High-power high-duty-ratio pulse power amplification equipment

Abstract

The utility model discloses high-power high-duty-ratio pulse power amplification equipment, which relates to the technical field of radio frequency communication and comprises a radio frequency driving amplification module, a final-stage amplification module, a synthesis filtering coupling module, a control and driving module and a power supply module. The radio frequency driving amplification module is electrically connected with the final-stage amplification module and the control and driving module respectively; the synthesis filtering coupling module is electrically connected with the final-stage amplification module and the control and drive module. The solid-state pulse power amplifier is convenient to design, simple in circuit, low in cost, high in reliability, wide in application range, high in practicability and capable of being widely applied to design and equipment of various solid-state pulse power amplifiers.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of radio frequency circuits, in particular to a 5KW high-power high-duty-cycle pulse power amplifier device. BACKGROUND

[0002] The solid-state pulse amplifier is the most basic and widely used microwave circuit functional unit in radio frequency and microwave systems. The current solid-state pulse amplifier tends to switch from single pulse to repeated high frequency, from low power to high power, and from low duty cycle to high duty cycle of the output pulse signal. It is a research topic that is paid great attention to at home and abroad to safely, effectively and controllably output power of the solid-state pulse amplifier, and to have large output power and high duty cycle.

[0003] In the instrument equipment, the power output size of the product and the reliability of the product are important indexes of the solid-state pulse amplifier. In the prior art, there is still a lack of a solid-state pulse power amplifier device which is simple in circuit, low in cost and simple in design. CONTENT OF THE INVENTION

[0004] In view of the above problems in the prior art, the application provides a high-power high-duty-cycle pulse power amplifier device, which solves the problems of small output power and low duty cycle of the existing pulse power amplifier device.

[0005] In order to achieve the above-mentioned application purposes, the application adopts the technical scheme of a high-power high-duty-cycle pulse power amplifier device, which comprises a radio frequency drive amplification module, a final stage amplification module, a synthesis filter coupling module, a control and drive module and a power supply module.

[0006] The radio frequency drive amplification module is electrically connected with the final stage amplification module and the control and drive module respectively; the synthesis filter coupling module is electrically connected with the final stage amplification module and the control and drive module respectively; and the power supply module is electrically connected with the control and drive module.

[0007] As a preferred technical scheme, the radio frequency drive amplification module comprises an external signal source, a first filter attenuation unit, a first-stage amplifier, a second filter attenuation unit, a second-stage amplifier, a first temperature compensation attenuator, a first radio frequency switch, a first digital control attenuator, a coupling filter, a third-stage amplifier, a second temperature compensation attenuator, a second digital control attenuator, a second radio frequency switch, a fourth-stage amplifier, a first fixed attenuator and a four-way power divider which are connected in sequence.

[0008] The four-way signal output in parallel by the four-way power divider is used as the output signal of the radio frequency drive amplification module.

[0009] As a preferred technical scheme, the control and drive module comprises a control and drive power amplifier unit and a detection circuit which are electrically connected.

[0010] The control and drive power amplifier unit is also electrically connected with the first radio frequency switch, the first digital control attenuator, the coupling filter, the second digital control attenuator and the second radio frequency switch respectively.

[0011] As a preferred technical solution, the power supply module comprises a power supply unit, an external 220V power supply unit, a fan power supply and a fan.

[0012] The external 220V power supply unit is electrically connected with the power supply unit and the fan power supply respectively; and the fan power supply is also electrically connected with the fan.

[0013] As a preferred technical solution, the power supply unit and the fan power supply are also electrically connected with the control and drive power amplifier unit.

[0014] As a preferred technical solution, the final stage amplification module comprises four identical final stage power amplifier units.

[0015] The final stage power amplifier unit comprises a second fixed attenuator, a seventh stage amplifier, a third fixed attenuator, an eighth stage amplifier and a first bridge connected in sequence.

[0016] The input end of the second fixed attenuator serves as the input end of the final stage power amplifier unit; the first output end of the first bridge is connected with the input end of the seventh stage amplifier; the second output end of the first bridge is connected with the input end of the eighth stage amplifier; the output end of the seventh stage amplifier is connected with the input end of the first circulator; the output end of the eighth stage amplifier is connected with the input end of the second circulator; the output end of the first circulator and the output end of the second circulator are both connected with the input end of the second bridge; and the output end of the second bridge serves as the output end of the final stage power amplifier unit.

[0017] The input signal of the final stage power amplifier unit is a signal output by the four-way power divider; and the output signal of the final stage power amplifier unit is a final stage signal.

[0018] As a preferred technical solution, the input signal of the synthesis filter coupling module is four final stage signals; and the output signal comprises a power signal, a reverse coupling signal and a forward coupling signal.

[0019] The power signal serves as the output signal of a high-power high-duty-cycle pulse power amplification device.

[0020] As a preferred technical solution, the reverse coupling signal and the forward coupling signal serve as the input signals of a detection circuit.

[0021] As a preferred technical solution, the first filter attenuator unit and the second filter attenuator unit have the same structure and both comprise a filter and a fixed attenuator connected in sequence.

[0022] As a preferred technical solution, the input signal of the external signal source is a pulse signal or a continuous wave signal.

[0023] The utility model discloses the beneficial effects are:

[0024] 1. Through radio frequency drive amplification module, the power and duty cycle of equipment are promoted, and through the coupling input of control and drive module receiving radio frequency drive amplification module, over pulse width and over duty cycle protection are carried out for equipment;

[0025] 2. Through the radio frequency switch device of control and drive module to radio frequency drive amplification module control, realize the opening and shutdown of signal output;

[0026] 3. Through the digital control attenuating device of control and drive module to radio frequency drive amplification module control, realize the regulation and control of signal output signal size;

[0027] 4. Through the output voltage of control and drive module receiving detection circuit, realize the monitoring of signal, when the exception occurs, the power protection of equipment is carried out. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is high power high duty cycle pulse power amplification equipment theoretical framework diagram;

[0029] Figure 2 It is radio frequency drive amplification module, control and drive module and power supply module principle diagram;

[0030] Figure 3 It is final stage power amplifier unit principle diagram;

[0031] Figure 4 It is the working principle diagram of synthetic filter coupling module. DETAILED DESCRIPTION

[0032] The specific embodiment of the utility model is described below, so that the person skilled in the art can understand the utility model, but it should be clear that the utility model is not limited to the scope of the specific embodiment, for the person skilled in the ordinary skill in the art, as long as various changes are within the spirit and scope of the utility model defined and determined by the appended claims, these changes are obvious, all the invention and creation using the concept of the utility model are within the scope of protection.

[0033] As Figure 1 Indicated, in an embodiment of the utility model, provide a kind of high power high duty cycle pulse power amplification equipment, including: radio frequency drive amplification module, final stage amplification module, synthetic filter coupling module, control and drive module and power supply module;

[0034] The radio frequency driving amplification module is electrically connected with the final stage amplification module and the control and driving module respectively; the synthesis filter coupling module is electrically connected with the final stage amplification module and the control and driving module respectively; and the power supply module is electrically connected with the control and driving module.

[0035] The radio frequency driving amplification module is used for radio frequency amplification of an externally input signal source; the final stage amplification module is used for amplification of the output signal of the radio frequency driving amplification module; and the synthesis filter coupling module is used for power synthesis of the four-way signal output by the final stage amplification module, filtering of harmonic power and coupling of signals.

[0036] The functions of the control and driving module include:

[0037] 1. Control of the radio frequency switch device of the radio frequency driving amplification module to realize opening and closing of the signal output;

[0038] 2. Control of the digital control attenuator device of the radio frequency driving amplification module to realize regulation of the signal output signal size;

[0039] 3. Processing of the protection signal output by the radio frequency driving amplification module to shut down the equipment;

[0040] 4. Receiving of the voltage output by the detection circuit to realize monitoring of the signal and to shut down the equipment for protection when an abnormality occurs;

[0041] 5. Continuous wave and pulse mode switching processing.

[0042] As shown in Figure 2 The radio frequency driving amplification module includes, in sequence, an external signal source, a first filter attenuation unit, a first stage amplifier, a second filter attenuation unit, a second stage amplifier, a first temperature compensation attenuator, a first radio frequency switch, a first digital control attenuator, a coupling filter, a third stage amplifier, a second temperature compensation attenuator, a second digital control attenuator, a second radio frequency switch, a fourth stage amplifier, a first fixed attenuator and a four-way power divider.

[0043] The four-way signal output in parallel by the four-way power divider is the output signal of the radio frequency driving amplification module.

[0044] The control and driving module includes a control and driving power amplifier unit and a detection circuit electrically connected; the detection circuit receives the forward coupling signal and the reverse coupling signal coupled and output by the synthesis filter coupling module and generates a direct current voltage to be provided to the control and driving power amplifier unit, and the control and driving power amplifier unit judges the power amplifier state through the direct current voltage provided by the detection circuit.

[0045] The control and driving power amplifier unit is also electrically connected with the first radio frequency switch, the first digital control attenuator, the coupling filter, the second digital control attenuator and the second radio frequency switch respectively.

[0046] The power supply module comprises a power supply unit, an external 220V power supply unit, a fan power supply and a fan;

[0047] The power supply unit is configured to supply power to the entire device, the fan power supply is configured to supply power to the fan, the external 220V power supply unit is configured to provide external power for the power supply unit and the fan power supply, and the fan is configured to dissipate heat of the entire device to prevent the device from being damaged due to overheating. In particular, the speed of the fan can be controlled by the radio frequency drive amplification module.

[0048] The external 220V power supply unit is electrically connected to the power supply unit and the fan power supply, respectively. The fan power supply is also electrically connected to the fan.

[0049] The power supply unit and the fan power supply are also electrically connected to the control and drive power amplifier unit.

[0050] The final stage amplification module comprises four identical final stage power amplifier units. As shown in Figure 3 The final stage power amplifier unit comprises a second fixed attenuator, a fifth stage amplifier, a third fixed attenuator, a sixth stage amplifier and a first bridge connected in sequence.

[0051] The input end of the second fixed attenuator serves as the input end of the final stage power amplifier unit. The first output end of the first bridge is connected to the input end of the seventh stage amplifier, and the second output end of the first bridge is connected to the input end of the eighth stage amplifier. The output end of the seventh stage amplifier is connected to the input end of the first circulator, and the output end of the eighth stage amplifier is connected to the input end of the second circulator. The output end of the first circulator and the output end of the second circulator are both connected to the input end of the second bridge. The output end of the second bridge serves as the output end of the final stage power amplifier unit.

[0052] The input signal of the final stage power amplifier unit is a signal output by the four-way power divider, and the output signal of the final stage power amplifier unit is a final stage signal.

[0053] As shown in Figure 4 The input signal of the synthesis filter coupling module is four final stage signals, and the output signal comprises a power signal, a reverse coupling signal and a forward coupling signal.

[0054] The power signal serves as the output signal of the high-power high-duty-cycle pulse power amplification device.

[0055] Specifically, the reverse coupling signal and the forward coupling signal serve as the input signals of the detection circuit.

[0056] Specifically, the first filter attenuator unit and the second filter attenuator unit have the same structure and both comprise a filter and a fixed attenuator connected in sequence.

[0057] In particular, the input signal of the external signal source is a pulse signal or a continuous wave signal, and the working mode of the external signal source can be switched by the control and drive power amplifier unit.

[0058] In one application of the utility model, an ARM chip is used as the control and drive power amplifier unit, and 5kW is used as the power output:

[0059] When the working mode of the external signal source is pulse mode: the pulse signal first passes through the first filter attenuation unit and the first-stage amplifier, with a power of 10dBm, then passes through the second filter attenuation unit and the second-stage amplifier, with a power of 20dBm, then passes through the first temperature compensation attenuator, to ensure that the gain of the radio frequency drive amplifier module changes with temperature in high and low temperature states, then passes through the first radio frequency switch, for modulating the signal, then passes through the first digital control attenuator, for controlling the attenuation, with a power output of 12.5dBm, at this time, the signal enters the coupling filter for input coupling, to output the coupled input signal to the control and drive module, for detecting the pulse width and duty cycle of the input signal, then passes through the third-stage amplifier, with a power output of 29dBm, then passes through the second temperature compensation attenuator, the second digital control attenuator and the second radio frequency switch, to enter the fourth-stage amplifier, with a power output of 36dBm, then passes through the first fixed attenuator, and the signal then passes through the four-way power divider, to drive the final output signal to be output from the four-way power divider output end;

[0060] After output by the four-way power divider, the signal enters one of the final-stage power amplifier units of the final-stage amplifier module, sequentially passes through the second fixed attenuator and the fifth-stage amplifier, with an output power of 36dBm, then passes through the third fixed attenuator to improve the standing wave, after the sixth-stage amplifier, with an output power of 48dBm, then passes through the first bridge 1:2, the upper path passes through the seventh-stage amplifier, with an output gain of 58.7dBm, then passes through the first circulator, the lower path passes through the eighth-stage amplifier, with an output gain of 58.7dBm, then passes through the second circulator, and the first circulator and the first circulator are combined by the second bridge to output 2:1, with an output power of 61.2dBm;

[0061] The four-way output signals of the final-stage amplifier module are combined by the synthesis filter coupling module, to output the filtered power signal, and to output the forward and reverse signals to the detection circuit.

[0062] In particular, the forward coupling signal can be connected to a power divider to divide the forward coupling signal 1:2, one of which is output to the detection circuit, and the other of which is output to the outside.

[0063] When the working mode of the external signal source is continuous wave mode: the continuous wave signal first passes through the first filter attenuation unit and the first stage amplifier, with a power of 10 dBm, then passes through the second filter attenuation unit and the second stage amplifier, with a power of 20 dBm, then passes through the first temperature compensation attenuator, to ensure that the gain of the radio frequency driving amplification module changes with temperature in high and low temperature states, then passes through the first radio frequency switch, for modulating signal, then passes through the first digital control attenuator, for controlling the attenuation amount, with a power output of 12.5 dBm, at this time, the signal enters the coupling filter for input coupling, to output the coupling input signal to the control and driving module, for detecting the pulse width and duty cycle of the input signal, then passes through the third stage amplifier, with a power output of 29 dBm, then passes through the second temperature compensation attenuator, the second digital control attenuator (pre-attenuation 15 dBM) and the second radio frequency switch, to enter the fourth stage amplifier, with a power output of 23 dBm, then passes through the first fixed attenuator, and the signal then passes through the following four-way power divider, to drive the final output signal to be output from the output end of the four-way power divider;

[0064] After output through the four-way power divider, the signal enters one of the final stage power amplifier units of the final stage amplification module, sequentially passes through the second fixed attenuator and the fifth stage amplifier for amplification, with an output power of 23 dBm, then passes through the third fixed attenuator to improve the standing wave, after the sixth stage amplifier, the output power is 33 dBm, then passes through the first bridge 1:2, the upper path passes through the seventh stage amplifier, with an output gain of 42.7 dBm, then passes through the first circulator, the lower path passes through the eighth stage amplifier, with an output gain of 42.7 dBm, then passes through the second circulator, and the outputs of the first circulator and the first circulator are combined through the second bridge, with an output power of 45.2 dBm;

[0065] The four-way output signals of the final stage amplification module are combined through the synthesis filter coupling module, to output the power signal after filtering, and to output the forward and reverse signals to the detection circuit.

[0066] In particular, the forward coupling signal can be connected with a power divider to divide the forward coupling signal 1 into two, one of which is output to the detection circuit, and the other is output to the outside.

[0067] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A high power, high duty cycle, pulsed power amplification device, characterized by, The application relates to a radio frequency drive amplification module, a final stage amplification module, a synthesis filter coupling module, a control and drive module and a power supply module. The radio frequency drive amplification module is electrically connected with the final stage amplification module and the control and drive module; the synthesis filter coupling module is electrically connected with the final stage amplification module and the control and drive module; and the power supply module is electrically connected with the control and drive module. The output signal of the radio frequency drive amplification module is a radio frequency amplification signal; the input signal of the final stage amplification module is a radio frequency amplification signal, and the output signal is a final stage signal; the input signal of the synthesis filter coupling module is a final stage signal, and the output signal is a forward coupling signal and a reverse coupling signal; the input signal of the radio frequency drive amplification module further comprises a control signal from the control and drive module; the input signal of the power supply module is a control signal from the control and drive module; and the input signal of the control and drive module comprises a forward coupling signal and a reverse coupling signal and a coupling input signal from the radio frequency drive amplification module. The radio frequency drive amplification module comprises an external signal source, a first filter attenuation unit, a first-stage amplifier, a second filter attenuation unit, a second-stage amplifier, a first temperature compensation attenuator, a first radio frequency switch, a first digital control attenuator, a coupling filter, a third-stage amplifier, a second temperature compensation attenuator, a second digital control attenuator, a second radio frequency switch, a fourth-stage amplifier, a first fixed attenuator and a four-way power divider which are connected in sequence.

2. The high-power, high-duty-cycle, pulsed power amplification device of claim 1, wherein, The four-way power divider outputs four-way signals as the output signals of the radio frequency drive amplification module. The control and drive module comprises a control and drive power amplifier unit and a detection circuit which are electrically connected.

3. The high-power, high-duty-cycle, pulsed power amplification device of claim 2, wherein, The control and drive power amplifier unit is further electrically connected with the first radio frequency switch, the first digital control attenuator, the coupling filter, the second digital control attenuator and the second radio frequency switch. The power supply module comprises a power supply unit, an external 220V power supply unit, a fan power supply and a fan.

4. The high-power, high-duty-cycle, pulsed power amplification device of claim 3, wherein, The external 220V power supply unit is electrically connected with the power supply unit and the fan power supply; and the fan power supply is further electrically connected with the fan. The power supply unit and the fan power supply are further electrically connected with the control and drive power amplifier unit.

5. The high-power, high-duty-cycle, pulsed power amplification device of claim 4, wherein, The final stage amplification module comprises four-way identical final stage power amplifier units.

6. The high-power, high-duty-cycle, pulsed power amplification device of claim 3, wherein, The final stage power amplifier unit comprises a second fixed attenuator, a fifth-stage amplifier, a third fixed attenuator, a sixth-stage amplifier and a first electric bridge which are connected in sequence. The input end of the second fixed attenuator is the input end of the final stage power amplifier unit; the first output end of the first electric bridge is connected with the input end of a seventh-stage amplifier; the second output end of the first electric bridge is connected with the input end of an eighth-stage amplifier; the output end of the seventh-stage amplifier is connected with the input end of a first circulator; the output end of the eighth-stage amplifier is connected with the input end of a second circulator; the output end of the first circulator and the output end of the second circulator are both connected with the input end of a second electric bridge; and the output end of the second electric bridge is the output end of the final stage power amplifier unit. The input signal of the final stage power amplifier unit is one-way signal output by the four-way power divider, and the output signal of the final stage power amplifier unit is a final stage signal. The input signal of the synthesis filter coupling module is four-way final stage signals, and the output signal comprises a power signal, a reverse coupling signal and a forward coupling signal.

7. The high-power, high-duty-cycle, pulsed power amplification device of claim 6, wherein, ​ The power signal is output signal of high-power high-duty cycle pulse power amplification equipment.

8. The high-power, high-duty-cycle, pulsed power amplification device of claim 7, wherein, The reverse coupling signal and the forward coupling signal are input signals of a detection circuit.

9. The high-power, high-duty-cycle, pulsed power amplification device of claim 2, wherein, The first filter attenuation unit and the second filter attenuation unit are identical in structure and each comprises a filter and a fixed attenuator connected in sequence.

10. The high-power, high-duty-cycle, pulsed power amplification device of claim 2, wherein, The input signal of the external signal source is a pulse signal or a continuous wave signal.

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