CN106356632A - Active antenna system and mobile terminal - Google Patents
Active antenna system and mobile terminal Download PDFInfo
- Publication number
- CN106356632A CN106356632A CN201610825222.6A CN201610825222A CN106356632A CN 106356632 A CN106356632 A CN 106356632A CN 201610825222 A CN201610825222 A CN 201610825222A CN 106356632 A CN106356632 A CN 106356632A
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- CN
- China
- Prior art keywords
- antenna system
- radiant body
- active antenna
- duplexer
- frequency range
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
- H01Q5/328—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors between a radiating element and ground
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
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- Transceivers (AREA)
Abstract
The invention discloses an active antenna system and a mobile terminal. The system comprises an irradiator, the irradiator is divided to a first region and a second region by an antenna feed point on the irradiator. The system further comprises an adjustable capacitor of which the first end is connected with the irradiator of the first region, the second end is connected to the ground and the control end is connected with a communication software module; an antenna switch of which N first ends are mutually connected, the common end is connected with the irradiator of the second region, the second end is directly connected to the ground or connected to the ground through a first inductor and/or a first capacitor, and the control end is connected with the communication software module; and the communication software module connected with a radio frequency receiving-transmitting module. The active antenna system is capable of automatically switching the work frequency bands, and effectively broadening the frequency band supported by the irradiator. While only the metal appearance of the mobile terminal is used as the irradiator, the additional metal routing does not need to be added, the space occupation of the antenna is effectively reduced, the space utilization rate of the inner structure of the mobile terminal is improved, and the process cost is reduced.
Description
Technical field
The present invention relates to antenna technical field, more particularly to a kind of active antenna system and mobile terminal.
Background technology
Antenna system of the prior art is usually passive antenna system, if mobile terminal is metal appearance, passive sky
Linear system system can be using outward appearance metal as radiant body, but because mobile terminal once designs, metal appearance also determines that, then
The working frequency range of passive antenna system also determines that, thus lead to passive antenna system support frequency range relatively fewer it is difficult to
Meet the demand of mobile terminal whole world frequency range, had in prior art by increase extra metal routing be used as radiant body Lai
Solve above-mentioned technical problem although than only using outward appearance metal as more than working frequency range during radiant body, but sky in general
The working frequency range of linear system system is still less, and cannot flexibly adjust the working frequency range of antenna system, also can increase structure simultaneously
Space and process costs.
Therefore, a kind of scheme solving above-mentioned technical problem how is provided to be that those skilled in the art need to solve at present
Technical problem.
Content of the invention
It is an object of the invention to provide a kind of active antenna system, on the one hand, can automatically switch working frequency range, effectively
Widen the frequency range of radiant body support；On the other hand, when only using the metal appearance of mobile terminal as radiant body, need not increase
Extra metal routing, efficiently reduces antenna and takes up room, and improves the internal structural space utilization rate of mobile terminal, fall
Low process costs；It is a further object of the present invention to provide a kind of mobile terminal including above-mentioned active antenna system.
For solving above-mentioned technical problem, the invention provides a kind of active antenna system, this system includes radiant body, described
Radiant body is connected with radio-frequency (RF) receiving and transmission module by feeder, and described radiant body is divided by the antenna feed point on described radiant body
For first area and second area, this system also includes:
First end is connected with the radiant body of described first area, the second end is grounded, control end is connected with communications software modules
Tunable capacitor；
N first end is connected with each other, its common port is connected with the radiant body of described second area, the second end is directly grounded or
Person passes through the duplexer that the first inductance and/or the first capacity earth, control end are connected with described communications software modules, and n is just
Integer；
The described communications software modules being connected with described radio-frequency (RF) receiving and transmission module, described communications software modules are used for described penetrating
Frequency transceiver module detect the working frequency range of described radiant body inconsistent with outer net frequency range when, receive described radio-frequency (RF) receiving and transmission module and send out
The FM signal sent, and correspondingly adjust the capacitance of tunable capacitor and/or n described duplexer according to described FM signal
On off state is making the working frequency range of described active antenna system consistent with described outer net frequency range.
Preferably, described correspondingly adjust the capacitance of tunable capacitor according to described FM signal and/or n described antenna is opened
Close on off state process particularly as follows:
The appearance of the tunable capacitor corresponding with described outer net frequency range is searched according to described FM signal from default truth table
Value and the on off state of n described duplexer, and the capacitance that correspondingly adjusts tunable capacitor according to this and/or n described
The on off state of duplexer.
Preferably, this active antenna system also includes:
First end is connected with the radiant body of described second area, the second end ground connection, for reducing n described duplexer
Second inductance of parasitic capacitance and/or the second electric capacity.
Preferably, n described duplexer is 2xspst.
Preferably, each described duplexer is single-pole double-throw switch (SPDT).
Preferably, the length of described radiant body is 60-100mm.
Preferably, described tunable capacitor and the distance of described antenna feed point are 10mm.
Preferably, described n duplexer and the distance of described antenna feed point are 15-20mm.
For solving above-mentioned technical problem, present invention also offers a kind of mobile terminal, including radio-frequency (RF) receiving and transmission module, also include
Active antenna system as described in any of the above-described.
The invention provides a kind of active antenna system and mobile terminal, active device adjustable electric is set in first area
Hold, be directly grounded in second area setting n or opened by the active device antenna of the first inductance and/or the first capacity earth
Close.In actual applications, first area can be mainly used to the low-frequency range working region as antenna system, tunable capacitor because
For being continuously adjustable, can be long by adjusting the surface current that the capacitance of itself indirectly adjusts the radiant body of first area
Degree, and then adjust the low-frequency range of radiant body；Second area can be mainly used to the final draft band operation area as antenna system
Domain, n duplexer can not only be by switching on-off the surface current length of the radiant body changing second area and then right
Because the Mid Frequency of antenna system and high band are switched over moreover it is possible to pass through to change first being connected with the radiant body of second area
The number of inductance and/or the first electric capacity is adjusting the surface current length of the radiant body of second area, and then adjusts radiant body
Medium-high frequency section.Further, since first area and second area are to share a radiant body and antenna feed point, therefore, in adjustment
Tunable capacitor and n duplexer can be adjusted during the working frequency range of radiant body simultaneously.
To sum up, the present invention can when outer net frequency range changes, neatly pass through adjust tunable capacitor capacitance and/or
The conducting of n described duplexer or turn off and to make the working frequency range of active antenna system consistent with described outer net frequency range, one
Aspect, can automatically switch working frequency range, has effectively widened the frequency range of radiant body support；On the other hand, when only with moving eventually
When the metal appearance at end is as radiant body, extra metal routing need not be increased, efficiently reduce antenna and take up room, improve
The internal structural space utilization rate of mobile terminal, reduces process costs.
Brief description
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, below will be to institute in prior art and embodiment
Need use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only the present invention some enforcement
Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also obtain according to these accompanying drawings
Obtain other accompanying drawings.
A kind of structural representation of active antenna system that Fig. 1 provides for the present invention；
Fig. 2 is the schematic diagram of the corresponding reflection coefficient of 8 kinds of typical mode of operation of active antenna system that the present invention provides.
Specific embodiment
It is an object of the invention to provide a kind of active antenna system, on the one hand, can automatically switch working frequency range, effectively
Widen the frequency range of radiant body support；On the other hand, when only using the metal appearance of mobile terminal as radiant body, need not increase
Extra metal routing, efficiently reduces antenna and takes up room, and improves the internal structural space utilization rate of mobile terminal, fall
Low process costs；It is a further object of the present invention to provide a kind of mobile terminal including above-mentioned active antenna system.
Purpose, technical scheme and advantage for making the embodiment of the present invention are clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described it is clear that described embodiment is
The a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment being obtained under the premise of not making creative work, broadly falls into the scope of protection of the invention.
Refer to Fig. 1, a kind of structural representation of active antenna system that Fig. 1 provides for the present invention, this system includes spoke
Beam 1, radiant body 1 is connected with radio-frequency (RF) receiving and transmission module by feeder, and the antenna feed point on radiant body 1 is by radiant body 1
It is divided into first area and second area, this system also includes:
First end is connected with the radiant body of first area, second end ground connection, control end be connected with communications software modules 4 can
Adjust electric capacity 2；
It should be noted that because tunable capacitor 2 is continuously adjustable, first area can be mainly used to as antenna
The low-frequency range working region of system, second area is mainly used to the final draft band operation region as antenna system, because low
The surface current length of the corresponding radiant body of frequency range is long, and the surface current length of the corresponding radiant body of medium-high frequency section compares
Short, then generally first area is longer than second area.
Specifically, tunable capacitor 2 here is multistage tunable capacitor.Communications software modules 4 can be according to radio-frequency receiving-transmitting mould
The radiofrequency signal that block sends is adjusted to multistage tunable capacitor.
N first end is connected with each other, and its common port is connected with the radiant body of second area, the second end is directly grounded or logical
Cross the duplexer 3 that the first inductance and/or the first capacity earth, control end are connected with communications software modules 4, n is positive integer；
Specifically, duplexer 3 here has n, wherein it is possible to there be n1 to be directly grounded, n2 is passed through the first inductance
Ground connection, n3 by the first capacity earth, n4 the first inductance by series connection and the first capacity earth, wherein, n1+n2+n3+
N4=n.Here the concrete numerical value of n1, n2, n3 and n4 is determined according to practical situation, and here of the present invention is not particularly limited.
Specifically, communications software modules 4 can be according to the radiofrequency signal of radio-frequency (RF) receiving and transmission module transmission to n duplexer 3
In how many switch off, how many switch closures are controlled.
The communications software modules 4 being connected with radio-frequency (RF) receiving and transmission module, communications software modules 4 are used for when radio-frequency (RF) receiving and transmission module detection
To radiant body 1 working frequency range and outer net frequency range inconsistent when, receive the FM signal that radio-frequency (RF) receiving and transmission module sends, and according to adjusting
Frequency signal correspondingly adjusts the capacitance of tunable capacitor 2 and/or the on off state of n duplexer 3 to make active antenna system
Working frequency range is consistent with outer net frequency range.
Specifically, radio-frequency (RF) receiving and transmission module can detect outer net frequency range in real time, when working frequency range radiant body 1 is detected and outward
When net frequency range is inconsistent, radio-frequency (RF) receiving and transmission module can send FM signal to communications software modules 4, receive radio-frequency (RF) receiving and transmission module and send
FM signal, when outer net frequency range is low-frequency range, communications software modules 4 can by adjust the capacitance of tunable capacitor 2 come indirect
The radiant body of adjustment first area surface current length, and then adjust the low-frequency range of radiant body 1 so that active antenna system
Working frequency range consistent with outer net frequency range.When outer net frequency range is medium-high frequency section, communications software modules 4 can be by adjusting n sky
The on off state of wiretap 3 indirectly to adjust the surface current length of the radiant body of second area, and then adjusts radiant body 1
Medium-high frequency section is so that the working frequency range of active antenna system is consistent with outer net frequency range.
In addition, because first area and second area are to share a radiant body 1 and antenna feed point, therefore, utilizing
When tunable capacitor 2 adjusts low-frequency range, the change of the capacitance of tunable capacitor 2 also can produce certain impact by centering high band, in the same manner,
When the on off state using n duplexer 3 of adjustment adjusts medium-high frequency section, the on off state of n duplexer 3 also can be right
Low-frequency range produces certain impact.Therefore, in order to improve degree of regulation, can be simultaneously when adjusting the working frequency range of radiant body 1
Tunable capacitor 2 and n duplexer 3 are adjusted.
Preferably, n duplexer 3 is 2xspst.
Preferably, each duplexer 3 is single-pole double-throw switch (SPDT).
Certainly, duplexer 3 here can also select other kinds of switch, and here of the present invention does not do special limit
Fixed, determined according to practical situation.
Preferably, the capacitance of tunable capacitor 2 and/or opening of n duplexer 3 are correspondingly adjusted according to FM signal
The process of off status particularly as follows:
Search the capacitance of tunable capacitor 2 corresponding with outer net frequency range and n according to FM signal from default truth table
The on off state of individual duplexer 3, and the opening of the capacitance that correspondingly adjusts tunable capacitor 2 according to this and/or n duplexer 3
Off status.
It is understood that default truth table here establishes in advance, with n duplexer 3 it is below
It is described as a example 2xspst, wherein, spst opens and represented with 1, spst closes and represented with 0, specifically, refer to table 1:
Table 1 antenna system different working modes table
The active antenna system that the present invention provides as can be seen from Table 1 has multiple combination state, can cover mobile whole
The required low frequency in end and medium-high frequency, and software real-time control continuously adjustabe can be realized, meet the need of terminal various standard communication
Ask.
Refer to Fig. 2, Fig. 2 is 8 kinds of typical mode of operation corresponding reflection system of the active antenna system that the present invention provides
The schematic diagram of number.
In Fig. 2,11-18 represents the mode of operation 1- mode of operation 8 in table 1 respectively.
Preferably, this active antenna system also includes:
First end is connected with the radiant body of second area, the second end is grounded, the parasitic electricity for reducing n duplexer 3
The second inductance holding and/or the second electric capacity.
Specifically, the second inductance here and/or the second electric capacity can be close to n duplexer 3 and place, for reducing
The parasitic capacitance of switch itself, and adjust capacitive or the perception of antenna system.
Preferably, the length of radiant body 1 is 60-100mm.
Preferably, tunable capacitor 2 and the distance of antenna feed point are 10mm.
Preferably, the distance of n duplexer 3 and antenna feed point is 15-20mm.
Certainly, the present invention is for the distance between the concrete length of radiant body 1, tunable capacitor 2 and antenna feed point and sky
Wiretap 3 is not all particularly limited with the distance of antenna feed point, is determined according to practical situation.
The invention provides a kind of active antenna system, active device tunable capacitor is set in first area, in the secondth area
Domain arranges n and is directly grounded or the active device duplexer by the first inductance and/or the first capacity earth.Answer actual
With in, first area can be mainly used to the low-frequency range working region as antenna system, tunable capacitor is because be continuously may be used
Adjust, can indirectly adjust the surface current length of the radiant body of first area by adjusting the capacitance of itself, and then adjust
The low-frequency range of whole radiant body；Second area can be mainly used to the final draft band operation region as antenna system, n antenna
Switch can not only pass through to switch on-off the surface current length of the radiant body changing second area, and then to due to aerial system
The Mid Frequency of system and high band switch over moreover it is possible to by change the first inductance of being connected with the radiant body of second area and/or
The number of the first electric capacity is adjusting the surface current length of the radiant body of second area, and then adjusts the medium-high frequency section of radiant body.
Further, since first area and second area are to share a radiant body and antenna feed point, therefore, in the work of adjustment radiant body
Make can tunable capacitor and n duplexer be adjusted during frequency range simultaneously.
To sum up, the present invention can when outer net frequency range changes, neatly pass through adjust tunable capacitor capacitance and/or
The conducting of n described duplexer or turn off and to make the working frequency range of active antenna system consistent with described outer net frequency range, one
Aspect, can automatically switch working frequency range, has effectively widened the frequency range of radiant body support；On the other hand, when only with moving eventually
When the metal appearance at end is as radiant body, extra metal routing need not be increased, efficiently reduce antenna and take up room, improve
The internal structural space utilization rate of mobile terminal, reduces process costs.
For solving above-mentioned technical problem, present invention also offers a kind of mobile terminal, including radio-frequency (RF) receiving and transmission module, also include
Active antenna system as described above.
The introduction of the active antenna system in a kind of mobile terminal providing for the present invention is referring in particular to above-mentioned antenna
System embodiment, the present invention will not be described here.
It should be noted that in this manual, such as first and second or the like relational terms are used merely to one
Individual entity or operation are made a distinction with another entity or operation, and not necessarily require or imply these entities or operate it
Between there is any this actual relation or order.And, term " inclusion ", "comprising" or its any other variant are intended to
Cover comprising of nonexcludability, so that including a series of process of key elements, method, article or equipment not only include those
Key element, but also include other key elements being not expressly set out, or also include for this process, method, article or set
Standby intrinsic key element.In the absence of more restrictions, the key element that limited by sentence "including a ..." it is not excluded that
Also there is other identical element in process, method, article or the equipment including described key element.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.
Multiple modifications to these embodiments will be apparent from for those skilled in the art, as defined herein
General Principle can be realized without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
It is not intended to be limited to the embodiments shown herein, and be to fit to and principles disclosed herein and features of novelty phase one
The scope the widest causing.
Claims (9)
1. a kind of active antenna system, this system includes radiant body, and described radiant body passes through feeder and radio-frequency (RF) receiving and transmission module
Connect it is characterised in that described radiant body is divided into first area and second area by the antenna feed point being located on described radiant body,
This system also includes:
First end is connected with the radiant body of described first area, second end ground connection, control end be connected with communications software modules can
Adjust electric capacity；
N first end is connected with each other, and its common port is connected with the radiant body of described second area, the second end is directly grounded or logical
Cross the duplexer that the first inductance and/or the first capacity earth, control end are connected with described communications software modules, n is positive integer；
The described communications software modules being connected with described radio-frequency (RF) receiving and transmission module, described communications software modules are used for receiving when described radio frequency
Send out module detect the working frequency range of described radiant body inconsistent with outer net frequency range when, receive what described radio-frequency (RF) receiving and transmission module sent
FM signal, and the capacitance of tunable capacitor and/or the switch of n described duplexer is correspondingly adjusted according to described FM signal
State is making the working frequency range of described active antenna system consistent with described outer net frequency range.
2. active antenna system as claimed in claim 1 is it is characterised in that described correspondingly adjusted according to described FM signal
The process of the on off state of the capacitance of tunable capacitor and/or n described duplexer particularly as follows:
According to described FM signal search from default truth table the capacitance of the tunable capacitor corresponding with described outer net frequency range with
And the on off state of n described duplexer, and the capacitance that correspondingly adjusts tunable capacitor according to this and/or n described antenna
The on off state of switch.
3. active antenna system as claimed in claim 1 is it is characterised in that this active antenna system also includes:
First end is connected with the radiant body of described second area, the second end is grounded, the parasitism for reducing n described duplexer
Second inductance of electric capacity and/or the second electric capacity.
4. active antenna system as claimed in claim 1 is it is characterised in that n described duplexer is 2xspst.
5. active antenna system as claimed in claim 1 is it is characterised in that each described duplexer is opened for single-pole double throw
Close.
6. the active antenna system as described in any one of claim 1-5 is it is characterised in that the length of described radiant body is 60-
100mm.
7. active antenna system as claimed in claim 6 it is characterised in that described tunable capacitor and described antenna feed point away from
From for 10mm.
8. active antenna system as claimed in claim 7 is it is characterised in that described n duplexer and described antenna feed point
Distance be 15-20mm.
9. a kind of mobile terminal, including radio-frequency (RF) receiving and transmission module it is characterised in that also including as described in any one of claim 1-8
Active antenna system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610825222.6A CN106356632A (en) | 2016-09-14 | 2016-09-14 | Active antenna system and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610825222.6A CN106356632A (en) | 2016-09-14 | 2016-09-14 | Active antenna system and mobile terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106356632A true CN106356632A (en) | 2017-01-25 |
Family
ID=57857982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610825222.6A Pending CN106356632A (en) | 2016-09-14 | 2016-09-14 | Active antenna system and mobile terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106356632A (en) |
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| CN107369886A (en) * | 2017-09-01 | 2017-11-21 | 深圳传音制造有限公司 | Antenna for mobile phone and mobile phone |
| CN109921178A (en) * | 2019-02-19 | 2019-06-21 | 深圳市和盈互联科技有限公司 | Mobile terminal antenna device |
| CN111029732A (en) * | 2019-12-31 | 2020-04-17 | 上海摩勤智能技术有限公司 | Antenna device and handheld communication equipment |
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Application publication date: 20170125 |