CN106100596A - A kind of power amplifying system of very low frequency Liquid-cooled Solid-state Transmitter - Google Patents
A kind of power amplifying system of very low frequency Liquid-cooled Solid-state Transmitter Download PDFInfo
- Publication number
- CN106100596A CN106100596A CN201610681188.XA CN201610681188A CN106100596A CN 106100596 A CN106100596 A CN 106100596A CN 201610681188 A CN201610681188 A CN 201610681188A CN 106100596 A CN106100596 A CN 106100596A
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- power
- power switch
- digital
- transformator
- combing
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- 230000015572 biosynthetic process Effects 0.000 claims abstract description 16
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 16
- 239000010752 BS 2869 Class D Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 5
- 239000013078 crystal Substances 0.000 claims description 4
- 230000003321 amplification Effects 0.000 claims description 3
- 230000005669 field effect Effects 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000010363 phase shift Effects 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- 229910001289 Manganese-zinc ferrite Inorganic materials 0.000 description 2
- JIYIUPFAJUGHNL-UHFFFAOYSA-N [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] JIYIUPFAJUGHNL-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000004224 protection Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- -1 inductance coil Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229910000889 permalloy Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/52—Circuit arrangements for protecting such amplifiers
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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
- H03F3/181—Low frequency amplifiers, e.g. audio preamplifiers
- H03F3/183—Low frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
- H03F3/211—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only using a combination of several amplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
- H03F3/217—Class D power amplifiers; Switching amplifiers
Abstract
The invention discloses the power amplifying system of a kind of very low frequency Liquid-cooled Solid-state Transmitter, including digital staircase wave producer, digital staircase generator output end is provided with digital distributor, digital distributor is connected to several power amplifiers, and power amplifier is connected to power combing transformator；Power amplifier is class-D amplifier, uses phase-shifting full-bridge to control, and including four power switch pipes, four power switch pipes are that H bridge type is arranged, two power switch pipe opposite in phase on same brachium pontis；Four power switch pipes, are switched on or off time different, are switched on or off the time controlled；Power combing transformator outlet side coil is sequentially connected in series, and constitutes power synthesis circuit.The present invention can reduce switching loss and the peak voltage born, electric current, prevent short circuit and burn device, it is not necessary to tuned cell, facilitate mounting or dismounting, being beneficial to working service, power output transformer uses ultracrystallite can strengthen the moment impact abilities such as complete machine anti lightning, short circuit, overload.
Description
Technical field
The present invention relates to power amplifying system, particularly relate to the power amplification system of a kind of very low frequency Liquid-cooled Solid-state Transmitter
System.
Background technology
Existing very low frequency solid state transmitter power amplifier uses D class " H " bridge circuit mostly, and gate drive signal is
Bipolarity hard switching control mode, device for power switching bears big current stress and voltage stress at switching moments, and it is open-minded
Relatively big with turn off process loss, especially pronounced during high frequency.Device for power switching uses MOSFET or IGBT, MOSFET on state resistance
Relatively big, on-state loss is relatively big, and IGBT exists tail currents, and frequency characteristic is poor, and switching loss is big.Existing efficiency power amplifier is only
It is 92%.
Power output transformer magnetic core uses Mn ferrite, although this material high-frequency loss is relatively low, but because of its saturated magnetic
Influence value (Bs) is relatively low, high-power under the conditions of the volume and weight of magnet ring can be made bigger, yield rate is low.Additionally, it is ferritic
Curie temperature is relatively low, poor heat stability.
Power combing mode carries out same phase amplitude superposition for being exported by several power amplifiers, output waveform after synthesis
For square wave, harmonic component is big, big to filter circuit pressure, complete machine harmonic wave index≤-45dB.
Power synthesis circuit can be to use directly series connection, the most in parallel, transformer series three kinds of modes of synthesis, this transmitter
Using transformer series synthesis mode, which, without tuned cell, facilitates mounting or dismounting, beneficially working service.Other two kinds of power
Power amplifier unit output is directly carried out series and parallel synthesis by combiner circuit, although efficiency can be improved 1%, save certain funds,
But there is greater risk.Its risk mainly have following some:
A) not isolation between power amplifier unit, can produce and influence each other, and power amplifier unit is easily disturbed, and stability is relatively low.And
Pass through transformator, it is possible to achieve power amplifier unit mutually isolated；
B) power amplifier unit is not isolated with load circuit, and the Parameters variation of load circuit directly reflexes to power amplifier unit, right
Power amplifier unit impact is relatively big, reduces power amplifier unit reliability.And pass through transformator, it is possible to achieve power amplifier unit and load circuit
Mutually isolated, and owing to transformer secondary output inductance value is the biggest, it is ensured that electric current can not suddenly change, and improves the wink of power amplifier unit
Between anti lightning stream ability.
C) multiple power amplifier units are directly connected synthesis, and total output impedance is the highest, differ relatively greatly with fictitious load impedance differences,
Causing match circuit Q-value too high, during off resonance, power loss is big；Simultaneously to capacitor, inductance coil, shell switch in match circuit
Pressure design propose the highest requirement, Project Realization difficulty is big, costly, and easily strikes sparks in real work, fault
Directly it is reflected back power amplifier unit, burns power amplifier unit.And by transformator, impedance transformation can be carried out, alleviate match circuit
Pressure, it is ensured that the safety of power amplifier unit.
D) multiple power amplifier units directly and are unified into, and first need the phase place one of strict guarantee each power amplifier unit output signal
Fixed, amplitude is identical, and otherwise after synthesis, harmonic component is big, can cause inactivity output after synthesis time serious.Secondly, large number of
Power amplifier unit there is some difference property, can bring imbalance, and generation is poured in down a chimney, even if it is the most undesirable to increase current-sharing measure effect.Directly
Connect and be unified into and be only applicable to direct current signal parallel connection, be not suitable for very low frequency signal.
Summary of the invention
It is an object of the invention to provide a kind of safe, durable power amplifying system for very low frequency Liquid-cooled Solid-state Transmitter.
For achieving the above object, the technical scheme is that the power of a kind of very low frequency Liquid-cooled Solid-state Transmitter
Amplification system, including digital staircase wave producer, analog radio frequency pumping signal is changed into by necessarily by digital staircase wave producer
The switching signal of sequential arrangement, digital staircase generator output end is provided with at least 1 digital distributor, and digital distributor is respectively
Connecting and have several power amplifiers, power amplifier is connected to power combing transformator；
Described power amplifier is class-D amplifier, and circuit mode uses phase-shifting full-bridge to control, including four power switch
Pipe, four power switch pipes are that H bridge type is arranged, and two power switch pipe opposite in phase on same brachium pontis, according to field effect transistor
Parameter leaves Dead Time；
Described four power switch pipes, are switched on or off time respectively different, are switched on or off the time controlled；Diagonal is arranged
Two switching tubes all turn on, power amplifier unit just has output, every power switch pipe ON time to be half period；
Described power switch pipe is respectively equipped with digital drive protected location；
Described power combing transformator includes input side coil, outlet side coil, magnetic core, and described power amplifier is connected to
Input side coil, power combing transformator outlet side coil is sequentially connected in series, and constitutes power synthesis circuit, one end of outlet side coil
Connecting ground wire, the other end is the outfan of power amplifying system；
The magnetic core of described power combing transformator uses Superfine crystal material.
The invention has the beneficial effects as follows:
1. power amplifier unit uses phase-shifting full-bridge to control, and makes to be switched on or off during power switch pipe difference, and every by controlling
The time that is switched on or off of power switch pipe, reduce switching loss and peak voltage that pipe bears, electric current, prevent down tube
Straight-through, it is short-circuited and burns device and power supply.
2. using transformer series synthesis mode, which, without tuned cell, facilitates mounting or dismounting, beneficially working service.
3. power output transformer uses ultracrystallite can strengthen the moment impact abilities such as complete machine anti lightning, short circuit, overload.
Accompanying drawing explanation
Fig. 1 is the connection diagram of the present invention；
Fig. 2 is circuit theory diagrams of the present invention；
Fig. 3 is signal control planning figure of the present invention；
Fig. 4 is power synthesis circuit equivalent circuit diagram of the present invention；
Table 1 is ultracrystallite and manganese-zinc ferrite parameter comparison.
Detailed description of the invention
Below in conjunction with accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described.
As it is shown in figure 1, the power amplifying system of a kind of very low frequency Liquid-cooled Solid-state Transmitter, occur including digital staircase
Device, analog radio frequency pumping signal is changed into the switching signal arranged by certain sequential, digital staircase by digital staircase wave producer
Wave producer outfan is provided with at least 1 digital distributor, and digital distributor is connected to several power amplifiers, power
Amplifier is connected to power combing transformator.
As in figure 2 it is shown, described power amplifier is class-D amplifier, including four power switch pipes, use phase-shifting full-bridge control
System；It is switched on or off during power switch pipe difference, and by controlling the time that is switched on or off of every power switch pipe, reduction is opened
Close loss and pipe bear peak voltage, electric current.The most cornerwise two switching tubes all turn on, and power amplifier unit just has output
Power.Two switching tubes first turned in each cycle are referred to as leading-bridge, and two switching tubes of rear conducting are the most delayed
Brachium pontis.Every power switch pipe ON time close to half period, i.e. 180 °, the opposite in phase of same two switching tubes of brachium pontis,
Leave Dead Time (this time adjustable) according to field effect transistor parameter, prevent down tube lead directly to, be short-circuited burn device and
Power supply.
Described four power switch pipes are respectively equipped with four digital drive protected locations, No. one, No. two, No. three, No. four.Merit
Rate switch uses SiC MOSFET and SiC Diode, on state resistance and switching characteristic more preferably, drives power less, power switch
Device can reduce 70% loss, efficiency >=97%.
As it is shown on figure 3, power amplifier input-output wave shape, wherein count word drive protected location output signal A, two
Count word drive protected location output signal B, three count word drive protected location output signals C, four count word drive protections are single
Unit's output signal D.
In the present invention, power combing mode is for carrying out wrong phase amplitude superposition by the output of several power amplifiers, after synthesis
Output waveform is staircase waveform, and harmonic component is little, little to filter circuit pressure, complete machine harmonic wave index≤-60dB.Ladder synthesis is logical
Crossing and power amplifier input signal is carried out phase shift, power amplifier itself does not change signal phase, reaches output signal misphase
Effect.Power amplifier input phase shift signal is produced by staircase generator, and method is by the sine of analogue signal activator
It is horizontal that voltage signal obtains a series of time pulse, the i.e. voltage by certain amplitude compared with the way of reference voltage software
Cutting sinusoidal analog signal obtains ladder square wave and is switched on and off time pulse, then is combined these pulses obtaining phase shift letter
Number.
Described power combing transformator includes input side coil, outlet side coil, magnetic core, and described power amplifier is connected to
Input side coil, power combing transformator outlet side coil is sequentially connected in series, and constitutes power synthesis circuit, one end of outlet side coil
Connecting ground wire, the other end is the outfan of power amplifying system.
The magnetic core of described power combing transformator uses Superfine crystal material.Superfine crystal material has excellent comprehensive magnetic
Can, integrating silicon steel, permalloy, ferritic advantage, the temperature of the highest magnetic strength, high permeability, low-loss and excellence is steady
Qualitative.As shown in table 1, the saturation induction density of ultracrystallite is ferritic 3 times, and the magnet ring of same volume is more defeated than ferrite
Go out big 2 times of power, have bigger anti-overload ability simultaneously.The loss of its magnet ring is ferrite in the frequency range of 20kHz～50kHz
The 1/5～1/2 of loss.Permeability is ferritic more than 10 times, and therefore exciting power is little, thus decreases copper loss.Ultra micro
Brilliant Curie temperature is 570 DEG C, is ferritic 3 times.Power output transformer use ultracrystallite can strengthen complete machine anti lightning,
The moment impact abilities such as short circuit, overload.
Table 1 ultracrystallite and manganese-zinc ferrite parameter comparison
Described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the present invention
In embodiment, the every other enforcement that those of ordinary skill in the art are obtained under not making creative work premise
Example, broadly falls into the scope of protection of the invention.
Claims (1)
1. the power amplifying system of a very low frequency Liquid-cooled Solid-state Transmitter, it is characterised in that include digital staircase wave producer,
Analog radio frequency pumping signal is changed into the switching signal arranged by certain sequential by digital staircase wave producer, and digital staircase is sent out
Raw device outfan is provided with at least 1 digital distributor, and digital distributor is connected to several power amplifiers, power amplification
Device is connected to power combing transformator；
Described power amplifier is class-D amplifier, and circuit mode uses phase-shifting full-bridge to control, including four power switch pipes, and four
Propping up power switch pipe is that H bridge type is arranged, and two power switch pipe opposite in phase on same brachium pontis stay according to field effect transistor parameter
There is Dead Time；
Described four power switch pipes, are switched on or off time respectively different, are switched on or off the time controlled；The two of diagonal setting
Propping up switching tube all to turn on, power amplifier unit just has output, every power switch pipe ON time to be half period；
Described power switch pipe is respectively equipped with digital drive protected location；
Described power combing transformator includes input side coil, outlet side coil, magnetic core, and described power amplifier is connected to input
Lateral coil, power combing transformator outlet side coil is sequentially connected in series, and constitutes power synthesis circuit, and one end of outlet side coil connects
Ground wire, the other end is the outfan of power amplifying system；
The magnetic core of described power combing transformator uses Superfine crystal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610681188.XA CN106100596A (en) | 2016-08-17 | 2016-08-17 | A kind of power amplifying system of very low frequency Liquid-cooled Solid-state Transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610681188.XA CN106100596A (en) | 2016-08-17 | 2016-08-17 | A kind of power amplifying system of very low frequency Liquid-cooled Solid-state Transmitter |
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| Publication Number | Publication Date |
|---|---|
| CN106100596A true CN106100596A (en) | 2016-11-09 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610681188.XA Pending CN106100596A (en) | 2016-08-17 | 2016-08-17 | A kind of power amplifying system of very low frequency Liquid-cooled Solid-state Transmitter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022261854A1 (en) * | 2021-06-16 | 2022-12-22 | 深圳市汇顶科技股份有限公司 | Power amplifier, chip and terminal device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4580111A (en) * | 1981-12-24 | 1986-04-01 | Harris Corporation | Amplitude modulation using digitally selected carrier amplifiers |
| US5703536A (en) * | 1996-04-08 | 1997-12-30 | Harris Corporation | Liquid cooling system for high power solid state AM transmitter |
| US6211735B1 (en) * | 2000-01-21 | 2001-04-03 | Harris Corporation | RF power amplifier having improved power supply for RF drive circuits |
| CN101330260A (en) * | 2008-07-22 | 2008-12-24 | 南京航空航天大学 | Method for synthesizing variable current of high-power staircase waveform with rapid dynamic response speed |
| CN203278750U (en) * | 2013-05-06 | 2013-11-06 | 北京北广科技股份有限公司 | Ultracrystalline power synthesizing circuit |
| CN103825562A (en) * | 2012-11-19 | 2014-05-28 | 北京北广科技股份有限公司 | Power amplifier and power amplifying system with field-effect transistors |
| CN205883171U (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's power amplifier system |
-
2016
- 2016-08-17 CN CN201610681188.XA patent/CN106100596A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4580111A (en) * | 1981-12-24 | 1986-04-01 | Harris Corporation | Amplitude modulation using digitally selected carrier amplifiers |
| US5703536A (en) * | 1996-04-08 | 1997-12-30 | Harris Corporation | Liquid cooling system for high power solid state AM transmitter |
| US6211735B1 (en) * | 2000-01-21 | 2001-04-03 | Harris Corporation | RF power amplifier having improved power supply for RF drive circuits |
| CN101330260A (en) * | 2008-07-22 | 2008-12-24 | 南京航空航天大学 | Method for synthesizing variable current of high-power staircase waveform with rapid dynamic response speed |
| CN103825562A (en) * | 2012-11-19 | 2014-05-28 | 北京北广科技股份有限公司 | Power amplifier and power amplifying system with field-effect transistors |
| CN203278750U (en) * | 2013-05-06 | 2013-11-06 | 北京北广科技股份有限公司 | Ultracrystalline power synthesizing circuit |
| CN205883171U (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's power amplifier system |
Non-Patent Citations (1)
| Title |
|---|
| 付微 等: "一种新型固态大功率发射机的功放电路设计", 《软件导刊》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022261854A1 (en) * | 2021-06-16 | 2022-12-22 | 深圳市汇顶科技股份有限公司 | Power amplifier, chip and terminal device |
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Application publication date: 20161109 |