CN110247636B - Radio frequency power amplifier circuit, output power switch control circuit and control method thereof - Google Patents
Radio frequency power amplifier circuit, output power switch control circuit and control method thereof Download PDFInfo
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- CN110247636B CN110247636B CN201810189615.1A CN201810189615A CN110247636B CN 110247636 B CN110247636 B CN 110247636B CN 201810189615 A CN201810189615 A CN 201810189615A CN 110247636 B CN110247636 B CN 110247636B
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000000630 rising effect Effects 0.000 claims abstract description 35
- 230000009194 climbing Effects 0.000 claims abstract description 7
- 230000003321 amplification Effects 0.000 claims 1
- 238000003199 nucleic acid amplification method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 12
- 239000003990 capacitor Substances 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000004904 shortening Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
- H03F3/19—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/3036—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers
- H03G3/3042—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers in modulators, frequency-changers, transmitters or power amplifiers
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/451—Indexing scheme relating to amplifiers the amplifier being a radio frequency amplifier
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Abstract
The invention discloses a radio frequency power amplifier circuit, an output power switch control circuit and a control method thereof, wherein the output power switch control circuit comprises: the first promotion auxiliary circuit is coupled to the control end of the power tube of the radio frequency power amplifier circuit and is used for providing an auxiliary forward signal in at least the initial stage of the rising edge of the power tube opening signal so as to accelerate climbing in at least the initial stage of the rising edge; and/or a second boost auxiliary circuit coupled to the control end of the power tube of the radio frequency power amplifier circuit, for providing an auxiliary reverse signal during at least an initial stage of the falling edge of the power tube turn-off signal, so as to accelerate the falling during at least the initial stage of the falling edge. The invention can improve the performance of the radio frequency power amplifier circuit and reduce the cost.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a radio frequency power amplifier circuit, an output power switch control circuit and a control method thereof.
Background
Communication devices currently employing DMR (Digital Mobile Radio, digital trunked communication) communication protocols operate with 30ms transmissions and 30ms off transmissions. Among them, ACTP (Adjacent channel transmit Power, instantaneous channel power) is a key indicator of the communication device, affecting the communication quality of the communication device. In order to avoid the loss of transmission data, the power up time and the power down time of the communication device need to be fast, i.e. the power up and power down of the radio frequency power amplifier circuit of the communication device are fast. When the radio frequency power amplifier circuit is turned on or turned off, the lower the ACTP is, the better the ACTP is, namely the lower the power on and power off of the radio frequency power amplifier circuit of the communication device is.
The prior art communication device adjusts the size of the filter capacitor by debugging the filter capacitor on the time sequence pulse signal link, thereby balancing ACTP and the rising time and the falling time of power. But takes a long time to debug, consumes a great deal of manpower, and has low efficiency and high cost.
Disclosure of Invention
In order to solve the problems, the invention provides a radio frequency power amplifier circuit, an output power switch control circuit and a control method thereof, which can improve the efficiency and reduce the cost.
In order to solve the technical problem, the invention also provides an output power switch control circuit of the radio frequency power amplifier circuit, which comprises: the first promotion auxiliary circuit is coupled to the control end of the power tube of the radio frequency power amplifier circuit and is used for providing an auxiliary forward signal in at least an initial stage of a rising edge of the power tube opening signal so as to accelerate climbing in at least the initial stage of the rising edge; and/or a second boost auxiliary circuit, coupled to the control end of the power tube of the radio frequency power amplifier circuit, for providing an auxiliary reverse signal during at least an initial phase of a falling edge of the power tube turn-off signal, so as to accelerate the falling of the falling edge during at least the initial phase.
Wherein the output power switch control circuit includes: a microcontroller comprising a first facilitating signal output and a second facilitating signal output; the first boost signal output is coupled to the first boost assist circuit and provides a first boost signal to control the first boost assist circuit to operate; the second boost signal output is coupled to the second boost assist circuit and provides a second boost signal to control operation of the second boost assist circuit.
The first boost auxiliary circuit comprises a first voltage source and a first switch, wherein the first voltage source is coupled to one end of the first switch, the other end of the first switch is coupled to the control end of the radio frequency power amplifier circuit power tube, and the control end of the first switch is coupled to the first boost signal output end; the second promotion auxiliary circuit comprises a second voltage source and a second switch, wherein the second voltage source is coupled to one end of the second switch, the other end of the second switch is coupled to the control end of the radio frequency power amplifier circuit power tube, and the control end of the second switch is coupled to the second promotion signal output end; the voltage of the first voltage source is higher than that of the second voltage source, the voltage of the first voltage source is higher than that of the rising edge initial stage, and the voltage of the second voltage source is lower than that of the falling edge initial stage.
The first auxiliary promoting circuit comprises a first resistor, and the first resistor is coupled between the first switch and the control end of the radio frequency power amplifier circuit power tube.
One end of the first switch, which is coupled with the control end of the power tube, is grounded through a second resistor.
At least in the initial stage of the rising edge of the power tube opening signal, the output power of the power tube is controlled to climb from zero to P1 by a first slope K1=P1/T1, and then the output power of the power tube is controlled to climb to a target power P2 by a second slope K2= (P2-P1)/(T2-T1) which is slower than the first slope; wherein T1 is the time when the output power of the power tube climbs from zero to P1, T2 is the time when the output power of the power tube climbs from zero to P2, T3 is the time when the output power of the power tube starts to decline, and T4 is the time when the output power of the power tube declines to zero.
And in at least the initial stage of the falling edge of the power tube closing signal, controlling the output power of the power tube to fall to zero according to a third slope K3=P2/(T4-T3).
Wherein the second boost assist circuit is inactive when the first boost assist circuit is active, and the first boost assist circuit is inactive when the second boost assist circuit is active.
In order to solve the technical problem, the invention further provides a radio frequency power amplifier circuit, which comprises: the control circuit controls the first promotion auxiliary circuit and the second promotion auxiliary circuit to work.
In order to solve the technical problem, the invention also provides an output power switch control method of the radio frequency power amplifier circuit, which comprises the following steps: providing an auxiliary forward signal at least at the initial stage of the rising edge of the power tube opening signal of the radio frequency power amplifier circuit, so that climbing is accelerated at least at the initial stage of the rising edge; and/or providing an auxiliary reverse signal at least at an initial stage of a falling edge of the power tube closing signal, so that the falling is accelerated at least at the initial stage of the falling edge.
Compared with the prior art, the output power switch control circuit of the invention comprises: the first promotion auxiliary circuit is coupled to the control end of the power tube of the radio frequency power amplifier circuit and is used for providing an auxiliary forward signal in at least the initial stage of the rising edge of the power tube opening signal so as to accelerate climbing in at least the initial stage of the rising edge; and/or a second promotion auxiliary circuit coupled to the control end of the power tube of the radio frequency power amplifier circuit, for providing an auxiliary reverse signal at least in the initial stage of the falling edge of the power tube closing signal, so that the falling is accelerated at least in the initial stage of the falling edge; the rising time and the falling time of the output power of the power tube are shortened by arranging the first promotion auxiliary circuit and the second promotion auxiliary circuit, so that the performance of the radio frequency power amplifier circuit is improved; in addition, the filter capacitor of the radio frequency power amplifier circuit does not need to be debugged, so that when the radio frequency power amplifier circuit meets ACTP indexes, a great deal of manpower and time are avoided being consumed for debugging, the efficiency is improved, and the cost is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an output power switch control circuit according to a first embodiment of the present invention;
FIG. 2 is a timing diagram of the output power switch control circuit and the power tube of FIG. 1;
FIG. 3 is a circuit diagram of an output power switch control circuit according to a first embodiment of the present invention;
FIG. 4 is a schematic waveform diagram of the output power of the actual detection power tube in FIG. 3;
FIG. 5 is a waveform schematic diagram of the ACTP of the actual sense power tube of FIG. 3;
FIG. 6 is a circuit diagram of an output power switch control circuit according to a third embodiment of the present invention;
FIG. 7 is a circuit diagram of a fourth embodiment output power switch control circuit of the present invention;
fig. 8 is a schematic structural diagram of a radio frequency power amplifier circuit according to a first embodiment of the present invention;
fig. 9 is a flowchart of a method for controlling an output power switch of a radio frequency power amplifier circuit according to a first embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is specifically noted that the following examples are only for illustrating the present invention, but do not limit the scope of the present invention. Likewise, the following examples are only some, but not all, of the examples of the present invention, and all other examples, which a person of ordinary skill in the art would obtain without making any inventive effort, are within the scope of the present invention.
The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented, for example, in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Referring to fig. 1, fig. 1 is a schematic diagram of an output power switch control circuit according to a first embodiment of the invention. The output power switch control circuit 10 is used for a radio frequency power amplifier circuit 20, the output power switch control circuit 10 can comprise a first boost auxiliary circuit 11 and a second boost auxiliary circuit 12, and the radio frequency power amplifier circuit 20 comprises a power tube 21 and a control loop circuit 22. In other embodiments, the output power switch control circuit may include a first boost assist circuit or a second boost assist circuit.
Wherein the first boost assist circuit 11 and the second boost assist circuit 12 are coupled to the control terminal 211 of the power tube 21, and the first boost assist circuit 11 is configured to provide an auxiliary forward signal during at least an initial phase of a rising edge of the power tube 21 on signal, so as to accelerate the rising of the power tube 21 during at least the initial phase of the rising edge. The second boost assist circuit 11 is configured to provide an assist reverse signal during at least a primary phase of a falling edge of the power tube 21 off signal to cause the power tube 21 to accelerate falling during at least the primary phase of the falling edge.
Specifically, the control loop circuit 22 is coupled to the control terminal 211 of the power tube 21, and is used for changing the voltage Vapc of the control terminal 211 of the power tube 21 to adjust the power output by the power tube 21.
The principle of operation of the power switch control circuit 10 is described in connection with the timing diagram of fig. 2.
When the power tube 21 is turned on, the control loop circuit 22 supplies the voltage Vapc to the control terminal 211 of the power tube 21, the power tube 21 operates, and the first auxiliary boost circuit 11 supplies the auxiliary forward signal to the control terminal 211 of the power tube 21. At least the initial phase of the rising edge of the power tube 21 turn-on signal may be the output power of the power tube 21 rising from zero to P2, as shown in fig. 2, i.e., time T0-T2. At T0-T1, the first boost assist circuit 11 and the control loop circuit 22 boost the voltage Vapc of the control terminal 211 to a first preset voltage V1, so that the output power of the power tube 21 climbs from zero to P1. At T1-T2, the first boost assist circuit 11 and the control loop circuit 22 boost the voltage Vapc of the control terminal 211 to a second preset voltage V2 so that the output power of the power tube 21 climbs from P1 to P2. When the output power of the power tube 21 is P2 from T2 to T3, the first auxiliary circuit 11 stops working, and the control loop circuit 22 controls the voltage Vapc of the control terminal 211 to be maintained at the second preset voltage V2. The first boost assist circuit 11 is configured to ramp up the voltage Vapc of the control terminal 211 from zero to the second preset voltage V2 in at least an initial stage (T0-T2) of the rising edge of the open signal, so that the output power of the power tube 21 ramps up from zero to P2 in an accelerated manner, and the time for the output power of the power tube 21 to ramp up from zero to P2 can be shortened.
When the power tube 21 turns off the signal, the voltage Vapc at the control end 211 of the power tube 21 drops from the second preset voltage V2 to 0; the second boost assist circuit 12 provides an assist reverse signal to the control terminal 211 of the power tube 21. At least an initial stage of the falling edge of the power tube 21 off signal may be that the output power of the power tube 21 falls from P2 to zero, as shown in fig. 2, i.e., time T3-T4. At T3-T4, the second boost assist circuit 12 and the control loop circuit 22 drop the voltage Vapc at the control terminal 211 from the second preset voltage V2 to zero, so that the output power of the power tube 21 drops from P2 to zero. When the output power of the power tube 21 is zero, the power tube 21 stops operating. Therefore, the time for the output power of the power tube 21 to drop from P2 to zero can be shortened.
Wherein T1 is the time when the output power of the power tube 21 climbs from zero to P1, T2 is the time when the output power of the power tube 21 climbs from zero to P2, T3 is the time when the output power of the power tube 21 starts to decrease, and T4 is the time when the output power of the power tube 21 decreases to zero.
The first boost auxiliary circuit 11 and the second boost auxiliary circuit 12 are used for shortening the time of at least the initial stage of the rising edge and the time of at least the initial stage of the falling edge, thereby shortening the rising time and the falling time of the output power of the power tube 21 and improving the performance of the radio frequency power amplifier circuit 20. In addition, the filter capacitor of the radio frequency power amplifier circuit 20 does not need to be debugged, so that when the radio frequency power amplifier circuit meets ACTP indexes, a great deal of manpower and time are avoided being consumed for debugging, the efficiency is improved, and the cost is reduced.
The present invention provides an output power switch control circuit of a second embodiment, as shown in fig. 3, the output power switch control circuit 10 further comprising a microcontroller 13, the microcontroller 13 comprising a first boost signal output 131 and a second boost signal output 132. Wherein the first boost signal output 131 is coupled to the first boost assist circuit 11, and the microcontroller 13 is configured to provide a first boost signal to control the first boost assist circuit 11 to operate; the second boost signal output 132 is coupled to the second boost assist circuit 12, and the microcontroller 13 is configured to provide a second boost signal to control the operation of the second boost assist circuit 12.
The first boost auxiliary circuit 11 includes a first voltage source Vs and a first switch K1, the first voltage source Vs is coupled to one end of the first switch K1, the other end of the first switch K1 is coupled to the control end 211 of the power tube 21 of the rf power amplifier circuit 20, and the control end of the first switch K1 is coupled to the first boost signal output end 131. The second boost assist circuit 12 includes a second voltage source Vd and a second switch K2, the second voltage source Vd is coupled to one end of the second switch K2, the other end of the second switch K2 is coupled to the control end 211 of the power tube 21 of the rf power amplifier circuit 20, and the control end of the second switch K2 is coupled to the second boost signal output end 132.
The voltage of the first voltage source Vs is higher than the voltage of the second voltage source Vd, and the voltage of the first voltage source Vs is higher than the voltage of the rising edge in the initial stage, that is, the voltage of the first voltage source Vs is greater than the second preset voltage V2; the voltage of the second voltage source Vs is lower than the voltage of the falling edge initial stage, that is, the voltage of the second voltage source Vd is smaller than the second preset voltage V2. The first voltage source Vs may be a 5V voltage source, and the second voltage source Vd may be a ground voltage.
The first boost assist circuit 11 further includes a first resistor R1 and a second resistor R2, wherein the first resistor R1 is coupled between the first switch K1 and the control end 211 of the power tube 21; one end of the first switch K1 coupled to the control end 211 of the power tube 21 is grounded through the second resistor R2.
At T0-T2, the microcontroller 13 outputs a first boost signal to the control terminal of the first switch K1 through the first boost signal output terminal 131 to control the first switch K1 to be turned on, at this time, the first boost assist circuit 11 provides an assist forward signal to the control terminal 211 of the power tube 21, that is, the first voltage source Vs provides an assist forward signal to the control terminal 211 of the power tube 21, so that the output power of the power tube 21 rises from zero to P2 in an accelerating manner. At this time, the second switch K2 is turned off, that is, when the first auxiliary circuit 11 is operated, the second auxiliary circuit 12 is not operated. When T0-T1, i.e. at least in the initial stage of the rising edge of the power tube 21 turn-on signal, the output power of the power tube 21 is controlled to climb from zero to P1 with a first slope k1=p1/T1; at T1-T2, the output power of the power tube 21 is controlled to climb to the target power P2 at a second slope k2= (P2-P1)/(T2-T1) which is slower than the first slope.
At T2-T3, the microcontroller 13 stops outputting the first boost signal, at which time the first switch K1 and the second switch K2 are opened.
At T3-T4, the microcontroller 13 outputs a second boost signal to the control terminal of the second switch K2 through the second boost signal output terminal 132 to control the second switch K2 to be turned on, at this time, the second boost assist circuit 12 provides an assist reverse signal to the control terminal 211 of the power tube 21, that is, the control terminal 211 of the power tube 21 is grounded, so that the output power of the power tube 21 is accelerated from P2 to zero. At this time, the first switch K1 is turned off, that is, when the second auxiliary circuit 12 is operated, the first auxiliary circuit 11 is not operated. At least in the initial stage of the falling edge of the power tube 21 closing signal, the output power of the power tube 21 is controlled to be reduced to zero by the third slope k3=p2/(T4-T3).
As shown in fig. 4, a waveform diagram of the output power of the actual detection power tube 21 of the present embodiment; the first boost assist circuit 11 is configured to shorten the time of at least the initial stage of the rising edge, and enhance the performance of the rf power amplifier circuit 20. As shown in fig. 5, the waveform diagram of ACTP of the actual detection power tube 21 of the present embodiment; since the filter capacitor of the radio frequency power amplifier circuit 20 does not need to be debugged, when the radio frequency power amplifier circuit meets ACTP indexes, a great deal of manpower and time are avoided being consumed for debugging, the efficiency is improved, and the cost is reduced.
The present invention provides an output power switch control circuit of a third embodiment, as shown in fig. 6, a first boost auxiliary circuit 11 includes a first switch Q1, a first diode D1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, and a first voltage source Vs, a gate of the first switch Q1 is connected to a first boost signal output end 131, a source of the first switch Q1 is grounded, a drain of the first switch Q1 is connected to one end of the third resistor R3 and a cathode of the first diode D1, the other end of the third resistor R3 is connected to a control end 211 of the power tube 21 through the first resistor R1, one end of the second resistor R2 is grounded, the other end of the second resistor R2 is connected between the first resistor R1 and the third resistor R3, and an anode of the first diode D1 is connected to the first voltage source Vs through the fourth resistor R4. The voltage value of the first voltage source Vs may be 9V.
The second boost auxiliary circuit 12 includes a second switching tube Q2 and a fifth resistor R5, where a gate of the second switching tube Q2 is connected to the second boost signal output end 132, a source of the second switching tube Q2 is grounded, and a drain of the second switching tube Q2 is connected to the control end 211 of the power tube 21 through the fifth resistor R5.
The control loop circuit 22 includes a second diode D2 and a sixth resistor R6, where an anode of the second diode D2 is connected to the third output terminal 133 of the microcontroller 13, a cathode of the second diode D2 is connected to the control terminal 211 of the power tube 21, and the sixth resistor R6 is connected in parallel with the second diode D2.
The invention provides an output power switch control circuit of a fourth embodiment, as shown in fig. 7, a first boost auxiliary circuit 11 includes a first switch tube Q1, a second switch tube Q2, a first resistor R1, a second resistor R2 and a first voltage source Vs, a gate of the second switch tube Q2 is connected to a first boost signal output end 131, a source of the second switch tube Q2 is grounded, a drain of the second switch tube Q2 is connected to the gate of the first switch tube Q1 and one end of the first resistor R1, and the other end of the first resistor R1 is connected to one ends of the first voltage source Vs and the second resistor R2; the other end of the second resistor R2 is connected to the source of the first switching tube Q1, and the drain of the first switching tube Q1 is connected to the control end 211 of the power tube 21. The voltage value of the first voltage source Vs may be 7V.
The second boost auxiliary circuit 12 includes a third switch Q3 and a third resistor R3, where a gate of the third switch Q3 is connected to the second boost signal output end 132, a source of the third switch Q3 is grounded, and a drain of the third switch Q3 is connected to the control end 211 of the power tube 21 through the third resistor R3.
The present invention further provides a radio frequency power amplifier circuit, as shown in fig. 8, the radio frequency power amplifier circuit 70 includes a control circuit 71 and the output power switch control circuit 10 described in the above embodiment, and the control circuit 71 is used to control the operations of the first boost assist circuit 11 and the second boost assist circuit 12.
The invention further provides a control method of the output power switch of the radio frequency power amplifier circuit, as shown in fig. 9, the control method comprises the following steps:
s101: providing an auxiliary forward signal at least in the initial stage of the rising edge of the power tube 21 opening signal of the radio frequency power amplifier circuit 20, so that the rising edge at least in the initial stage accelerates climbing;
s102: in at least an initial phase of the falling edge of the power tube 21 shut down signal, an auxiliary reverse signal is provided so that the falling is accelerated in at least the initial phase of the falling edge.
Steps S101 and S102 are applied to the output power switch control circuit 10 of the above embodiment, and are not described herein.
In summary, the output power switch control circuit of the present invention includes: the first promotion auxiliary circuit is coupled to the control end of the power tube of the radio frequency power amplifier circuit and is used for providing an auxiliary forward signal in at least the initial stage of the rising edge of the power tube opening signal so as to accelerate climbing in at least the initial stage of the rising edge; and/or a second promotion auxiliary circuit coupled to the control end of the power tube of the radio frequency power amplifier circuit, for providing an auxiliary reverse signal at least in the initial stage of the falling edge of the power tube closing signal, so that the falling is accelerated at least in the initial stage of the falling edge; the rising time and the falling time of the output power of the power tube are shortened by arranging the first promotion auxiliary circuit and the second promotion auxiliary circuit, so that the performance of the radio frequency power amplifier circuit is improved; in addition, the filter capacitor of the radio frequency power amplifier circuit does not need to be debugged, so that when the radio frequency power amplifier circuit meets ACTP indexes, a great deal of manpower and time are avoided being consumed for debugging, the efficiency is improved, and the cost is reduced.
It should be noted that, the foregoing embodiments all belong to the same inventive concept, and the descriptions of the embodiments have emphasis, and where the descriptions of the individual embodiments are not exhaustive, reference may be made to the descriptions of the other embodiments.
The protection circuit and the control system provided by the embodiment of the invention are described in detail, and specific examples are applied to illustrate the principle and the implementation of the invention, and the description of the above embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.
Claims (8)
1. An output power switch control circuit of a radio frequency power amplifier circuit is characterized by comprising:
the first promotion auxiliary circuit is coupled to the control end of the power tube of the radio frequency power amplifier circuit and is used for providing an auxiliary forward signal in at least the initial stage of the rising edge of the power tube opening signal, so that the output power of the power tube is controlled to climb to P1 from zero by a first slope K1=P1/T1 in at least the initial stage of the rising edge, and then the output power of the power tube is controlled to climb to a target power P2 by a second slope K2= (P2-P1)/(T2-T1) which is slower than the first slope; wherein T1 is the time when the output power of the power tube climbs from zero to P1, and T2 is the time when the output power of the power tube climbs from zero to P2;
the second promotion auxiliary circuit is coupled to the control end of the power tube of the radio frequency power amplifier circuit and is used for providing an auxiliary reverse signal in at least an initial stage of a falling edge of the power tube closing signal so as to accelerate the falling of the falling edge in at least the initial stage;
the first promotion auxiliary circuit comprises a first voltage source and a first switch, wherein the first voltage source is coupled to one end of the first switch, the other end of the first switch is coupled to the control end of the radio frequency power amplifier circuit power tube, and the control end of the first switch is coupled to the first promotion signal output end;
the second promotion auxiliary circuit comprises a second voltage source and a second switch, wherein the second voltage source is coupled to one end of the second switch, the other end of the second switch is coupled to the control end of the radio frequency power amplifier circuit power tube, and the control end of the second switch is coupled to the second promotion signal output end;
the voltage of the first voltage source is higher than that of the second voltage source, the voltage of the first voltage source is higher than that of the rising edge initial stage, and the voltage of the second voltage source is lower than that of the falling edge initial stage.
2. The output power switch control circuit according to claim 1, comprising:
a microcontroller comprising a first facilitating signal output and a second facilitating signal output;
the first boost signal output is coupled to the first boost assist circuit and provides a first boost signal to control the first boost assist circuit to operate;
the second boost signal output is coupled to the second boost assist circuit and provides a second boost signal to control operation of the second boost assist circuit.
3. The output power switch control circuit of claim 1, wherein the first boost assist circuit comprises a first resistor coupled between the first switch and a control terminal of the radio frequency power amplifier circuit power tube.
4. The output power switch control circuit of claim 3, wherein one end of the first switch coupled to the control end of the power tube is further grounded through a second resistor.
5. The output power switch control circuit according to any one of claims 1 to 4, wherein the output power of the power tube is controlled to fall to zero at a third slope k3=p2/(T4-T3), where T3 is a time when the output power of the power tube starts to fall and T4 is a time when the output power of the power tube falls to zero, at least in an initial stage of a falling edge of the power tube off signal.
6. The output power switch control circuit according to any one of claims 1 to 4, wherein the second boost assist circuit is inactive when the first boost assist circuit is active, and wherein the first boost assist circuit is inactive when the second boost assist circuit is active.
7. A radio frequency power amplifier circuit, comprising: a control circuit and an output power switch control circuit according to any one of claims 1 to 4, wherein the control circuit controls operations of the first boost assist circuit, the second boost assist circuit;
the first promotion auxiliary circuit comprises a first voltage source and a first switch, wherein the first voltage source is coupled to one end of the first switch, the other end of the first switch is coupled to the control end of the radio frequency power amplifier circuit power tube, and the control end of the first switch is coupled to the first promotion signal output end;
the second promotion auxiliary circuit comprises a second voltage source and a second switch, wherein the second voltage source is coupled to one end of the second switch, the other end of the second switch is coupled to the control end of the radio frequency power amplifier circuit power tube, and the control end of the second switch is coupled to the second promotion signal output end;
wherein the voltage of the first voltage source is higher than the voltage of the second voltage source, and
the voltage of the first voltage source is higher than that of the initial stage of the rising edge, the second voltage
The voltage of the source is lower than the voltage of the initial stage of the falling edge.
8. An output power switch control method of a radio frequency power amplifier circuit is characterized in that a packet
The method comprises the following steps:
the first promotion auxiliary circuit is used for rising a power tube opening signal of the radio frequency power amplification circuit
Providing an auxiliary forward signal at least for an initial phase of the edge such that at least an initial phase of the rising edge
The output power of the power tube is controlled to climb from zero to P1 by a first slope K1=P1/T1, and then the output power of the power tube is controlled by a second slope K2= (P2-P1)/(T2-T1) which is slower than the first slope
The output power climbs to a target power P2; wherein T1 is the output power of the power tube climbing from zero
Time to P1, T2 is time for the output power of the power tube to climb from zero to P2;
the second boost assist circuit is at least initially stage of the falling edge of the power tube turn-off signal
A section providing an auxiliary reverse signal such that at least an initial phase of the falling edge accelerates down;
the first promotion auxiliary circuit comprises a first voltage source and a first switch, wherein the first voltage source is coupled to one end of the first switch, the other end of the first switch is coupled to the control end of the radio frequency power amplifier circuit power tube, and the control end of the first switch is coupled to the first promotion signal output end;
the second promotion auxiliary circuit comprises a second voltage source and a second switch, wherein the second voltage source is coupled to one end of the second switch, the other end of the second switch is coupled to the control end of the radio frequency power amplifier circuit power tube, and the control end of the second switch is coupled to the second promotion signal output end;
the voltage of the first voltage source is higher than that of the second voltage source, the voltage of the first voltage source is higher than that of the rising edge initial stage, and the voltage of the second voltage source is lower than that of the falling edge initial stage.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101340755A (en) * | 2008-08-12 | 2009-01-07 | 深圳市联德合微电子有限公司 | High-speed driving circuit of LED capable of overshooting prevention |
| CN103731049A (en) * | 2013-12-13 | 2014-04-16 | 上海新进半导体制造有限公司 | Current zero crossing point detection circuit and method, driving circuit and method, and switch power source |
| CN104410258A (en) * | 2014-12-17 | 2015-03-11 | 南京航空航天大学 | Charge pump ripple rejection technology based on multistep discharge of flying capacitor |
| CN204442292U (en) * | 2015-04-01 | 2015-07-01 | 宜确半导体（苏州）有限公司 | The cascade radio-frequency power amplifier that a kind of efficiency improves |
| CN104753471A (en) * | 2013-12-31 | 2015-07-01 | 天工方案公司 | System, circuit and method for dynamic error vector magnitude correction |
| CN104753479A (en) * | 2015-03-09 | 2015-07-01 | 上海海尔集成电路有限公司 | Radio frequency power amplifier circuit and radio frequency transmitter |
| CN105656459A (en) * | 2016-03-28 | 2016-06-08 | 安徽四创电子股份有限公司 | Method and device for improving rising and falling edges of secondary radar pulse signals |
| CN106559041A (en) * | 2016-10-27 | 2017-04-05 | 锐迪科微电子（上海）有限公司 | A kind of bias control circuit and control method of radio-frequency power amplifier |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011142173A (en) * | 2010-01-06 | 2011-07-21 | Sumitomo Electric Ind Ltd | Control circuit and laser diode driving circuit |
-
2018
- 2018-03-08 CN CN201810189615.1A patent/CN110247636B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101340755A (en) * | 2008-08-12 | 2009-01-07 | 深圳市联德合微电子有限公司 | High-speed driving circuit of LED capable of overshooting prevention |
| CN103731049A (en) * | 2013-12-13 | 2014-04-16 | 上海新进半导体制造有限公司 | Current zero crossing point detection circuit and method, driving circuit and method, and switch power source |
| CN104753471A (en) * | 2013-12-31 | 2015-07-01 | 天工方案公司 | System, circuit and method for dynamic error vector magnitude correction |
| CN104410258A (en) * | 2014-12-17 | 2015-03-11 | 南京航空航天大学 | Charge pump ripple rejection technology based on multistep discharge of flying capacitor |
| CN104753479A (en) * | 2015-03-09 | 2015-07-01 | 上海海尔集成电路有限公司 | Radio frequency power amplifier circuit and radio frequency transmitter |
| CN204442292U (en) * | 2015-04-01 | 2015-07-01 | 宜确半导体（苏州）有限公司 | The cascade radio-frequency power amplifier that a kind of efficiency improves |
| CN105656459A (en) * | 2016-03-28 | 2016-06-08 | 安徽四创电子股份有限公司 | Method and device for improving rising and falling edges of secondary radar pulse signals |
| CN106559041A (en) * | 2016-10-27 | 2017-04-05 | 锐迪科微电子（上海）有限公司 | A kind of bias control circuit and control method of radio-frequency power amplifier |
Non-Patent Citations (1)
| Title |
|---|
| μm脉冲电源及其在Z-pinch诊断中的应用;郭明安等;《强激光与粒子束》;20040731;第16卷(第7期);第947-948页 * |
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| CN110247636A (en) | 2019-09-17 |
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