CN209358502U - A kind of circuit structure of the harmonics restraint improving amplifier and three rank sections of output - Google Patents
A kind of circuit structure of the harmonics restraint improving amplifier and three rank sections of output Download PDFInfo
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- CN209358502U CN209358502U CN201920355548.6U CN201920355548U CN209358502U CN 209358502 U CN209358502 U CN 209358502U CN 201920355548 U CN201920355548 U CN 201920355548U CN 209358502 U CN209358502 U CN 209358502U
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Abstract
The utility model discloses a kind of circuit structures of three rank sections of harmonics restraint for improving amplifier and output, including two balun circuits and two amplifiers, the three rank section of output of amplifier can be effectively improved using the circuit of difference modes, and the harmonics restraint of amplifier can be improved.Receiver final stage is placed it in, if receiver harmonic requirement is not the three rank section of output that can directly save the low-pass filter of final stage in very high situation, and final amplifier can be improved.
Description
Technical field
The utility model relates to a kind of circuit structures for receiver, and in particular to a kind of harmonic wave suppression for improving amplifier
The circuit engineering of three rank sections of system and output.
Background technique
Power amplifier abbreviation power amplifier, is commonly called as " sound amplifier ", is equipment most basic in sound system, its task is to handles
Ultra-weak electronic signal from signal source (being then from sound console in professional sound system) is amplified to be issued with drive the speaker
Sound.
The effect of power amplifier is exactly that the small signals amplification from source of sound or pre-amplifier is pushed speaker sound reproduction.It is a set of good
The effect of good sound system power amplifier is performed meritorious deeds never to be obliterated.Power amplifier is a maximum family in all kinds of sound appliances, and effect is main
It is to input source of sound equipment after relatively small-signal amplifies, generates sufficiently large electric current and be pushed to loudspeaker and carry out sound
It resets.Due to considering power, impedance, distortion, dynamic and different use scopes and controlling to adjust function, different power amplifiers exists
Signal processing, the route of inside design and produce also different in technique.
Currently, due to amplifier itself harmonics restraint be not it is very high, the harmonics restraint of receiver amplifies mainly by final stage
Low-pass filter after device guarantees that three rank sections of input mainly cut with three rank of output of entire link gain and final amplifier
Point is related, and when link gain is a little high, to guarantee to input three rank sections, final amplifier must select three ranks of output high
Amplifier, this brings very big limitation to the type selecting of final amplifier.
Summary of the invention
For overcome it is above-mentioned there are deficiency, the inventor of the utility model passes through long-term explorations trial and multiple reality
It tests and effort, keeps reforming and innovate, propose the circuit knot of a kind of harmonics restraint for improving amplifier and three rank sections of output
Structure technology compares existing receiver after this circuit, and the circuit of such structure can save the low pass for filtering out harmonics restraint
Filter, and the three rank section of output of final amplifier can be improved, so that the type selecting of final amplifier is more.
To achieve the goals above, the technical scheme adopted by the utility model is a kind of harmonic wave suppression for improving amplifier
The circuit structure of three rank sections of system and output, spy include that two balun circuits and two amplifiers, the two of the first balun circuit are defeated
Outlet is separately connected the input terminal of two amplifiers；The input terminal of second balun circuit is as output end, and two output ends are as defeated
Enter the output end of two amplifiers of end connection.
According to it is described in the utility model it is a kind of improve amplifier harmonics restraint and output three rank sections circuit structure,
Its further technical solution is: first balun circuit and the second balun circuit are using TCM1-43X+.
According to it is described in the utility model it is a kind of improve amplifier harmonics restraint and output three rank sections circuit structure,
Its further technical solution is: two amplifier is using ADL5535.
It is placed on receiver final stage when the utility model is used, if receiver harmonic requirement is not permissible in very high situation
The low-pass filter of final stage directly is saved, and the three rank section of output of final amplifier can be improved.
Compared with prior art, the circuit of the utility model is placed on receiver final stage, if receiver harmonic requirement is not very
The low-pass filter of final stage can be directly saved in the case where height, and the three rank section of output of final amplifier can be improved.
Such circuit using difference modes can effectively improve the three rank section of output of amplifier, and amplifier can be improved
Harmonics restraint has broad application prospects.
Detailed description of the invention
It, below will be to required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
The attached drawing used is briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore not
It should be considered as the restriction to range, for those of ordinary skill in the art, without creative efforts,
It can also be obtained according to these attached drawings other relevant attached drawings.
Fig. 1 is technical solutions of the utility model schematic diagram.
Specific embodiment
Technical solution is described in detail in conjunction with the accompanying drawings in the utility model embodiment, it is clear that described
Embodiment is a part of embodiment of the utility model, rather than whole embodiments.Based on the reality in the utility model
Mode is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts is all
Belong to the range of the utility model protection.Therefore, below the detailed description for providing embodiment in the accompanying drawings is not intended to limit
The range of claimed invention processed, but it is merely representative of the selected embodiment of the utility model.
This embodiment offers a kind of circuits of three rank sections of harmonics restraint for improving amplifier and output as shown in Figure 1:
Structure, it includes two balun circuits and two amplifiers, and two balun circuits are all the TCM1-43X+ used, and two amplifiers are all
It is the ADL5535 used.When specific connection, it regard one of them in two balun circuits as the first balun circuit, another
For the second balun circuit, the input terminal input signal of the first balun circuit, the two output ends input terminal with two amplifiers respectively
Connection.Two output ends of the second balun circuit are connect as input terminal with the input terminal of two amplifiers, the balun circuit
Input terminal is as output end output signal.
Its working principle is that the three rank section of output of amplifier can be effectively improved using the circuit of difference modes, and
The harmonics restraint that amplifier can be improved places it in receiver final stage, if receiver harmonic requirement is not very high situation
The low-pass filter of final stage can be directly saved down, and the three rank section of output of final amplifier can be improved.Therefore increase
Receiver after the circuit compares previously received machine, and the circuit of such structure can save the low-pass filtering for filtering out harmonics restraint
Device, and the three rank section of output of final amplifier can be improved.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be
Mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary
The interaction relationship of connection or two elements inside element.It for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
Above are merely preferred embodiments of the utility model, it is noted that above-mentioned preferred embodiment should not regard
For limitations of the present invention, the protection scope of the utility model should be defined by the scope defined by the claims..For
For those skilled in the art, without departing from the spirit and scope of the utility model, it can also make several
Improvements and modifications, these improvements and modifications also should be regarded as the protection scope of the utility model.
Claims (3)
1. a kind of circuit structure of three rank sections of harmonics restraint for improving amplifier and output, it is characterised in that: including two baluns
Circuit and two amplifiers, two output ends of the first balun circuit are separately connected the input terminal of two amplifiers；Second balun electricity
The input terminal on road connects the output end of two amplifiers as input terminal as output end, two output ends.
2. the circuit structure of a kind of harmonics restraint for improving amplifier and three rank sections of output according to claim 1,
It is characterized in that, first balun circuit and the second balun circuit are using TCM1-43X+.
3. the circuit structure of a kind of harmonics restraint for improving amplifier and three rank sections of output according to claim 1,
It is characterized in that, two amplifier is using ADL5535.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920355548.6U CN209358502U (en) | 2019-03-20 | 2019-03-20 | A kind of circuit structure of the harmonics restraint improving amplifier and three rank sections of output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920355548.6U CN209358502U (en) | 2019-03-20 | 2019-03-20 | A kind of circuit structure of the harmonics restraint improving amplifier and three rank sections of output |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209358502U true CN209358502U (en) | 2019-09-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201920355548.6U Active CN209358502U (en) | 2019-03-20 | 2019-03-20 | A kind of circuit structure of the harmonics restraint improving amplifier and three rank sections of output |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114285429A (en) * | 2021-12-28 | 2022-04-05 | 中国航天科工集团八五一一研究所 | Broadband receiving assembly with high second harmonic suppression |
-
2019
- 2019-03-20 CN CN201920355548.6U patent/CN209358502U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114285429A (en) * | 2021-12-28 | 2022-04-05 | 中国航天科工集团八五一一研究所 | Broadband receiving assembly with high second harmonic suppression |
| CN114285429B (en) * | 2021-12-28 | 2024-08-23 | 中国航天科工集团八五一一研究所 | Broadband receiving assembly with higher second harmonic suppression |
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