CN205945658U - High -efficient orderly harmonic mating structure in broadband - Google Patents
High -efficient orderly harmonic mating structure in broadband Download PDFInfo
- Publication number
- CN205945658U CN205945658U CN201620795003.3U CN201620795003U CN205945658U CN 205945658 U CN205945658 U CN 205945658U CN 201620795003 U CN201620795003 U CN 201620795003U CN 205945658 U CN205945658 U CN 205945658U
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- Prior art keywords
- harmonic
- microstrip line
- mating structure
- match
- circuit
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Abstract
The utility model provides a high -efficient orderly harmonic mating structure in broadband, a high -efficient orderly harmonic mating structure in broadband, including harmonic control circuit and fundamental wave matching circuit, power amplifier's output signal warp harmonic control circuit and fundamental wave matching circuit loading to load end, the harmonic control circuit includes a N cross mating structure, and every cross mating structure forms 4 microstrip lines of lambda and orderly serial link, until N cross mating structure's output with fundamental wave matching circuit's input is connected, fundamental wave matching circuit's output is connected with the load end. Compared with the prior art, the utility model provides a high -efficient orderly harmonic mating structure in broadband will have now to expand to with central frequency's harmonic control structure and control different frequency point harmonic, keeping expanding the bandwidth under the efficient circumstances of power amplifier, greatly promote the whole bandwidth of amplifier.
Description
Technical field
This utility model is related to radio-frequency communication technical field, the orderly harmonic match knot of more particularly, to a kind of high efficiency and broad band
Structure.
Background technology
In recent years, wireless communication technology has obtained very big development, and modulation system is also increasingly sophisticated.Power amplifier, makees
For the final block in transmitter, it is the maximum part of power consumption in whole radio system, its Main Function is that prime is exported
Signal carry out power amplification, then the signal after amplifying is given antenna and is launched.Because power amplifier can consume very
Big dc power, the band resource of communication device works is very in short supply simultaneously, and therefore efficiency and bandwidth are Designing power amplifier
When first have to the important indicator that considers, but the efficiency power amplifier of prior art is high but frequency band is very narrow, bandwidth efficiency is again
Very low.
The power amplifier of prior art can be divided into class a audio power amplifier (also known as A class), Class B power amplifier (also known as B class), class AB
Power amplifier (also known as AB class), C class power amplifier and F class power amplifier.Hyperpyrexia can be produced, efficiency is very low, but intrinsic during class A amplifier work
Advantage is that there is not intermodulation distortion.Single-ended amplifier is all Class A working method, push-pull amplifier can be Class A or
Class B or class AB.The advantage of Class B amplifier is efficiency high, and shortcoming is to produce intermodulation distortion.Class AB amplifies effectively solving
The intermodulation distortion problem of Class B amplifier, efficiency is again high than class A amplifier, but cannot widen bandwidth.F class theoretical efficiency
100%, however it is necessary that controlling the very difficult bandwidth of all of higher hamonic wave again very narrow, how therefore cannot be used widely
Ensureing that the efficient bandwidth of simultaneously widening further of F power-like amplifier is a problem demanding prompt solution.
Simply Optimum Matching is carried out to mid frequency during prior art F power-like amplifier coupling, namely be generally only
Single-frequency point coupling is carried out on Smith's artwork, is then adjusting whole match circuit to reach the effect of efficient broadband, this tune
Section process does not have theory support, typically rule of thumb adjusts, and then emulates or actual measurement is verified, design difficulty is than larger.
And according to classical transmission line theory, when operating frequency offset mid frequency, corresponding output impedance also can offset
The figure of merit, causes the decay of amplifier performance, and this will produce strong influence to the efficiency of power amplifier, thus this area
Those of ordinary skill has been generally acknowledged that prior art EF power-like amplifier discomfort is fit to do broadband, and can only carry out arrowband design.
Therefore, for drawbacks described above present in currently available technology, it is necessary in fact to be studied, to provide a kind of scheme,
Solve defect present in prior art.
Utility model content
In view of this, the purpose of this utility model is the harmonic match structure providing a kind of high efficiency and broad band orderly, passes through
Using orderly cross mating structure, the harmonic wave at different frequency (f0, f1, f2...fn) place is controlled, thus keeping high
The bandwidth of power amplifier can be widened by the higher hamonic wave mated at different center frequency, to solve above-mentioned asking while efficiency
Topic.
In order to overcome the defect of prior art, this utility model employs the following technical solutions：
A kind of orderly harmonic match structure of high efficiency and broad band, including harmonic controling circuit and fundamental wave match circuit, power is put
The output signal of big device is loaded into load end through described harmonic controling circuit and fundamental wave match circuit, described harmonic controling circuit bag
Include N number of cross mating structure, each cross mating structure forms λ/4 microstrip line and ordered serial connects, wherein, the 10th
The input of font mating structure is connected with the outfan of power amplifier, the outfan of described first cross mating structure
It is connected with the input of the second cross mating structure, the outfan of the second cross mating structure is mated with the 3rd cross
The input of structure, ordered serial connection successively, until the outfan of N cross mating structure and described fundamental wave match circuit
Input be connected, the outfan of described fundamental wave match circuit is connected with load end；
Any one cross mating structure is used for the harmonic controling of coupling Frequency point corresponding thereto, including N1 micro-strip
Line TLN1, N2 microstrip line TLN2 and N3 microstrip line TLN3, wherein, N is any natural number being more than 0, described N1 micro-strip
Line TLN1 is used for second harmonic and controls, and described N2 microstrip line TLN2 is used for triple-frequency harmonics and controls, described N3 microstrip line TLN3
Tune between for level；One end of described N1 microstrip line TLN1 and the one of described N2 microstrip line TLN2 and N3 microstrip line TLN3
End is connected, the other end of described N1 microstrip line TLN1 and ground terminal short circuit, the other end open circuit of described N2 microstrip line TLN2,
In any one cross mating structure, the electrical length relation of each microstrip line is：EN1+EN3=λ/8, EN2+EN3=λ/12, are adjusted
N1 microstrip line TLN1, the resistance value of N2 microstrip line TLN2 and N3 microstrip line TLN3 make it match reactance line, thus real
The harmonic match of existing different frequency point；
Described fundamental wave match circuit adopts step micro-strip mating structure.
Preferably, described N1 microstrip line TLN1 and N2 microstrip line TLN2 is with regard to fundamental wave match circuit plane symmetry.
Preferably, described harmonic controling circuit adds the cross of multiple different frequency points according to actual signal frequency bandwidth
Mating structure.
Preferably, the number of cross mating structure is between 3 to 10.
Preferably, described power amplifier adopts transistor to realize.
Preferably, described load impedance is 50 Europe.
With respect to prior art, the orderly harmonic match structure of high efficiency and broad band that this utility model provides, by existing with
The harmonic controling structural extended of frequency of heart is that different frequency point harmonic wave is controlled, and can apply to various power amplifiers；
This utility model, in the case of keeping efficient, mates to suppress secondary and triple-frequency harmonics to provide for power amplifier using multiple-stage harmonic
Sufficiently high efficiency and broadband；There are orderly matching properties simultaneously, make harmonic match become to be more prone to.
Brief description
Fig. 1 is the block diagram of the orderly harmonic match structure of this utility model high efficiency and broad band.
Fig. 2 is the optimum impedance line that on Smith chart, Theoretical Calculation draws.
Fig. 3 is the topology diagram of fundamental wave mating structure in the orderly harmonic match structure of this utility model high efficiency and broad band.
Fig. 4 is the measured result figure of this utility model embodiment.
Specific embodiment
The following is specific embodiment of the utility model and combine accompanying drawing, the technical solution of the utility model is made further
Description, but this utility model is not limited to these embodiments.
With the continuous progress of power amplifier techniques, its efficiency and bandwidth also improve constantly and widen, and such as, F class is prolonged
Continuous continuous F class out, is more and more favored.When being controlled to harmonic wave, those of ordinary skill in the art
When it is improved, also attempt to using the thought of continuous F class, existing single-frequency point harmonic controling structure be improved, but continuously
F class thought structure needs to be calculated by fitting algorithm, and process is especially complex, makes efficiency and bandwidth be unable to reach preferable effect
Really.
The defect existing for prior art, applicant has carried out deep grinding to harmonic match structure in prior art
Study carefully, it is found by the applicant that existing harmonic controling structure is all by the harmonic controling of single-frequency point, do not consider that multifrequency point controls right
Efficiency and the impact of bandwidth, thus cause prior art power amplifier can only carry out arrowband design.
Meanwhile, prior art when to harmonic controling it is intended to suppress all higher hamonic waves, thus leading to harmonic controling circuit
Complexity, each harmonic controls the regulation parameter in practice that influences each other extremely difficult.Applicant finds in an experiment, second harmonic
Larger on the efficiency impact of power amplifier with triple-frequency harmonics, and the harmonic controling of more high order (more than three times) is to whole circuit
Performance impact is less thus also can increase the complexity of circuit.During continuous experimental test, it has been found that will be single
The carrying out that the harmonic controling network of frequency is orderly controls the effect that just can reach broadening bandwidth one by one, and fundamental wave coupling adopts rank simultaneously
Jump micro-strip coupling can reduce the complexity of match circuit.
Referring to Fig. 1, it show the block diagram of the orderly harmonic match structure of this utility model high efficiency and broad band, including harmonic controling
Circuit and fundamental wave match circuit, the output signal of power amplifier is loaded into load through harmonic controling circuit and fundamental wave match circuit
End, harmonic controling circuit includes N number of cross mating structure, and each cross mating structure forms λ/4 microstrip line and goes here and there in order
Row connects, and wherein, the input of the first cross mating structure is connected with the outfan of power amplifier, the first cross
The outfan of distribution structure is connected with the input of the second cross mating structure, the outfan of the second cross mating structure with
The input of the 3rd cross mating structure, ordered serial connection successively, until the outfan of N cross mating structure and base
The input of ripple match circuit is connected, and the outfan of fundamental wave match circuit is connected with load end.
Theoretical according to λ/4 microstrip line, only need to the second harmonic coupling at all frequencies that will need in frequency range in theory
To short circuit, triple-frequency harmonics matches open circuit that drain voltage electric current can be made will not to occur simultaneously, so that the efficiency that drain electrode consumes
It is changed into 0, thus increasing the efficiency of whole power amplifier.Therefore, any one cross mating structure is used for coupling corresponding thereto
The harmonic controling of the Frequency point answered, further includes N1 microstrip line TLN1, N2 microstrip line TLN2 and N3 microstrip line TLN3,
Wherein, N is any natural number being more than 0, and N1 microstrip line TLN1 is used for second harmonic and controls, and N2 microstrip line TLN2 is used for three
Subharmonic control, N3 microstrip line TLN3 as tuning microstrip line, for level between tune, have tuning upper level mating structure with
Impact between next stage mating structure, gives full play to the effects itself higher hamonic wave being controlled at different levels；N1 microstrip line TLN1
One end be connected with one end of N2 microstrip line TLN2 and N3 microstrip line TLN3, the other end of N1 microstrip line TLN1 with ground
End short circuit, the other end open circuit of N2 microstrip line TLN2, the electrical length relation of each microstrip line in any one cross mating structure
For：EN1+EN3=λ/8, EN2+EN3=λ/12.
The principle of above-mentioned harmonic controling mating structure is, using quarter-wave impedance shift theory, more than to have narration,
Here the principle being substantially carried out harmonic match order explains：Electrical length E11+E13 of (f1) microstrip line at first frequency
=λ/8, E12+E13=λ/12, E11 is the electrical length controlling second harmonic microstrip line, and E12 is to control triple-frequency harmonics microstrip line
Electrical length, E, 13 is the tuning microstrip line connecting subordinate's harmonic match, and so effect through tuning microstrip line can make difference
Secondary and triple-frequency harmonics at frequency is controlled better, and so as to ensure the effect of high efficiency and broadband simultaneously, institute is following
Harmonic controling structure at one frequency is also required to meet and controls the micro-strip of second harmonic and the micro-strip of triple-frequency harmonics and next cascade
The tuning micro-strip connecing needs to be combined into λ/8, λ/12 such that it is able to meet quarter-wave impedance transformation theory simultaneously, enters one
Step is expanded as carrying out harmonic controling at the multiple frequency of frequency band selection as needed, has reached the purpose of high efficiency and broad band.
In actual mechanical process, for further broadband, through substantial amounts of practical proof it is only necessary to will be secondary humorous
Ripple and triple-frequency harmonics match reactance line, and reactance line is optimum impedance curve on Smith chart, referring specifically to Fig. 2 institute
Show, optimum impedance curve can be obtained by Theoretical Calculation.
Further, by adjusting the impedance of N1 microstrip line TLN1, N2 microstrip line TLN2 and N3 microstrip line TLN3
Value makes it match reactance line, thus realizing the harmonic match of different frequency point, thus further broadband.
This utility model adopts multifrequency point matching way, due to by multistage cross mating structure, to a certain extent,
Increase the complexity of match circuit.The applicant fully takes into account this point, first, abandons mating the technology of all higher hamonic waves
Scheme, only carries out the control of second harmonic and triple-frequency harmonics, thus substantially reducing the complexity of harmonic controling；Secondly, allow harmonic wave
Network follow regularity, has orderly matching properties, makes coupling become to be more prone to；To employ step micro- for fundamental wave match circuit simultaneously
Band fundamental wave match circuit, thus decreasing the impact because adding the harmonic controling circuit of different frequent points that whole circuit is brought, because
And dramatically reduce circuit complexity.Shown in Figure 3, the theory diagram of this utility model fundamental wave match circuit, rank
Jump decline band coupling be microstrip line a section be in series, do not have any parallel connection minor matters, further compensated for harmonic controling structure
Impact to whole circuit band.
This utility model also proposed a kind of orderly Harmonic Control Method of high efficiency and broad band, comprises the following steps：
Step 1：The power amplifier of one standard of debugging；
Step 2：According to actual signal bandwidth demand, choose N number of suitable Frequency point；Generally choose multiple frequencies at equal intervals
Point；
Step 3：Load harmonic match structure in the outfan of described power amplifier, described harmonic match structure is at least wrapped
Include N number of cross mating structure ordered serial to connect, make each cross mating structure form λ/4 microstrip line, for by its
Second harmonic and triple-frequency harmonics suppression at corresponding Frequency point；
Step 4：Adjusting the parameter of each cross mating structure makes it match reactance line thus matching reactance line, from
And realize the harmonic match of different frequency point.
Referring to Fig. 4, it show the measured result figure carrying out harmonic controling power amplifier using this utility model, square
It is expressed as measured result during N=1, circle is expressed as measured result during N=2, triangle table is shown as actual measurement effect during N=3
Really, from fig. 4, it can be seen that by adding harmonic controling mating structure at different frequency, harmonic wave control is carried out using this utility model
The efficiency of the power amplifier of system is significantly improved.
The explanation of above example is only intended to help understand method of the present utility model and its core concept.Should refer to
Go out, for those skilled in the art, on the premise of without departing from this utility model principle, can also be to this
Utility model carries out some improvement and modifies, and these improve and modification also falls into this utility model scope of the claims
Interior.Multiple modifications to these embodiments are it will be apparent that being determined in the application for those skilled in the art
The General Principle of justice can be realized in the case of without departing from spirit or scope of the present utility model in other embodiments.Cause
This, this utility model is not intended to be limited to these embodiments shown in the application, and be to fit to disclosed in the present application
Principle and the consistent scope the widest of features of novelty.
Claims (6)
1. a kind of orderly harmonic match structure of high efficiency and broad band is it is characterised in that include harmonic controling circuit and fundamental wave coupling electricity
Road, the output signal of power amplifier is loaded into load end through described harmonic controling circuit and fundamental wave match circuit, described harmonic wave
Control circuit includes N number of cross mating structure, and each cross mating structure forms λ/4 microstrip line and ordered serial connects,
Wherein, the input of the first cross mating structure is connected with the outfan of power amplifier, described first cross coupling
The outfan of structure is connected with the input of the second cross mating structure, the outfan of the second cross mating structure and
The input of three cross mating structures, successively ordered serial connect, until N cross mating structure outfan with described
The input of fundamental wave match circuit is connected, and the outfan of described fundamental wave match circuit is connected with load end；
Any one cross mating structure is used for the harmonic controling of coupling Frequency point corresponding thereto, including N1 microstrip line
TLN1, N2 microstrip line TLN2 and N3 microstrip line TLN3, wherein, N is any natural number being more than 0, described N1 microstrip line
TLN1 is used for second harmonic and controls, and described N2 microstrip line TLN2 is used for triple-frequency harmonics and controls, and described N3 microstrip line TLN3 uses
Tune between level；One end of described N1 microstrip line TLN1 and one end of described N2 microstrip line TLN2 and N3 microstrip line TLN3
It is connected, the other end of described N1 microstrip line TLN1 and ground terminal short circuit, the other end open circuit of described N2 microstrip line TLN2, appoint
In one cross mating structure, the electrical length relation of each microstrip line is：EN1+EN3=λ/8, EN2+EN3=λ/12, adjust the
N1 microstrip line TLN1, the resistance value of N2 microstrip line TLN2 and N3 microstrip line TLN3 make it match reactance line, thus realizing
The harmonic match of different frequency point；
Described fundamental wave match circuit adopts step micro-strip mating structure.
2. according to claim 1 the orderly harmonic match structure of high efficiency and broad band it is characterised in that described N1 microstrip line
TLN1 and N2 microstrip line TLN2 is with regard to fundamental wave match circuit plane symmetry.
3. according to claim 1 the orderly harmonic match structure of high efficiency and broad band it is characterised in that described harmonic controling circuit
Add the cross mating structure of multiple different frequency points according to actual signal frequency bandwidth.
4. according to claim 3 high efficiency and broad band orderly harmonic match structure it is characterised in that cross mating structure
Number is between 3 to 10.
5. according to claim 1 the orderly harmonic match structure of high efficiency and broad band it is characterised in that described power amplifier is adopted
Realized with transistor.
6. according to claim 1 the orderly harmonic match structure of high efficiency and broad band it is characterised in that described load impedance be 50
Europe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620795003.3U CN205945658U (en) | 2016-07-27 | 2016-07-27 | High -efficient orderly harmonic mating structure in broadband |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620795003.3U CN205945658U (en) | 2016-07-27 | 2016-07-27 | High -efficient orderly harmonic mating structure in broadband |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205945658U true CN205945658U (en) | 2017-02-08 |
Family
ID=57926251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620795003.3U Expired - Fee Related CN205945658U (en) | 2016-07-27 | 2016-07-27 | High -efficient orderly harmonic mating structure in broadband |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106301254A (en) * | 2016-07-27 | 2017-01-04 | 杭州电子科技大学 | Harmonic match structure that a kind of high efficiency and broad band is orderly and Harmonic Control Method thereof |
| CN107911088A (en) * | 2017-10-26 | 2018-04-13 | 天津大学 | For match circuit between the double-frequency broadband power-amplifier stage of GaN power devices |
| CN108880501A (en) * | 2018-06-22 | 2018-11-23 | 杭州电子科技大学 | A kind of broadband out-phase power combiner |
| CN110048682A (en) * | 2019-04-17 | 2019-07-23 | 杭州电子科技大学富阳电子信息研究院有限公司 | A kind of broadband continuous type power amplifier and design method based on multiple stage secondary harmonic controling |
-
2016
- 2016-07-27 CN CN201620795003.3U patent/CN205945658U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106301254A (en) * | 2016-07-27 | 2017-01-04 | 杭州电子科技大学 | Harmonic match structure that a kind of high efficiency and broad band is orderly and Harmonic Control Method thereof |
| CN106301254B (en) * | 2016-07-27 | 2023-06-02 | 杭州电子科技大学 | Efficient wideband ordered harmonic matching structure and harmonic control method thereof |
| CN107911088A (en) * | 2017-10-26 | 2018-04-13 | 天津大学 | For match circuit between the double-frequency broadband power-amplifier stage of GaN power devices |
| CN108880501A (en) * | 2018-06-22 | 2018-11-23 | 杭州电子科技大学 | A kind of broadband out-phase power combiner |
| CN110048682A (en) * | 2019-04-17 | 2019-07-23 | 杭州电子科技大学富阳电子信息研究院有限公司 | A kind of broadband continuous type power amplifier and design method based on multiple stage secondary harmonic controling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170208 Termination date: 20170727 |