CN106100651B - A kind of very low frequency Liquid-cooled Solid-state Transmitter - Google Patents
A kind of very low frequency Liquid-cooled Solid-state Transmitter Download PDFInfo
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- CN106100651B CN106100651B CN201610680334.7A CN201610680334A CN106100651B CN 106100651 B CN106100651 B CN 106100651B CN 201610680334 A CN201610680334 A CN 201610680334A CN 106100651 B CN106100651 B CN 106100651B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/03—Constructional details, e.g. casings, housings
- H04B1/036—Cooling arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0458—Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B2001/0408—Circuits with power amplifiers
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transmitters (AREA)
- Amplifiers (AREA)
Abstract
The invention discloses a kind of very low frequency Liquid-cooled Solid-state Transmitters, including signal processing system, signal processing system output end is serially connected with power amplifying system, power amplifying system is connected with matched filtering system, matched filtering system connects tuning system, tuning system is used for the tuning process of signal, and signal is delivered to external emission antenna；Matched filtering system is connected with the fictitious load for debugging, detecting；The transmitter further includes power-supply system, cooling system, monitoring management system.Device for power switching of the present invention can reduce loss, power combing transformer can enhance the moment impacts ability such as complete machine anti lightning, short circuit, overload using ultracrystallite, power combing mode harmonic component is small, it is small to filter circuit pressure, complete machine harmonic wave index≤60dB, transmitter power amplifier, high voltage power supply cooling use liquid cooling mode, total noise of centrifuge to reduce, equipment dependability is improved, is prolonged the service life.
Description
Technical field
The present invention relates to a kind of transmitter more particularly to a kind of very low frequency Liquid-cooled Solid-state Transmitters.
Background technology
Transmitter is the core equipment that very low frequency transmits, and the quality of performance directly determines the communication of entire communication system
Ability.Four epoch of VLF emission machine development experience at present：
The first generation is spark transmitter；
The second generation is the inferior exchange transmitter of sub- Lishan Mountain moral；
The third generation is high power valve transmitter；
Forth generation is all solid-state transmitter.
First and second generation transmitter is the equipment before World War II, has not been used now.
The advantages of third generation vacuum tube transmitter, is that single-machine capacity is big, the disadvantage is that it is inefficient, generally in the high-power station
Generally use.In recent years, vacuum tube transmitter technology is also updating, first, vacuum electronic Manifold technology is quickly grown, make cathode and
Even grid loss consumption reduces；Second is that the improvement of transmitter circuitry form, complete machine effect is improved using D classes, E class high efficiency switching amplifiers
Rate.This makes vacuum tube transmitter still have very strong vitality, and will obtain the development of bigger.
Forth generation all solid-state transmitter is that efficiency is highest in all types transmitter, represents the development side of WeiLai Technology
To advantage is as follows：
1. the standby class time is short：All solid state VLF emission machine does not have filament, is not required to preheat, can plug and play, be particularly suitable for
Wartime requirement.
2. efficient：The switching amplifier of all solid state VLF emission machine is that efficiency is highest in all amplifiers, can be pressed
Expense contracting operation and safeguarded.
3. easy to operate：The power amplifier of all solid state VLF emission machine is broadband amplification, is not required to tune.Complete machine is adjustable
Element is also fewer than other types of transmitter.
4. construction standard, seriation, the property tieed up are strong：The circuit of uniformity module, structure are easy to standardize, alternative to make
With.
5. reliability：When power amplifier module in part breaks down in transmitter, complete machine cpable of lowering power works on.The machine longevity
Life length, theoretically the service life is unlimited for semiconductor devices, actually more much longer than vacuum device.
So each big country of the world is hardy developing all solid state VLF emission machine.
Existing very low frequency solid state transmitter technology also has following insufficient：
1. it is bipolarity hard switching control mode, work(that power amplifier, which uses D classes " H " bridge circuit, gate drive signal,
Rate switching device bears big current stress and voltage stress in switching moments, and it is larger to turn on and off process loss, high frequency
When it is especially pronounced.Device for power switching uses MOSFET or IGBT, and MOSFET on state resistances are larger, and on-state loss is larger, IGBT
There are tail currents, and frequency characteristic is poor, and switching loss is big.Existing efficiency power amplifier >=92%.
2. power output transformer magnetic core using Meng ferrite, although the material high-frequency loss is relatively low, because its saturation
Magnetic induction value (Bs) is relatively low, the volume and weight of magnet ring can be made bigger under the conditions of high-power, yield rate is low.In addition, ferrite
Curie temperature it is relatively low, thermal stability is poor.
3. power combing mode is to export several power amplifiers to carry out same-phase amplitude superposition, output wave after synthesis
Shape is square wave, and harmonic component is big, big to filter circuit pressure, complete machine harmonic wave index≤- 45dB.
4. the cooling of transmitter power amplifier, high voltage power supply uses forced air cooling mode, noise big.
5. high voltage power supply is to concentrate pressure regulator rectification form, this kind of power supply is simply ripe, but less efficient, and volume is big, control
System is inconvenient, and load and line regulation are poor, and voltage adjustment time is long, results in complete machine inactivity to export once breaking down,
Reliability is low.
6. transmitter tuning manner be manually, electrically, it is three kinds preset, be unable to automatic decision and real-time tracking load condition and become
Change, it need to be by manually being judged, being adjusted.
Invention content
The purpose of the present invention solves prior art problem, provides a kind of very low frequency Liquid-cooled Solid-state Transmitter.
For achieving the above object, the technical scheme is that：A kind of very low frequency Liquid-cooled Solid-state Transmitter, including with
In receive information data and by information data modulate generate analog radio frequency pumping signal signal processing system, signal processing system
Output end is serially connected with power amplifying system, and power amplifying system is connected with for the output signal progress to power amplifying system
The matched filtering system match, filtered, matched filtering system connect tuning system, and tuning system is used for the tuning process of signal, and
Signal is delivered to external emission antenna；The matched filtering system is connected with the fictitious load for debugging, detecting；
The transmitter further includes power-supply system, and power-supply system is high-voltage DC power supply, respectively with the signal processing system,
Power amplifying system, matched filtering system, tuning system connection, for providing electric energy；
Including cooling system, cooling system uses Two-way Cycle mode, for power-supply system, the cooling drop of power amplifying system
Temperature, including a cooling circuit, secondary cooling circulation loop, cooling circuit, a secondary cooling are recycled back to
Road simultaneously flows through the heat exchanger for transmitting heat, and a cooling circuit flows through power-supply system and power amplification system
System carries out cooling operations, and heat is transferred to secondary cooling cycle by the high-temperature water in a cooling circuit by heat exchanger
Water at low temperature in circuit, secondary cooling circulation loop flow through at least 1 cooler and cool down；
Including monitoring management system, monitoring management system is used for the control and protection to transmitter, is carried out to state real-time
Sampling, by showing that equipment is shown；
The power amplifying system includes digital staircase wave producer, and digital staircase wave producer, which encourages analog radio frequency, to be believed
It number is converted to the switching signal arranged by certain sequential, digital staircase generator output end is equipped at least one digital distributor,
Digital distributor is connected separately with several power amplifiers, and power amplifier is connected separately with power combing transformer, power
Synthesis transformer secondary output is mutually in series, and connects and used with the matched filtering system, the magnetic core of the power combing transformer
Superfine crystal material；
The matched filtering system includes match circuit, and match circuit input terminal is connected with the power amplifying system,
It is connected with filter circuit with circuit output end, filter circuit output end is equipped with single-pole double-throw switch (SPDT), one branch of single-pole double-throw switch (SPDT)
Tuning system is connected, another branch connects fictitious load；
The tuning system includes the intermediate tank circuit, and intermediate tank circuit input terminal is connect with the matched filtering system, medial launder
Road output end is connected with antenna coupling unit, and antenna coupling unit is connected with antenna tuning pavilion.
As an improvement of the present invention, the power amplifier uses class-D amplifier, circuit mode to use phase-shifting full-bridge
Control, including four power switch tubes, when every power switch tube difference, are switched on or off, and it is controlled to be switched on or off the time.
Another as the present invention improves, and multiple water cooling lists are equipped in a cooling circuit of the cooling system
Member, water cooling unit are arranged in the power-supply system and the power amplifying system.
Further, the power-supply system includes at least one switchgear, the high voltage power supply outside the connection of switchgear input terminal,
Switchgear output end is connected with power transformer, and power transformer is connected at least one high frequency switch power, the height of at least one
Frequency Switching Power Supply constitute integrated drive generator, integrated drive generator be equipped with electrical power control cabinet, high frequency switch power respectively with the signal processing
System, power amplifying system, matched filtering system, tuning system connection, provide electric energy.
The beneficial effects of the invention are as follows：
1. power amplifier uses D classes " H " bridge circuit, gate drive signal to be controlled using phase-shifting full-bridge, power is made to open
It closes pipe to switch close to no-voltage, zero stream, reduces loss and peak voltage, electric current that power switch tube is born.Power switch
More preferably, driving power smaller, device for power switching can reduce 70% loss, novel work(for device, on state resistance and switching characteristic
Rate amplifier efficiency >=97%；
2. power combing transformer can enhance the moment impacts ability such as complete machine anti lightning, short circuit, overload using ultracrystallite.
3. power combing mode harmonic component is small, small to filter circuit pressure, complete machine harmonic wave index≤- 60dB.
4. the cooling of transmitter power amplifier, high voltage power supply uses liquid cooling mode, total noise of centrifuge is reduced into 10dB, while liquid
It is cold to ensure that solid-state devices die temperature is 20 DEG C low compared with forced air cooling, and temperature fluctuation range is small, stablizes relatively, so as to carry
High equipment dependability extends solid-state devices service life.
Description of the drawings
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is power amplifying system structural schematic diagram of the present invention；
Fig. 3 is schematic diagram of cooling system structure of the present invention；
Fig. 4 is power system structure schematic diagram of the present invention；
Table 1 is ultracrystallite and manganese-zinc ferrite parameter comparison.
Specific implementation mode
Below in conjunction with attached drawing, technical scheme in the embodiment of the invention is clearly and completely described.
As shown in Figure 1, a kind of very low frequency Liquid-cooled Solid-state Transmitter, including it is used to receive information data and by information data tune
System generates the signal processing system 1 of analog radio frequency pumping signal, and 1 output end of signal processing system is serially connected with power amplifying system 2,
Power amplifying system 2 is connected with the matched filtering system 3 for being matched, being filtered for the output signal to power amplifying system 2,
Matched filtering system 3 connects tuning system 4, and tuning system 4 is used for the tuning process of signal, and signal is delivered to external emission
Antenna (not shown)；The matched filtering system 3 is connected with the fictitious load 5 for debugging, detecting；
The transmitter further includes power-supply system 6, and power-supply system 6 is high-voltage DC power supply, respectively with the signal processing system
System 1, power amplifying system 2, matched filtering system 3, tuning system 4 connect, for providing electric energy；
Transmitter further includes cooling system 7, as shown in Fig. 2, cooling system 7 uses Two-way Cycle mode, is used for power-supply system
6, power amplifying system 2 cools, including a cooling circuit 701, secondary cooling circulation loop 702, and described one
Secondary cooling circuit 701, secondary cooling circulation loop 702 simultaneously flow through the heat exchanger 704 for transmitting heat, and described one
Secondary cooling circuit 704 flows through power-supply system 6 and power amplifying system 2 carries out cooling operations, a cooling circuit 701
In high-temperature water heat is transferred to the water at low temperature in secondary cooling circulation loop 702 by heat exchanger 704, secondary cooling follows
Loop back path 702 flows through 6 coolers and cools down.
Multiple water cooling units 703 are equipped in cooling circuit 701 of the cooling system 7, water cooling unit 703 is set
It sets in the power-supply system 6 and the power amplifying system 7, carries out heat exchange.
Power amplifying system 2, the cooling of power-supply system 6 use liquid cooling mode, total noise of centrifuge are reduced 10dB, while liquid cooling can
To ensure that solid-state devices die temperature is 20 DEG C low compared with forced air cooling, and temperature fluctuation range is small, stablizes relatively, is set to can be improved
Standby reliability, extends solid-state devices service life.
Transmitter further includes monitoring management system 8, and monitoring management system 8 is used for the control and protection to transmitter, to shape
State carries out real-time sampling, by showing that equipment is shown.
As shown in figure 3, the power amplifying system 2 includes digital staircase wave producer 201, digital staircase wave producer
Analog radio frequency pumping signal is converted to the switching signal arranged by certain sequential by 201, and digital staircase wave producer 201 exports
End is equipped with multiple digital distributors 202, and digital distributor 202 is connected separately with several power amplifiers 203, power amplifier
203 are connected separately with power combing transformer (not shown), and series connection becomes power conjunction to power combing transformer secondary output mutually
At circuit 204, and connects and use Superfine crystal material with the matched filtering system 3, the magnetic core of the power combing transformer 204.
Power amplifier still uses D classes " H " bridge circuit, gate drive signal to be controlled using phase-shifting full-bridge, and power is made to open
Be switched on or off when closing pipe difference, and the time be switched on or off by control every power switch tube, be close to no-voltage,
Zero stream switchs, and reduces peak voltage, the electric current that switching loss and power switch tube are born.Device for power switching uses SiC
More preferably, driving power smaller, device for power switching can be reduced for MOSFET and SiC Diode, on state resistance and switching characteristic
70% loss, New type power amplifier efficiency >=97%.
Power combing magnetic core of transformer uses ultracrystallite, the material that there is excellent comprehensive magnetic energy, collection silicon steel, perm to close
Golden, ferritic advantage, i.e., high magnetic strength, high permeability, low-loss and excellent temperature stability.Such as 1 ultracrystallite of table
Saturation induction density be ferritic 3 times, the magnet ring of same volume has more than 2 times of ferrite output power
Big anti-overload ability.The loss of its magnet ring is the 1/5~1/2 of ferrite loss in the frequency range of 20kHz~50kHz.Magnetic conduction
Rate is ferritic 10 times or more, therefore exciting power is small, thus decreases copper loss.The Curie temperature of ultracrystallite is 570 DEG C,
It is ferritic 3 times.Power combing transformer can enhance the moment impacts such as complete machine anti lightning, short circuit, overload using ultracrystallite
Ability.
1 ultracrystallite of table and manganese-zinc ferrite parameter comparison
As shown in Figure 1, the matched filtering system 3 includes match circuit 301,301 input terminal of match circuit and the work(
Rate amplification system 2 is connected, and 301 output end of match circuit is connected with filter circuit 302, and 302 output end of filter circuit is equipped with hilted broadsword
Commutator 303,303 1 branch of single-pole double-throw switch (SPDT) connect tuning system 4, and another branch connects fictitious load 5.
Power combing mode is to export several power amplifiers to carry out wrong phase amplitude superposition, output waveform after synthesis
For staircase waveform, harmonic component is small, small to filter circuit pressure, complete machine harmonic wave index≤- 60dB.Ladder is synthesized by power
Amplifier input signal carries out phase shift, and power amplifier itself does not change signal phase, achievees the effect that output signal misphase.Work(
Rate amplifier input phase shift signal generated by staircase generator, method be by the sine voltage signal of analog signal driver with
The method of reference voltage software compares to obtain a series of time pulses, i.e., with the voltage transverse cuts sine mould of certain amplitude
Quasi- signal obtains ladder square wave and is switched on and off time pulse, then these pulses are combined to obtain phase shift signal.
The tuning system 4 includes the intermediate tank circuit 401, and 401 input terminal of the intermediate tank circuit connects with the matched filtering system 3
It connects, 401 output end of the intermediate tank circuit is connected with antenna coupling unit 402, and antenna coupling unit 402 is connected with antenna tuning pavilion 403.
The power-supply system 6 includes 5 groups of switchgears 601, the high voltage power supply outside the connection of 601 input terminal of switchgear, switch
601 output end of cabinet is connected separately with power transformer 602, and each power transformer 602 is connected with 2 high frequency switch powers 603,
Multiple high frequency switch powers 603 constitute integrated drive generator 605, and integrated drive generator 605 is equipped with electrical power control cabinet 604, high frequency switch power
603 connect with the signal processing system 1, power amplifying system 2, matched filtering system 3, tuning system 4 respectively, provide electricity
Energy.
High-voltage DC power supply is the basis of entire transmitter normal operation, by the conversion, transmission and distribution to electric power,
Complete the power supply to the electrical equipments such as liquid cooling power amplifier in transmitter.Mainly by switchgear, power transformer, combination high frequency
The compositions such as Switching Power Supply power supply can be reduced centrally connected power supply load, reduce power-supply device cost, protected in this way to avoid interfering with each other
Card transmitter can be continuously in standby.High-voltage DC power supply uses Sofe Switch liquid cooling power supply, the power supply to use high frequency pulsewidth
Modulation technique, soft switch technique, liquid cooling technology, have it is efficient, Electro Magnetic Compatibility is good, noise is low, warm liter is low, reliability is high,
The features such as electric property is superior, small, easy for installation, maintenance is simple.The power supply is by multiple distributed switch power supply module groups
When at, individual power module failure, work can be automatically exited from, other modules can still keep power output, reliability high.
Workflow is as follows：
First, external information data (message) the arriving signal processing system 1 issued is believed by the very low frequency of this subsystem
The working method of data as required is modulated by number driver, and the analog radio frequency pumping signal of generation is sent to power amplifying system
2.The radio frequency analog signal of driver output is converted into through digital staircase wave producer 201 by a timing in power amplifying system 2
The switching signal of sequence arrangement, then by digital distributor 202 these switching signals are grouped, distributed, drive signal is provided
Power amplification is carried out to each power amplifier 203, amplified signal is carried out power combing by power synthesis circuit 204 again
It exports to matched filtering system 3.Matched filtering system 3 matches the output of power amplifying system 2, is filtered, and realization transmits
The matching of machine output impedance and fictitious load 5, and inhibit the secondary and above harmonic wave.Tuning system 4 is tuned antenna loop, most
Output power is transmitted to antenna with most effective state at last, and is gone out by aerial radiation.Power-supply system 6 is continual therebetween
Power supply is provided to each system of transmitter, equipment, cooling system 7 provides water cooling for equipment, and monitoring management system 8 completes transmitter
Control and protection, to state carry out real-time sampling, key state is monitored, monitoring center carry out interface form show
Show.
The automatic tuning manner that VLF emission machine uses is carries out automatic fine tuning on the basis of automatic pre-set.
Automatic pre-set：The frequency that transmitter is arranged according to very low frequency signal driver is to matched filtering system, tuning system
In switch, controllable impedance position carry out it is preset.VLF emission machine working frequency range is 15kHz~40kHz, by per 0.5kHz
One point carries out the storage of switch and controllable impedance location information, is directly invoked when preset.It can be increased preset according to user's needs
Point.If user has used the Frequency point for not storing preset position, control system will first, in accordance with its immediate Frequency point
Carry out preset, machine to be launched is finely adjusted again when being in small-power emission state.
Automatic fine tuning：It is a complete closed-loop control system, sampled point is set in tuning system necessary position, is adopted
Corresponding voltage, current signal.Signal processing system handles voltage, the current signal fetched to tune necessary letter automatically
Number, monitoring management system runs driving circuit according to autotuning algorithm, and driving tuning system constantly recycles approach complex resonance shape
State is finally completed tuning.Automatic tune of entire transmitter will be distributed progress, and when tuning needs to control to the size of radiofrequency signal
System ensures the safety of equipment when tuning, to accomplish the complex resonance state of the equal resonance of each section, and system is made to play maximum transmitting effect
Energy.
Described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the present invention
In embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
Claims (4)
1. a kind of very low frequency Liquid-cooled Solid-state Transmitter, which is characterized in that including being used to receive information data and by information data tune
System generates the signal processing system of analog radio frequency pumping signal, and signal processing system output end is serially connected with power amplifying system, work(
Rate amplification system is connected with the matched filtering system for being matched, being filtered for the output signal to power amplifying system, matching
Filtering system connects tuning system, and tuning system is used for the tuning process of signal, and signal is delivered to external emission antenna；Institute
It states matched filtering system and is connected with fictitious load for debugging, detecting；
The transmitter further includes power-supply system, and power-supply system is high-voltage DC power supply, respectively with the signal processing system, power
Amplification system, matched filtering system, tuning system connection, for providing electric energy；
Including cooling system, cooling system uses Two-way Cycle mode, cools for power-supply system, power amplifying system,
Including a cooling circuit, secondary cooling circulation loop, a cooling circuit, secondary cooling circulation loop are same
Shi Liujing is used to transmit the heat exchanger of heat, a cooling circuit flow through power-supply system and power amplifying system into
Heat is transferred to secondary cooling circulation loop by row cooling operations, the high-temperature water in a cooling circuit by heat exchanger
In water at low temperature, secondary cooling circulation loop flows through at least 1 cooler and cools down；
Including monitoring management system, monitoring management system is used for the control and protection to transmitter, and real-time sampling is carried out to state,
By showing that equipment is shown；
The power amplifying system includes digital staircase wave producer, and digital staircase wave producer turns analog radio frequency pumping signal
By the switching signal of certain sequential arrangement, digital staircase generator output end is equipped at least one digital distributor, digital for chemical conversion
Distributor is connected separately with several power amplifiers, and power amplifier is connected separately with power combing transformer, power combing
Transformer secondary output is mutually in series, and is connected to the matched filtering system, and the magnetic core of the power combing transformer uses ultra micro
Brilliant material；
The matched filtering system includes match circuit, and match circuit input terminal is connected with the power amplifying system, matching electricity
Road output end is connected with filter circuit, and filter circuit output end is equipped with single-pole double-throw switch (SPDT), the connection of one branch of single-pole double-throw switch (SPDT)
Tuning system, another branch connect fictitious load；
The tuning system includes the intermediate tank circuit, and intermediate tank circuit input terminal is connect with the matched filtering system, and the intermediate tank circuit is defeated
Outlet is connected with antenna coupling unit, and antenna coupling unit is connected with antenna tuning pavilion.
2. very low frequency Liquid-cooled Solid-state Transmitter according to claim 1, which is characterized in that the power amplifier uses D
Class A amplifier A, circuit mode are controlled using phase-shifting full-bridge, including four power switch tubes, and when every power switch tube difference is open-minded
Or shutdown, it is controlled to be switched on or off the time.
3. very low frequency Liquid-cooled Solid-state Transmitter according to claim 1, which is characterized in that the cooling system it is primary cold
But multiple water cooling units are equipped in circulation loop, water cooling unit is arranged in the power-supply system and the power amplifying system.
4. very low frequency Liquid-cooled Solid-state Transmitter according to claim 1, which is characterized in that the power-supply system includes at least
1 switchgear, the external high voltage power supply of switchgear input terminal connection, switchgear output end are connected with power transformer, electric power change
Depressor is connected at least one high frequency switch power, and the high frequency switch power of at least one constitutes integrated drive generator, and integrated drive generator is equipped with
Electrical power control cabinet, high frequency switch power respectively with the signal processing system, power amplifying system, matched filtering system, tuning
System connects, and provides electric energy.
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| CN201610680334.7A CN106100651B (en) | 2016-08-17 | 2016-08-17 | A kind of very low frequency Liquid-cooled Solid-state Transmitter |
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| CN201610680334.7A CN106100651B (en) | 2016-08-17 | 2016-08-17 | A kind of very low frequency Liquid-cooled Solid-state Transmitter |
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| CN107294548B (en) * | 2017-06-06 | 2019-09-17 | 武汉船舶通信研究所（中国船舶重工集团公司第七二二研究所） | A kind of LoranC system transmitter main circuit and its transmitted waveform generation method |
| CN107332574A (en) * | 2017-08-11 | 2017-11-07 | 北京北广科技股份有限公司 | A kind of high-power Loran-C pulse emitter and its waveform modulated method |
| CN110909514B (en) * | 2019-11-29 | 2023-05-30 | 北京北广科技股份有限公司 | Simulation debugging method and simulation debugging platform of matching network |
| CN112821899B (en) * | 2021-03-16 | 2022-02-18 | 武汉船舶通信研究所（中国船舶重工集团公司第七二二研究所） | Extremely-low-frequency high-power transmitting system |
| CN115118228A (en) * | 2022-07-13 | 2022-09-27 | 广州海格通信集团股份有限公司 | Medium-long wave signal processing device and system |
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| CN101115370A (en) * | 2007-08-14 | 2008-01-30 | 诶比控股集团杭州南广科技有限公司 | All-solid state wireless transmitting equipment and electronic power component dual-cooling source liquid cooling system |
| CN101835005A (en) * | 2010-04-08 | 2010-09-15 | 福建三元达通讯股份有限公司 | Liquid cooling transmitter system |
| CN204168697U (en) * | 2014-11-03 | 2015-02-18 | 中国电子科技集团公司第三十八研究所 | A kind of dual cycle cooling system for high-power electronic device |
| CN105245238A (en) * | 2015-10-21 | 2016-01-13 | 成都六三零电子设备有限公司 | 650MHz/150kW solid-state transmitter |
| CN205105198U (en) * | 2015-10-21 | 2016-03-23 | 成都六三零电子设备有限公司 | Solid -state transmitter of 325MHz25kW |
| CN205883207U (en) * | 2016-08-17 | 2017-01-11 | 北京北广科技股份有限公司 | Very low frequency liquid cooling solid state transmitter |
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| CN106100651A (en) | 2016-11-09 |
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