CN108599734A - Broadband active power splitter and broadband active power combiner - Google Patents
Broadband active power splitter and broadband active power combiner Download PDFInfo
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- CN108599734A CN108599734A CN201810442841.6A CN201810442841A CN108599734A CN 108599734 A CN108599734 A CN 108599734A CN 201810442841 A CN201810442841 A CN 201810442841A CN 108599734 A CN108599734 A CN 108599734A
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- 239000003990 capacitor Substances 0.000 claims description 28
- 230000005611 electricity Effects 0.000 claims description 6
- 229910052715 tantalum Inorganic materials 0.000 claims description 6
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 2
- 238000002955 isolation Methods 0.000 abstract description 20
- 238000003780 insertion Methods 0.000 abstract description 6
- 230000037431 insertion Effects 0.000 abstract description 6
- 238000005259 measurement Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 18
- 238000004088 simulation Methods 0.000 description 12
- 238000013461 design Methods 0.000 description 8
- 239000013078 crystal Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/32—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns
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Abstract
The invention discloses broadband active power splitter and broadband active power combiners.Include activated amplifier, capacitance, inductance and resistance in circuit.It is divided into two-way after input terminal one activated amplifier of access of broadband active power splitter and concatenates an activated amplifier respectively again, and broadband active power combiner synthesizes after two input terminals respectively one activated amplifier of access and concatenates an activated amplifier again all the way.The present invention overcomes traditional passive type power splitter and power combiners to influence the defect of measurement result broadband application especially high band Insertion Loss is larger and isolation is poor.
Description
Technical field
The invention belongs to radio-frequency devices technical fields, more particularly to broadband active power splitter and broadband active power combing
Device.
Background technology
Power splitter and power combiner are the key components of frequency microwave wireless telecommunications front end, in radio frequency testing field
It is widely used, is typically designed for that rf power signal will be divided into a few road power signals all the way or by a few way RF power signals
Synthesize power signal all the way.Research and development in relation to power splitter and power combiner has had the history of decades, Zeng Shizhong
One of the research hotspot of more frequency microwave engineers.But current power splitter and power combiner are typically all to be set using passive device
Meter, therefore loss of signal is relatively large, work bandwidth is also limited in a certain range.Such as tradition Wilkinson work(point
Device and power combiner are in the high-frequency band of several GHz or more, and output port coupling is serious, and isolation is poor, and 6dB resistor-type work(
Rate is distributed and synthesizer, loss of signal are serious.More and more power splitters are used in 4GHz or more with power combiner now
Frequency range has inevitable ghost effect and manufacturing tolerance in these high-frequency bands, and broadband Insertion Loss is larger, broadband isolation degree compared with
Difference, these all significantly limit application of the traditional passive type device in high band, especially in radio frequency testing fields of measurement
Related application, and improve Insertion Loss in high-frequency wideband application of passive power splitter and power combiner, isolation etc. performance
It is relatively difficult.
Invention content
In order to solve the technical issues of above-mentioned background technology proposes, the present invention is intended to provide broadband active power splitter and broadband
Active power synthesizer overcomes traditional passive type power splitter larger in broadband application especially high band Insertion Loss with power combiner
And isolation is poor and influences the defect of measurement result.
In order to achieve the above technical purposes, the technical scheme is that：
A kind of broadband active power splitter, including an inlet circuit and two output end branches；The inlet circuit
Including the first activated amplifier, the first capacitance, the first input and output build-out resistor, the second input and output build-out resistor,
One current-limiting resistance, the first radio frequency choke inductance and the first filter capacitor；One end of first capacitance is as broadband active work(point
The input terminal of device, the other end of the first capacitance connect the input terminal of the first activated amplifier, one end of the first current-limiting resistance
The first radio frequency choke inductance being concatenated is connected with the offset side of the first activated amplifier, the other end connection of the first current-limiting resistance
The anode of bias voltage, the anode of the anode connection bias voltage of the first filter capacitor, the cathode ground connection of the first filter capacitor, the
The input terminal of one activated amplifier is grounded through the first input and output build-out resistor, and the output end of the first activated amplifier is defeated through second
Enter to export build-out resistor ground connection, the output end of the first activated amplifier connects the input terminal of two output end branches；Two outputs
Hold the structure of branch identical, every output end branch include the second activated amplifier, the second capacitance, third capacitance,
Second radio frequency choke capacitance, the second current-limiting resistance, the second filter capacitor and third input and output build-out resistor；Second capacitance
Input terminal of the one end as output end branch, the other end of the second capacitance connects the input terminal of the second activated amplifier,
The second radio frequency choke inductance that one end of second current-limiting resistance is concatenated is connected with the offset side of the second activated amplifier, the second limit
The anode of the other end connection bias voltage of leakage resistance, the anode of the anode connection bias voltage of the second filter capacitor, the second filter
The cathode of wave capacitance is grounded, and the output end of the second activated amplifier is grounded through third input and output build-out resistor, third blocking electricity
One end of appearance connects the output end of the second activated amplifier, and the other end of third capacitance is as the defeated of broadband active power splitter
Outlet.
Preferred embodiment based on the above-mentioned technical proposal, the activated amplifier use broadband FET transistor.
Preferred embodiment based on the above-mentioned technical proposal, frequency of heart is attached at work using self-resonant frequency for the capacitance
Close capacitance.
Preferred embodiment based on the above-mentioned technical proposal, the filter capacitor is using several microfarads to the other tantalum electricity of tens microfarad ranges
Hold.
A kind of broadband active power combiner, including two input terminal branches and a circuit of output terminal；Two input terminals
The structure of branch is identical, and every input terminal branch includes the first activated amplifier, the first capacitance, the second capacitance, the
One radio frequency choke inductance, the first current-limiting resistance, the first filter capacitor and the first input and output build-out resistor；First capacitance
The other end of input terminal of the one end as broadband active power combiner, the first capacitance connects the defeated of the first activated amplifier
Entering end, the first radio frequency choke inductance that one end of the first current-limiting resistance is concatenated is connected with the offset side of the first activated amplifier,
The anode of the other end connection bias voltage of first current-limiting resistance, the anode of the anode connection bias voltage of the first filter capacitor,
The cathode of first filter capacitor is grounded, and the input terminal of the first activated amplifier is grounded through the first input and output build-out resistor, and second
One end of capacitance connects the output end of the first activated amplifier, the other end connection circuit of output terminal of the second capacitance
Input terminal；The circuit of output terminal includes the second activated amplifier, third capacitance, the second radio frequency choke inductance, the second limit
Leakage resistance, the second filter capacitor, the second input and output build-out resistor and third input and output build-out resistor；Second activated amplifier
Input terminal of the input terminal as circuit of output terminal, the second radio frequency choke inductance and that one end of the second current-limiting resistance is concatenated
The offset side of two activated amplifiers is connected, the anode of the other end connection bias voltage of the second current-limiting resistance, the second filter capacitor
Anode connection bias voltage anode, the second filter capacitor cathode ground connection, the input terminal of the second activated amplifier is through second
Input and output build-out resistor is grounded, and the output end of the second activated amplifier is grounded through third input and output build-out resistor, third every
One end of straight capacitance connects the output end of the second activated amplifier, and the other end of third capacitance is closed as broadband active power
The output end grown up to be a useful person.
Preferred embodiment based on the above-mentioned technical proposal, the activated amplifier use broadband FET transistor.
Preferred embodiment based on the above-mentioned technical proposal, frequency of heart is attached at work using self-resonant frequency for the capacitance
Close capacitance.
Preferred embodiment based on the above-mentioned technical proposal, the filter capacitor is using several microfarads to the other tantalum electricity of tens microfarad ranges
Hold.
The advantageous effect brought using above-mentioned technical proposal：
The broadband active power splitter and power combiner that the present invention designs use active device, can realize power amplification
With distribution, low-loss, preferable isolation.Show this broadband active power splitter and power combiner work frequency by circuit simulation
Band 200MHz-7GHz, has wider bandwidth of operation and higher working frequency.The activated distributor and power that the present invention designs
Synthesizer can be applied to that feeder line is longer to be caused during Insertion Loss is larger, working frequency is higher and the radio frequency test device in broadband, such as
Stray radiation test equipment.
Description of the drawings
Fig. 1 is broadband active power divider circuit figure of the present invention；
Fig. 2 is power splitter gain parameter simulation result schematic diagram of the present invention；
Fig. 3 is power splitter input and output return loss simulation result schematic diagram of the present invention；
Fig. 4 is that power splitter of the present invention exports isolation simulation result schematic diagram；
Fig. 5 is power splitter output power simulation result schematic diagram of the present invention；
Fig. 6 is broadband active power combiner figure of the present invention；
Fig. 7 is power combiner gain parameter simulation result schematic diagram of the present invention；
Fig. 8 is power combiner input and output return loss simulation result schematic diagram of the present invention；
Fig. 9 is that power combiner of the present invention inputs isolation simulation result schematic diagram；
Figure 10 is power combiner output power simulation result schematic diagram of the present invention.
Specific implementation mode
Below with reference to attached drawing, technical scheme of the present invention is described in detail.
Fig. 1 is the circuit diagram of broadband active power splitter of the present invention, and the broadband active power splitter that the present invention designs is band
The output constant power power splitter for having gain, is mainly made of transistor amplifier circuit and build-out resistor, includes transistor in circuit
Amplifier, capacitance, inductance, resistance.It is divided into two-way after input terminal one amplifier of access and concatenates an amplifier respectively again, puts
Got up by capacitance connection between big circuit.Amplifier is using the wider broadband FET transistor of working frequency.VCC is crystal
Pipe bias voltage, R5, R6, R7 are transistor biasing end current-limiting resistances, and different VCC voltages and current-limiting resistance correspond to different inclined
It sets, the suitable biasing of reference chip manual data selection sets suitable VCC voltages and current-limiting resistance.L1, L2, L3 are radio frequencies
Choke induction, isolated DC power supply and radiofrequency signal make radiofrequency signal not flow to DC power supply terminal, reduce radiofrequency signal damage
Consumption selects the inductance value that reactance is larger under working frequency, generally near self-resonant frequency, and can bear the maximum electricity of offset side
Stream.C6, C7, C8 are bias supply filter capacitors, generally use several uF to tens uF ranks tantalum capacitance, according to supply voltage come
Determine size, the more big corresponding tantalum capacitance size of supply voltage just uses bigger value, and pressure resistance is greater than supply voltage.C1、
C2, C3, C4, C5 are capacitances, and isolated DC only allows radiofrequency signal to pass through, and generally within several pF to hundreds of pF, are used
The capacitance self-resonant frequency capacitance near frequency of heart at work, because of the capacitive reactance very little near self-resonant frequency, radiofrequency signal
It is lost small, frequency is higher, and self-resonant frequency is lower, therefore the capacitance chosen is also lower, can be according to work frequency if conditions permit
Band uses corresponding broadband capacitance.R1, R2, R3, R4 are input and output build-out resistors, and size selection and the input and output of transistor hinder
It is anti-related, gain, input-output power ratio and the isolation of system are influenced, if input-output power requires consistent, R3 and R4
Size should be consistent, and be emulated according to design requirement to select suitable specific resistance value.
According to power splitter working band, maximum operating frequency, gain, isolation design requirement, selection first is suitable
Crystal amplifier, then based on high-frequency circuit Softwares of System Simulation to choke induction, build-out resistor and every the size for being worth capacitance
It optimizes, finally determines the value of each element.Later stage circuit layout, which is drawn, keeps radio frequency to take the air line as possible few bending, amplifier
Adequately grounded, link width and length between each section need to obtain ground terminal by simulation optimization, if applied in 2GHz
The above high frequency, plank should select high frequency plank low-loss plank such as Rogers4350B, input/output terminal to use SMA terminals
Connection.
Fig. 2 is that power splitter gain emulates schematic diagram with frequency variation curve, is emulated in 200MHz to 8GHz frequency ranges, can
With find out two-way output power with frequency change it is almost the same, in this wider frequency band gain keep more stable shape
State, difference is within 1.4dB, i.e., gain flatness is fine.
Fig. 3 is that power splitter input and output return loss emulates schematic diagram with frequency variation curve, in 200MHz to 7GHz
Return loss is respectively less than 10dB, therefore working band is from 200MHz to 7GHz.
Fig. 4 is that power splitter output isolation emulates schematic diagram with frequency variation curve, it can be seen that isolation is in work frequency
Band is interior to be respectively less than -14dB, has preferable isolation, and very flat.
Fig. 5 is the power with frequency change curve emulation schematic diagram that power splitter can export, it can be seen that output end power
Up to 17dBm, this will select suitable crystal amplifier to realize according to design requirement.
Fig. 6 is the circuit diagram of broadband active power combiner of the present invention, is a difference in that and is with activated distributor
Respectively synthesis concatenates an amplifier to one amplifier of access to two input terminals again all the way later.Unlike passive power splitter reversely uses
It is power combiner, activated distributor cannot correctly work due to the use of active transistor, reversed use, i.e., reversed to use
It cannot act as power combiner.The other component parts of active power synthesizer are similar with activated distributor, components choose with
Optimization method and circuit layout method are also similar with activated distributor, just repeat no more here.
Fig. 7 is that power combiner gain emulates schematic diagram with frequency variation curve, is imitated in 200MHz to 8GHz frequency ranges
Very, it can be seen that two-way gain is almost the same, in this wider frequency band gain keep more stable state, difference to exist
Within 2dB, i.e., gain flatness is preferable.
Fig. 8 is that power combiner input and output return loss emulates schematic diagram with frequency variation curve, is arrived in 200MHz
Return loss is respectively less than 10dB in 7GHz, therefore working band is from 200MHz to 7GHz.
Fig. 9 is that power combiner input isolation emulates schematic diagram with frequency variation curve, it can be seen that isolation is in work
Make to be respectively less than -14dB in frequency band, there is preferable isolation.
Figure 10 is the power with frequency change curve emulation schematic diagram that power combiner can export, it can be seen that output end
For power up to 18dBm, this will select suitable crystal amplifier to realize according to design requirement.
In conclusion by circuit simulation it is found that the present invention design activated distributor 2GHz when output gain about 7.7dB it is left
The right side, gain flatness is preferable in frequency band ,≤1.5dB, and what output gain can compensate for that longer feeder line and branch etc. bring inserts
Enter loss；Return loss is respectively less than -10dB in frequency range, exports branch isolation ＜ -14dB, ensure that two output branches
Isolation, and it is very flat in entire working frequency range；Single branch output power is up to 17.5dBm when 2GHz.And power combing
Output gain about 8.5dB or so when device 2GHz, gain flatness is preferable in frequency band, and≤2dB, output gain can compensate for longer
The insertion loss that feeder line and branch etc. are brought；Return loss is respectively less than -10dB in frequency range, inputs isolation ＜ -14dB, protects
The isolation of two input ports is demonstrate,proved, and very steady in entire working frequency range；Output power is up to 18dBm when 2GHz.
Embodiment is merely illustrative of the invention's technical idea, and cannot limit protection scope of the present invention with this, it is every according to
Technological thought proposed by the present invention, any change done on the basis of technical solution, each falls within the scope of the present invention.
Claims (8)
1. a kind of broadband active power splitter, it is characterised in that：Including an inlet circuit and two output end branches；It is described defeated
Input circuit includes the first activated amplifier, the first capacitance, the first input and output build-out resistor, the second input and output matching
Resistance, the first current-limiting resistance, the first radio frequency choke inductance and the first filter capacitor；One end of first capacitance has as broadband
The input terminal of source power splitter, the other end of the first capacitance connect the input terminal of the first activated amplifier, the first current-limiting resistance
The first radio frequency choke inductance for being concatenated of one end be connected with the offset side of the first activated amplifier, the first current-limiting resistance it is another
The anode of end connection bias voltage, the anode of the anode connection bias voltage of the first filter capacitor, the cathode of the first filter capacitor
Ground connection, the input terminal of the first activated amplifier are grounded through the first input and output build-out resistor, the output end of the first activated amplifier
It is grounded through the second input and output build-out resistor, the output end of the first activated amplifier connects the input terminal of two output end branches；
The structure of two output end branches is identical, every output end branch include the second activated amplifier, the second capacitance, third every
Straight capacitance, the second radio frequency choke capacitance, the second current-limiting resistance, the second filter capacitor and third input and output build-out resistor；Second
The other end of input terminal of the one end of capacitance as output end branch, the second capacitance connects the second activated amplifier
Input terminal, the offset side phase for the second radio frequency choke inductance and the second activated amplifier that one end of the second current-limiting resistance is concatenated
Even, the anode of the other end connection bias voltage of the second current-limiting resistance, the anode connection bias voltage of the second filter capacitor is just
Pole, the cathode ground connection of the second filter capacitor, the output end of the second activated amplifier are grounded through third input and output build-out resistor, the
One end of three capacitances connects the output end of the second activated amplifier, and the other end of third capacitance is as broadband active work(
Divide the output end of device.
2. broadband active power splitter according to claim 1, it is characterised in that：The activated amplifier is brilliant using broadband FET
Body pipe.
3. broadband active power splitter according to claim 1, it is characterised in that：The capacitance is existed using self-resonant frequency
Capacitance near operating center frequency.
4. broadband active power splitter according to claim 1, it is characterised in that：The filter capacitor is using several microfarads to tens
The other tantalum capacitance of microfarad range.
5. a kind of broadband active power combiner, it is characterised in that：Including two input terminal branches and a circuit of output terminal；Two
The structure of input terminal branch is identical, and every input terminal branch includes the first activated amplifier, the first capacitance, the second blocking
Capacitance, the first radio frequency choke inductance, the first current-limiting resistance, the first filter capacitor and the first input and output build-out resistor；First every
Input terminal of the one end of straight capacitance as broadband active power combiner, the other end connection first of the first capacitance is active to put
The input terminal of big device, the biasing for the first radio frequency choke inductance and the first activated amplifier that one end of the first current-limiting resistance is concatenated
End is connected, the anode of the other end connection bias voltage of the first current-limiting resistance, the anode connection bias voltage of the first filter capacitor
Anode, the cathode ground connection of the first filter capacitor, the input terminal of the first activated amplifier connects through the first input and output build-out resistor
Ground, one end of the second capacitance connect the output end of the first activated amplifier, the other end connection output of the second capacitance
The input terminal of terminal circuit；The circuit of output terminal includes the second activated amplifier, third capacitance, the second radio frequency choke electricity
Sense, the second current-limiting resistance, the second filter capacitor, the second input and output build-out resistor and third input and output build-out resistor；Second
Input terminal of the input terminal of activated amplifier as circuit of output terminal, the second radio frequency that one end of the second current-limiting resistance is concatenated are gripped
Galvanic electricity sense is connected with the offset side of the second activated amplifier, the anode of the other end connection bias voltage of the second current-limiting resistance, the
Two filter capacitors anode connection bias voltage anode, the second filter capacitor cathode ground connection, the second activated amplifier it is defeated
Enter end to be grounded through the second input and output build-out resistor, the output end of the second activated amplifier connects through third input and output build-out resistor
Ground, one end of third capacitance connect the output end of the second activated amplifier, and the other end of third capacitance is as broadband
The output end of active power synthesizer.
6. broadband active power combiner according to claim 5, it is characterised in that：The activated amplifier uses broadband
FET transistor.
7. broadband active power combiner according to claim 5, it is characterised in that：The capacitance is using self-resonance frequency
The rate capacitance near frequency of heart at work.
8. broadband active power combiner according to claim 5, it is characterised in that：The filter capacitor uses several microfarads extremely
The other tantalum capacitance of tens microfarad ranges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810442841.6A CN108599734A (en) | 2018-05-10 | 2018-05-10 | Broadband active power splitter and broadband active power combiner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810442841.6A CN108599734A (en) | 2018-05-10 | 2018-05-10 | Broadband active power splitter and broadband active power combiner |
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| Publication Number | Publication Date |
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| CN108599734A true CN108599734A (en) | 2018-09-28 |
Family
ID=63636980
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810442841.6A Pending CN108599734A (en) | 2018-05-10 | 2018-05-10 | Broadband active power splitter and broadband active power combiner |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2588511A (en) * | 2019-09-24 | 2021-04-28 | Univ Tianjin | Programmable amplitude and phase adjustable power distribution unit and adjustable power distribution network |
| GB2588510A (en) * | 2019-09-24 | 2021-04-28 | Univ Tianjin | Power distribution unit circuit and power distribution structure for integrated transceiver system |
| GB2589951A (en) * | 2019-09-24 | 2021-06-16 | Univ Tianjin | Error-controllable ultra-wideband compact active power divider |
| CN113437942A (en) * | 2021-07-27 | 2021-09-24 | 中国科学院微电子研究所 | Broadband power divider and broadband power amplifier |
| CN115275758A (en) * | 2022-09-19 | 2022-11-01 | 上海三菲半导体有限公司 | Broadband pulse modulation light source |
| CN118214373A (en) * | 2024-04-11 | 2024-06-18 | 优镓科技(苏州)有限公司 | High back-off efficiency power amplifier with active power divider |
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|---|---|---|---|---|
| US5072199A (en) * | 1990-08-02 | 1991-12-10 | The Boeing Company | Broadband N-way active power splitter |
| JP2005039799A (en) * | 2003-06-26 | 2005-02-10 | Matsushita Electric Ind Co Ltd | Power amplifier, power distributor, and power synthesizer |
| US20120270512A1 (en) * | 2009-07-29 | 2012-10-25 | Kyocera Corporation | Transfer Gate Circuit and Power Combining Circuit, Power Amplifying Circuit, Transmission Device, and Communication Device Using the Transfer Gate Circuit |
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2018
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| US5072199A (en) * | 1990-08-02 | 1991-12-10 | The Boeing Company | Broadband N-way active power splitter |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2588511A (en) * | 2019-09-24 | 2021-04-28 | Univ Tianjin | Programmable amplitude and phase adjustable power distribution unit and adjustable power distribution network |
| GB2588510A (en) * | 2019-09-24 | 2021-04-28 | Univ Tianjin | Power distribution unit circuit and power distribution structure for integrated transceiver system |
| GB2589951A (en) * | 2019-09-24 | 2021-06-16 | Univ Tianjin | Error-controllable ultra-wideband compact active power divider |
| GB2588510B (en) * | 2019-09-24 | 2021-10-20 | Univ Tianjin | Power distribution unit circuit and power distribution structure for integrated transceiver system |
| GB2588511B (en) * | 2019-09-24 | 2021-11-24 | Univ Tianjin | Programmable amplitude and phase adjustable power distribution unit and adjustable power distribution network |
| GB2589951B (en) * | 2019-09-24 | 2023-04-19 | Univ Tianjin | Error-controllable ultra-wideband compact active power divider |
| CN113437942A (en) * | 2021-07-27 | 2021-09-24 | 中国科学院微电子研究所 | Broadband power divider and broadband power amplifier |
| CN115275758A (en) * | 2022-09-19 | 2022-11-01 | 上海三菲半导体有限公司 | Broadband pulse modulation light source |
| CN118214373A (en) * | 2024-04-11 | 2024-06-18 | 优镓科技(苏州)有限公司 | High back-off efficiency power amplifier with active power divider |
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Application publication date: 20180928 |