mobile device in the prior art use it is exhausted
The problem of antenna scheme that most LTE antenna is all based on single feed end is not appropriate for outer carrier aggregation, the present invention
A kind of LTE carrier aggregation antenna for being used to have metal framework portable set is provided, it is flat using being set in antenna headroom area
Capable the first current feed department 31 and the second current feed department 32, the first current feed department 31 support low frequency band, and the second current feed department 32 supports height
Frequent section, the first current feed department 31 and the second current feed department 32 respectively by with filtering or duplexer functionality low frequency matching module and
High frequency matching module is connected with radiating principal, can be realized with outer carrier aggregation, is greatly enhanced data transmission efficiency；And band
Bandpass filter can improve performance of the antenna in high band；In addition, directly led by the use of the second framework of metal framework as radiation
Body, without designing additional radiation agent structure, antenna structure can be simplified, reduces the production cost of antenna, improves the system of antenna
Make efficiency.
Further, the first gap 71 is offered on the left side wall of the metal framework, is opened on the right side wall of metal framework
Provided with the second gap 72, and the first gap 71 and the second gap 72 are close to metal framework bottom position.Metal framework or so two
The slotting structure that side is set, can make the length of the second framework preferable, i.e. the length of radiating principal is good, the stable performance of antenna.
Further, the bottom of the metal framework offers the first gap 71 and the second gap 72, and the first gap
71 and second gap 72 respectively close to metal left side wall and right side wall.It is pointed out that open up two in the bottom of metal framework
Individual gap is the alternative solution that two gaps are opened up at left and right sides of metal framework, and is cracked what metal framework bottom opened up
Structure, the contact gap of hand when can prevent from conversing, improves communication quality.
Further, in addition to be arranged at the bandpass filter 6 in antenna headroom area, one end of the bandpass filter 6 with
Radiating principal connects, and the other end of the bandpass filter 6 extends to earth plate 2.Above-mentioned bandpass filter 6 can not only be realized
Low-frequency range and the matching of the synchronous impedance of high band, but also performance of the antenna in high-frequency band can be lifted.
Further, the bandpass filter 6 includes the electric capacity and inductance of concatenation.The resonant frequency and Q of bandpass filter 6
Value is determined by the value of electric capacity and inductance.
Further, in addition to the USB interface 5 in antenna headroom area is arranged at, the USB interface 5 is located at metal framework bottom
On the perpendicular bisector in portion, and USB interface 5 is connected with earth plate 2.Influenceed although increasing USB interface 5 and the overall performance of antenna being designed
Design difficulty that is larger or adding integrated antenna, but this antenna can greatly be improved by increasing the USB interface 5 in the design
The practicality of design.In addition, the present invention program is also applied for being not provided with the feelings of the LTE carrier aggregation antenna of USB interface
Condition.
Further, the low-frequency range that first current feed department 31 is supported is less than 1GHz frequencies, second current feed department
32 high-frequency ranges supported are more than 1.7GHz frequencies.
Fig. 1 is refer to, embodiments of the invention one are：It is a kind of to be used for the LTE carrier waves with metal framework portable set
It polymerize antenna, including housing, earth plate 2, metal framework and antenna module, the earth plate 2 are placed in housing, the gold
Category framework is fixed on the surrounding side wall of housing, and accommodating cavity 4, the metal are provided between the metal framework bottom and earth plate 2
The left and right sides wall of framework symmetrically offers the first gap 71 and the second gap 72, and symmetry axis is the perpendicular bisector of framework broadside,
Metal framework is divided into frame epimere 11 and frame hypomere 12, the frame hypomere 12 by the gap 72 of the first gap 71 and second
Antenna headroom area is formed between earth plate 2；The antenna module includes radiating principal, the first current feed department 31, the second current feed department
32nd, bandpass filter 6, low frequency matching module and high frequency matching module with filtering or duplexer functionality, the radiation master
Body is frame hypomere 12, and the current feed department 32 of the first current feed department 31 and second is respectively positioned in antenna headroom area and the first current feed department
31 are parallel to each other with the second current feed department 32, and first current feed department 31 is connected by low frequency matching module with radiating principal, described
Second current feed department 32 is connected by high frequency matching module with radiating principal.
Fig. 7 is refer to, embodiments of the invention two are：It is a kind of to be used for the LTE carrier waves with metal framework portable set
It polymerize antenna, including housing, earth plate 2, metal framework and antenna module, the earth plate 2 are placed in housing, the gold
Category framework is fixed on the surrounding side wall of housing, and accommodating cavity 4, the metal are provided between the metal framework bottom and earth plate 2
Offering the first gap 71 and the second gap 72 bottom symmetrical of framework, symmetry axis is the perpendicular bisector of framework broadside, described the
Metal framework is divided into frame epimere 11 and frame hypomere 12, the frame hypomere 12 and ground connection by one gap 71 and the second gap 72
Antenna headroom area is formed between plate 2；The antenna module includes radiating principal, the first current feed department 31, the second current feed department 32, band logical
Wave filter 6, low frequency matching module and high frequency matching module, the radiating principal are frame hypomere 12, first current feed department
31 and second current feed department 32 be respectively positioned in antenna headroom area and the first current feed department 31 is parallel to each other with the second current feed department 32, it is described
First current feed department 31 is connected by low frequency matching module with radiating principal, second current feed department 32 by high frequency matching module with
Radiating principal connects；One end of the bandpass filter 6 is connected with radiating principal, and the other end of the bandpass filter 6 is to connecing
Floor 2 extends.
The difference of embodiment one and embodiment two is that the position difference in symmetrical gap is opened up on metal framework.Symmetrically open up
Gap outward appearance is good, meets the aesthetical standard of consumer.Compared with the left and right sides is opened in gap, gap is opened in metal framework bottom
Can avoid portable set using when contact of the hand with gap, improve communication quality.In addition, this programme can be applicable to
There is no the antenna structure of the LTE carrier aggregation of metal framework.
Table 1 is the carrier aggregation logarithm with all band numbers of outer carrier aggregation, and the table includes 12 pairs of different work frequencies
The band number of section.From following table as can be seen that except frequency range 3 and the carrier aggregation of frequency range 7, the low-frequency band of other 11 pairs of carrier aggregations
Frequency is both less than 1.0GHz, and high-band frequency is both greater than 1.7GHz.Therefore, by setting the first current feed department and the second feed
Portion can realize (in addition to frequency range 3 and frequency range 7) with outer carrier aggregation, without in front end structure using being difficult to
Duplexer desynchronize matching high band and low-frequency range.Further, need to set if the carrier aggregation that support all frequency ranges
The 3rd current feed department that frequency range is 2.5GHz-2.69GHz is supported, with the carrier aggregation between band support 3 and frequency range 7.This
The emphasis that scheme is realized is emphatically to other 11 to the Antenna Designs of (both in addition to frequency range 3 and frequency range 7) polymerization carrier waves.
| Band number | Descending (MHz) | Up (MHz) | Logarithm |
| 1 | 1920-1980 | 2110-2170 | 5,18,19 |
| 2 | 1850-1910 | 1930-1990 | 17 |
| 3 | 1710-1785 | 1805-1880 | 5,7,20 |
| 4 | 1710-1755 | 2110-2155 | 12,13.17 |
| 5 | 824-849 | 869-894 | 1,3 |
| 7 | 2500-2570 | 2620-2690 | 3,20 |
| 12 | 699-716 | 729-746 | 4 |
| 13 | 777-787 | 746-756 | 4 |
| 17 | 704-716 | 734-746 | 2,4 |
| 18 | 815-830 | 860-875 | 1 |
| 19 | 830-845 | 875-890 | 1 |
| 20 | 832-862 | 791-821 | 4,7 |
Table 1
Here is to test the work of this programme antenna system based on size 70mm (broadside) * 140mm (long side) mobile phone
Performance parameter.Fig. 3 is the return loss plot figure of LTE carrier aggregation antenna of the present invention, from figure 3, it can be seen that antenna low-frequency range
LTE low frequency part is completely covered in curve S11, and LTE HFS is completely covered in antenna high band curve S22.In addition, this
The low-frequency range of scheme and the isolation of high band are very good, are better than -43dB in low frequency part isolation, HFS isolation is excellent
In -27dB.Fig. 4 is the antenna efficiency figure of LTE carrier aggregation antenna low-frequency range of the present invention, and Fig. 5 is LTE carrier aggregation day of the present invention
The antenna efficiency figure of line high band, it can be seen that this programme meets requirement of the antenna to radiation efficiency from Fig. 4 and Fig. 5.Fig. 3 is extremely
Fig. 5 shows that the antenna system of the proposition of this programme disclosure satisfy that requirement in required various aspects.Fig. 6 is LTE of the present invention
The high band return loss of antenna is with the inductance change curve in bandpass filter, and according to different inductance value L, (L is difference
L0,0.7*L0,0.0*L0,1.4*L0) return loss of LTE carrier aggregation antenna is tested, wherein L0 is bandpass filtering
The optimal inductance value of inductance in device.From fig. 6 it can be seen that effect of the inductance value to high band is very big.If inductance value is relative
Excessive or too small in optimum value, the high band of antenna is simultaneously unsatisfactory for LTE high frequency requirements.Only when inductance value is suitable, antenna
High band could meet design requirement very well.However, influence of the above-mentioned bandpass filter to high frequency is very big, the influence to low frequency
It can be ignored.Therefore, high band and the simultaneously match of low-frequency range can be realized by bandpass filter, so can realize
The LTE outer carrier aggregation of band.
In summary, the present invention it is a kind of be used for metal framework portable set LTE carrier aggregation antenna, using
Antenna headroom area sets parallel the first current feed department and the second current feed department, bandpass filter, and the first current feed department supports low frequency frequency
Section, the second current feed department support high-frequency band, and the first current feed department and the second current feed department are respectively by with filtering or duplexer functionality
Low frequency matching module and high frequency matching module be connected with radiating principal；Separately directly it is used as spoke by the use of the second framework of metal framework
Main body is penetrated, without designing additional radiation agent structure, its advantage is as follows：
1st, the antenna system of this programme is not only supported with interior LTE carrier aggregation, and can support to gather with outer LTE carrier waves
Close, and existing most of LTE antenna system is only capable of supporting in band (under the conditions of the single feed without using switch designs)
LTE carrier aggregation, it can not support with outer LTE carrier aggregation.
2nd, this programme supports that the structure with outer LTE carrier aggregation is to use two feed ends, and the first feed end supports 1GHz
Following frequency, and the second feed end supports more than 1.7GHz frequency.
3rd, this programme employs a bandpass filter for acting on high band, can realize to high band performance improvement
In the case of the impedance matching that is synchronized to low-frequency range and high band simultaneously.
4th, this programme can save cost and easily implement using its metal framework as whole antenna radiator.
5th, this programme is simple in construction, although and using metal framework as the unique radiant body of antenna in iPhone 6, and
And need that low-frequency range is divided into multiple frequency sub-band using switch, and can not only support the LTE carrier aggregation in band to prop up
Hold the LTE carrier aggregation outside band, while switched because it using so also more difficult band support 28.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
The equivalents that bright specification and accompanying drawing content are made, or the technical field of correlation is directly or indirectly used in, similarly include
In the scope of patent protection of the present invention.
Claims (6)
1. a kind of be used for the LTE carrier aggregation antenna with metal framework portable set, including housing, earth plate, metal frame
Frame and antenna module, the earth plate are placed in housing, and the metal framework is fixed on the surrounding side wall of housing, the gold
Accommodating cavity is provided between category base of frame and earth plate, it is characterised in that
Symmetrically offer the first gap and the second gap on the metal framework, first gap and the second gap are by metal
Framework is divided into frame epimere and frame hypomere, and antenna headroom area is formed between the frame hypomere and earth plate；
The antenna module include radiating principal, the first current feed department, the second current feed department, bandpass filter, have filtering or duplex
The low frequency matching module and high frequency matching module of device function, the radiating principal are frame hypomere, first current feed department with
And second current feed department be respectively positioned in antenna headroom area and the first current feed department is parallel to each other with the second current feed department, first current feed department
It is connected by low frequency matching module with radiating principal, second current feed department is connected by high frequency matching module with radiating principal；
One end of the bandpass filter is connected with radiating principal, and the other end of the bandpass filter extends to earth plate.
2. according to claim 1 be used for the LTE carrier aggregation antenna with metal framework portable set, its feature exists
In offering the first gap on the left side wall of the metal framework, the second gap, and offered on the right side wall of metal framework
One gap is close to metal framework bottom position with the second gap.
3. according to claim 1 be used for the LTE carrier aggregation antenna with metal framework portable set, its feature exists
Offer the first gap and the second gap in the bottom of, the metal framework, and the first gap and the second gap respectively close to
Metal left side wall and right side wall.
4. according to claim 1 be used for the LTE carrier aggregation antenna with metal framework portable set, its feature exists
In the bandpass filter includes the electric capacity and inductance of concatenation, and bandpass filter is operated in LTE high band.
5. it is used for the LTE carrier aggregation antenna with metal framework portable set according to claim any one of 1-4,
Characterized in that, also including the USB interface for being arranged at antenna headroom area, the USB interface, which is located in metal framework bottom, to hang down
On line, and USB interface is connected with earth plate.
6. according to claim 5 be used for the LTE carrier aggregation antenna with metal framework portable set, its feature exists
In the low-frequency range that first current feed department is supported is less than 1GHz frequencies, and the high-frequency range that second current feed department is supported is
More than 1.7GHz frequencies.
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| CN201410709080.8A CN104485512B (en) | 2014-11-28 | 2014-11-28 | For the LTE carrier aggregation antenna with metal framework portable set |
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| CN203466292U (en) * | 2013-08-27 | 2014-03-05 | 上海安费诺永亿通讯电子有限公司 | Multi-frequency antenna suitable for mobile terminal having metal frame structure |
| CN203747027U (en) * | 2013-12-24 | 2014-07-30 | 上海安费诺永亿通讯电子有限公司 | All-metal mobile terminal double-slit antenna |
| CN204348912U (en) * | 2014-11-28 | 2015-05-20 | 深圳市信维通信股份有限公司 | For having the LTE carrier aggregation antenna of metal framework portable set |
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| KR101334812B1 (en) * | 2011-04-14 | 2013-11-28 | 삼성전자주식회사 | Antenna device for portable terminal |
| CN103117452B (en) * | 2013-02-07 | 2015-11-04 | 上海安费诺永亿通讯电子有限公司 | A kind of novel LTE terminal antenna |
| TWI531122B (en) * | 2013-04-24 | 2016-04-21 | 宏碁股份有限公司 | Communication device |
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| CN102893452A (en) * | 2010-06-18 | 2013-01-23 | 索尼爱立信移动通讯有限公司 | Two port antennas with separate antenna branches including respective filters |
| CN203466292U (en) * | 2013-08-27 | 2014-03-05 | 上海安费诺永亿通讯电子有限公司 | Multi-frequency antenna suitable for mobile terminal having metal frame structure |
| CN203747027U (en) * | 2013-12-24 | 2014-07-30 | 上海安费诺永亿通讯电子有限公司 | All-metal mobile terminal double-slit antenna |
| CN204348912U (en) * | 2014-11-28 | 2015-05-20 | 深圳市信维通信股份有限公司 | For having the LTE carrier aggregation antenna of metal framework portable set |
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| CN104485512A (en) | 2015-04-01 |
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