CN106301304A - A kind of antenna switch circuit and radio circuit - Google Patents
A kind of antenna switch circuit and radio circuit Download PDFInfo
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- CN106301304A CN106301304A CN201610674775.6A CN201610674775A CN106301304A CN 106301304 A CN106301304 A CN 106301304A CN 201610674775 A CN201610674775 A CN 201610674775A CN 106301304 A CN106301304 A CN 106301304A
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- outfan
- matching capacitance
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- conducting
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/002—Switching arrangements with several input- or output terminals
- H03K17/007—Switching arrangements with several input- or output terminals with several outputs only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
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Abstract
The invention discloses a kind of antenna switch circuit and radio circuit.This antenna switch circuit includes: switch element, and switch element includes an input, multiple outfan and is arranged on the input node connected with input within switch element and the multiple output nodes that are connected corresponding with multiple outfans；Control module, is coupled to switch element, turns on in multiple output nodes for controlling input node and controls adjacent output node conducting；Turning circuit, is coupled to the outfan of switch element, for controlling outfan predetermined high-frequency range in the mutual conduction corresponding with the output node of conducting；Matching capacitance module, is coupled to the outfan of switch element, and wherein, matching capacitance module includes that at least one matching capacitance, matching capacitance are connected with the outfan of mutual conduction or independent outfan.By the way, the present invention can reduce the power attenuation of switched antenna circuit, and then promotes the performance of the antenna being connected with switched antenna circuit.
Description
Technical field
The present invention relates to field of mobile terminals, particularly relate to a kind of antenna switch circuit and radio circuit.
Background technology
Along with popularizing of LTE (Long Term Evolution, Long Term Evolution) technology, mobile terminal requires the frequency supported
Section is more and more, more and more higher to the performance requirement of antenna.Due to the broader bandwidth of LTE, in order to obtain good antenna
Join, generally can increase duplexer and the frequency response of matching capacitance adjustment antenna, it is thus achieved that good antenna performance.
It is the theory diagram of radio circuit in existing mobile terminal please also refer to Fig. 1, Fig. 1.As it is shown in figure 1, radio frequency
Front end includes main collection antenna ANT1, diversity antenna ANT2, duplexer SP4T, multiple matching capacitance 10, radio-frequency front-end 11, filtering
Device 12, power amplifier 13, signal transceiver 14 and modem 15.
Main collection antenna ANT1 is used for launching signal and receiving high-frequency signal, and diversity antenna ANT2 is used for receiving signal.Wherein,
When main collection antenna ANT1 launches signal, the frequency range that processor (not shown) can be launched according to main collection antenna ANT1, control antenna
Outfans different in switch SP4T turns on to mate different matching capacitance from input, thus adjusts main collection antenna ANT1's
Frequency response, it is thus achieved that good antenna performance.It addition, radio-frequency front-end 11, wave filter 12, power amplifier 13, signal transceiver
14 and modem 15 use existing connected mode and working method, for the sake of brief, do not repeat them here.
As it is shown in figure 1, in the prior art, duplexer SP4T the most only allows input and an outfan to turn on shape
Becoming a switch ways, the impedance of this switch ways is fixing, and this impedance magnitude determines the power damage of duplexer SP4T
Consumption.Wherein, the impedance of duplexer SP4T breaker in middle path is the biggest, and duplexer SP4T loss is the biggest, main collection antenna ANT1
Can be the poorest, the signal quality of transmitting is the poorest.Meanwhile, duplexer SP4T loss is the biggest, and the power consumption of mobile terminal is the biggest.
Summary of the invention
The technical problem that present invention mainly solves is to provide a kind of antenna switch circuit and radio circuit, it is possible to reduce antenna
The power attenuation of on-off circuit, and then promote antenna performance.
For solving above-mentioned technical problem, the technical scheme that the present invention uses is: provide a kind of antenna switch circuit, should
Circuit includes: switch element, switch element include an input, multiple outfan and be arranged within switch element with defeated
Enter input node and multiple output nodes of connection corresponding with multiple outfans that end connects；Control module, is coupled to switch
Element, turns on in multiple output nodes for controlling input node and controls adjacent output node conducting；Lead
Circuit passband, is coupled to the outfan of switch element, for controlling the outfan corresponding with the output node of conducting at predetermined high frequency
In the range of mutual conduction；Matching capacitance module, is coupled to the outfan of switch element, and wherein, matching capacitance module includes at least
One matching capacitance, this matching capacitance is connected with the outfan of mutual conduction or independent outfan.
Wherein, turning circuit includes that multiple conducting electric capacity, each conducting electric capacity are connected on corresponding with the output node turned on
Adjacent two outfan between, so that multiple outfans of switch element are turned on.
Wherein, switch element includes an input, an input node, four outfans and four output nodes, and four defeated
Going out end and be respectively the first outfan, the second outfan, the 3rd outfan and the 4th outfan, four output nodes are respectively first
Output node, the second output node, the 3rd output node and the 4th output node.
Wherein, defeated for controlling the first output node, the second output node, the 3rd output node and the 4th when control module
During egress conducting: turning circuit includes the first conducting electric capacity, the second conducting electric capacity and the 3rd conducting electric capacity, and wherein, first leads
Energising is held and is connected with the first outfan and the second outfan respectively, and the second conducting electric capacity exports with the second outfan and the 3rd respectively
End connects, and the 3rd conducting electric capacity is connected with the 3rd outfan and the 4th outfan respectively；Matching capacitance module includes the first coupling
Electric capacity, wherein, one end of the first matching capacitance is with the first outfan, the second outfan, the 3rd outfan or the 4th outfan even
Connect, the other end ground connection of the first matching capacitance.
Wherein, when control module is for controlling the first output node and the conducting of the second output node and the 3rd output joint
When point and the conducting of the 4th output node: turning circuit includes the first conducting electric capacity and the second conducting electric capacity, wherein, the first electric conduction
Holding and be connected with the first outfan and the second outfan respectively, the second conducting capacity connects with the 3rd outfan and the 4th outfan respectively
Connect；Matching capacitance module includes the first matching capacitance and the second matching capacitance, and wherein, one end of the first matching capacitance is defeated with first
Going out end or the second outfan connects, one end of the second matching capacitance is connected with the 3rd outfan or the 4th outfan, the first coupling
The other end ground connection of electric capacity and the second matching capacitance.
Wherein, when control module is for controlling the first outfan and the conducting of the second outfan: turning circuit includes first
Conducting electric capacity, wherein, the first conducting electric capacity is connected with the first outfan and the second outfan respectively；Matching capacitance module includes
One matching capacitance, the second matching capacitance and the 3rd matching capacitance, wherein, one end of the first matching capacitance and the first outfan or the
Two outfans connect, and one end of the second matching capacitance is connected with the 3rd outfan, one end of the 3rd matching capacitance and the 4th output
End connects, the first matching capacitance, the second matching capacitance, the other end ground connection of the 3rd matching capacitance.
Wherein, predetermined high-frequency range is 700MHz～3GHz.
Wherein, during control module is arranged on switch element.
Wherein, when the quantity of matching capacitance is multiple, the capacitance of multiple matching capacitance is different.
For solving above-mentioned technical problem, another technical solution used in the present invention is: providing a kind of radio circuit, this is penetrated
Frequency circuit includes antenna and the antenna switch circuit as above being connected with antenna.
The invention has the beneficial effects as follows: the antenna switch circuit of the present invention and radio circuit control switch by control module
Internal adjacent output nodes conducting, and control the outfan corresponding with the output node of conducting predetermined by turning circuit
Mutual conduction in high-frequency range so that variable connector branch road is parallel with one another to form a way switch branch road in predetermined high-frequency range
Thus decrease the conduction impedance of switching branches, and then reduce the power attenuation of antenna switch circuit, improve the property of antenna
Energy.
Accompanying drawing explanation
Fig. 1 is the theory diagram of radio circuit in existing mobile terminal；
Fig. 2 is the structural representation of the antenna switch circuit of first embodiment of the invention；
Fig. 3 is the structural representation of the antenna switch circuit of second embodiment of the invention；
Fig. 4 is the structural representation of the antenna switch circuit of third embodiment of the invention；
Fig. 5 is the structural representation of the antenna switch circuit of fourth embodiment of the invention；
Fig. 6 is the structural representation of the radio circuit of the embodiment of the present invention.
Detailed description of the invention
Some vocabulary is employed to censure specific assembly in the middle of specification and claims.Art
Technical staff is it is to be appreciated that hardware manufacturer may call same assembly with different nouns.This specification and right
Claim is not using the difference of title as in the way of distinguishing assembly, but using assembly difference functionally as the standard distinguished
Then." including " mentioned in description and claim in the whole text is open term, thus should be construed to " include but not
It is defined in ".Additionally, " coupling " word includes any directly and indirectly electrical connection at this.Therefore, if described in literary composition
One device is coupled to the second device, then represent first device and can directly be electrically connected in the second device, or through other device or
Connection means are indirectly electrically connected to the second device.
Fig. 2 is the structural representation of the antenna switch circuit of first embodiment of the invention.As in figure 2 it is shown, duplexer is electric
Road 20 includes switch element 21, control module 22, turning circuit 23 and matching capacitance module 24.
Switch element 21 includes an input, multiple outfan and is arranged on connecting with input within switch element 21
The input node connect and multiple output nodes of connection corresponding with multiple outfans.Wherein, the input of switch element 21 with
Antenna (not shown) connects, and is used for receiving armed high-frequency signal.Wherein, when multiple output nodes are individually present, switch
The branch road formed when the input node in element 21 and a conducting in multiple output node is a way switch branch road.
Control module 22 is coupled to switch element 21, for controlling input node and a conducting in multiple output nodes
And control adjacent output node conducting.Preferably, control module 22 is arranged in switch element 21, respectively with switch element
The input node of 21 and the connection of multiple output node.
Turning circuit 23 is coupled to the outfan of switch element 21, for controlling the output corresponding with the output node of conducting
End mutual conduction in predetermined high-frequency range.Preferably, predetermined high-frequency range is 700MHz～3GHz.Preferably, turning circuit
23 include multiple conducting electric capacity, each conducting electric capacity be connected on adjacent two outfan corresponding with the output node turned on it
Between, so that multiple outfans of switch element 21 are turned on.Wherein, in the present embodiment, conducting electric capacity is the electric capacity that capacity is bigger,
It is equivalent to short circuit when high frequency namely in predetermined high-frequency range.It will be understood to those skilled in the art that when multiple outfans
Conducting and control module 22 control when corresponding multiple output nodes turn on it can be understood as variable connector branch road is parallel with one another
Thus form the switching branches that a road is new, now, the impedance that the impedance of new switching branches is equivalent to variable connector branch road is mutual
The value obtained after parallel connection, say, that the impedance of new switching branches will be greatly reduced, such that it is able to be substantially reduced duplexer
The loss of circuit.
Matching capacitance module 24 is coupled to the outfan of switch element 21, and wherein, matching capacitance module 24 includes at least one
Matching capacitance, matching capacitance is connected with the outfan of mutual conduction or independent outfan, is used for adjusting antenna in a certain frequency
Under frequency response, it is thus achieved that the good antenna performance under this frequency.Preferably, when matching capacitance is multiple, multiple
The capacitance that distribution holds is different, and wherein, the frequency of armed high-frequency signal is the highest, and the capacitance of matching capacitance is the least.
Fig. 3 is the structural representation of the antenna switch circuit of second embodiment of the invention.As it is shown on figure 3, duplexer is electric
Road 30 includes switch element 31, control module 32, turning circuit 33 and matching capacitance module 34.
Switch element 31 includes an input IN, input node in being connected with input IN, four outfans, its point
It is not the first outfan OUT1, the second outfan OUT2, the 3rd outfan OUT3, the 4th outfan OUT4, with four outfans
Four output nodes being connected respectively, it is respectively the first output node out1, the second output node out2, the 3rd output
Node out3, the 4th output node out4.Wherein, when four output nodes are individually present, input node in and the first output
The second tunnel is formed when forming first via switching branches, input node in and the second output node out2 conducting during node out1 conducting
Three-way switch branch road is formed, input node in and the when switching branches, input node in and the 3rd output node out3 conducting
Four-way switch branch road is formed during four output node out4 conductings.
Control module 32 is coupled to switch element 31, leads for controlled in input node in and four output nodes
Pass to and control adjacent output node conducting.In the present embodiment, control module 32 for control the first output node out1,
Second output node out2, the 3rd output node out3 and the 4th output node out4 mutual conduction.
Turning circuit 33 includes the first conducting electric capacity CA1, the second conducting electric capacity CA2 and the 3rd conducting electric capacity CA3.First leads
Energising is held CA1 and is connected with the first outfan OUT1 and the second outfan OUT2 respectively, and the second conducting electric capacity CA2 is defeated with second respectively
Go out to hold OUT2 and the 3rd outfan OUT3 to connect, the 3rd conducting electric capacity CA4 respectively with the 3rd outfan OUT3 and the 4th outfan
OUT4 connects.It is understood that the first conducting electric capacity CA1, the second conducting electric capacity CA2 and the 3rd conducting electric capacity CA3 are at high frequency
Time be equivalent to short circuit so that when high frequency the first outfan OUT1, the second outfan OUT2, the 3rd outfan OUT3,
Four outfan OUT4 mutual conduction.
Matching capacitance module 34 includes the first matching capacitance CB1.One end of first matching capacitance CB1 and the first outfan
OUT1, the second outfan OUT2, the 3rd outfan OUT3 or the 4th outfan OUT4 connect, another of the first matching capacitance CB1
End ground connection GND.In the present embodiment, one end of the first matching capacitance CB1 is connected with the first outfan OUT1.May be appreciated
It is, the first outfan OUT1, the second outfan OUT2, the 3rd outfan OUT3, the 4th outfan OUT4 phase mutual conductance when high frequency
It is logical, so the first matching capacitance CB1 and the first outfan OUT1, the second outfan OUT2, the 3rd outfan OUT3 or the 4th are defeated
The connection effect going out to hold OUT4 is equal to.
Wherein, the first output node out1, the second output node out2, the 3rd output node are controlled when control module 32
Out3, the 4th output node out4 conducting, and when controlling any one conducting in input node in and four output nodes,
New switching branches is approximately first via switching branches, the second way switch branch road, three-way switch branch road and four-way switch and props up
Road formation parallel with one another.Wherein, if first via switching branches, the second way switch branch road, three-way switch branch road and the 4th tunnel
The impedance of switching branches is equal, and the impedance of the newest switching branches is the 1/4 of the impedance of first via switching branches.
For changing an angle, the function of switch element 31 is become single-pole single-throw(SPST by original hilted broadsword four-throw, such that it is able to
Realize the coupling of the high-frequency signal to a kind of frequency.Wherein, compared with original hilted broadsword four-throw function, new in switch element 31
The conduction impedance of switching branches is largely reduced.
Fig. 4 is the structural representation of the antenna switch circuit of third embodiment of the invention.As shown in Figure 4, duplexer electricity
Road 40 includes switch element 41, control module 42, turning circuit 43 and matching capacitance module 44.
Switch element 41 includes an input IN, input node in being connected with input IN, four outfans, its point
It is not the first outfan OUT1, the second outfan OUT2, the 3rd outfan OUT3, the 4th outfan OUT4, with four outfans
Four output nodes being connected respectively, it is respectively the first output node out1, the second output node out2, the 3rd output
Node out3, the 4th output node out4.Wherein, when four output nodes are individually present, input node in and the first output
The second tunnel is formed when forming first via switching branches, input node in and the second output node out2 conducting during node out1 conducting
Three-way switch branch road is formed, input node in and the when switching branches, input node in and the 3rd output node out3 conducting
Four-way switch branch road is formed during four output node out4 conductings.
Control module 42 is coupled to switch element 41, leads for controlled in input node in and four output nodes
Pass to and control adjacent output node conducting.In the present embodiment, control module 42 is for controlling the first output node out1
With the second output node out2 mutual conduction, and the 3rd output node out3 and the 4th output node out4 mutual conduction.
Turning circuit 43 includes the first conducting electric capacity CA1 ' and second conducting electric capacity CA2 ', and the first conducting electric capacity CA1 ' is respectively
Be connected with the first outfan OUT1 and the second outfan OUT2, the second conducting capacity CA2 ' respectively with the 3rd outfan OUT3 and
Four outfan OUT4 connect.
Matching capacitance module 44 includes the first matching capacitance CB1 ' and the second matching capacitance CB2 '.First matching capacitance CB1 '
One end be connected with the first outfan OUT1 or the second outfan OUT2, the second matching capacitance CB2 ' one end and the 3rd outfan
The other end ground connection that OUT3 or the 4th outfan OUT4 connect, the first matching capacitance CB1 ' and the second matching capacitance CB2 '.At this
One end of in embodiment, the first matching capacitance CB1 ' one end be connected with the first outfan OUT1, the second matching capacitance CB2 ' with
3rd outfan OUT3 connects.
Wherein, the first output node out1 and the second output node out2 conducting and the 3rd are controlled when control module 42
During output node out3 and the 4th output node out4 conducting:
If control module 42 controls input node in and the first output node out1 or the second output node out2 conducting, then
New switching branches is approximately first via switching branches, the second way switch branch road formation parallel with one another.Wherein, if the first via is opened
The impedance closing branch road and the second way switch branch road is equal, and the impedance of the newest switching branches is the impedance of first via switching branches
1/2。
If control module 42 controls input node in and the 3rd output node out3 or the 4th output node out4 conducting, then
New switching branches is approximately three-way switch branch road, the formation parallel with one another of four-way switch branch road.Wherein, if three-way switch
The impedance of branch road and four-way switch branch road is equal, and the impedance of the newest switching branches is the 1/ of the impedance of three-way switch branch road
2。
For changing an angle, the function of switch element 41 is become single-pole double throw by original hilted broadsword four-throw, such that it is able to
Realize the coupling of the high-frequency signal to two kinds of different frequencies.Wherein, compared with original hilted broadsword four-throw function, in switch element 41
The conduction impedance of new double switch branch road is largely reduced.
Fig. 5 is the structural representation of the antenna switch circuit of fourth embodiment of the invention.As it is shown in figure 5, duplexer is electric
Road 50 includes switch element 51, control module 52, turning circuit 53 and matching capacitance module 54.
Switch element 51 includes an input IN, input node in being connected with input IN, four outfans, its point
It is not the first outfan OUT1, the second outfan OUT2, the 3rd outfan OUT3, the 4th outfan OUT4, with four outfans
Four output nodes being connected respectively, it is respectively the first output node out1, the second output node out2, the 3rd output
Node out3, the 4th output node out4.Wherein, when four output nodes are individually present, input node in and the first output
The second tunnel is formed when forming first via switching branches, input node in and the second output node out2 conducting during node out1 conducting
Three-way switch branch road is formed, input node in and the when switching branches, input node in and the 3rd output node out3 conducting
Four-way switch branch road is formed during four output node out4 conductings.
Control module 52 is coupled to switch element 51, leads for controlled in input node in and four output nodes
Pass to and control adjacent output node conducting.In the present embodiment, control module 52 is for controlling the first output node out1
With the second output node out2 mutual conduction.
Turning circuit 53 includes the first conducting electric capacity CA1 ", first conducting electric capacity CA1 " respectively with the first outfan OUT1 and
Second outfan OUT2 connects.
Matching capacitance module 44 includes the first matching capacitance CB1 ", the second matching capacitance CB2 " and the 3rd matching capacitance
CB3”.Wherein, the first matching capacitance CB1 " one end be connected with the first outfan OUT1 or the second outfan OUT2, the second coupling
Electric capacity CB2 " one end be connected with the 3rd outfan OUT3, the 3rd matching capacitance CB3 " one end with the 4th outfan OUT4 even
Connect, the first matching capacitance CB1 ", the second matching capacitance CB2 ", the 3rd matching capacitance CB3 " other end ground connection GND.In this enforcement
In example, the first matching capacitance CB1 " one end be connected with the first outfan OUT1.
Wherein, when control module 42 controls the first output node out1 and the second output node out2 conducting:
If control module 42 controls input node in and the first output node out1 or the second output node out2 conducting, then
New switching branches is approximately first via switching branches, the second way switch branch road formation parallel with one another.Wherein, if the first via is opened
The impedance closing branch road and the second way switch branch road is equal, and the impedance of the newest switching branches is the impedance of first via switching branches
1/2。
If control module 42 controls input node in and the 3rd output node out3, then switching branches is still the 3rd switch
Road, the impedance of switching branches keeps constant.
If control module 42 controls input node in and the 4th output node out4, then switching branches is still the 4th switch
Road, the impedance of switching branches keeps constant.
For changing an angle, the function of switch element 41 is become SP3T by original hilted broadsword four-throw, such that it is able to
Realize the coupling of the high-frequency signal to three kinds of different frequencies.Wherein, compared with original hilted broadsword four-throw function, three-way switch branch road
In the conduction impedance of a way switch branch road be largely reduced, additionally the conduction impedance of double switch branch road keeps constant.
It will be understood to those skilled in the art that in other embodiments, control module 52 can be used for controlling second
Output node out2 and the 3rd output node out3 turns on, or the 3rd output node out3 and the 4th output node out4 leads
Logical.Now, turn on electric capacity CA " it is correspondingly arranged between the second outfan OUT2 and the 3rd outfan OUT3, or conducting electric capacity
CA " it is correspondingly arranged between the 3rd outfan OUT3 and the 4th outfan OUT4, the present invention with the embodiment shown in Fig. 3 is not
Limit.
It will be understood to those skilled in the art that an input of Fig. 3, Fig. 4, Fig. 5, the switch element of four outfans
Being only for example, the present invention is not limited, and input, is different from the switch element structure of multiple outfans of four outfans
The antenna switch circuit become is the most within the scope of the present invention.
It addition, for the design simplifying circuit board, the first outfan OUT1 and second can be reserved the most simultaneously
Between outfan OUT2, the second outfan OUT2 and the 3rd outfan OUT3, the 3rd outfan OUT3 and the 4th outfan OUT4
Between three conducting electric capacity solder joints, and respectively with the first outfan OUT1, the second outfan OUT2, the 3rd outfan
The solder joint of four matching capacitance that OUT3 and the 4th outfan OUT4 connects.When actually used, select corresponding conducting electric capacity
Weld with matching capacitance, open such that it is able to realize using same circuit board can realize the antenna shown in Fig. 3, Fig. 4 and Fig. 5
Close circuit.
Fig. 6 is the structural representation of the radio circuit of the embodiment of the present invention.As shown in Figure 6, radio circuit 1 includes antenna
2 and antenna switch circuit 3.Antenna switch circuit 3 is connected with antenna 2, carries out electric capacity for the high-frequency signal sending antenna 2
It is equipped with the frequency response adjusting antenna, it is thus achieved that good antenna performance.Wherein, antenna switch circuit 3 as detailed above, for letter
For the sake of about, do not repeat them here.
Controlled in switch by control module by above-mentioned embodiment, the antenna switch circuit of the present invention and radio circuit
The adjacent output nodes conducting in portion, and control the outfan corresponding with the output node of conducting at predetermined height by turning circuit
Mutual conduction in the range of Pin so that in predetermined high-frequency range variable connector branch road parallel with one another with formed a way switch branch road from
And decrease the conduction impedance of switching branches, and then reduce the power attenuation of switch element, improve antenna performance.
The foregoing is only embodiments of the present invention, not thereby limit the scope of the claims of the present invention, every utilization is originally
Equivalent structure or equivalence flow process that description of the invention and accompanying drawing content are made convert, or are directly or indirectly used in what other were correlated with
Technical field, is the most in like manner included in the scope of patent protection of the present invention.
Claims (10)
1. an antenna switch circuit, it is characterised in that described circuit includes:
Switch element, described switch element includes an input, multiple outfan and is arranged within described switch element
With the input node that described input connects and the multiple output nodes that are connected corresponding with multiple described outfans；
Control module, is coupled to described switch element, for controlling described input node and in multiple described output nodes
Individual conducting and control the conducting of adjacent described output node；
Turning circuit, is coupled to the described outfan of described switch element, corresponding with the described output node of conducting for controlling
Described outfan mutual conduction in predetermined high-frequency range；
Matching capacitance module, is coupled to the described outfan of described switch element, and wherein, described matching capacitance module includes at least
One matching capacitance, described matching capacitance is connected with the described outfan of mutual conduction or independent described outfan.
Circuit the most according to claim 1, it is characterised in that described turning circuit includes multiple conducting electric capacity, Mei Yisuo
State conducting electric capacity to be connected between two adjacent described outfans corresponding with the described output node turned on, to open described
Close the multiple described outfan conducting of element.
Circuit the most according to claim 2, it is characterised in that described switch element include an input, an input node,
Four outfans and four output nodes, four outfans are respectively the first outfan, the second outfan, the 3rd outfan and
Four outfans, four output nodes are respectively the first output node, the second output node, the 3rd output node and the 4th output joint
Point.
Circuit the most according to claim 3, it is characterised in that when described control module is used for controlling described first output joint
When point, described second output node, described 3rd output node and described 4th output node conducting:
Described turning circuit includes the first conducting electric capacity, the second conducting electric capacity and the 3rd conducting electric capacity, wherein, described first conducting
Electric capacity is connected with described first outfan and described second outfan respectively, and described second conducting electric capacity is second defeated with described respectively
Go out end and described 3rd outfan connect, described 3rd conducting electric capacity respectively with described 3rd outfan and described 4th outfan
Connect；
Described matching capacitance module includes the first matching capacitance, and wherein, one end of described first matching capacitance is first defeated with described
Go out end, described second outfan, described 3rd outfan or described 4th outfan to connect, another of described first matching capacitance
End ground connection.
Circuit the most according to claim 3, it is characterised in that when described control module is used for controlling described first output joint
Point and described second output node conducting and described 3rd output node and described 4th output node conducting time:
Described turning circuit include the first conducting electric capacity and second conducting electric capacity, wherein, described first conducting electric capacity respectively with institute
State the first outfan and described second outfan connect, described second conducting capacity respectively with described 3rd outfan and described the
Four outfans connect；
Described matching capacitance module includes the first matching capacitance and the second matching capacitance, wherein, the one of described first matching capacitance
End is connected with described first outfan or described second outfan, one end of described second matching capacitance and described 3rd outfan
Or described 4th outfan connect, described first matching capacitance and the other end ground connection of described second matching capacitance.
Circuit the most according to claim 3, it is characterised in that when described control module is for controlling the first outfan and institute
When stating the second outfan conducting:
Described turning circuit includes the first conducting electric capacity, wherein, described first conducting electric capacity respectively with described first outfan and
Described second outfan connects；
Described matching capacitance module includes the first matching capacitance, the second matching capacitance and the 3rd matching capacitance, wherein, described first
One end of matching capacitance is connected with described first outfan or described second outfan, one end of described second matching capacitance and institute
Stating the 3rd outfan to connect, one end of described 3rd matching capacitance is connected with described 4th outfan, described first matching capacitance,
Described second matching capacitance, the other end ground connection of described 3rd matching capacitance.
Circuit the most according to claim 1, it is characterised in that described predetermined high-frequency range is 700MHz～3GHz.
Circuit the most according to claim 1, it is characterised in that described control module is arranged in described switch element.
Circuit the most according to claim 1, it is characterised in that when the quantity of described matching capacitance is multiple, Duo Gesuo
The capacitance stating matching capacitance is different.
10. a radio circuit, it is characterised in that described radio circuit include antenna and be connected with described antenna as right want
Seek the antenna switch circuit described in 1～9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610674775.6A CN106301304A (en) | 2016-08-16 | 2016-08-16 | A kind of antenna switch circuit and radio circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610674775.6A CN106301304A (en) | 2016-08-16 | 2016-08-16 | A kind of antenna switch circuit and radio circuit |
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| Publication Number | Publication Date |
|---|---|
| CN106301304A true CN106301304A (en) | 2017-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610674775.6A Pending CN106301304A (en) | 2016-08-16 | 2016-08-16 | A kind of antenna switch circuit and radio circuit |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101626222A (en) * | 2008-07-07 | 2010-01-13 | 阿尔特拉公司 | Adjustable electrical components formed from arrays of differential circuit elements |
| US20110002080A1 (en) * | 2008-02-28 | 2011-01-06 | Peregrine Semiconductor Corporation | Method and apparatus for use in digitally tuning a capacitor in an integrated circuit device |
| CN103023441A (en) * | 2012-12-06 | 2013-04-03 | 北京中科汉天下电子技术有限公司 | Bandwidth regulating method for radio frequency power amplifier and radio frequency power amplifier |
| CN103904433A (en) * | 2014-04-12 | 2014-07-02 | 深圳市中兴移动通信有限公司 | Tunable multi-band antenna and wireless communication device |
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2016
- 2016-08-16 CN CN201610674775.6A patent/CN106301304A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110002080A1 (en) * | 2008-02-28 | 2011-01-06 | Peregrine Semiconductor Corporation | Method and apparatus for use in digitally tuning a capacitor in an integrated circuit device |
| CN101626222A (en) * | 2008-07-07 | 2010-01-13 | 阿尔特拉公司 | Adjustable electrical components formed from arrays of differential circuit elements |
| CN103023441A (en) * | 2012-12-06 | 2013-04-03 | 北京中科汉天下电子技术有限公司 | Bandwidth regulating method for radio frequency power amplifier and radio frequency power amplifier |
| CN103904433A (en) * | 2014-04-12 | 2014-07-02 | 深圳市中兴移动通信有限公司 | Tunable multi-band antenna and wireless communication device |
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