CN104065394B - Path switching system and the path switching method - Google Patents
Path switching system and the path switching method Download PDFInfo
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- CN104065394B CN104065394B CN201310084401.5A CN201310084401A CN104065394B CN 104065394 B CN104065394 B CN 104065394B CN 201310084401 A CN201310084401 A CN 201310084401A CN 104065394 B CN104065394 B CN 104065394B
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Abstract
One path switching system, which includes signal processing unit, first path, at least the second path, a gain unit and circuit unit.Signal processing unit receives the first signal and produces the first subsignal after signal processing unit processes and the second subsignal.One end of first path receives the first subsignal, and the other end exports the first subsignal to antenna.The one end in the second path receives the first signal from antenna transmission, the first signal of other end output antenna transmission.An at least gain unit is arranged at first path or the second path, to the first signal of gain or the first subsignal.Circuit unit receives secondary signal, and decides whether an enable at least gain unit according to the second subsignal.In addition, the present invention also provides a kind of path switching method, which is applied in above-mentioned path switching system.The present invention can self-sensing instantly signal for transmission signal or receive signal, switch with through first path transmit signal and through the second path receive signal.
Description
【Technical field】
The present invention relates to a kind of signal processing system, and in particular to a kind of path switching system and the path switching method.
【Background technology】
In general, electronic installation utilizes a micro controller unit（Microcontroller Unit,MCU）To control nothing
The transmitting-receiving action of line signal, wireless signal such as WLAN（Wireless Local Area Network,WLAN）
Deng.However, when wireless signal to be received is excessively weak, it is possible to cause micro controller unit cannot normal operation, for example cannot be just
The wireless signal that true deciphering is received.On the other hand, the signal to be transmitted when electronic installation is short of enough energy, signal then without
Method is transferred into predetermined destination as expected.Therefore, how this is possessing under original framework, strengthens for wireless signal
Transmitting-receiving ability, become the important research topic in this area one.
【The content of the invention】
The present invention provides a kind of path switching system, according to the bang path of the strong and weak switching signal of signal, and can control
The enable of gain unit in bang path processed.
The present invention provides a kind of path switching system, its include the first signal processing unit, first path, the second path,
At least one first gain unit and the first circuit unit.First signal processing unit receives the first signal and produces the first signal
The first subsignal and the second subsignal after processing unit processes.One end of first path receives the first subsignal, first path
The other end export the first subsignal to antenna.The one end in the second path receives the first signal from antenna transmission, the second path
The other end output antenna transmission the first signal.At least one first gain unit is arranged at first path or the second path, uses
With the first signal of gain or the first subsignal.First circuit unit receives the second subsignal, and determines according to second subsignal
Whether enable at least one first gain unit.
In addition, the present invention also provides a kind of path switching method, which is applied to a path switching system, and wherein system includes
One first signal processing unit, a first path, one second path, one first circuit unit, one first gain list of wherein at least
Unit is arranged at the first path or second path, comprises the following steps.First, the first signal is received to the first signal transacting list
Unit, the first signal processing unit produce the first subsignal and the second subsignal according to the first signal.Then, transmit the first subsignal
To first path.Then, the second subsignal to the first circuit unit is transmitted, the first circuit unit according to the judgement of the second subsignal is
No enable at least one first gain unit.
Compared to prior art, the present invention provides a kind of path switching system and the path switching method, can self-sensing
Instantly signal is for transmission signal or receives signal, switches to transmit signal through first path and receive through the second path
Signal.
【Description of the drawings】
Fig. 1 is schematically shown as the first functional block diagram of path switching system of the present invention.
Fig. 2 is schematically shown as the functional block diagram of circuit unit of the present invention.
Fig. 3 is schematically shown as the second functional block diagram of path switching system of the present invention.
Fig. 4 is schematically shown as the 3rd functional block diagram of path switching system of the present invention.
Fig. 5 is schematically shown as the 4th functional block diagram of path switching system of the present invention.
The flow chart that Fig. 6 is schematically shown as path switching method of the present invention.
【Specific embodiment】
Refer to Fig. 1, path switching system 10 is by 200 transmission signal of antenna, including signal processing unit 110, first
Path 120, the second path 130 and circuit unit 140.Signal processing unit 110, receives the first signal S1, and produces signal
Subsignal SS1 and the second subsignal SS2 after the process of processing unit 110.
One end coupling signal processing unit 110 of first path 120, receives subsignal SS1.First path 120 it is another
End coupling antenna 200, subsignal SS1 is to antenna 200 for output.One end coupling antenna 200 in the second path 130, receives from antenna
First signal S1 of 200 transmission.The other end coupling signal processing unit 110 in the second path 130, to signal processing unit 110
Export the first signal S1 from the transmission of antenna 200.
In the present embodiment, gain unit 131 is further comprises in the second path 130, to gain the first signal S1.And the
Also include in one path 120 that gain unit 121 is sent to the subsignal SS1 of antenna 200 with gain.
Circuit unit 140 couples signal processing unit 110 and gain unit 131, receives son from signal processing unit 110
Signal SS2, and the enable of gain unit 121 is controlled according to subsignal SS2.
Following situation is then included according to the enable of subsignal SS2 controls.First, decide whether to cause according to subsignal SS2
Can gain unit 121 or gain unit 131.And gain unit 121 and gain unit 131 have a preset gain value respectively,
After gain unit 121 and/or gain unit 131 are by 140 enable of circuit unit, then gain unit 131 and/or gain unit 131
According to preset gain value gain signal SS1 and/or signal S1.Or, gain unit 121 and/or gain unit 131 are according to subsignal
The intensity of SS2, determines a yield value respectively, and according to above-mentioned yield value gain subsignal SS1 and/or signal S1.
It should be noted that path switching system 10 includes two kinds of mode of operations, transfer mode and reception pattern, and
Switch above-mentioned two kind mode of operation through 140 selective enable gain unit 121 of circuit unit or gain unit 131.
But before two kinds of above-mentioned mode of operations are illustrated, it is necessary to which what is first illustrated is the function mode of signal processing unit 110.
Signal processing unit 110 is via signaling point SIN and electronic installation（Do not illustrate）In other components, such as wireless telecommunications
Module, or a microcontroller of control signal transmitting-receiving ability（Microcontroller Unit,MCU）Connection.Signal transacting
Unit 110 can receive the first signal S1 from signaling point SIN, produce subsignal SS1 and SS2, then distinguish after processing the first signal S1
Subsignal SS1 and SS2 are sent to into first path 120 and circuit unit 140.Signal processing unit 110 also can be from the second tunnel
Footpath 130 receives the first signal S1, produces subsignal SS1 and SS2 after processing the first signal S1.Signal processing unit 110 is distinguished again
Subsignal SS1 and SS2 are sent to into signaling point SIN and circuit unit 140.
Wherein, signal processing unit 110 produces subsignal SS1 and SS2 in the way of separating or couple.In the present embodiment
In, signal processing unit 110 receives the first signal S1, couples the first signal S1 and produces subsignal SS2, the first original signal
S1 is then converted to subsignal SS1.That is, in the present embodiment, the first signal S1 is identical with subsignal SS1, and subsignal
SS2 then has the proportionate relationship in intensity between the first signal S1, but the intensity that also can arrange subsignal SS2 is and the first signal
S1 is equal.Here, need to only guarantee that the intensity size of subsignal SS2 is directly proportional i.e. to the intensity size of the first original signal S1
Can.
And when signal processing unit 110 takes detached mode to produce subsignal SS1, SS2, subsignal SS1, SS2's
Intensity then all has a proportionate relationship with the intensity size of the first signal S1, but due to the first signal S1 and subsignal SS1, SS2
It is essential identical.In the present invention, subsignal SS1 is still regarded as and the first signal S1 identical signals.
In the present invention, signal processing unit 110 have judge the first signal S1 be from signaling point SIN inflow or
From the ability that the second path 130 flows into, therefore there is no the energy for judging that current first signal S1 is transmission signal or reception signal
Power.Therefore, 10 it is also provided with circuit unit 140 to switch transfer mode and reception pattern in path switching system, both
Mode of operation.Circuit unit 140 is switching transfer mode or reception pattern, that is, basis with the intensity of subsignal SS2
The intensity of subsignal SS2 is selecting enable gain unit 121 or 131.Hereinafter the start then for circuit unit 140 is said
It is bright.
Fig. 2 is refer to, circuit unit 140 includes judging unit 141 and control unit 142.Above-mentioned content is carry over,
Judging unit 141 receives subsignal SS2 from signal processing unit 110, and subsignal SS2 is converted to judges signal DS2.At this
In embodiment, the intensity size conversion subsignal SS2 of 141 corresponding subsignal SS2 of judging unit is to judge signal DS2.And judge
Signal DS2 is then a data signal, intensity size of its numerical value corresponding to subsignal SS2.
Control unit 142 couples judging unit 141, receives from judging unit 141 and judges signal DS2, according to judging signal
DS2 decides whether enable gain unit 121 and 131.In the present embodiment, 142 multilevel iudge signal DS2 of control unit is pre- with one
If the size between threshold values.When the numerical value for judging signal DS2 is more than pre-set threshold value, control unit 142 judges that current path is cut
It is transfer mode to change system 10, and the first signal S1 is to flow into signal processing unit 110 by signaling point SIN.Therefore, control unit
142 transmission control signals ES21 are to gain unit 121 with enable gain unit 121.And when the numerical value for judging signal DS2 is less than in advance
If during threshold values, control unit 142 judges current path switching system 10 as reception pattern, the first signal S1 is by the second path
130 flow into signal processing unit 110.Therefore, control unit 142 is transmitted control signal ES22 and is increased with enable to gain unit 131
Beneficial unit 131.
The judgement reason of above-mentioned switching working mode is that, when the first signal S1 is a transmission signal, signal source is road
The electronic installation connected by footpath switched system 10.And when the first signal S1 is a reception signal, signal source is that path switches
A signal launch point outside system 10.In such event just it is found that the intensity when the first signal S1 is transmission signal is big
It is little, there should be considerable degree of difference with the intensity size when the first signal S1 is reception signal.That is, when the first signal
It will be intensity size when receiving signal much larger than the first signal S1 that S1 is intensity size when transmitting signal.Control unit 142
Just the first signal S1 can relatively be judged to receive signal or transmitting signal by subsignal SS2 and pre-set threshold value.
It is noted that the setting of the numerical values recited of pre-set threshold value includes many factors, predominantly the first signal S1
It is poor with the ratio between subsignal SS2, and conversion subsignal SS2 is quantization level when judging signal DS2
（quantization level）Fine degree.In addition to above-mentioned factor, each signal may be also must account for（Such as
One signal S1 and subsignal SS1, SS2 etc.）Power consumption when each path in system is transmitted.Therefore, pre-set threshold value is necessary
Its numerical values recited is set according to above-mentioned factor, and while is adjusted in view of actual situation about implementing.
Also there are many kinds of set-up modes by the mode of control signal ES21, ES22 enable gain unit 121,131.For example,
The power supply of gain unit 121,131 is controlled with control signal ES21, ES22, or in first path 120 and the second path 130
It is upper that switch, control signal ES21 or control signal ES22 for receiving enable gain unit 121 or gain unit 131 waiting are set
When, then turn on first path 120 or the second path 130.When control unit 142 transmits control signal ES21 enable gain unit
When 121, control unit 142 can be set while transmitting control signal ES22 forbidden energy gain unit 131（Control signal is for example set
ES21 and control signal ES22 inversion signal each other）.The present invention is not limited to above-mentioned set-up mode.
Referring again to Fig. 1, via above-mentioned start flow process, path switching system 10 just can be in the way of self-sensing, root
According to transmission signal or the state of reception signal, the mode of operation of toggle path switched system 10.In the present embodiment, path is cut
Change system 10 and be preset as reception pattern, the first signal S1 is received from antenna 200, via the gain unit 131 in the second path 130
After gain intensity, signaling point SIN is sent to by signal processing unit 110 and its electronic installation that connected in other groups
Part.Therefore, in the present embodiment, gain unit 131 is a low-noise amplifier（Low Noise Amplifier,LNA）,
While amplifying the first signal S1, the situation of low noise and low distortion is kept.
And when the first signal S1 flows into signal processing unit 110, that is, the first signal for transmission signal from signaling point SIN
When, circuit unit 140 judges to obtain path switching system 10 through the subsignal SS2 being coupled out by signal processing unit 110
Transfer mode should be converted to.Gain unit 121 in 140 enable first path 120 of circuit unit, in the second path of forbidden energy 131
Gain unit 131 so that subsignal SS1（It is same as the first signal S1）The amplification of permeable gain unit 121, is resent to
Antenna 200.In the present embodiment, gain unit 121 is a power amplifier（Power Amplifier,PA）, for increasing son
Signal SS1（First signal S1）Signal strength signal intensity.As for the internal circuit configuration and set-up mode of power amplifier, the present invention is simultaneously
Do not limit.
By the current signal of 10 self-sensing of path switching system（First signal S1）To transmit signal or receiving signal,
The mode of operation of toggle path switched system 10, path switching system 10 just simultaneously can be in the mode of operations（Reception pattern or
Transfer mode）The lower gain for increasing signal.
According to the difference of actual conditions, gain unit 121 and gain unit 131 are also optionally implemented.Such as first
When signal S1 intensity itself sufficiently achieves the requirement of user, then gain unit need not be set in first path 120
121.When first path 120 is not provided with gain unit 121 or the second path 130 is not provided with gain unit 131, first path
120 or second path 130 then still respectively including one switch, be controlled signal ES21, ES22 control and turn on/cut off first
Path 120 or the second path 130.
In the situation of some actual enforcements, as receive signal the first signal S1 signal strength signal intensity with enough rear ends
（Other components that signaling point SIN is connected）With, but the gain unit 131 in the second path 130 is amplified as having
The intensity close with the first signal S1 as transmission signal.In such event, circuit unit 140 just may therefore cannot be normal
Switch the both of which of the path switching system 10（For example, conversion judges that the quantization level of signal DS2 is not fine etc. enough to reason）.
Therefore, present invention also offers following set-up mode is avoiding above-mentioned problem from producing.
Each component coupling relation in embodiment illustrated in fig. 3 is identical with embodiment illustrated in fig. 1, and in which not repeat.Wherein,
In embodiment illustrated in fig. 3 from unlike embodiment illustrated in fig. 1, in the embodiment shown in fig. 3, also include in the second path 130
Signal processing unit 132 and circuit unit 133.
Fig. 3 is refer to, signal processing unit 132 is coupled between antenna 200 and gain unit 131, is connect from antenna 200
Receive the first signal S1, process the first signal S1 and produce subsignal SS3, SS4, and transmit subsignal SS3 to gain unit 131 with
Gain the first signal S1.In the present embodiment, signal processing unit 132 couples the first signal S1 and produces subsignal SS4, and by the
One signal S1 is converted to subsignal SS3.That is, subsignal SS3 is identical with the first original signal S1, subsignal SS4 is then
There is the proportionate relationship in intensity with the first signal S1.
Circuit unit 133 couples signal processing unit 132 and gain unit 131, receives son from signal processing unit 132
Signal SS4, according to the enable that subsignal SS4 controls gain unit 131, for example, judges whether enable gain according to subsignal SS4
Unit 131.
When 133 enable gain unit 131 of circuit unit, gain unit 131 is according to preset gain value gain subsignal
SS3.Or, when gain unit 131 is according to the intensity of subsignal SS4, a yield value is determined, and according to above-mentioned yield value gain
Subsignal SS3.
Refer to Fig. 4, with embodiment illustrated in fig. 3 except that, embodiment illustrated in fig. 4 provide circuit unit 133,
140 more detailed embodiments.Fig. 4 is refer to, judging unit 1331 and control unit in circuit unit 133, is further comprises
1332.Judging unit 1331 receives subsignal SS4 from signal processing unit 132, and subsignal SS4 is converted to judgement signal
DS1.In the present embodiment, the intensity size conversion subsignal SS4 of 1331 corresponding subsignal SS4 of judging unit is to judge signal
DS1, and signal DS1 is judged then for a data signal, intensity size of its numerical value corresponding to subsignal SS4.
Control unit 1332 couples judging unit 1331, receives from judging unit 1331 and judges signal DS1, according to judgement letter
Number DS21 controls the enable of gain unit 131.In the present embodiment, control unit 1332 multilevel iudge signal DS1 and presets
Size between threshold values.When the numerical value for judging signal DS1 is more than pre-set threshold value, control unit 1332 then judges current first letter
Number S1（Or it is same as the subsignal SS3 of the first signal S1）Intensity reached by force, it is not necessary to increase through gain unit 131 again
Intensity.Therefore, control unit 1332 just transmits control signal ES1 to gain unit 131 with forbidden energy gain unit 131.
On the other hand, when the numerical value for judging signal DS1 is less than pre-set threshold value, control unit 1332 then judges current first
Signal S1（Or it is same as the subsignal SS3 of the first signal S1）Intensity it is excessively faint, the therefore just transmission control of control unit 1332
Signal ES1 processed is to gain unit 131 with enable gain unit 131.And each component coupling relation and work in circuit unit 133
Dynamic principle refer to embodiment illustrated in fig. 2, then not repeat at this.
In fact, in the present embodiment, signal processing unit 110 is identical with the start of signal processing unit 132, circuit list
The start of unit 140 and circuit unit 133 is also identical, only signal processing unit 110 and circuit unit 140, with circuit unit 132
It is different with effect of the circuit unit 133 in path switching system 30.Circuit unit 140 controlled for path switching system 30
Mode of operation（Transfer mode, reception pattern）Switching, and then for gain unit 131 cause controlled by circuit unit 133
Can, and control gain unit 131 is according to the yield value gain signal of how many sizes.
Even it should be noted that circuit unit 133 transmits control signal ES1 to gain unit 131 with forbidden energy gain
During unit 131, therefore the second path 130 also will not be cut off.And in some above-mentioned embodiments, by circuit unit
During 140 switching working mode, the situation of first path 120 or the second path 130 with the presence of disconnection.
In Fig. 3, embodiment illustrated in fig. 4, increase in the second path 130 and be provided with signal processing unit 132 and electricity
Road unit 133, when too strong as the first signal S1 intensity for receiving signal, forbidden energy gain unit 131 so that signal transacting system
System 20,30 is just can be avoided as the first signal S1 intensity and the first signal S1 as transmission signal for receiving signal（Or
First subsignal SS1）Similar intensity, and cause circuit unit 140 cannot correct toggle path switched system 20,30 two kinds of moulds
The situation of formula.
On the other hand, the present invention also provides a kind of path switching system, and the transmitting-receiving for the wireless signal of two kinds of frequencies is entered
The enhanced effect of row.Fig. 5 is the functional block diagram of the path switching system according to depicted in one embodiment of the invention.Refer to Fig. 5,
Wherein to receive and dispatch the first signal SS1（Or subsignal SS1）Each unit, including signal processing unit 110, first path 120,
The coupling relation and start of the second path 130 and circuit unit 140 refers to above-mentioned Fig. 1～embodiment illustrated in fig. 3, here
Then do not repeat.And to receive and dispatch secondary signal S2（Or subsignal SS5）Each unit, including signal processing unit 150, the 3rd tunnel
Footpath 160, the 4th path 170 and circuit unit 180 also refer to the embodiment shown in above-mentioned Fig. 1～Fig. 3, will not be described here.
And except for the difference that, the frequency of the first signal S1 and secondary signal S2 is different.Such as the first signal S1 and second
Signal S2 can respectively meet wireless fidelity（Wireless Fidelity,WiFi）Standard, centre frequency be 2.4G hertz with
And the wireless network signal of 5G hertz, but the present invention is not limited to this.
Path switching system 40 further comprises frequency separation unit 190,191.Frequency separation unit 190 is coupled at signal
Between reason unit 110,150 and signaling point SIN.Signal TS is transmitted when frequency separation unit 190 receives one from signaling point SIN（Example
Signaling point SIN is sent a signal to by wireless network module transmission one such as）, frequency separation unit 190 is i.e. using this transmission signal TS
Frequency（Centre frequency）To judge this transmission signal TS for the first signal S1 or secondary signal S2.When frequency separation unit
190 judge transmit signal TS for the first signal S1 when, then transmit the first signal S1 to signal processing unit 110.
When frequency separation unit 190 judges signal TS to be transmitted for secondary signal S2, then transmit secondary signal S2 to signal
Processing unit 150.On the other hand, when frequency separation unit 190 receives the first signal S1 from signal processing unit 110（Subsignal
SS1）When, the first signal S1 is sent to frequency separation unit 190 external device (ED) connected by signaling point SIN and signaling point SIN.
When frequency separation unit 190 receives secondary signal S2 from signal processing unit 150（Subsignal SS5）When, frequency separation unit 190
Also secondary signal S2 is sent to into signaling point SIN.
Frequency separation unit 191 is coupled in first path 120, the second path 130, the 3rd path 160 and the 4th path
Between 170 and antenna.When frequency separation unit 191 receives signal RS from antenna, frequency separation unit 191 utilizes this
Receive the frequency of signal RS（Centre frequency）To judge that this receives signal RS for the first signal S1 or secondary signal S2.Work as frequency
When separative element 191 judges signal RS to be received for the first signal S1, then transmit the first paths of signal S1 to second 130.Work as frequency
When separative element 190 judges signal RS to be transmitted for secondary signal S2, then transmit secondary signal S2 to the 4th path 170.
In fact, when frequency separation unit 191 judges to receive signal RS for the first signal S1, frequency separation unit 191
First signal S1 can be reached first path 120 and the second path 130 simultaneously.But in path, switching is due to first path 120
It is open circuit when system 40 is reception pattern, therefore the first signal S1 still can only passes through the second path 140.In the same manner, when frequency separation list
When unit 191 judges to receive signal RS for secondary signal S2, secondary signal S2 can be reached the 3rd tunnel by frequency separation unit 191 simultaneously
Footpath 150 and the 4th path 170.But as the 3rd path 120 is open circuit when path switching system 40 is reception pattern, therefore the
Binary signal S2 still can only pass through the 4th path 170.
On the other hand, when frequency separation unit 191 receives the first signal S1 from first path 120（Subsignal SS1）When, frequency
First signal S1 is sent to antenna 200 by rate separative element 191.When frequency separation unit 191 receives second from the 3rd path 160
Signal S2（Subsignal SS5）When, secondary signal S2 is also sent to antenna 200 by frequency separation unit 191.
Therefore, the transmission/reception signal of two kinds of different frequencies is isolated by frequency separation unit 190,191, path is cut
Change system 40 just can with self-sensing and increase by two kinds of different center frequencies signal signal strength signal intensity.
If frequency separation unit 190,191 can isolate more multifrequency radio frequency signal, path switching system
40 also in parallel between frequency separation unit 190,191 can be closed with the coupling of existing signal processing unit, path and circuit unit
It is identical signal processing unit, path and circuit unit.Path switching system 40 just may be used to process more centre frequencies
Different radio frequency signals.The present invention is not limited to above-mentioned.
In addition, the path switching system 40 as shown in Figure 5 only ability with either simplex, that is to say, that when path switching system
When system 40 is operated, only have all the way with time first path 120, the second path 130, the 3rd path 160 and the 4th path 170
Footpath has signal to pass through, and comes the path of switched conductive through circuit unit 140,180.But, through frequency separation unit
190th, 191 redesign and other components and path adjustment with the wire of coupled components in front and back, path switching system 40 can also
For the path switching system of a multitask.The present invention is not limited to above-mentioned embodiment.
The present invention also provides a kind of path switching method, it is adaptable to a path switching system, wherein path switching system bag
Include one first signal processing unit, a first path, one second path, one first circuit unit, one first gain of wherein at least
Unit is arranged at the first path or second path.Fig. 6 is the path switching method according to depicted in one embodiment of the invention
Flow chart.Fig. 6 is refer to, first in step S601, the first signal to the first signal processing unit, the first signal transacting is received
Unit produces the first subsignal and the second subsignal according to the first signal.Then, in step S602, the first subsignal of transmission is extremely
First path.Then in step S603, the second subsignal to the first circuit unit is transmitted, the first circuit unit is sub according to second
Signal judges whether enable at least one first gain unit.The detailed embodiment of said method can refer to the enforcement of Fig. 1～Fig. 5
Example explanation, in which not repeat.
It is noted that the present invention is not only defined in be arranged between antenna and wireless communication module, other
Similar concept, is needed by the use of signal strength signal intensity to switch the setting of foundation as path, also can be cut using path provided by the present invention
Change system.
Claims (13)
1. a path switching system, it is characterised in that the path switching system is included：
One first signal processing unit, its receive one first signal and produce after first signal processing unit processes one first
Subsignal and one second subsignal；
One first path, one end of the first path receive first subsignal, the other end of the first path export this first
Subsignal is to an antenna；
One second path, the one end in second path receive first signal from antenna transmission, second path it is another
First signal that end output antenna is transmitted；
At least one first gain unit, which is arranged at the first path or second path, to gain first subsignal or
First signal；
One first circuit unit, which receives second subsignal, and according to second subsignal decide whether enable this at least one
First gain unit, first circuit unit include：One first judging unit, couples first signal processing unit, and receiving should
Second subsignal is simultaneously changed second subsignal and judges signal into one first；One first control unit, couples first judgement single
Unit, first judges signal according to this, decides whether enable at least one first gain unit；First control unit compares this
First judges the size between signal and a predetermined threshold value, judges first signal to receive signal or transmission signal.
2. path switching system according to claim 1, it is characterised in that second subsignal is by first signal transacting
Unit is separated or is coupled produced by first signal.
3. path switching system according to claim 1, it is characterised in that be arranged at first gain of the first path
Unit includes a power amplifier；And be arranged at first gain unit in second path and include a low-noise amplifier.
4. path switching system according to claim 1, it is characterised in that the system also includes：
One secondary signal processing unit, its receive a secondary signal and produce after the secondary signal processing unit processes one the 3rd
Subsignal and one the 4th subsignal；
One the 3rd path, the one end in the 3rd path receive the 3rd subsignal, and the other end in the 3rd path exports the 3rd
Subsignal is to the antenna；
One the 4th path, the one end in the 4th path receive the secondary signal from antenna transmission, the 4th path it is another
The secondary signal that end output antenna is transmitted；
At least one second gain unit, which is arranged at the 3rd path or the 4th path, to the 3rd subsignal of gain or
The secondary signal；
One second circuit unit, which receives the 4th subsignal, and according to the 4th subsignal decide whether enable this at least 1 the
Two gain units.
5. path switching system according to claim 4, it is characterised in that the system also includes：
One first frequency separative element, which couples first signal processing unit and the secondary signal processing unit, from the system
External reception one transmits signal, judges the transmission signal for first signal or second letter according to the frequency of the transmission signal
Number, when the transmission signal is first signal, first signal is transmitted to first signal processing unit, and work as the transmission
When signal is the secondary signal, the secondary signal is transmitted to the secondary signal processing unit.
6. path switching system according to claim 4, it is characterised in that the system also includes：
One second frequency separative element, which couples the first path, the second path, the 3rd path and the 4th path；
When signal is received from the antenna, according to the frequency of the reception signal, the second frequency separative element judges that this connects
The collection of letters number is first signal or the secondary signal, when the reception signal is first signal, the second frequency separative element
First signal is transmitted to second path, and when the reception signal is the secondary signal, the second frequency separative element
The secondary signal is transmitted to the 4th path；
And when the second frequency separative element receives first subsignal or the 3rd from the first path or the 3rd path
During subsignal, the second frequency separative element transmits first subsignal or the 3rd subsignal to the antenna.
7. path switching system according to claim 4, it is characterised in that the 4th subsignal is processed by the secondary signal
Unit is separated or is coupled produced by the secondary signal.
8. path switching system according to claim 4, it is characterised in that the second circuit unit includes：
One second judging unit, which couples the secondary signal processing unit, receives the 4th subsignal and changes the 4th son letter
Number signal is judged for one second；
One second control unit, which couples second judging unit, second judges signal according to this, decide whether enable this at least
One second gain unit.
9. path switching system according to claim 4, it is characterised in that be arranged at second gain in the 3rd path
Unit includes a power amplifier；And be arranged at second gain unit in the 4th path and include a low-noise amplifier.
10. a kind of path switching method, which is applied to a path switching system, and wherein the system includes one first signal transacting list
Unit, a first path, one second path, one first circuit unit, one first gain unit of wherein at least are arranged at the first via
Footpath or second path, it is characterised in that the path switching method includes：
One first signal is received to first signal processing unit, first signal processing unit produces one according to first signal
First subsignal and one second subsignal；
First subsignal is transmitted to the first path；
Second subsignal is transmitted to first circuit unit, first circuit unit judges whether to cause according to second subsignal
Can at least one first gain unit；
Wherein, first circuit unit includes：One first judging unit, one first control unit；The path switching method is also wrapped
Include：First judging unit receives second subsignal and changes second subsignal and judges signal into one first；First control
Unit processed compares first size judged between signal and a predetermined threshold value, judge first signal for receive signal or
It is transmission signal.
11. path switching methods according to claim 10, it is characterised in that the system is also including secondary signal process
Unit, one the 3rd path, one the 4th path and a second circuit unit, one second gain unit of wherein at least be arranged at this
Three paths or the 4th path, methods described also include：
A secondary signal is received to the secondary signal processing unit, the secondary signal processing unit produces one according to the secondary signal
3rd subsignal and one the 4th subsignal；
The 3rd subsignal is transmitted to the 3rd path；
The 4th subsignal is transmitted to the second circuit unit, the second circuit unit judges whether to cause according to the 4th subsignal
Can at least one second gain unit.
12. path switching methods according to claim 11, it is characterised in that the system is also including a first frequency point
From unit, the reception first signal to first signal processing unit or the reception secondary signal are to the secondary signal
Also included before the step of processing unit：
One is received from its exterior and transmits signal, and be sent to the first frequency separative element, the first frequency separative element
Judge that the transmission signal is first signal or the secondary signal according to the frequency of the transmission signal；
When the transmission signal is first signal, first signal is transmitted to first signal processing unit, and work as the biography
When the number of delivering letters is the secondary signal, the secondary signal is transmitted to the secondary signal processing unit.
13. path switching methods according to claim 11, it is characterised in that the system also includes an antenna and coupling
One second frequency separative element of the antenna, the reception first signal to first signal processing unit or the reception should
Secondary signal also includes to before the step of the secondary signal processing unit：
Signal is received from the antenna, and the reception signal is transmitted to the second frequency separative element, should；
The second frequency separative element according to the frequency of the reception signal judge the reception signal for first signal or this second
Signal；
When the reception signal is first signal, first signal is transmitted to second path, and when the reception signal is
During the secondary signal, the secondary signal is transmitted to the 4th path；
And when first subsignal or three subsignals is received from the first path or the 3rd path, transmit this first
Subsignal or the 3rd subsignal to the second frequency separative element, the second frequency separative element transmit first subsignal or
3rd subsignal is to the antenna.
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| CN201310084401.5A CN104065394B (en) | 2013-03-18 | 2013-03-18 | Path switching system and the path switching method |
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| CN104065394B true CN104065394B (en) | 2017-04-05 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1604491A (en) * | 2003-09-30 | 2005-04-06 | 夏普株式会社 | Wireless communication circuit, wireless communication apparatus, and wireless communication system |
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| TWI440317B (en) * | 2006-05-08 | 2014-06-01 | Hitachi Metals Ltd | High frequency circuit, high frequency component and communication device |
| CN101207918B (en) * | 2006-12-18 | 2012-04-11 | 启碁科技股份有限公司 | Stand-by communication device simultaneous for multi mobile communication systems |
| US7702296B2 (en) * | 2007-08-01 | 2010-04-20 | Mediatek Usa Inc. | Transmit/receive switch |
| CN101471636B (en) * | 2007-12-26 | 2011-11-23 | 财团法人工业技术研究院 | Amplifier with variable gain and high dynamic range |
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