CN106571779A - Energy-saving type adaptive power amplifier - Google Patents
Energy-saving type adaptive power amplifier Download PDFInfo
- Publication number
- CN106571779A CN106571779A CN201610929722.4A CN201610929722A CN106571779A CN 106571779 A CN106571779 A CN 106571779A CN 201610929722 A CN201610929722 A CN 201610929722A CN 106571779 A CN106571779 A CN 106571779A
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- amplifier
- microstrip line
- attenuator
- power amplifier
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Classifications
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- 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
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
- H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
- H03F1/0211—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the supply voltage or current
- H03F1/0244—Stepped control
- H03F1/025—Stepped control by using a signal derived from the input signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
Abstract
The invention comprises an energy-saving type adaptive power amplifier. Problems of extremely high direct-current power consumed by the power amplifier and poor conversion efficiency can be solved. Input signals are divided into two paths through a first attenuator (1); one path of input signals pass through a second attenuator (2) and a third attenuator (3) and then are conveyed to an amplifier (4) and the output of the amplifier (4) is connected with an isolator (5); and the other path of input signals pass through a resistor (6) and a fourth attenuator (7) and then are transmitted to a detector (8). Only a small part of powers of the input signals are transmitted to the detector; the detector converts the powers into voltages; the voltages are transmitted to a switch (11) through an operational amplifier (9) and a comparator (10); and the switch is connected with the amplifier. The voltage amplified by the operational amplifier (9) is compared with a reference voltage of the comparator (10); if the voltage is lager than the reference voltage, the switch (11) is turned on and the amplifier works; and otherwise, the amplifier does not work.
Description
Technical field：
The invention belongs to microwave radio active device technical field, more particularly to the power amplification in microwave radio active device
Device.
Background technology：
One of application of power amplifier is that signal weaker in mobile communication is amplified, so as to expand the covering model of signal
Enclose.Meanwhile, power amplifier is the larger device of caloric value in mobile base station.Due to the dc power pole that this device is consumed
Greatly, while transformation efficiency is not high, the waste of the energy is caused.Further, since temperature is raised, the performance of device also can decline.Pass
The method of the raising efficiency power amplifier of system has using the power amplifier of the classes such as B, C, D, E to replace class-a amplifier, but
It is that this can bring the problem that the linearity is deteriorated.At night, reduced using the number of users of mobile phone, or hand is used without user
In the case of machine, also in work, this can cause the waste of the energy to the power amplifier of base station.
The content of the invention：
The purpose of the present invention is to propose to a kind of energy-saving adapter power amplifier, can close work(in the case of without user
Rate amplifier, the shortcoming for overcoming existing power amplifier energy consumption big.
What the present invention was realized in：
Energy-saving adapter power amplifier, by being divided into two-way after the first attenuator 1, all the way successively Jing's input signal second declines
Subtract device 2, the 3rd attenuator 3 and be transported to amplifier 4, the output of amplifier 4 connects isolator 5, another road Jing resistance the 6, the 4th successively
Attenuator 7 is transported to wave detector 8, and power is converted into electricity by input signal only fraction power transmission to wave detector 8, wave detector 8
Pressure, then successively Jing operational amplifiers 9, comparator 10 are transferred to switch 11, switch 11 is connected with amplifier 4, and operational amplifier 9 is put
Big voltage is compared with the reference voltage of comparator 10, if voltage is more than reference voltage, switch 11 is opened, amplifier 4
Work, otherwise, amplifier does not work.
First attenuator 1, the 3rd attenuator 3, the 4th attenuator 7 is the Π shapes decay that three Chip-R cascades are constituted
Device, the second attenuator 2 adopts chip TG102M3-100, isolator 5 to adopt chip TG102M3-100, wave detector 8 to adopt chip
AD8314, operational amplifier 9 adopts chip MAX4480axk, comparator 10 to adopt chip MAX999, switch 11 to adopt chip
FDC5614, amplifier 4 includes input matching circuit 41, output matching circuit 42, power amplifier chip 40, the first biased electrical
Road 43, the second biasing circuit 44, the 3rd biasing circuit 45, the 4th biasing circuit 46, earthed circuit 47, X1, X2 are respectively input into
Output signal port, is connected respectively with the 3rd attenuator 3, isolator 5, and X3, X4, X5, X6 are direct current biasing port, with direct current
Source connection, plated-through hole and pad constitute the ground 48 of circuit, and power amplifier chip 40 is MW7IC2240, and its pin divides
Not Wei P1 to P16, input matching circuit 41 by the first electric capacity 411 connected, the first microstrip line 412, the second electric capacity in parallel
413, the second microstrip line 414 is sequentially connected composition, and the second microstrip line 414 is connected with the P11 pin of power amplifier chip 40, output
Match circuit 42 by the 3rd microstrip line 421, the 3rd electric capacity 422 in parallel, the 4th microstrip line 423, the 4th electric capacity 424 in parallel,
5th electric capacity 425 of series connection, and the 5th microstrip line 426 in parallel branch, the 6th electric capacity 427 in parallel, the 6th microstrip line
The 7th microstrip line 429 on 428, and series arm, the 7th electric capacity 430 in parallel is sequentially connected compositions, the 3rd microstrip line 421 and
The P3 pin of power amplifier chip 40 are connected, the first biasing circuit 43 by the 8th microstrip line 431, the in parallel 8th, the 9th, the
Tenth, the 11st electric capacity 432,433,434,435 is sequentially connected composition, and the 8th microstrip line 431 and power amplifier chip 40
P3 pin be connected, the second biasing circuit 44 by the 9th microstrip line 441, the first resistor 442 of series connection, the 12nd electric capacity in parallel
443 are sequentially connected composition, and the 9th microstrip line 441 is connected with the P9 pin of power amplifier chip 40, the 3rd biasing circuit 45
By the tenth microstrip line 451, the second resistance 452 of series connection, the 13rd electric capacity 453 in parallel is sequentially connected composition, and the tenth micro-
Be connected with the P8 pin of power amplifier chip 40 with line 451, the 4th biasing circuit 46 by the 11st microstrip line 461, in parallel the
14,15,16 electric capacity 462,463,464 are sequentially connected composition, and the 11st microstrip line 461 and power amplifier chip
40 P13 pin are connected, and, by the 12nd microstrip line 471, the 17th electric capacity 472,18 electric capacity 473 in parallel are successively for earthed circuit 47
It is connected and constitutes, and the 12nd microstrip line 471 is connected with the P7 pin of power amplifier chip 40, and power amplifier chip 40 is by straight
Stream offset port X4, X5 is connected with switch 11.
The value of resistance 6 is bigger, and the energy for being assigned to wave detector 8 is fewer, and the energy for being assigned to amplifier 4 is more, resistance 6
When being worth big 500 ohm, input signal energy major part is transferred to amplifier 4, and only fraction is transferred to wave detector 8.
When wave detector 8 detects input power less than -7dBm, operational amplifier 9 amplifies detecting circuit, its output
Voltage disconnects certainly less than the reference voltage 2.75V of comparator 10, switch 11, and amplifier 4 does not work, and now not thinks there is use
Family, conversely, when the power that wave detector 8 is detected is more than -4dBm, the detecting circuit of the output of operational amplifier 9 is naturally larger than and compares
The reference voltage 2.75V of device 10, then it is assumed that there is user, switch 11 leads to, and amplifier 4 is activated, and starts working, and works as operational amplifier
9 detect input power more than -7dBm, are transition state during less than -4dBm, and amplifier 4 may work and be likely to not work.
First attenuator 1, the second attenuator 2, the 3rd attenuator 3, the pad value of the 4th attenuator 7 be respectively 4.95dB,
4dB, 5.9dB, 2.05dB, the resistance of resistance 6 is 1000 ohm.
The principle of technical scheme is：Input signal passes through to be divided into two-way after the first attenuator 1, all the way Jing second
Attenuator 2, the 3rd attenuator 3 are transported to amplifier 4, another road Jing resistance 6, the 4th attenuator 7, wave detector 8.By rationally setting
The value of amplifier 4 and the attenuator before wave detector 8 and resistance 6 is put, when the value of particularly resistance 6 is larger, it is possible to make energy
Major part is transferred to amplifier 4, and only fraction is transferred to wave detector 8.Power is converted into voltage, Jing operation amplifiers by wave detector 8
Device 9 amplifies, and is compared with the reference voltage of comparator 10, if voltage is more than 2.75V, switch 11 is opened, amplifier 4
Work, otherwise, amplifier does not work.Amplifier 4 includes input matching circuit 41, output matching circuit 42, power amplifier core
Piece 40, power amplifier chip is MW7IC2240, and its pin is respectively P1 to P16, the He of input matching circuit 41 in amplifier 4
Output matching circuit 42 is respectively intended to improve the input and output standing wave of circuit, and port x 1 connects the 3rd attenuator 3 and exports, and port x 2 connects
Isolator 5, the effect of first, second, third, fourth biasing circuit 43,44,45,46 is provided for power amplifier chip 40
Suitable Dc bias, makes power amplifier chip 40 be operated in optimum state.
Said elements 1-11 is welded on circuit substrate, selects different circuit substrates, the input matching electricity of amplifier 4
Road 41, output matching circuit 42 has different, affects less to the circuit of other parts.Circuit substrate is that 0.508mm is thick
The Rogers 4350B of degree, circuit is operated in 869MHz to 894MHz, and gain is 20dB, peak power output be 39dBm ±
2dBm, gain flatness is ± 1.5dB, and maximal input is 19dBm, and standing wave is less than 1.5, when input power is more than -4dBm
When, power amplifier is opened, and when input power is less than -7dBm, power amplifier is closed.Above-mentioned statement and reference voltage for 2.75V statement etc.
Together.The detecting circuit that possible -7dBm is obtained is 2.6V, and the detecting circuit that -4dBm is obtained is 2.85V, so during -7dBm, electricity
Pressure is less than 2.75V, and power amplifier is to close.
The advantages of the present invention：
Compare and traditional power amplifier, the present invention can automatic detection whether there is user, when detect input power less than-
During 7dBm, the detecting circuit of the output of operational amplifier 9 is less than 2.75V, and after comparing with comparator 10, switch 11 disconnects, and amplifies
Device 4 does not work, and now not thinks there is user, conversely, when the power for detecting is more than -4dBm, then it is assumed that there is user, amplify
Device 4 is activated, and starts working, therefore the present invention has the advantages that energy saving.
Description of the drawings：
Fig. 1 is the theory diagram of the present invention
Fig. 2 is the schematic diagram of amplifier section of the present invention
Specific embodiment：
Below in conjunction with the accompanying drawings the present invention will be further described with specific embodiment：As shown in figure 1, a kind of energy-saving self adaptation work(
Rate amplifier, including the first attenuator 1, the second attenuator 2, the 3rd attenuator 3, amplifier 4, isolator 5, resistance 6, the 4th declines
Subtract device 7, wave detector 8, operational amplifier 9, comparator 10, switch 11, the first attenuator 1 successively with the second attenuator 2, the 3rd declines
Subtract device 3, amplifier 4, isolator 5 is connected, the main road of composition power amplifier, the first attenuator 1, successively with resistance 6, the 4th declines
Subtract device 7, wave detector 8, operational amplifier 9, comparator 10, switch 11, amplifier 4 is connected, and constitutes control loop, the first attenuator
1, the 3rd attenuator 3, the 4th attenuator 7 is the Π shape attenuators that three Chip-R cascades are constituted, and the second attenuator 2 adopts core
Piece TG102M3-100, isolator 5 adopts chip TG102M3-100, wave detector 8 to adopt chip AD8314, operational amplifier 9
Using chip MAX4480axk, comparator 10 adopts chip MAX999, switch 11 to adopt chip FDC5614.Shown in Fig. 2, amplify
Device 4 includes input matching circuit 41, output matching circuit 42, power amplifier chip 40, the first biasing circuit 43, the second biasing
Circuit 44, the 3rd biasing circuit 45, the 4th biasing circuit 46, earthed circuit 47, X1, X2 are respectively input/output signal port,
It is connected with the 3rd attenuator 3, isolator 5 respectively, X3, X4, X5, X6 are direct current biasing port, are connected with dc source, metallizes
Through hole and pad constitute the ground 48 of circuit, and power amplifier chip 40 is MW7IC2240, and its pin is respectively P1 to P16, defeated
Enter match circuit 41 by the first electric capacity 411 connected, the first microstrip line 412, the second electric capacity 413 in parallel, the second microstrip line 414
Composition is sequentially connected, the second microstrip line 414 is connected with the P11 pin of power amplifier chip 40, and output matching circuit 42 is by the 3rd
Microstrip line 421, the 3rd electric capacity 422 in parallel, the 4th microstrip line 423, the 4th electric capacity 424 in parallel, the 5th electric capacity of series connection
The 5th microstrip line 426 on 425, and parallel branch, the 6th electric capacity 427 in parallel, the 6th microstrip line 428, and in series arm
The 7th microstrip line 429, the 7th electric capacity 430 in parallel is sequentially connected compositions, the 3rd microstrip line 421 and power amplifier chip 40
P3 pin be connected, the first biasing circuit 43 by the 8th microstrip line 431, the eight, the nine, the ten, the 11st electric capacity 432 in parallel,
433rd, 434,435 composition is sequentially connected, and the 8th microstrip line 431 is connected with the P3 pin of power amplifier chip 40, and second is inclined
Circuits 44 are sequentially connected composition by the 9th microstrip line 441, the first resistor 442 of series connection, the 12nd electric capacity 443 in parallel, and
And the 9th microstrip line 441 be connected with the P9 pin of power amplifier chip 40, the 3rd biasing circuit 45 by the tenth microstrip line 451, string
The second resistance 452 of connection, the 13rd electric capacity 453 in parallel is sequentially connected composition, and the tenth microstrip line 451 and power amplifier
The P8 pin of chip 40 are connected, the 4th biasing circuit 46 by the 11st microstrip line 461, the in parallel 14th, 15,16 electric capacity
462nd, 463,464 composition is sequentially connected, and the 11st microstrip line 461 is connected with the P13 pin of power amplifier chip 40, ground connection
Circuit 47 is sequentially connected composition, and the tenth by the 12nd microstrip line 471, the 17th electric capacity 472 of parallel connection, 18 electric capacity 473
Two microstrip lines 471 are connected with the P7 pin of power amplifier chip 40.
Wherein, the substrate of circuit is the Rogers 4350B of 0.508mm thickness, and circuit is operated in 869MHz to 894MHz, is increased
Benefit is 20dB, and peak power output is 39dBm ± 2dBm, and gain flatness is ± 1.5dB, and maximal input is 19dBm, is stayed
Ripple is less than 1.5, and when input power is more than -4dBm, power amplifier is opened, and when input power is less than -7dBm, power amplifier is closed.
Claims (5)
1. energy-saving adapter power amplifier, it is characterised in that input signal passes through the first attenuator（1）After be divided into two-way, one
Road attenuators of Jing second successively（2）, the 3rd attenuator（3）It is transported to amplifier（4）, amplifier（4）Output connect isolator
（5）, another road Jing resistance successively（6）, the 4th attenuator（7）It is transferred to wave detector（8）, input signal only fraction power transmission
To wave detector（8）, wave detector（8）Power is converted into into voltage, then Jing operational amplifiers successively（9）, comparator（10）It is transferred to
Switch（11）, switch（11）With amplifier（4）Connection, operational amplifier（9）The voltage of amplification is electric with the reference of comparator (10)
Pressure is compared, if voltage is more than reference voltage, switch (11) is opened, amplifier operation, and otherwise, amplifier does not work.
2. energy-saving adapter power amplifier according to claim 1, it is characterised in that the first attenuator（1）, the 3rd
Attenuator（3）, the 4th attenuator（7）For the Π shape attenuators that three Chip-R cascades are constituted, the second attenuator（2）Using core
Piece TG102M3-100, isolator（5）Using chip TG102M3-100, wave detector（8）Using chip AD8314, operational amplifier
（9）Using chip MAX4480axk, comparator（10）Using chip MAX999, switch（11）Using chip FDC5614, amplifier
（4）Including input matching circuit（41）, output matching circuit（42）, power amplifier chip（40）, the first biasing circuit（43）,
Second biasing circuit（44）, the 3rd biasing circuit（45）, the 4th biasing circuit（46）, earthed circuit（47）, X1, X2 are respectively defeated
Enter output signal port respectively with the 3rd attenuator（3）, isolator（5）Connection, X3, X4, X5, X6 are direct current biasing port, with
Dc source connection, plated-through hole and pad constitute the ground of circuit（48）, power amplifier chip 40 is MW7IC2240,
Its pin is respectively P1 to P16, input matching circuit（41）By the first electric capacity connected（411）, the first microstrip line（412）, and
Second electric capacity of connection（413）, the second microstrip line（414）It is sequentially connected composition, the second microstrip line（414）With power amplifier chip
（40）P11 pin be connected, output matching circuit（42）By the 3rd microstrip line（421）, the 3rd electric capacity of parallel connection（422）, the 4th is micro-
Band line（423）, the 4th electric capacity of parallel connection（424）, the 5th electric capacity of series connection（425）, and the 5th microstrip line in parallel branch
（426）, the 6th electric capacity of parallel connection（427）, the 6th microstrip line（428）, and the 7th microstrip line in series arm（429）, it is in parallel
The 7th electric capacity（430）It is sequentially connected composition, the 3rd microstrip line（421）With power amplifier chip（40）P3 pin be connected, the
One biasing circuit（43）By the 8th microstrip line（431）, the eight, the nine, the ten, the 11st electric capacity of parallel connection（432）（433）
（434）（435）It is sequentially connected composition, and the 8th microstrip line（431）With power amplifier chip（40）P3 pin be connected, second
Biasing circuit（44）By the 9th microstrip line（441）, the first resistor of series connection（442）, the 12nd electric capacity of parallel connection（443）Phase successively
Even constitute, and the 9th microstrip line（441）With power amplifier chip（40）P9 pin be connected, the 3rd biasing circuit（45）By
Ten microstrip lines（451）, the second resistance of series connection（452）, the 13rd electric capacity of parallel connection（453）It is sequentially connected composition, and the tenth
Microstrip line（451）With power amplifier chip（40）P8 pin be connected, the 4th biasing circuit（46）By the 11st microstrip line
（461）, the in parallel 14th, 15,16 electric capacity（462）（463）（464）It is sequentially connected composition, and the 11st microstrip line
（461）With power amplifier chip（40）P13 pin be connected, earthed circuit（47）By the 12nd microstrip line（471）, in parallel the
17 electric capacity（472）, 18 electric capacity（473）It is sequentially connected composition, and the 12nd microstrip line（471）With power amplifier chip
（40）P7 pin be connected, power amplifier chip（40）By direct current biasing port x 4, X5 and switch（11）Connection.
3. energy-saving adapter power amplifier according to claim 1 and 2, it is characterised in that the value of resistance (6) is bigger,
The energy for being assigned to the input signal of wave detector (8) is fewer, is assigned to amplifier（4）Input signal energy it is more, resistance
Value be more than 500 ohm when, input signal energy major part is transferred to amplifier, and only fraction is transferred to wave detector（8）.
4. energy-saving adapter power amplifier according to claim 3, it is characterised in that work as wave detector（8）Detect defeated
When entering power less than -7dBm, operational amplifier amplifies detecting circuit, and the voltage of its output is certainly less than comparator（10）Ginseng
Voltage 2.75V is examined, is switched（11）Disconnect, amplifier（4）Do not work, now not think there is user, conversely, working as wave detector（8）
The power for detecting is more than -4dBm, operational amplifier（9）The detecting circuit of output is naturally larger than comparator（10）Reference voltage
2.75V, then it is assumed that there is user, switch（11）It is logical, amplifier（4）It is activated, starts working, works as operational amplifier（9）Detection
It is more than -7dBm to input power, is transition state during less than -4dBm, amplifier（4）May work and be likely to not work.
5. energy-saving adapter power amplifier according to claim 3, it is characterised in that the first attenuator（1）, second
Attenuator（2）, the 3rd attenuator（3）, the 4th attenuator（7）Pad value be respectively 4.95dB, 4dB, 5.9dB, 2.05dB, electricity
Resistance（6）Resistance be 1000 ohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610929722.4A CN106571779B (en) | 2016-10-31 | 2016-10-31 | Energy-saving adapter power amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610929722.4A CN106571779B (en) | 2016-10-31 | 2016-10-31 | Energy-saving adapter power amplifier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106571779A true CN106571779A (en) | 2017-04-19 |
| CN106571779B CN106571779B (en) | 2019-11-01 |
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ID=58534619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610929722.4A Active CN106571779B (en) | 2016-10-31 | 2016-10-31 | Energy-saving adapter power amplifier |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113381701A (en) * | 2021-06-30 | 2021-09-10 | 上海航天测控通信研究所 | Microwave solid-state power amplifier |
| CN113644632A (en) * | 2021-07-01 | 2021-11-12 | 南京理工大学 | High-power automatic protection circuit based on MEMS series switch |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09116360A (en) * | 1995-10-20 | 1997-05-02 | Fujitsu Ltd | Automatic gain control amplifier |
| CN201766557U (en) * | 2010-06-12 | 2011-03-16 | 深圳市国人射频通信有限公司 | Radio frequency (RF) power amplitude limiting circuit |
| US20170070141A1 (en) * | 2015-09-04 | 2017-03-09 | Qualcomm Incorporated | Start Up Method for Switching Converters using the same Reference Voltage in the Error Amplifier and PWM Comparator |
-
2016
- 2016-10-31 CN CN201610929722.4A patent/CN106571779B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09116360A (en) * | 1995-10-20 | 1997-05-02 | Fujitsu Ltd | Automatic gain control amplifier |
| CN201766557U (en) * | 2010-06-12 | 2011-03-16 | 深圳市国人射频通信有限公司 | Radio frequency (RF) power amplitude limiting circuit |
| US20170070141A1 (en) * | 2015-09-04 | 2017-03-09 | Qualcomm Incorporated | Start Up Method for Switching Converters using the same Reference Voltage in the Error Amplifier and PWM Comparator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113381701A (en) * | 2021-06-30 | 2021-09-10 | 上海航天测控通信研究所 | Microwave solid-state power amplifier |
| CN113644632A (en) * | 2021-07-01 | 2021-11-12 | 南京理工大学 | High-power automatic protection circuit based on MEMS series switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106571779B (en) | 2019-11-01 |
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