Radiation power device for radar transmitter

Abstract

A radiation power device for a radar transmitter comprises a power supply, a pulse generation module, a high-power radiator and an antenna feeder. The output end of the power supply is connected with the input end of the cathode pulse generation module and used for supplying power to the pulse generation module. The pulse generation module is used for generating a high-voltage pulse signal after being electrified, and the output end of the pulse generation module is connected with the input end of the high-power radiator; when a high-voltage pulse signal is applied to the cathode of the high-power radiator, the high-power radiator generates a microwave power signal, the output end of the high-power radiator is connected with the antenna feeder, and the microwave power signal is radiated to the space through the antenna feeder. The radiation power device for the radar transmitter provided by the utility model is simple in structure, light in weight and small in size, and can realize power generation of a high-power radiation source.

Description

Technical Field

[0001] The utility model relates to a radiation power device for a radar transmitter, belonging to the technical field of radar equipment. Background Art

[0002] At present, with the development of military situations in various countries, both shipborne and airborne radars need to conduct reconnaissance and detection against typical targets to verify the performance of their radars. In actual scene applications, target aircraft with flight functions and radiation sources with high-power radiation capabilities can be used to simulate long-range enemy aircraft and airborne radar systems. In addition to meeting the requirements of operating frequency and high peak power, high-power radiation sources are also required to be small in size, light in weight, and have angle preset functions. Summary of the invention

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and propose a radiation power device for a radar transmitter, which can meet the requirements of a high-power radiation source in addition to the operating frequency and high peak power, and has the functions of small size, light weight and angle preset.

[0004] To achieve the above object, the utility model provides a radiation power device for a radar transmitter, comprising: a power supply, a pulse generating module, a high-power radiator and an antenna feed line;

[0005] The output end of the power supply is connected to the input end of the cathode pulse generating module, so as to supply power to the pulse generating module;

[0006] The pulse generating module is used to generate a high-voltage pulse signal after being powered on, and the output end of the pulse generating module is connected to the input end of the high-power radiator;

[0007] When the high-voltage pulse signal is applied to the cathode of the high-power radiator, the high-power radiator generates a microwave power signal, the output end of the high-power radiator is connected to the antenna feed line, and the microwave power signal is radiated into space through the antenna feed line.

[0008] Furthermore, the power supply adopts 18650 ultra-low temperature 24V lithium battery.

[0009] Furthermore, the power supply includes a battery management circuit, and the battery management circuit is used for charging and discharging protection.

[0010] Furthermore, the power supply provides the pulse generating module with a pulse current exceeding 5A, and the time for outputting the pulse current exceeds 1.5 hours.

[0011] Furthermore, the pulse generation module includes a clock generation circuit, a pulse modulation circuit and a high-voltage transformer;

[0012] The clock generating circuit is used to generate a positive voltage narrow pulse signal after power is turned on, and the output end of the clock generating circuit is connected to the input end of the pulse modulation circuit;

[0013] The pulse modulation circuit is used to modulate the positive voltage narrow pulse signal into a positive voltage wide pulse signal, and the output end of the pulse modulation circuit is connected to the input end of the high voltage transformer;

[0014] The high-voltage transformer is used to boost the positive voltage wide pulse signal into a high-voltage pulse signal, and the output end of the high-voltage transformer is connected to the high-power radiator.

[0015] Furthermore, the radiation power of the microwave power signal is greater than 5 kW.

[0016] Furthermore, the antenna feed line includes a feeder for ensuring the propagation of microwave power signals and an antenna for radiating microwave power signals into space, the input end of the feeder is connected to the output end of the high-power radiator, and the output end of the feeder is connected to the antenna.

[0017] Furthermore, the feeder includes an isolator for ensuring unidirectional propagation of the microwave power signal and a transformation connection waveguide for preventing the antenna signal from being transmitted to the high-power radiator. The microwave power signal passes through the isolator and then input into the transformation connection waveguide, and then is output to the antenna through the transformation connection waveguide.

[0018] Furthermore, it also includes a base and a transition disk, the base is fixed on the radiation power device for the radar transmitter, the transition disk is arranged between the base and the antenna, the transition disk is used to swing relative to the base to adjust the pitch angle of the antenna, and the antenna rotates relative to the transition disk to adjust the azimuth angle of the antenna.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] The utility model provides a radiation power device for a radar transmitter, including a power supply, a pulse generating module, a high-power radiator and an antenna feed line; the output end of the power supply is connected to the input end of the cathode pulse generating module, which is used to power the pulse generating module; the pulse generating module is used to generate a high-voltage pulse signal after power is turned on, and the output end of the pulse generating module is connected to the input end of the high-power radiator; when the high-voltage pulse signal is applied to the cathode of the high-power radiator, the high-power radiator generates a microwave power signal, and the output end of the high-power radiator is connected to the antenna feed line, and the microwave power signal is radiated to space through the antenna feed line. The utility model reduces the power output synthesis module, can reduce the volume of the device, and reduce the weight of the device; the device provided by the utility model has a high degree of integration and has the advantages of stability and reliability; the high-power microwave signal generated by the utility model is radiated to space through the antenna feed line unit, and the antenna feed line unit is responsible for adjusting the azimuth and pitch preset angles, so that the device has an angle preset function. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a radiation power device for a radar transmitter provided by an embodiment of the utility model;

[0022] Figure 2 The present invention is a circuit diagram of a pulse generating module of a radiation power device for a radar transmitter provided in an embodiment of the present invention.

[0023] In the figure: 1. Antenna; 2. Transition disk; 3. Base; 4. Power supply; 5. Pulse generating module; 6. High power radiator. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model.

[0025] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present utility model. In addition, the terms "first", "second", "third" and the like are only used for description and distinction, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0026] like Figure 1As shown, the utility model provides a radiation power device for a radar transmitter, including a power supply 4, a pulse generating module 5, a high-power radiator 6 and an antenna feed line. The output end of the power supply 4 is connected to the input end of the cathode pulse generating module 5, and is used to power the pulse generating module 5. The pulse generating module 5 is used to generate a high-voltage pulse signal after being powered on, and the output end of the pulse generating module 5 is connected to the input end of the high-power radiator 6. When the high-voltage pulse signal is applied to the cathode of the high-power radiator 6, the high-power radiator 6 generates a microwave power signal, and the output end of the high-power radiator 6 is connected to the antenna feed line, and the microwave power signal is radiated to space through the antenna feed line.

[0027] The power supply 4 is composed of a lithium battery, which provides power to the pulse generating module 5. The power supply 4 uses a 18650 ultra-low temperature 24V lithium battery, with a standard capacity of 2200mAH, a capacity of 1400mAH at -40 degrees, and a nominal battery voltage of 24V. The power supply 4 includes a standard battery management circuit, which is used for charge and discharge protection and to extend the service life of the power supply 4. The power supply 4 provides a pulse current of more than 5A for the pulse generating module 5, and the output pulse current time exceeds 1.5 hours.

[0028] The pulse generating module 5 includes a clock generating circuit, a pulse modulation circuit and a high voltage transformer. Figure 2 As shown, after the power supply 4 supplies DC power, it provides a DC voltage of about 5V to the clock generation circuit. At the same time, it also generates a 12V control power supply and a 350V main power supply required by the radiation power device of the radar transmitter through a power converter.

[0029] The clock generating circuit is used to generate a positive voltage narrow pulse signal after power is turned on, and the output end of the clock generating circuit is connected to the input end of the pulse modulation circuit. In this embodiment, the positive voltage narrow pulse signal is a 5V signal with a frequency of 600-1000Hz and a pulse width of 0.7μs.

[0030] The pulse modulation circuit is used to modulate the positive voltage narrow pulse signal into a positive voltage wide pulse signal, and the output end of the pulse modulation circuit is connected to the input end of the high-voltage transformer. The positive voltage narrow pulse signal is amplified by the small power MOSFET circuit inside the pulse modulation circuit to drive the high power MOSFET field effect tube. The 350V DC voltage is periodically added to the primary side of the pulse transformer to modulate the positive voltage wide pulse signal. In this embodiment, the positive voltage wide pulse signal is a 24V signal.

[0031] The high-voltage transformer is used to boost the positive voltage wide pulse signal into a high-voltage pulse signal, and the output end of the high-voltage transformer is connected to the high-power radiator 6. After the high-voltage transformer boosts the voltage, a high-voltage pulse signal that meets a certain rising edge is obtained, and the high-voltage pulse signal is added to the cathode of the high-power radiator 6, and the high-power radiator 6 oscillates and outputs high peak power. In this embodiment, the high-voltage pulse signal is a 5kV signal.

[0032] When the high-voltage pulse signal is applied to the cathode of the high-power radiator 6, the high-power radiator 6 generates a microwave power signal. The output end of the high-power radiator 6 is connected to the antenna feed line, which includes a feed line for ensuring the propagation of the microwave power signal and an antenna 1 for radiating the microwave power signal into space.

[0033] Due to the volume and weight restrictions, in this embodiment, the high-power radiator 6 is designed with a small, low-voltage, and high-efficiency electric vacuum device. The magnetron produced by the American E2V company is selected for modification to meet the working frequency and output power requirements. The microwave power signal generated by the high-power radiator 6 is transmitted to the antenna 1 through the feeder and radiated by the antenna 1, thereby meeting the power index requirements.

[0034] In this embodiment, the radiation power of the microwave power signal is greater than 5 kW.

[0035] The antenna feed line includes a feed line for ensuring the propagation of microwave power signals and an antenna 1 for radiating microwave power signals into space. The input end of the feed line is connected to the output end of the high power radiator 6, and the output end of the feed line is connected to the antenna 1.

[0036] The feeder includes an isolator for ensuring unidirectional propagation of microwave power signals and a transformation connection waveguide for preventing the signal of antenna 1 from being transmitted to the high-power radiator 6. The microwave power signal is input into the transformation connection waveguide after passing through the isolator, and is output to the antenna 1 after passing through the transformation connection waveguide. Specifically, the isolator can realize unidirectional propagation of microwave power signals, and can prevent the signal of antenna 1 from being transmitted to the high-power radiator 6, thereby protecting the high-power radiator 6.

[0037] A radiation power device for a radar transmitter also includes a base 3 and a transition disc 2. The base 3 is fixed on the radiation power device for a radar transmitter, and the transition disc 2 is arranged between the base 3 and the antenna 1. The transition disc 2 swings relative to the base 3 to adjust the elevation angle of the antenna 1. The antenna 1 rotates relative to the transition disc 2 to adjust the azimuth angle of the antenna 1.

[0038] The utility model can realize power generation of a high-power radiation source, meet the requirements of high power, light weight and small size, and has a relatively broad application prospect.

[0039] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A radiation power device for a radar transmitter, characterized in that: include: Power supply, pulse generation module, high power radiator and antenna feed line; The output end of the power supply is connected to the input end of the pulse generating module, so as to supply power to the pulse generating module; The pulse generating module is used to generate a high-voltage pulse signal after being powered on, and the output end of the pulse generating module is connected to the input end of the high-power radiator; When the high-voltage pulse signal is applied to the cathode of the high-power radiator, the high-power radiator generates a microwave power signal, the output end of the high-power radiator is connected to the antenna feed line, and the microwave power signal is radiated into space through the antenna feed line.

2. The radiation power device for a radar transmitter according to claim 1, characterized in that: The power supply adopts 18650 ultra-low temperature 24V lithium battery.

3. The radiation power device for a radar transmitter according to claim 2, characterized in that: The power supply includes a battery management circuit, and the battery management circuit is used for charging and discharging protection.

4. The radiation power device for a radar transmitter according to claim 1, characterized in that: The power supply provides the pulse generating module with a pulse current exceeding 5A, and the pulse current is output for more than 1.5 hours.

5. The radiation power device for a radar transmitter according to claim 1, characterized in that: The pulse generation module includes a clock generation circuit, a pulse modulation circuit and a high-voltage transformer; The clock generating circuit is used to generate a positive voltage narrow pulse signal after power is turned on, and the output end of the clock generating circuit is connected to the input end of the pulse modulation circuit; The pulse modulation circuit is used to modulate the positive voltage narrow pulse signal into a positive voltage wide pulse signal, and the output end of the pulse modulation circuit is connected to the input end of the high voltage transformer; The high-voltage transformer is used to boost the positive voltage wide pulse signal into a high-voltage pulse signal, and the output end of the high-voltage transformer is connected to the high-power radiator.

6. The radiation power device for a radar transmitter according to claim 1, characterized in that: The radiation power of the microwave power signal is greater than 5 kW.

7. The radiation power device for a radar transmitter according to claim 1, characterized in that: The antenna feed line includes a feed line for ensuring the propagation of microwave power signals and an antenna for radiating microwave power signals into space, the input end of the feed line is connected to the output end of the high-power radiator, and the output end of the feed line is connected to the antenna.

8. The radiation power device for a radar transmitter according to claim 7, characterized in that: The feeder includes an isolator for ensuring unidirectional propagation of microwave power signals and a transformation connection waveguide for preventing antenna signals from being transmitted to the high-power radiator. The microwave power signal passes through the isolator and is input into the transformation connection waveguide, and is output to the antenna after passing through the transformation connection waveguide.

9. The radiation power device for a radar transmitter according to claim 7, characterized in that: It also includes a base and a transition disk, wherein the base is fixed on the radiation power device for the radar transmitter, and the transition disk is arranged between the base and the antenna. The transition disk is used to swing relative to the base to adjust the pitch angle of the antenna, and the antenna rotates relative to the transition disk to adjust the azimuth angle of the antenna.

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