CN109379057A - A kind of New Active power combining methods - Google Patents
A kind of New Active power combining methods Download PDFInfo
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- CN109379057A CN109379057A CN201811101374.7A CN201811101374A CN109379057A CN 109379057 A CN109379057 A CN 109379057A CN 201811101374 A CN201811101374 A CN 201811101374A CN 109379057 A CN109379057 A CN 109379057A
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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
- H03H11/04—Frequency selective two-port networks
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Abstract
The invention discloses a kind of New Active power combining methods: the input signal that two-way to be synthesized being passed through common-source amplifier respectively and cathode-input amplifier amplifies, obtains four road signals；The amplified two paths of signals of common-source amplifier is merged, the amplified two paths of signals of cathode-input amplifier merges, and obtains two paths of differential signals；By active device or passive balun, two paths of differential signals is merged into all the way, impedance matching process is completed at the same time.The present invention realizes in broad frequency band, for the more serious input signal of amplitude and phase mismatch, high combined coefficient and high-output power equally may be implemented, and not by the constraint of working frequency and ghost effect, with good application prospect.
Description
Technical field
The present invention relates on piece power combing fields, and more specifically, it relates to a kind of New Active power combining methods.
Background technique
Improving millimeter wave solid-state circuit output power is always a challenge.Using power combining methods, that is, pass through combination
Several identical working cells, or the method by being superimposed multiple split circuit power, available bigger output power.
Power combing can be divided into active power synthesis according to built-up circuit element and Passive Power synthesizes.Wherein, Passive Power synthesizes
Including modes such as Wilkinson synthesis, transformer synthesis, since it lacks active device, gain can not be provided, therefore it is synthesized
Low efficiency, output power are small.In millimeter wave monolithic integrated circuit, active power synthesis is often due to it can provide larger gain
In occupation of status that can not be absent.
Currently, the difficult one side that the design of millimeter wave active power synthesis is faced is the requirement height to input signal,
The amplitude of each road input signal is needed to be consistent, phase difference is kept for 0 ° or 180 °.If the amplitude or phase misalignment of input signal
Match, then each signal can be made to offset a part of power because of mismatch in synthesis, then combined coefficient is caused to be lower, reduced
The output power of output signal, and as input signal amplitude or the mismatch of phase aggravate, the power of output signal can be cured
Come smaller, the original design intention of power combing is not achieved.On the other hand, since under millimeter wave frequency band, ghost effect is to circuit
Energy is affected, and circuit gain, combined coefficient and output power are often therefore limited.And in actual production, due to work
The limitation of skill, there are deviations for transistor and passive device size and ideal design at each branch same position, then each
Branch introduces additional amplitude and phase error, this just makes the further mismatch of amplitude and phase, causes combined coefficient low, influences
Output power after synthesis.
Therefore, how to reduce amplitude and phase mismatch, improve combined coefficient and output power, it has also become have on millimeter-wave chip
Critical issue in source power compounding design.
Summary of the invention
Purpose of the invention is to overcome the shortcomings in the prior art, provides a kind of New Active power combining methods,
It realizes in broad frequency band, for the more serious input signal of amplitude and phase mismatch, high combined coefficient equally may be implemented
And high-output power, and not by the constraint of working frequency and ghost effect, with good application prospect.
The purpose of the present invention is what is be achieved through the following technical solutions.
New Active power combining methods of the invention, comprising the following steps:
Step 1: the input signal that two-way to be synthesized is passed through common-source amplifier and cathode-input amplifier amplification respectively, obtain
Four road signals；
Step 2: the amplified two paths of signals of common-source amplifier is merged, the amplified two-way letter of cathode-input amplifier
It number merges, obtains two paths of differential signals；
Step 3: two paths of differential signals is merged into all the way, impedance is completed at the same time by active device or passive balun
With process.
There are error between the amplitude and phase for the four road signals that the first step obtains, this fractional error contains input signal
Amplitude and phase error, in second step merging process, amplitude and phase error before can be assigned to new after merging simultaneously
Two paths of differential signals in.
Compared with prior art, the beneficial effects brought by the technical solution of the present invention are as follows:
(1) two-way amplitude and phase can be differed biggish signal and closed by the present invention under the premise of guaranteeing combined coefficient
As signal all the way, requirement of the conventional power synthesis to input signal amplitude and phase is avoided.
(2) principle of the invention is not based on frequency, stands good to power combing under high band, avoids parasitic under high band
The problems such as combined coefficient that effect may result in is lower.
(3) topological structure of the present invention is simple, convenient for integrated.
Detailed description of the invention
Fig. 1 is New Active power combining methods schematic diagram of the present invention.
Specific embodiment
Illustrate technical solution of the present invention in order to clearer, 1 the invention will be further described with reference to the accompanying drawing.
New Active power combining methods of the invention, comprising the following steps:
Step 1: the input signal that two-way to be synthesized is divided into four road signals.In this step, based on common-source amplifier
Output signal and input signal reverse-phase, and the characteristic of the output signal of cathode-input amplifier and input signal phase, can
The input signal that two-way to be synthesized is amplified through common-source amplifier and cathode-input amplifier respectively, then obtains four road signals.Four tunnels
There are error between the amplitude and phase of signal, this fractional error contains the amplitude and phase error of input signal and at this
The error that grade amplifying circuit is introduced due to process deviation etc..
Step 2: the amplified two paths of signals of common-source amplifier is merged, the amplified two-way letter of cathode-input amplifier
It number merges.In merging process, amplitude and phase error before can be assigned to new two paths of signals after merging simultaneously.It is logical
Cross the amplitude and phase for comparing this two paths of signals after merging, it is possible to find, this two paths of signals is approximately differential signal.
Step 3: more easily two paths of differential signals can be merged into all the way, together by active device or passive balun
When complete impedance matching process, and improve isolation.
As shown in Figure 1, realizing the synthesis of two-way input signal.Assuming that there are biggish gains between two-way input signal
Error GAAnd phase error thetaA, therefore shown in two-way input signal expression formula such as formula (1), (2):
Iin1=sin ω t (1)
Iin2=(1+GA)sin(ωt+θA) (2)
Due to common-source amplifier output signal and input signal reverse-phase, and the output signal of cathode-input amplifier with it is defeated
Enter the same phase of signal phase.Therefore, theoretically with input signal all the way respectively after common-source amplifier and cathode-input amplifier amplification, phase
Position can be in reversed nature, but due to the deviation of actual process, inevitably result in certain phase error, be denoted as θB.And by
In common-source amplifier, grid amplifier gain is different together, and the two is denoted as G there are also certain range errorB.Therefore, input signal
Iin1And Iin2Respectively through common-source amplifier and the amplified signal expression of cathode-input amplifier such as formula (3), (4), (5), (6) institute
Show:
I1=-(1+GB)sin(ωt+ΔθB) (3)
I2=sin ω t (4)
I3=-(1+GA)(1+GB)sin(ωt+ΔθA+ΔθB) (5)
I4=(1+GA)sin(ωt+ΔθA) (6)
Later, I1With I3、I2With I4Output signal I after synthesizing two-by-twoout1And Iout2As shown in formula (7), (8)
It can be seen that output signal Iout1And Iout2It is approximate after the amplification of the circuit topological structure and recombining
It is considered as a pair of ideal differential signal, wherein the component that the two differs in amplitude and in phase respectively by inputting letter before
Number GAAnd θAIt is converted into GBAnd θB, and GBAnd θBComponent is the mistake as caused by the deviation of production technology, with input signal
Difference is compared to negligible.And the principle of the topological structure is unrelated with derivation process with working frequency, therefore will not be because of work
In millimeter-wave frequency, and the larger impact by ghost effect.It later, can be by differential signal I by Transformerout1With
Iout2Synthesis
Although function and the course of work of the invention are described above in conjunction with attached drawing, the invention is not limited to
Above-mentioned concrete function and the course of work, the above mentioned embodiment is only schematical, rather than restrictive, ability
The those of ordinary skill in domain under the inspiration of the present invention, is not departing from present inventive concept and scope of the claimed protection situation
Under, many forms can also be made, all of these belong to the protection of the present invention.
Claims (2)
1. a kind of New Active power combining methods, which comprises the following steps:
Step 1: the input signal that two-way to be synthesized is passed through common-source amplifier and cathode-input amplifier amplification respectively, four tunnels are obtained
Signal；
Step 2: the amplified two paths of signals of common-source amplifier is merged, the amplified two paths of signals of cathode-input amplifier into
Row merges, and obtains two paths of differential signals；
Step 3: two paths of differential signals is merged into all the way, impedance matching is completed at the same time by active device or passive balun
Journey.
2. New Active power combining methods according to claim 1, which is characterized in that the four road signals that the first step obtains
Amplitude and phase between there are error, this fractional error contains the amplitude and phase error of input signal, second step close
And in the process, amplitude and phase error before can be assigned to simultaneously in the two paths of differential signals after new merging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811101374.7A CN109379057A (en) | 2018-09-20 | 2018-09-20 | A kind of New Active power combining methods |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811101374.7A CN109379057A (en) | 2018-09-20 | 2018-09-20 | A kind of New Active power combining methods |
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| CN109379057A true CN109379057A (en) | 2019-02-22 |
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| CN201811101374.7A Pending CN109379057A (en) | 2018-09-20 | 2018-09-20 | A kind of New Active power combining methods |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101364789A (en) * | 2008-09-27 | 2009-02-11 | 电子科技大学 | MMIC balance type ultra-wideband frequency multiplier laser based on CS/CG active balun |
| US20130033321A1 (en) * | 2011-08-03 | 2013-02-07 | Jonas Lindstrand | High efficiency power amplifier |
| US20150236727A1 (en) * | 2014-02-17 | 2015-08-20 | Panasonic Corporation | Transmission apparatus and transmission method |
| CN106877828A (en) * | 2017-01-03 | 2017-06-20 | 复旦大学 | Transformer orthogonal synthesis power amplifier |
-
2018
- 2018-09-20 CN CN201811101374.7A patent/CN109379057A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101364789A (en) * | 2008-09-27 | 2009-02-11 | 电子科技大学 | MMIC balance type ultra-wideband frequency multiplier laser based on CS/CG active balun |
| US20130033321A1 (en) * | 2011-08-03 | 2013-02-07 | Jonas Lindstrand | High efficiency power amplifier |
| US20150236727A1 (en) * | 2014-02-17 | 2015-08-20 | Panasonic Corporation | Transmission apparatus and transmission method |
| CN106877828A (en) * | 2017-01-03 | 2017-06-20 | 复旦大学 | Transformer orthogonal synthesis power amplifier |
Non-Patent Citations (1)
| Title |
|---|
| MUHAMMAD FURQAN: "An E-band SiGe Power Amplifier with 28 dB Gain", 《PROCEEDINGS OF THE 10TH EUROPEAN MICROWAVE INTEGRATED CIRCUITS CONFERENCE》 * |
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Application publication date: 20190222 |