CN209692736U - A kind of radio-frequency unit and its power amplification circuit - Google Patents
A kind of radio-frequency unit and its power amplification circuit Download PDFInfo
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- CN209692736U CN209692736U CN201822101170.5U CN201822101170U CN209692736U CN 209692736 U CN209692736 U CN 209692736U CN 201822101170 U CN201822101170 U CN 201822101170U CN 209692736 U CN209692736 U CN 209692736U
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Abstract
This application discloses a kind of radio-frequency unit and its power amplification circuits.The power amplification circuit includes: main road circuit, comprising: power amplifier, for amplifying to radiofrequency signal, radiofrequency signal includes at least the first working frequency range and the second working frequency range；Bypass circuit, comprising: connecting line is connected between the input terminal of power amplifier and the output end of power amplifier, and connecting line includes at least the first tie point, the second tie point, third tie point and the 4th tie point；At least first branch, second branch, third branch and the 4th branch；Wherein, the first tie point is grounded by the first branch, and the second tie point is grounded by second branch, and third tie point passes through the 4th grounding by third grounding, the 4th tie point.In this way, it can be realized the power amplification of more working frequency range radiofrequency signals.
Description
Technical field
This application involves the technical field of radio frequency, it is related to a kind of radio-frequency unit and its power amplification circuit.
Background technique
The power amplification circuit with bypass functionality of the prior art is provided with main road and bypass, and main road is provided with power and puts
Big device；Bypass is being provided with diode at a distance of the position of 1/4 wavelength of working frequency range with main road, and bypass is grounded by diode.
Present inventor has found in long-term R&D work, in some radio-frequency units, with bypass functionality
The working frequency range range of power amplification circuit is often narrow, limits the application of power amplification circuit.
Utility model content
The application is mainly solving the technical problems that provide a kind of radio-frequency unit and its power amplification circuit, to realize multiplexing
Make the power amplification of frequency range radiofrequency signal.
In order to solve the above technical problems, the technical solution that the application uses is: a kind of power amplification circuit is provided, it should
Power amplification circuit includes: main road circuit, comprising: power amplifier, for amplifying to radiofrequency signal, radiofrequency signal is at least
Including the first working frequency range and the second working frequency range；Bypass circuit, comprising: connecting line is connected to the input terminal of power amplifier
Between the output end of power amplifier, connecting line includes at least the first tie point, the second tie point, third tie point and the 4th
Tie point；At least first branch, second branch, third branch and the 4th branch；Wherein, the first tie point passes through the first branch
Ground connection, the second tie point are grounded by second branch, and third tie point passes through the 4th by third grounding, the 4th tie point
Grounding.
Wherein, the distance between input terminal of the first tie point and power amplifier is 1/4 wavelength of the first working frequency range,
The distance between input terminal of second tie point and power amplifier be the second working frequency range 1/4 wavelength, third tie point and
The distance between output end of power amplifier is 1/4 wavelength of the first working frequency range, the 4th tie point and power amplifier
The distance between output end is 1/4 wavelength of the second working frequency range.
Wherein, the first branch includes first diode and the first resonance circuit, first diode respectively with the first tie point
And first resonance circuit connection, the first grounded resonator；Second branch include the second diode and the second resonance circuit, second
Diode is connect with the second tie point and the second resonance circuit respectively, the second grounded resonator；Third branch includes the three or two
Pole pipe and third resonance circuit, third diode are connect with third tie point and third resonance circuit respectively, third resonance circuit
Ground connection；4th branch includes the 4th diode and the 4th resonance circuit, and the 4th diode is humorous with the 4th tie point and the 4th respectively
Vibration circuit connection, the 4th grounded resonator.
Wherein, the first resonance circuit includes the first inductance and first capacitor, and the one of one end of the first inductance and first capacitor
End is grounded, and the other end of the first inductance and the other end of first capacitor are connect with the anode of first diode；Second resonance
Circuit includes the second inductance and the second capacitor, and one end of the second inductance and one end of the second capacitor be grounded, the second inductance it is another
One end is connect with the anode of the second diode with the other end of the second capacitor；Third resonance circuit includes third inductance and third
Capacitor, one end of third inductance are grounded with one end of third capacitor, the other end of third inductance and the other end of third capacitor
It is connect with the anode of third diode；4th resonance circuit include the 4th inductance and the 4th capacitor, one end of the 4th inductance with
One end of 4th capacitor is grounded, and the other end of the 4th inductance and the other end of the 4th capacitor connect with the anode of the 4th diode
It connects.
Wherein, the centre frequency of the resonance frequency of the first branch and the resonance frequency of third branch with the first working frequency range
Identical, the resonance frequency of the resonance frequency of second branch and the 4th branch is identical as the centre frequency of the second working frequency range.
Wherein, when power amplifier amplifies radiofrequency signal, first diode, the second diode, third diode
And the 4th diode current flow, so that bypass circuit is opened a way.
Wherein, power amplifier disconnect radio signal transmission when, first diode, the second diode, third diode and
4th diode disconnects, bypass circuit short circuit, so that connecting line transmitting radio frequency signal.
In order to solve the above technical problems, another technical solution that the application uses is: providing a kind of radio-frequency unit, this is penetrated
Frequency device includes above-mentioned power amplifier.
In order to solve the above technical problems, another technical solution that the application uses is: providing a kind of power amplifier, function
Rate amplifying circuit includes: main road circuit, comprising: power amplifier, for amplifying to radiofrequency signal, radiofrequency signal is at least wrapped
Include the first working frequency range；Bypass circuit, comprising: connecting line, be connected to power amplifier input terminal and power amplifier it is defeated
Between outlet, connecting line includes at least the first tie point；At least first branch, the first tie point are grounded by the first branch.
Wherein, the distance between input terminal of the first tie point and power amplifier is 1/4 wavelength of the first working frequency range.
The beneficial effect of the application is: being different from the prior art, the embodiment of the present application power amplification circuit includes: main road electricity
Road, comprising: power amplifier, for amplifying to radiofrequency signal, radiofrequency signal includes at least the first working frequency range and second
Working frequency range；Bypass circuit, comprising: connecting line, be connected to power amplifier input terminal and power amplifier output end it
Between, connecting line includes at least the first tie point, the second tie point, third tie point and the 4th tie point；At least first branch,
Two branches, third branch and the 4th branch；Wherein, the first tie point is grounded by the first branch, and the second tie point passes through the
Two groundings, third tie point pass through the 4th grounding by third grounding, the 4th tie point.Pass through this side
Formula is at least distinguished when power amplifier amplifies at least radiofrequency signal of the first working frequency range and the second working frequency range
By the way that the first branch of the first tie point is arranged in and third branch the penetrating the first working frequency range of third tie point is arranged in
Frequency signal leads ground, the second branch by the way that the second tie point is arranged in and the 4th branch of the 4th tie point is arranged in by the second work
The radiofrequency signal for making frequency range leads ground, and to reduce influence of the bypass circuit to main road circuit, therefore, the application can be realized multiplexing work
The power amplification of frequency range radiofrequency signal.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the application
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the circuit diagram with the power amplification circuit of bypass functionality；
Fig. 2 is the circuit diagram of the power amplification circuit of the application first embodiment；
Fig. 3 is the circuit diagram of the power amplification circuit of the application second embodiment；
Fig. 4 is the circuit diagram of the power amplification circuit of the application 3rd embodiment；
Fig. 5 is the circuit diagram of the power amplification circuit of the application fourth embodiment；
Fig. 6 is the circuit diagram of the power amplification circuit of the 5th embodiment of the application；
Fig. 7 is the circuit diagram of the power amplification circuit of the application sixth embodiment；
Fig. 8 is the circuit diagram of the power amplification circuit of the 7th embodiment of the application；
Fig. 9 is the structural schematic diagram of the radio-frequency unit of one embodiment of the application.
Specific embodiment
With reference to the accompanying drawings and examples, the application is described in further detail.It is emphasized that following implement
Example is merely to illustrate the application, but is not defined to scope of the present application.Likewise, following embodiment is only the portion of the application
Point embodiment and not all embodiments, institute obtained by those of ordinary skill in the art without making creative efforts
There are other embodiments, shall fall in the protection scope of this application.
The orientation of instructions such as term "inner", "outside" in the description and claims of this application and above-mentioned attached drawing or
Positional relationship be orientation based on the figure or positional relationship or this application product using when the orientation usually put
Or positional relationship, description the application merely for convenience, which closes, simplifies description, rather than indicate or imply signified device or
Person's element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limitation to the application.
In addition, the description and claims of this application and term " first ", " second ", " third " in above-mentioned attached drawing
(if present)s such as " the 4 " are to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It answers
The data that the understanding uses in this way are interchangeable under appropriate circumstances, so that embodiments herein described herein for example can
Implemented with the sequence other than those of illustrating or describing herein.In addition, term " includes " and " having " and they
Any deformation, it is intended that cover and non-exclusive include.
As shown in Figure 1, Fig. 1 is the circuit diagram with the power amplification circuit of bypass functionality.In Fig. 1, radio frequency letter
Number output end 104 can be reached from input terminal 103 by main road circuit 101 and bypass circuit 102, wherein main road circuit 101 is set
It is equipped with power amplifier 105, the connecting line 106 of bypass circuit 102 is the working frequency 1/ of radiofrequency signal apart from main road circuit 101
4 wavelength locations are provided with diode 107.
When main road circuit 101 works normally, i.e., when power amplifier 105 amplifies radiofrequency signal, control two poles
Pipe 107 is connected, and radiofrequency signal leads ground by diode 107.Due to the impedance of the connecting line 106 of 1/4 wavelength length L of working frequency
Variation effect, i.e. length L are 1/4 wavelength of center frequency point of working frequency range, and connecting line 106 is in relative to main road circuit 101 and opens
Line state；Therefore, bypass circuit 102 will not have an impact the radio signal transmission of main road circuit 101.Work as power amplifier
105 or main road circuit 101 break down, when not working normally, control diode 107 disconnect, radiofrequency signal through bypass electricity
Road 102 is transmitted to output end 104 from input terminal 103.
But above-mentioned power amplification circuit is only applicable to narrow bandwidth radiofrequency signal, because of the company of diode 107 and connecting line 106
It is fixed for connecing position, that is to say, that the setting position of diode 107 and the working frequency range of radiofrequency signal correspond, i.e., this sets
Distance of the seated position apart from main road circuit 101 is 1/4 wavelength of the working frequency range.Therefore, when radiofrequency signal has wider frequency
Band will lead between the setting position of diode 107 and 1/4 wavelength that there is a certain error when having multiple working frequency range, for
Some frequency points or frequency range, application condition is small, and for other frequency point or frequency range, application condition is big, therefore, diode
107 setting, which is instead formed the operating frequency range of above-mentioned power amplification circuit, to be restricted.
To solve the above problems, the application proposes a kind of power amplification circuit, as shown in Fig. 2, Fig. 2 is that the application first is real
Apply the circuit diagram of the power amplification circuit of example.The power amplification circuit 201 of the present embodiment is used for multiple working frequency range
Radiofrequency signal amplifies, and includes at least the first working frequency range and the second working frequency range.The power amplification circuit 201 of the present embodiment
Including main road circuit 202 and bypass circuit 203；Wherein, main road circuit 202 includes power amplifier 204, power amplifier 204
Input terminal 205 receive radiofrequency signal, power amplifier 204 for being amplified to radiofrequency signal, power amplifier 204 it is defeated
Outlet 206 exports amplified radiofrequency signal.
Wherein, bypass circuit 203 includes connecting line 207 and at least first branch 208, second branch 209, third branch
210, the 4th branch 211.Wherein, connecting line 207 is connected to the input terminal 205 and power amplifier 204 of power amplifier 204
Between output end 206, connecting line 207 includes at least the first tie point 212, the second tie point 213, third tie point 214 and the
Four tie points 215；First tie point 212 is grounded by the first branch 208, and the second tie point 213 is connect by second branch 209
Ground, third tie point 214 are grounded by third branch 210, and the 4th tie point 215 is grounded by the 4th branch 211.
It is different from the prior art, the present embodiment power amplification circuit 201 is in power amplifier 204 at least first work frequency
When section and the radiofrequency signal of the second working frequency range amplify, at least pass through first that the first tie point 212 is set respectively
The radiofrequency signal of first working frequency range is led ground, passes through setting by road 208 and the third branch 210 that third tie point 214 is arranged in
The second tie point 213 second branch 209 and the 4th branch 211 of the 4th tie point 215 is set by the second working frequency range
Radiofrequency signal lead ground, to reduce influence of the bypass circuit 203 to main road circuit 202, therefore, the application can be realized multiplexing work
The power amplification of frequency range radiofrequency signal.
Optionally, the distance between input terminal 205 of first tie point 212 of the present embodiment and power amplifier 204 f1
For 1/4 wavelength of the first working frequency range, the distance between input terminal 205 of the second tie point 213 and power amplifier 204 h1 is
The distance between the output end 206 of 1/4 wavelength of the second working frequency range, third tie point 214 and power amplifier 204 f2 is the
The distance between the output end 206 of 1/4 wavelength of one working frequency range, the 4th tie point 215 and power amplifier 204 h2 is second
1/4 wavelength of working frequency range.
The radiofrequency signal frequency range of the present embodiment is wider, has multiple working frequency range, multiple tie points and radiofrequency signal it is more
1/4 wavelength of the centre frequency of a working frequency range is arranged in a one-to-one correspondence.1/4 wavelength of working frequency range described in the present embodiment refers to
1/4 wavelength of the centre frequency of the working frequency range.
By above-mentioned analysis it is found that the impedance conversion effect of the connecting line 207 due to 1/4 wavelength of working frequency range, a certain
When the radiofrequency signal of working frequency range leads ground through corresponding tie point and corresponding branch, the radiofrequency signal of the working frequency range is in the company
Junction is opened a way relative to main road circuit 202, i.e., bypass circuit 203 will not be to the radio frequency of the working frequency range on main road circuit 202
The transmission of signal has an impact.The present embodiment on connecting line 207 by being arranged multiple tie points and multiple branches, so that multiple
The radiofrequency signal of working frequency range is not by bypass circuit 203, so that bypass circuit 203 is opened a way relative to main road circuit 202, into
One step reduces influence of the bypass circuit 203 to main road circuit 202.
Optionally, the first branch 208 of the present embodiment includes first diode D1 and the first resonance circuit the 216, the 1st
Pole pipe D1 is connect with the first tie point 212 and the first resonance circuit 216 respectively, the first resonance circuit 216 ground connection；Second branch
209 include the second diode D2 and the second resonance circuit 217, and the second diode D2 is humorous with the second tie point 213 and second respectively
The circuit 217 that shakes connects, the second resonance circuit 217 ground connection；Third branch 210 includes third diode D3 and third resonance circuit
218, third diode D3 is connect with third tie point 214 and third resonance circuit 218 respectively, and third resonance circuit 218 is grounded；
4th branch 211 include the 4th diode D4 and the 4th resonance circuit 219, the 4th diode D4 respectively with the 4th tie point 215
And the 4th resonance circuit 219 connect, the 4th resonance circuit 219 ground connection.
Wherein, first diode D1, the second diode D2, third diode D3 and the 4th diode D4 anode and even
Wiring 207 connects, and the cathode of first diode D1 is connect with the first resonance circuit 216, the cathode and second of the second diode D2
Resonance circuit 217 connects, and the cathode of third diode D3 connect with third resonance circuit 218, the cathode of the 4th diode D4 and
The connection of 4th resonance circuit 219.
In other embodiments, diode can also be replaced with other switch elements, as shown in figure 3, the present embodiment power
The first switch 302 of amplifying circuit 301 is connect with the first tie point 303 and the first resonance circuit 304 respectively, second switch 305
Connect respectively with the second tie point 306 and the second resonance circuit 307, third switch 308 respectively with third tie point 309 and third
Resonance circuit 310 connects, and the 4th switch 311 is connect with the 4th tie point 312 and the 4th resonance circuit 313 respectively.It is put in power
When big device 314 works normally, control first switch 302, second switch 305, third switch 308 and the 4th switch 311 closure, with
Radiofrequency signal is set to lead ground, bypass circuit 315 is opened a way relative to main road circuit 316, is disconnected radiofrequency signal in power amplifier 314 and is passed
When defeated, control first switch 302, second switch 305, third switch 308 and the 4th switch 311 are disconnected, and keep bypass circuit 315 short
Road, to be transmitted to radiofrequency signal.
Certainly, in other embodiments, above-mentioned diode can also be replaced using switch element, and does not limit above-mentioned switch
Element is same type element.
As shown in Fig. 2, the bypass circuit 203 of the present embodiment from multiple tie points be provided with it is a plurality of lead ground leg, every is led
Ground leg is provided with a diode, to reduce the loss to the radiofrequency signal of each working frequency range, needs to guarantee every and leads twelve Earthly Branches
Road can only to a certain working frequency range radiofrequency signal short circuit, and to the radiofrequency signal of other working frequency range open a way, for this purpose, this implementation
Example is led at every is arranged a resonance circuit in ground leg, to adjust the impedance of the branch, to select by corresponding with tie point
The radiofrequency signal of working frequency range, and the radiofrequency signal of other working frequency range is forbidden to pass through.
The foregoing circuit structure of the present embodiment power amplification circuit 201 can pass through the first branch 208 and second branch 209
Reduce influence of the bypass circuit 203 to the radiofrequency signal for being input to power amplifier 204, and can by third branch 210 and
4th branch 211 reduces influence of the bypass circuit 203 to the radiofrequency signal exported from power amplifier 204.
It is found that in the present embodiment, when power amplifier 204 works normally, it can not only pass through the first branch 208 and the
Two branches 209 cut off shunting of the bypass circuit 203 to the radiofrequency signal for being input to power amplifier 204, and can also be further
Pass through the shunting for the radiofrequency signal that third branch 210 and the cutting of the 4th branch 211 are exported from power amplifier 204, therefore, third
The setting of branch 210 and the 4th branch 211 can be further reduced influence of the bypass circuit 203 to main road circuit 202.
Certainly, in other embodiments, the first branch and second branch can also be only arranged in bypass circuit.
Optionally, the resonance frequency of the first branch 208 of the present embodiment and the resonance frequency of third branch 210, i.e., first
The resonance frequency of resonance circuit 216 and the resonance frequency of third resonance circuit 218 with the centre frequency phase of the first working frequency range
Together, to improve the precision that the first resonance circuit 216 and third resonance circuit 218 select the first working frequency range, second branch
The resonance frequency of 209 resonance frequency and the 4th branch 211, the i.e. resonance frequency of the second resonance circuit 217 and the 4th resonance electricity
The resonance frequency on road 219 is identical as the centre frequency of the first working frequency range, to improve the second resonance circuit 217 and the 4th resonance
The precision that circuit 218 selects the second working frequency range.
Specifically, as shown in Fig. 2, the connecting line 207 of the present embodiment power amplification circuit 201 be provided with two pairs of tie points and
Two pairs of branches respectively correspond the first working frequency range and the second working frequency range, when power amplifier 204 amplifies radiofrequency signal
When, first diode D1, the second diode D2, third diode D3 and the 4th diode D4 conducting, the first resonance circuit 216 and
For the selection of third resonance circuit 218 by the ground connection of the radiofrequency signal of the first working frequency range, the second resonance circuit 217 and the 4th resonance are electric
The selection of road 218 is by the ground connection of the radiofrequency signal of the first working frequency range, so that bypass circuit 203 is equivalent to the open circuit of main road circuit 202；
When main road circuit 202 disconnects radio signal transmission, first diode D1, the second diode D2, third diode D3 and the 4th
Diode D4 is disconnected, 203 short circuit of bypass circuit, so that 203 transmitting radio frequency signal of bypass circuit.
Certainly, in other embodiments, radiofrequency signal may include the work frequency of 3 (as shown in Figure 4) or 3 or more
Section, correspondingly, 3 pairs or 3 pairs or more of tie point and branch need to be arranged in the bypass circuit of power amplification circuit, do not repeat here.
Optionally, as shown in Fig. 2, first resonance circuit 216 of the present embodiment includes the first inductance L1 and first capacitor C1,
First inductance L1 and first capacitor C1 is arranged in parallel, i.e., one end of the first inductance L1 is grounded with one end of first capacitor C1, the
The other end of one inductance L1 is connect with the cathode of first diode D1 with the other end of first capacitor C1；Second resonance circuit
217 include that the second inductance L2 and the second capacitor C2, the second inductance L2 are arranged in parallel with the second capacitor C2, i.e. the one of the second inductance L2
End and one end of the second capacitor C2 are grounded, the other end of the other end of the second inductance L2 and the second capacitor C2 with the two or two pole
The cathode of pipe D2 connects；Third resonance circuit 218 includes third inductance L2 and third capacitor C3, third inductance L3 and third capacitor
C3 is arranged in parallel, i.e. one end of third inductance L3 and one end of third capacitor C3 is grounded, the other end of third inductance L3 and
The other end of three capacitor C3 is connect with the cathode of third diode D3；4th resonance circuit 219 includes the 4th inductance L4 and the
Four capacitor C4, the 4th inductance L4 C4 setting in parallel with the 4th capacitor, i.e. one end of one end of the 4th inductance L4 and the 4th capacitor C4
It is grounded, the other end of the 4th inductance L4 is connect with the cathode of the 4th diode D4 with the other end of the 4th capacitor C4.
Certainly, in other embodiments, as shown in figure 5, Fig. 5 is the electricity of the power amplification circuit of the application fourth embodiment
Road schematic diagram.First resonance circuit 502 of this implementation power amplification circuit 501 further comprises on that basi of the above embodiments
One resistance R1, first resistor R1 connect with the first inductance L1, and first capacitor C1 is in parallel with first resistor R1 and the first inductance L1；The
Two resonance circuits 503 further comprise second resistance R2, second resistance R2 and the second inductance L2 string on that basi of the above embodiments
Connection, the second capacitor C2 are in parallel with second resistance R2 and the second inductance L2；Third resonance circuit 504 on that basi of the above embodiments into
One step includes 3rd resistor R3, and 3rd resistor R3 connects with third inductance L3, third capacitor C3 and 3rd resistor R3 and third electricity
It is in parallel to feel L3；4th resonance circuit 505 further comprises the 4th resistance R4 on that basi of the above embodiments, the 4th resistance R4 and
Four inductance L4 series connection, the 4th capacitor C4 are in parallel with the 4th resistance R4 and the 4th inductance L4.
Certainly, in other embodiments, above-mentioned resonance electricity can also be replaced using frequency selection circuit or other resonance circuits
Road, and do not limit whether each resonance circuit is same circuits.
The application it is further proposed that the 5th embodiment power amplification circuit, as shown in fig. 6, the present embodiment power amplification electricity
Road 601 directly controls the switch of multiple switch element 603 by the operating current on power amplifier 602.Specifically, in power
When amplifier 602 amplifies radiofrequency signal, there is operating current on power amplifier 602, be high level, high level control is more
A switch element 603 is connected；When power amplifier 602 disconnects radio signal transmission, thereon without operating current or work
Electric current very little, is low level, and level controls multiple switch element 603 and disconnects.
Certainly, in other embodiments, as shown in fig. 7, Fig. 7 is the structure of the application power amplification circuit sixth embodiment
Schematic diagram.The present embodiment power amplification circuit 701 further comprises detector 702 and controller on the basis of the above embodiments
703, wherein detector 702 is connect with power amplifier 704 and controller 703 respectively, and detector 702 is put for detecting power
The working condition of big device 704 passes the first testing result when detecting that power amplifier 704 transmits radiofrequency signal
It is defeated by controller 703, controller 703 generates the first control instruction control multiple switch element 705 according to the first testing result and leads
It is logical；When detecting that power amplifier 704 transmits radiofrequency signal, the first testing result is transferred to controller 703, is controlled
Device 703 processed generates the control conducting of multiple switch element 705 of the first control instruction according to the first testing result and disconnects.
Certainly, in other embodiments, multiple switch element can also individually be controlled.
The application it is further proposed that the 7th embodiment power amplification circuit, as shown in figure 8, the present embodiment power amplification electricity
Road 801 is for amplifying the radiofrequency signal of at least the first working frequency range.The present embodiment power amplification circuit 801 includes main road
Circuit 802 and bypass circuit 803；Wherein, main road circuit 802 includes power amplifier 804, the input terminal of power amplifier 804
805 receive radiofrequency signal, and power amplifier 804 is for amplifying radiofrequency signal, the output end 806 of power amplifier 804
Export amplified radiofrequency signal.
Wherein, bypass circuit 803 includes connecting line 807 and at least the first branch 808, connecting line 807 are connected to power and put
Between the big input terminal 805 of device 804 and the output end 806 of power amplifier 804, connecting line 807 includes at least the first tie point
809；First tie point 809 is grounded by the first branch 808.
It is different from the prior art, the present embodiment power amplification circuit 801 is in power amplifier 804 at least first work frequency
When the radiofrequency signal of section amplifies, at least first is worked by the way that the first branch 808 of the first tie point 809 is arranged in respectively
The radiofrequency signal of frequency range leads ground, and to reduce influence of the bypass circuit 803 to main road circuit 802, therefore, the application can realized
At least the power amplification of a working frequency range radiofrequency signal while, reduce influence of the bypass circuit 803 to main road circuit 802.
About 801 principles and structure of power amplification circuit, do not repeat here.
The application further provides for a kind of radio-frequency unit, as shown in figure 9, Fig. 9 is one embodiment of the application radio-frequency unit
Structural schematic diagram.The present embodiment radio-frequency unit 901 includes power amplification circuit 902, wherein power amplification circuit 902 can be upper
The revealed power amplification circuit of embodiment is stated, details are not described herein.
In conclusion the power amplification circuit power amplification circuit of the application includes: main road circuit, comprising: power amplification
Device, for amplifying to radiofrequency signal, radiofrequency signal includes at least the first working frequency range and the second working frequency range；Bypass electricity
Road, comprising: connecting line is connected between the input terminal of power amplifier and the output end of power amplifier, and connecting line at least wraps
Include the first tie point, the second tie point, third tie point and the 4th tie point；At least first branch, second branch, third branch
And the 4th branch；Wherein, the first tie point is grounded by the first branch, and the second tie point is grounded by second branch, third
Tie point passes through the 4th grounding by third grounding, the 4th tie point.In this way, in power amplifier pair
When at least the radiofrequency signal of the first working frequency range and the second working frequency range amplifies, at least respectively by setting in the first connection
The radiofrequency signal of first working frequency range is led ground, passes through setting by the first branch of point and the third branch that third tie point is arranged in
The second tie point second branch and the 4th branch of the 4th tie point be set lead the radiofrequency signal of the second working frequency range
Ground, to reduce influence of the bypass circuit to main road circuit, therefore, the application can be realized the power of more working frequency range radiofrequency signals
Amplification.
It should be noted that the above various embodiments belongs to same application design, the description of each embodiment emphasizes particularly on different fields, In
Not detailed place is described in separate embodiment, can refer to the description in other embodiments.It is appreciated that each embodiment of the application can
To be used alone, can also be used in conjunction with the technical characteristic in other embodiments, the combination of each embodiment of the application still falls within this
Within the protection scope of application.
Protection circuit and control system provided by the embodiment of the present application are described in detail above, it is used herein
The principle and implementation of this application are described for specific case, and the above embodiments are only used to help understand
The present processes and its core concept；At the same time, for those skilled in the art is having according to the thought of the application
There will be changes in body embodiment and application range, in conclusion the content of the present specification should not be construed as to the application
Limitation.
Claims (8)
1. a kind of power amplification circuit, which is characterized in that the power amplification circuit includes:
Main road circuit, comprising:
Power amplifier, for amplifying to radiofrequency signal, the radiofrequency signal includes at least the first working frequency range and second
Working frequency range；
Bypass circuit, comprising:
Connecting line is connected between the input terminal of the power amplifier and the output end of the power amplifier, the connection
Line includes at least the first tie point, the second tie point, third tie point and the 4th tie point；
At least first branch, second branch, third branch and the 4th branch；Wherein, first tie point passes through described the
One grounding, second tie point are grounded by the second branch, and the third tie point passes through the third branch
Ground connection, the 4th tie point pass through the 4th grounding；
Wherein, the distance between input terminal of first tie point and the power amplifier is first working frequency range
The distance between input terminal of 1/4 wavelength, second tie point and the power amplifier is second working frequency range
The distance between output end of 1/4 wavelength, the third tie point and the power amplifier is first working frequency range
The distance between output end of 1/4 wavelength, the 4th tie point and the power amplifier is second working frequency range
1/4 wavelength.
2. power amplification circuit according to claim 1, which is characterized in that the first branch include first diode and
First resonance circuit, the first diode are connect with first tie point and first resonance circuit respectively, and described
One grounded resonator；The second branch include the second diode and the second resonance circuit, second diode respectively with
Second tie point and second resonance circuit connection, second grounded resonator；The third branch includes the
Three diodes and third resonance circuit, the third diode connect with the third tie point and the third resonance circuit respectively
It connects, the third grounded resonator；4th branch includes the 4th diode and the 4th resonance circuit, the four or two pole
Pipe is connect with the 4th tie point and the 4th resonance circuit respectively, the 4th grounded resonator.
3. power amplification circuit according to claim 2, which is characterized in that first resonance circuit includes the first inductance
And first capacitor, one end of first inductance are grounded with one end of the first capacitor, the other end of first inductance
It is connect with the anode of the first diode with the other end of the first capacitor；Second resonance circuit includes the second electricity
Sense and the second capacitor, one end of second inductance and one end of second capacitor be grounded, second inductance it is another
It holds and is connect with the anode of second diode with the other end of second capacitor；The third resonance circuit includes third
Inductance and third capacitor, one end of the third inductance and one end of the third capacitor are grounded, the third inductance it is another
One end is connect with the anode of the third diode with the other end of the third capacitor；4th resonance circuit includes the
Four inductance and the 4th capacitor, one end of the 4th inductance and one end of the 4th capacitor are grounded, the 4th inductance
The other end is connect with the anode of the 4th diode with the other end of the 4th capacitor.
4. power amplification circuit according to claim 2, which is characterized in that the resonance frequency of the first branch and described
The resonance frequency of third branch is identical as the centre frequency of first working frequency range, the resonance frequency of the second branch and
The resonance frequency of 4th branch is identical as the centre frequency of second working frequency range.
5. power amplification circuit according to claim 2, which is characterized in that the power amplifier is to the radiofrequency signal
When amplifying, the first diode, second diode, the third diode and the 4th diode current flow,
So that the bypass circuit open circuit.
6. power amplification circuit according to claim 2, which is characterized in that the power amplifier disconnects the radio frequency letter
When number transmission, the first diode, second diode, the third diode and the 4th diode are disconnected, institute
Bypass circuit short circuit is stated, so that the connecting line transmits the radiofrequency signal.
7. a kind of radio-frequency unit, which is characterized in that the radio-frequency unit includes power amplification described in any one of claims 1-6
Circuit.
8. a kind of power amplification circuit, which is characterized in that the power amplification circuit includes:
Main road circuit, comprising:
Power amplifier, for amplifying to radiofrequency signal, the radiofrequency signal includes at least the first working frequency range；
Bypass circuit, comprising:
Connecting line is connected between the input terminal of the power amplifier and the output end of the power amplifier, the connection
Line includes at least the first tie point；
At least first branch, first tie point are grounded by the first branch；
Wherein, the distance between input terminal of first tie point and the power amplifier is first working frequency range
1/4 wavelength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822101170.5U CN209692736U (en) | 2018-12-14 | 2018-12-14 | A kind of radio-frequency unit and its power amplification circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822101170.5U CN209692736U (en) | 2018-12-14 | 2018-12-14 | A kind of radio-frequency unit and its power amplification circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209692736U true CN209692736U (en) | 2019-11-26 |
Family
ID=68596070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822101170.5U Active CN209692736U (en) | 2018-12-14 | 2018-12-14 | A kind of radio-frequency unit and its power amplification circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209692736U (en) |
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2018
- 2018-12-14 CN CN201822101170.5U patent/CN209692736U/en active Active
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Address after: 233000 building 4, national financial incubation Industrial Park, 17 Yannan Road, high tech Zone, Bengbu City, Anhui Province Patentee after: Dafu Technology (Anhui) Co., Ltd Address before: 518104, Guangdong, Shenzhen province Baoan District manhole street, oyster Road, manhole Industrial Company Third Industrial Zone, A1, A2, A3 101, A4 first, second, third layers Patentee before: SHENZHEN TATFOOK TECHNOLOGY Co.,Ltd. |