CN106899323A - A kind of RF switch and its control method - Google Patents
A kind of RF switch and its control method Download PDFInfo
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- CN106899323A CN106899323A CN201710154715.6A CN201710154715A CN106899323A CN 106899323 A CN106899323 A CN 106899323A CN 201710154715 A CN201710154715 A CN 201710154715A CN 106899323 A CN106899323 A CN 106899323A
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- 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
- H04B1/401—Circuits for selecting or indicating operating mode
Abstract
The invention discloses a kind of RF switch, including：Signal transmission module, quantity at least two, each signal transmission module includes：Logic control module, series arm module, parallel branch module, public port, grounding ports and branch port；Wherein, series arm module is arranged between public port and branch port；Parallel branch module is arranged between grounding ports and branch port；The public port of each signal transmission module is connected；The branch port of each signal transmission module is connected to each other；Logic control module, connects series arm module and parallel branch module.The invention also discloses a kind of control method of RF switch.
Description
Technical field
The present invention relates to wireless communication technology, especially a kind of RF switch and its control method.
Background technology
In the chips using when throwing several RF switches more, it is necessary to ensure switch closed and to switch off switch under state full
The requirement of the certain isolation of foot, switch isolation degree has two influence factors, is respectively isolation and chip key on chip dies
Coupling between zygonema, in the prior art, being typically used on each branch switch increases the branch road for being parallel to ground (parallel connection branch
Road) mode improve switch isolation degree, but this method can not be effectively improved the coupling of chip bonding line.Bonding line away from
In the case of close, due to bonding line coupling effect, the coupling effect of bonding line may strengthen when parallel branch is turned on, and lead
Cause isolation more worse than the situation without parallel branch on the contrary.
The content of the invention
In view of this, the embodiment of the present invention is expected to provide a kind of RF switch and its control method, can solve the problem that coupling effect
The problem of the isolation reduction of RF switch caused by answering.
To reach above-mentioned purpose, what the technical scheme of the embodiment of the present invention was realized in：
A kind of RF switch is the embodiment of the invention provides, including：
Signal transmission module, quantity at least two, each described signal transmission module includes：
Logic control module, series arm module, parallel branch module, public port, grounding ports and branch port,
Wherein, the series arm module is arranged between the public port and the branch port；
The parallel branch module is arranged between the grounding ports and the branch port；
The public port of each signal transmission module is connected；The branch port of each signal transmission module connects each other
Connect；
The Logic control module, connects the series arm module and the parallel branch module, for according to reception
First state first via control signal, control series arm module conducting, and according to the of the first state for receiving
Two tunnel control signals, control the parallel branch module to disconnect, so that the signal transmission module is in running order；
The Logic control module, is additionally operable to the first via control signal according to the second state for receiving, and controls the string
Connection branch road module disconnects, and according to the second tunnel control signal for receiving, controls the parallel branch module to disconnect or turn on, so that
The signal transmission module is in off working state.
The working condition, i.e. signal transmission module are used for the state of signal transmission；
The state of the off working state, as signal transmission module stop signal transmission.
In such scheme, the Logic control module, including：
First Logic control module, the first end of first Logic control module is connected to the series arm module,
For performing one below：According to the first via control signal of the first state for receiving, the series arm module is controlled
Conducting；According to the first via control signal of second state for receiving, the series arm module is controlled to disconnect；
Second Logic control module, the first end of second Logic control module is connected to the parallel branch module,
For performing one below：
According to the second tunnel control signal of the first state for receiving, the parallel branch module is controlled to disconnect；
According to the second tunnel control signal of second state for receiving, the parallel branch module conducting is controlled.
In such scheme, the RF switch also includes：
First switch module, is arranged in the series arm module, for performing one below：
When closure state is under the control in first Logic control module, the series arm module is controlled
Conducting, to connect the public port and branch port；
When being off under the control in first Logic control module, control the public port and divide
The connection of branch port disconnects, so that the series arm module disconnects；
Second switch module；
The second switch module, is arranged in the parallel branch module, for performing one below：
When closure state is under the control in second Logic control module, the parallel branch module is controlled
Conducting, to connect the grounding ports and branch port；
When being off under the control in second Logic control module, control the grounding ports and divide
The connection of branch port disconnects, so that the parallel branch module disconnects.
In such scheme, the RF switch also includes：
First signal source module, first signal source module connects the second end of first Logic control module, uses
In execution one below：
Launch the first via control signal of the first state to first Logic control module, control the series connection branch
Road module conducting；
Launch the first via control signal of second state to first Logic control module, control the series connection branch
Road module disconnects；
Secondary signal source module, the secondary signal source module connects the second end of second Logic control module, uses
In execution one below：
Launch the second tunnel control signal of the first state to second Logic control module, control the branch in parallel
Road module disconnects；
Launch the second tunnel control signal of second state to second Logic control module, control the branch in parallel
Road module conducting.
In such scheme, the signal transmission module also includes：
First chip bonding pad, the second chip bonding pad, the first bonding line and the second bonding line；Wherein,
First chip bonding pad is located in the series arm module, and second chip bonding pad is located at the branch in parallel
In the module of road；
The first end of first bonding line connects first chip bonding pad, the first end connection of second bonding line
Second chip bonding pad.
In such scheme, the RF switch also includes：
Pin, quantity is N+1, and N is the quantity of the signal transmission module, wherein,
N-th pin connects the second end of first bonding line in the n-th signal transmission module, the span of n for 1≤
n≤N；
N+1 pins connect the second end of second bonding line in each signal transmission module；
The RF switch also includes：
Housing, the housing is used to encapsulate at least two signal transmission module；
Second end of the N+1 pin appears in the hull outside.
The embodiment of the present invention additionally provides a kind of control method of RF switch, and the RF switch includes：
Signal transmission module, quantity at least two；The signal transmission module includes：
Logic control module, series arm module, parallel branch module, public port, grounding ports and branch port,
Wherein, the series arm module is arranged between the public port and the branch port；
The parallel branch module is arranged between the grounding ports and the branch port；
The public port of each signal transmission module is connected；The branch port of each signal transmission module connects each other
Connect；
Methods described includes：
The Logic control module controls the series arm mould according to the first via control signal of the first state for receiving
Block is turned on, and according to the second tunnel control signal of the first state for receiving, controls the parallel branch module to disconnect, so that described
Signal transmission module is in running order；
The Logic control module controls the series arm mould according to the first via control signal of the second state for receiving
Block disconnects, and according to the second tunnel control signal for receiving, controls the parallel branch module to disconnect or turn on, so that the signal
Transport module is in off working state.
In such scheme, the Logic control module includes：
First Logic control module, the first end of first Logic control module connects the series arm module；
Second Logic control module, the first end of the second logic control port connects the parallel branch module；
Methods described also includes：
First Logic control module performs one below according to the control signal for being received：
According to the first via control signal of the first state for receiving, the series arm module conducting is controlled；
According to the first via control signal of second state for receiving, the series arm module is controlled to disconnect；
Second Logic control module performs one below according to the control signal for receiving：
According to the second tunnel control signal of the first state for receiving, the parallel branch module is controlled to disconnect；
According to the second tunnel control signal of second state for receiving, the parallel branch module conducting is controlled.
In such scheme, the RF switch also includes：
First switch module, is arranged in the series arm module；
Second switch module, is arranged in the parallel branch module；
Methods described also includes：
When different conditions are under the control in first Logic control module, the first switch module is performed
One below：
When closure state is under the control in first Logic control module, connects the public port and divide
Branch port, so that the series arm module is turned on；
When being off under the control in first Logic control module, disconnect the public port and divide
The connection of branch port, so that the series arm module disconnects；
When different conditions are under the control in second Logic control module, the second switch module is performed
One below：
When closure state is located under the control in second Logic control module, the grounding ports and branch are connected
Port, so that the parallel branch module is turned on；
When off-state is located under the control in second Logic control module, the grounding ports and branch are disconnected
The connection of port, so that the parallel branch module disconnects.
In such scheme, the RF switch also includes：
First signal source module, connects the second end of first Logic control module；
Secondary signal source module, connects the second end of second Logic control module；
Methods described also includes：
First signal source module performs one below to the first Logic control module emissioning controling signal：
Launch the first via control signal of the first state to first Logic control module, control the series connection branch
Road module conducting；
Launch the first via control signal of second state to first Logic control module, control the series connection branch
Road module disconnects；
The secondary signal source module performs one below to the second Logic control module emissioning controling signal：
Launch the second tunnel control signal of the first state to second Logic control module, control the branch in parallel
Road module disconnects；
Launch the second tunnel control signal of second state to second Logic control module, control the branch in parallel
Road module conducting.
RF switch provided in an embodiment of the present invention includes：Signal transmission module, quantity at least two, each described letter
Number transport module includes：Logic control module, series arm module, parallel branch module, public port, grounding ports and branch
Port, wherein, the Logic control module can be used for the first via control signal according to the first state for receiving, and control institute
The conducting of series arm module is stated, and according to the second tunnel control signal of the first state for receiving, controls the parallel branch module
Disconnect, it is in running order to trigger the signal transmission module；Can be also used for the first via according to the second state for receiving
Control signal, controls the series arm module to disconnect, and according to the second tunnel control signal for receiving, controls the parallel branch
Module disconnects or turns on, so that the signal transmission module is in off working state.
Series arm module and parallel branch module are realized respectively by two path control signal control in the embodiment of the present invention
The switching of working condition and off working state, and pass through the conducting of parallel branch module and disconnect that two states are corresponding to realize institute
State the different isolations of RF switch.
The parallel branch module of the signal transmission module in individually control RF switch is realized due to the embodiment of the present invention
With series arm module such that it is able to flexible modulation switch isolation, it is not necessary to limit use environment, realize it is simple and convenient,
The scope of application is wider.
Brief description of the drawings
Fig. 1 is two connection diagrams of signal transmission module in RF switch provided in an embodiment of the present invention；
Fig. 2 is an optional composition knot of signal transmission module in RF switch provided in an embodiment of the present invention in Fig. 1
Structure schematic diagram；
Fig. 3 is another optional composition of signal transmission module in RF switch provided in an embodiment of the present invention in Fig. 1
Structural representation；
Fig. 4 is a kind of RF switch encapsulation schematic diagram provided in an embodiment of the present invention；
Fig. 5 is that the control method of the RF switch that the embodiment of the present invention one is provided realizes schematic flow sheet；
Fig. 6 is that the control method of the RF switch that the embodiment of the present invention two is provided realizes schematic flow sheet；
Fig. 7 is that the control method of the RF switch that the embodiment of the present invention three is provided realizes schematic flow sheet.
Specific embodiment
The characteristics of in order to more fully hereinafter understand the embodiment of the present invention and technology contents, below in conjunction with the accompanying drawings to this hair
The realization of bright embodiment is described in detail, appended accompanying drawing purposes of discussion only for reference, not for limiting the present invention.
, it is necessary to explanation in embodiment of the present invention record, unless otherwise indicated and limit, term " connection " should do extensively
Reason and good sense solution, for example, it may be electrical connection, or two connections of element internal, can be joined directly together, it is also possible to pass through
Intermediary is indirectly connected to, and for the ordinary skill in the art, can as the case may be understand above-mentioned term
Concrete meaning.
It should be noted that the term " first second the 3rd " involved by the embodiment of the present invention is only to be similar difference
Object, the particular sorted for object is not represented, it is possible to understand that ground, " Yi Ers the 3rd " can be with the case of permission
Exchange specific order or precedence.It should be appreciated that the object that " first second the 3rd " is distinguished in the appropriate case can be mutual
Change, so that embodiments of the invention described herein can be with the order reality in addition to those for illustrating herein or describing
Apply.
Before the present invention will be described in further detail, noun and term to being related in the embodiment of the present invention are said
Bright, the noun and term being related in the embodiment of the present invention are applied to following explanation.
Isolation, local oscillator or radio frequency signal leakage to other ports the ratio between power and input power, in RF switch
The requirement of the isolation for needing to meet different between each signal transmission module；
Parallel branch, each RF switch includes several signal transmission modules, in each signal transmission module, all
Comprising a parallel branch, branch port and grounding ports for connecting the signal transmission module；
Series arm, each RF switch includes several signal transmission modules, in each signal transmission module, all
Comprising a series arm, branch port and public port for connecting the signal transmission module；
RF switch, is packaged in IC chip, and each RF switch includes several signal transmission modules, often
One signal transmission module all includes a series arm and a parallel branch, and each series arm and parallel branch have
Bonding line is drawn, and is connected at the pin of the chip.
Working condition, i.e. signal transmission module are used for the state of signal transmission；
The state of off working state, as signal transmission module stop signal transmission.
Fig. 1 is two connection diagrams of signal transmission module in RF switch provided in an embodiment of the present invention, such as Fig. 1 institutes
Show, signal transmission module, quantity at least two, signal transmission module 101 passes through branch port 103 and signal transmission module
102 branch port 104 is connected to each other；The common port 107 and the signal transmission module 102 of the signal transmission module 101
Common port 108 be connected；The signal transmission module also includes grounding ports 105；The signal transmission module 102 also includes
Grounding ports 106.
Fig. 2 is an optional composition knot of signal transmission module in RF switch provided in an embodiment of the present invention in Fig. 1
Structure schematic diagram, as shown in Fig. 2 one of signal transmission module optional composition knot in RF switch provided in an embodiment of the present invention
Structure includes：
Signal transmission module, quantity at least two, each described signal transmission module includes：
Logic control module 201, series arm module 202, parallel branch module 203, public port 204, grounding ports
205 and branch port 206.
Wherein, the series arm module 202 is arranged between the public port 204 and the branch port 206；
The parallel branch module 203 is arranged between the grounding ports 205 and the branch port 206；
Public port of the public port 204 of each signal transmission module respectively with the RF switch is connected；Respectively
The branch port 206 of the signal transmission module is connected to each other；
The Logic control module 201, connects the series arm module 202 and the parallel branch module 203, is used for
According to the first via control signal of the first state for receiving, the series arm module 202 is controlled to turn on, and according to for receiving
Second tunnel control signal of one state, controls the parallel branch module 203 to disconnect, and is in triggering the signal transmission module
Working condition；Now, the control signal of the first state can be high level signal, it is possible to use numeral 10 and 100 is represented；
The Logic control module 201, is additionally operable to the first via control signal according to the second state for receiving, and control is described
Series arm module 202 disconnects, and according to the second tunnel control signal for receiving, control the parallel branch module 203 disconnect or
Conducting, so that the signal transmission module is in off working state；Now, the control signal of second state can be low electricity
Ordinary mail number, it is possible to use numeral 01 and 010 is represented.
In the embodiment described in the present invention, the first state correspond to the work shape of the signal transmission module
State, now, the series arm module 202 in the signal transmission module is in connection status, and parallel branch module 203 is in disconnected
Open state；
Second state correspond to the off working state of the signal transmission module, now, the signal transmission module
Series arm module 202 be off, parallel branch module 203 be in connection status or off-state.
Fig. 3 is another optional composition structural representation of signal transmission module provided in an embodiment of the present invention in Fig. 1；
As shown in figure 3, another optional composition structure of signal transmission module provided in an embodiment of the present invention includes：
First Logic control module 2011, the second Logic control module 2012, series arm module 202, first switch mould
Block 2021, parallel branch module 203, second switch module 2031, public port 204, grounding ports 205, branch port 206,
First signal source module 207 and secondary signal source module 208；
Specifically, the series arm module 202 is arranged between the public port 204 and the branch port 206；
The parallel branch module 203 is arranged between the grounding ports 205 and the branch port 206；
The public port 204 of each signal transmission module is connected and is connected to the public port of the RF switch；It is each described
The branch port 206 of signal transmission module is connected to each other；
The first end of first Logic control module 2011 is connected to the series arm module 202,
For performing one below：
According to the first via control signal of the first state for receiving, the series arm module 202 is controlled to turn on；Root
According to the first via control signal of second state for receiving, the series arm module 202 is controlled to disconnect；
The first end of second Logic control module 2012 is connected to the parallel branch module 203,
For performing one below：
According to the second tunnel control signal of the first state for receiving, the disconnection of the parallel branch module 203 is controlled；
According to the second tunnel control signal of second state for receiving, the conducting of the parallel branch module 203 is controlled.
The first switch module 2021, is arranged in the series arm module 202,
For performing one below：
When closure state is under the control in first Logic control module 2011, so that the series arm
Module 202 is turned on, to connect the public port 204 and branch port 206；
When being off under the control in first Logic control module 2011, so that the public port
204 and branch port 206 connection disconnect, realize the disconnection of the series arm module 202；
The second switch module 2031, is arranged in the parallel branch module 203,
For performing one below：
When closure state is under the control in second Logic control module 2012, so that the parallel branch
Module 203 is turned on, to connect the grounding ports 205 and branch port 206；
When being off under the control in second Logic control module 2012, so that the grounding ports
205 and branch port 206 connection disconnect, realize the disconnection of the parallel branch module 203.
First signal source module 207 connects the second end of first Logic control module 2011,
For performing one below：
Launch the first via control signal of the first state to first Logic control module 2011, control the string
Connection branch road module 202 is turned on；
Launch the first via control signal of second state to first Logic control module 2011, control described the
The series arm module 202 of two-state disconnects；
The secondary signal source module 208 connects the second end of second Logic control module 2012,
For performing one below：
Launch the second tunnel control signal of the first state to second Logic control module 2012, described in control simultaneously
Connection branch road module 203 disconnects；
Launch the second tunnel control signal of second state to second Logic control module 2012, described in control simultaneously
Connection branch road module 203 is turned on.
Fig. 4 is a kind of encapsulation of the RF switch of signal transmission module including shown in Fig. 2 provided in an embodiment of the present invention
Schematic diagram, as shown in figure 4, signal transmission module is 400, the RF switch also includes：First chip bonding pad 401, the second core
Piece pad 402, the first bonding line 403 and the second bonding line 404；Wherein,
First chip bonding pad 401 is located in the series arm module 202, and second chip bonding pad 402 is located at
In the parallel branch module 203；
The first end of first bonding line 403 connects first chip bonding pad 401, second bonding line 404
First end connects second chip bonding pad 402；
When the RF switch is encapsulated, at least two signal transmission module is array packages in housing；The row
Row mode is included but is not limited to：Symmetric arrays or linear arrangement；
The signal transmission module also includes：
The RF switch also includes：
Pin, quantity is N+1, and N is the quantity of the signal transmission module, wherein,
N-th pin connects the second end of first bonding line in the n-th signal transmission module, the span of n for 1≤
n≤N；
N+1 pins connect the second end of second bonding line in each signal transmission module；
The RF switch also includes：
Housing 405, the housing 405 is used to encapsulate at least two signal transmission module；
Second end of the N+1 pin appears outside the housing 405.
In practical application, the RF switch can be by the encapsulation twice of the first housing and the second housing, by first
The first time encapsulation of housing, the public port of the signal transmission module, branch port, grounding ports, pin the second end all
It is emerging in first shell in vitro, by second encapsulation of the second housing, the second end of only described pin is emerging in the second housing
Outward, it is used to grounding ports, branch port and the public port realizing protecting the signal transmission module.
Fig. 5 is that the control method of the RF switch that the embodiment of the present invention one is provided realizes schematic flow sheet；In embodiment one
The composition of the RF switch signal transmission module for being used as shown in figure 3, including：
First Logic control module 2011, the second Logic control module 2012, series arm module 202, first switch mould
Block 2021, parallel branch module 203, second switch module 2031, public port 204, grounding ports 205, branch port 206,
First signal source module 207 and secondary signal source module 208；
Specifically, the series arm module 202 is between the public port 204 and the branch port 206；
The parallel branch module 203 is between the grounding ports 205 and the branch port 206；
The public port 204 of each signal transmission module is connected and is connected to the public port of the RF switch；It is each described
The branch port 206 of signal transmission module is connected to each other；
The first end of first Logic control module 2011 connects the series arm module 202；
The first end of second Logic control module connects the parallel branch module；
The first switch module 2021, is arranged in the series arm module 202；
The second switch module 2031, is arranged in the parallel branch module 203；
First signal source module 207 connects the second end of first Logic control module 2011；
The secondary signal source module 208 connects the second end of second Logic control module 2012；
As shown in figure 5, the control method of the RF switch of the offer of the embodiment of the present invention one realizes that flow is comprised the following steps：
Step 501：First signal source module 207 is to first Logic control module 2011 transmitting first state
First via control signal；
Step 502：First Logic control module 2011 receive that first signal source module 207 sends described the
The first via control signal of one state；
Step 503：First Logic control module 2011 is according to the first via control signal of the first state to institute
State first switch module 2021 and send close command；
Step 504：The closure that the first switch module 2021 receives the transmission of the first Logic control module 2011 refers to
Order, closes the first switch module 2021, realizes the conducting of the series arm module 202；
Step 505：The secondary signal source module 208 is to second Logic control module 2012 transmitting first state
Second tunnel control signal；
Step 506：Second Logic control module 2012 receive that the secondary signal source module 208 sends described the
Second tunnel control signal of one state；
Step 507：Second Logic control module 2012 is according to the second tunnel control signal of the first state to institute
State second switch module 2031 and send open command；
Step 508：The disconnection that the second switch module 2031 receives the transmission of the second Logic control module 2012 refers to
Order, disconnects the second switch module 2031, so that the disconnection of the parallel branch module 203；
Now, the series arm module 202 is turned on, and the parallel branch module 203 disconnects, the signal transmission module
It is in running order, signal transmission can be realized.
Fig. 6 is that the control method of the RF switch that the embodiment of the present invention two is provided realizes schematic flow sheet；In embodiment two
The composition of the RF switch signal transmission module for being used as shown in figure 3, including：
First Logic control module 2011, the second Logic control module 2012, series arm module 202, first switch mould
Block 2021, parallel branch module 203, second switch module 2031, public port 204, grounding ports 205, branch port 206,
First signal source module 207 and secondary signal source module 208；
Specifically, the series arm module 202 is between the public port 204 and the branch port 206；
The parallel branch module 203 is between the grounding ports 205 and the branch port 206；
The public port 204 of each signal transmission module is connected and is connected to the public port of the RF switch；It is each described
The branch port 206 of signal transmission module is connected to each other；
The first end of first Logic control module 2011 connects the series arm module 202；
The first end of second Logic control module 2012 connects the parallel branch module 203；
The first switch module 2021, is arranged in the series arm module 202；
The second switch module 2031, is arranged in the parallel branch module 203；
First signal source module 207 connects the second end of first Logic control module 2011；
The secondary signal source module 208 connects the second end of second Logic control module 2012；
As shown in fig. 6, the control method of the RF switch of the offer of the embodiment of the present invention two realizes that flow is comprised the following steps：
Step 601：First signal source module 207 launches the second state to first Logic control module 2011
First via control signal；
Step 602：First Logic control module 2011 receive that first signal source module 207 sends described the
The first via control signal of two-state；
Step 603：First Logic control module 2011 is according to the first via control signal of second state to institute
State first switch module 2021 and send open command；
Step 604：The disconnection that the first switch module 2021 receives the transmission of the first Logic control module 2011 refers to
Order, disconnects the first switch module 2021, realizes the disconnection of the series arm module 202；
Step 605：The secondary signal source module 208 is to second Logic control module 2012 transmitting first state
Second tunnel control signal；
Step 606：Second Logic control module 2012 receive that the secondary signal source module 208 sends described the
Second tunnel control signal of one state；
Step 607：Second Logic control module 2012 is according to the second tunnel control signal of the first state to institute
State second switch module 2031 and send open command；
Step 608：The disconnection that the second switch module 2031 receives the transmission of the second Logic control module 2012 refers to
Order, disconnects the second switch module 2031, so that the disconnection of the parallel branch module 203；
Now, the series arm module 202 disconnects, and the parallel branch module 203 disconnects, the signal transmission module
In off working state.
Fig. 7 is that the control method of the RF switch that the embodiment of the present invention three is provided realizes schematic flow sheet, in embodiment three
The composition of the RF switch signal transmission module for being used as shown in figure 3, including：
First Logic control module 2011, the second Logic control module 2012, series arm module 202, first switch mould
Block 2021, parallel branch module 203, second switch module 2031, public port 204, grounding ports 205, branch port 206,
First signal source module 207 and secondary signal source module 208；
Specifically, the series arm module 202 is between the public port 204 and the branch port 206；
The parallel branch module 203 is between the grounding ports 205 and the branch port 206；
The public port 204 of each signal transmission module is connected and is connected to the public port of the RF switch；It is each described
The branch port 206 of signal transmission module is connected to each other；
The first end of first Logic control module 2011 connects the series arm module 202；
The first end of second Logic control module 2012 connects the parallel branch module 203；
The first switch module 2021, is arranged in the series arm module 202；
The second switch module 2031, is arranged in the parallel branch module 203；
First signal source module 207 connects the second end of first Logic control module 2011；
The secondary signal source module 208 connects the second end of second Logic control module 2012；
As shown in fig. 7, the control method of the RF switch of the offer of the embodiment of the present invention three realizes that flow is comprised the following steps：
Step 701：First signal source module 207 launches the second state to first Logic control module 2011
First via control signal；
Step 702：First Logic control module 2011 receives described second that first signal source module sends
The first via control signal of state；
Step 703：First Logic control module 2011 is according to the first via control signal of second state to institute
State first switch module 2021 and send open command；
Step 704：The disconnection that the first switch module 2021 receives the transmission of the first Logic control module 2011 refers to
Order, disconnects the first switch module 2021, so that the disconnection of the series arm module 202；
Step 705：The secondary signal source module 208 launches the second state to second Logic control module 2012
Second tunnel control signal；
Step 706：Second Logic control module 2012 receive that the secondary signal source module 208 sends described the
Second tunnel control signal of two-state；
Step 707：Second Logic control module 2012 is according to the second tunnel control signal of second state to institute
State second switch module 2031 and send close command；
Step 708：The closure that the second switch module 2031 receives the transmission of the second Logic control module 2012 refers to
Order, closes the second switch module 2031, so that the closure of the parallel branch module 203；
Now, the series arm module 202 is disconnected, and the parallel branch module 203 is closed, the signal transmission module
In off working state, wherein, due to the closure of the parallel branch module 203, realize grounding ports 205 and branch port
206 connection, such that it is able to realize the isolation between Regulate signal transport module.
Series arm module and parallel branch module are realized respectively by two path control signal control in the embodiment of the present invention
The switching of working condition and off working state, and pass through the conducting of parallel branch module and disconnect that two states are corresponding to realize institute
State the different isolations of RF switch.
The parallel branch module of the signal transmission module in individually control RF switch is realized due to the embodiment of the present invention
With series arm module such that it is able to the isolation of flexible modulation switch, signal transmission module series connection in the prior art is overcome
Branch road and parallel branch must be controlled by one group of opposite control signal, and when parallel branch disconnects, parallel branch must be closed
The defect of conjunction, while the embodiment of the present invention need not limit use environment, realizes simple and convenient, and the scope of application is wider.
The above, only presently preferred embodiments of the present invention is not intended to limit the scope of the present invention, it is all
Any modification, equivalent and improvement for being made within the spirit and principles in the present invention etc., should be included in protection of the invention
Within the scope of.
Claims (10)
1. a kind of RF switch, it is characterised in that the RF switch includes：
Signal transmission module, quantity at least two, each described signal transmission module includes：
Logic control module, series arm module, parallel branch module, public port, grounding ports and branch port,
Wherein, the series arm module is arranged between the public port and the branch port；
The parallel branch module is arranged between the grounding ports and the branch port；
The public port of each signal transmission module is connected；The branch port of each signal transmission module is connected to each other；
The Logic control module, connects the series arm module and the parallel branch module, for according to for receiving
The first via control signal of one state, controls the series arm module conducting, and according to the second tunnel of the first state for receiving
Control signal, controls the parallel branch module to disconnect, so that the signal transmission module is in running order；
The Logic control module, is additionally operable to the first via control signal according to the second state for receiving, and controls the series connection branch
Road module disconnects, and according to the second tunnel control signal for receiving, controls the parallel branch module to disconnect or turn on, so that described
Signal transmission module is in off working state.
2. RF switch according to claim 1, it is characterised in that
The Logic control module, including：
First Logic control module, the first end of first Logic control module is connected to the series arm module, is used for
Perform one below：According to the first via control signal of the first state for receiving, the series arm module conducting is controlled；
According to the first via control signal of second state for receiving, the series arm module is controlled to disconnect；
Second Logic control module, the first end of second Logic control module is connected to the parallel branch module, is used for
Perform one below：
According to the second tunnel control signal of the first state for receiving, the parallel branch module is controlled to disconnect；
According to the second tunnel control signal of second state for receiving, the parallel branch module conducting is controlled.
3. RF switch according to claim 2, it is characterised in that
The RF switch also includes：
First switch module, is arranged in the series arm module, for performing one below：
When closure state is under the control in first Logic control module, the series arm module is controlled to lead
It is logical, to connect the public port and branch port；
When being off under the control in first Logic control module, the public port and branch end are controlled
The connection of mouth disconnects, so that the series arm module disconnects；
Second switch module；
The second switch module, is arranged in the parallel branch module, for performing one below：
When closure state is under the control in second Logic control module, the parallel branch module is controlled to lead
It is logical, to connect the grounding ports and branch port；
When being off under the control in second Logic control module, the grounding ports and branch end are controlled
The connection of mouth disconnects, so that the parallel branch module disconnects.
4. RF switch according to claim 2, it is characterised in that
The RF switch also includes：
First signal source module, first signal source module connects the second end of first Logic control module, for holding
Row one below：
Launch the first via control signal of the first state to first Logic control module, control the series arm mould
Block is turned on；
Launch the first via control signal of second state to first Logic control module, control the series arm mould
Block disconnects；
Secondary signal source module, the secondary signal source module connects the second end of second Logic control module, for holding
Row one below：
Launch the second tunnel control signal of the first state to second Logic control module, control the parallel branch mould
Block disconnects；
Launch the second tunnel control signal of second state to second Logic control module, control the parallel branch mould
Block is turned on.
5. RF switch according to claim 1, it is characterised in that
The signal transmission module also includes：
First chip bonding pad, the second chip bonding pad, the first bonding line and the second bonding line；Wherein,
First chip bonding pad is located in the series arm module, and second chip bonding pad is located at the parallel branch mould
In block；
The first end of first bonding line connects first chip bonding pad, and the first end connection of second bonding line is described
Second chip bonding pad.
6. RF switch according to claim 5, it is characterised in that
The RF switch also includes：
Pin, quantity is N+1, and N is the quantity of the signal transmission module, wherein,
N-th pin connects the second end of first bonding line in the n-th signal transmission module, the span of n for 1≤n≤
N；
N+1 pins connect the second end of second bonding line in each signal transmission module；
The RF switch also includes：
Housing, the housing is used to encapsulate at least two signal transmission module；
Second end of the N+1 pin appears in the hull outside.
7. a kind of control method of RF switch, it is characterised in that the RF switch includes：
Signal transmission module, quantity at least two；The signal transmission module includes：
Logic control module, series arm module, parallel branch module, public port, grounding ports and branch port,
Wherein, the series arm module is arranged between the public port and the branch port；
The parallel branch module is arranged between the grounding ports and the branch port；
The public port of each signal transmission module is connected；The branch port of each signal transmission module is connected to each other；
Methods described includes：
The Logic control module controls the series arm module to lead according to the first via control signal of the first state for receiving
It is logical, and according to the second tunnel control signal of the first state for receiving, control the parallel branch module to disconnect, so that the signal
Transport module is in running order；
The Logic control module controls the series arm module to break according to the first via control signal of the second state for receiving
Open, and according to the second tunnel control signal for receiving, control the parallel branch module to disconnect or turn on, so that the signal transmission
Module is in off working state.
8. method according to claim 7, it is characterised in that the Logic control module includes：
First Logic control module, the first end of first Logic control module connects the series arm module；
Second Logic control module, the first end of the second logic control port connects the parallel branch module；
Methods described also includes：
First Logic control module performs one below according to the control signal for being received：
According to the first via control signal of the first state for receiving, the series arm module conducting is controlled；
According to the first via control signal of second state for receiving, the series arm module is controlled to disconnect；
Second Logic control module performs one below according to the control signal for receiving：
According to the second tunnel control signal of the first state for receiving, the parallel branch module is controlled to disconnect；
According to the second tunnel control signal of second state for receiving, the parallel branch module conducting is controlled.
9. method according to claim 7, it is characterised in that the RF switch also includes：
First switch module, is arranged in the series arm module；
Second switch module, is arranged in the parallel branch module；
Methods described also includes：
When different conditions are under the control in first Logic control module, the first switch module performs following
One of：
When closure state is under the control in first Logic control module, the public port and branch end are connected
Mouthful, so that the series arm module is turned on；
When being off under the control in first Logic control module, the public port and branch end are disconnected
The connection of mouth, so that the series arm module disconnects；
When different conditions are under the control in second Logic control module, the second switch module performs following
One of：
When closure state is under the control in second Logic control module, the grounding ports and branch end are connected
Mouthful, so that the parallel branch module is turned on；
When being off under the control in second Logic control module, the grounding ports and branch end are disconnected
The connection of mouth, so that the parallel branch module disconnects.
10. method according to claim 7, it is characterised in that the RF switch also includes：
First signal source module, connects the second end of first Logic control module；
Secondary signal source module, connects the second end of second Logic control module；
Methods described also includes：
First signal source module performs one below to the first Logic control module emissioning controling signal：
Launch the first via control signal of the first state to first Logic control module, control the series arm mould
Block is turned on；
Launch the first via control signal of second state to first Logic control module, control the series arm mould
Block disconnects；
The secondary signal source module performs one below to the second Logic control module emissioning controling signal：
Launch the second tunnel control signal of the first state to second Logic control module, control the parallel branch mould
Block disconnects；
Launch the second tunnel control signal of second state to second Logic control module, control the parallel branch mould
Block is turned on.
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| CN201710154715.6A CN106899323B (en) | 2017-03-15 | 2017-03-15 | Radio frequency switch and control method thereof |
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| CN106899323B (en) | 2020-04-21 |
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Address after: 510663 8th floor, building C2, Chuangxin building, No. 182, Kexue Avenue, Huangpu District, Guangzhou, Guangdong Patentee after: Guangzhou Huizhi Microelectronics Co.,Ltd. Address before: 510663 unit c3-802, innovation building, 182 science Avenue, Science City, Guangzhou high tech Industrial Development Zone, Guangdong Province Patentee before: SMARTER MICROELECTRONICS (GUANG ZHOU) Co.,Ltd. |