CN204578485U - A kind of radio communication power amplifier apparatus - Google Patents
A kind of radio communication power amplifier apparatus Download PDFInfo
- Publication number
- CN204578485U CN204578485U CN201520354729.9U CN201520354729U CN204578485U CN 204578485 U CN204578485 U CN 204578485U CN 201520354729 U CN201520354729 U CN 201520354729U CN 204578485 U CN204578485 U CN 204578485U
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- CN
- China
- Prior art keywords
- power amplifier
- electric capacity
- driving stage
- amplifier
- inductance
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to electronic circuit technology field, the gain effect solving Wireless Telecom Equipment power amplification circuit in prior art is poor, the technical problem of gain flatness instability, by providing a kind of radio communication power amplifier apparatus, comprising: integrated amplifier, driving stage power amplifier and final power amplifier, by match circuit cascade between integrated amplifier and driving stage power amplifier, by orthocoupler cascade between described final power amplifier and described driving stage power amplifier, described match circuit at least comprises the first electric capacity, second electric capacity and the first inductance, first electric capacity and the second capacitances in series are connected between the amplifying circuit collector electrode of preamplifier and the amplifying circuit base stage of driving stage power amplifier, described first inductance one end connects described first electric capacity second electric capacity intermediate node, other end ground connection, and then achieve the technique effect of the gain flatness improving Wireless Telecom Equipment power amplification circuit.
Description
Technical field
The utility model relates to electronic circuit technology field, particularly relates to a kind of radio communication power amplifier apparatus.
Background technology
Along with the development of science and technology, the radio-frequency unit that radio communication adopts adopts passive frequency mixer, but the power output of passive frequency mixer is little, like this, if the signal adopting such frequency mixer to make to receive just has consumed more than half in communication process.
For such problem, usually adopt the modulation system of amplitude-modulated wave, after amplitude modulation, then through amplifying, easily producing nonlinear distortion, thus causing RF envelope to lose some information, make the information that receives incorrect.Therefore, often adopt frequency-hopping mode, in certain bandwidth, carry out saltus step with fixed carrier frequency, thus make to be with interior gain fluctuation necessary little, but, owing to being with interior gain flatness poor, make radio communication effect poor.
Therefore, in prior art, Wireless Telecom Equipment inband flatness is poor, causes the technical problem of communication efficiency difference.
Utility model content
The utility model is by providing a kind of radio communication power amplifier apparatus, the gain effect solving Wireless Telecom Equipment power amplification circuit in prior art is poor, the technical problem of gain flatness instability, and then the technique effect achieving the gain flatness improving Wireless Telecom Equipment power amplification circuit.
The technical scheme of the utility model embodiment is specially:
A kind of radio communication power amplifier apparatus, comprising: integrated amplifier, driving stage power amplifier and final power amplifier;
By match circuit cascade between integrated amplifier and driving stage power amplifier, by orthocoupler cascade between described final power amplifier and described driving stage power amplifier, described match circuit at least comprises the first electric capacity, the second electric capacity and the first inductance, first electric capacity and the second capacitances in series are connected between the amplifying circuit collector electrode of preamplifier and the amplifying circuit base stage of driving stage power amplifier, described first inductance one end connects described first electric capacity second electric capacity intermediate node, other end ground connection.
Further, the collector electrode of described integrated amplifier connects power supply by inductance.
The one or more technical schemes provided in the utility model embodiment, at least have following technique effect or advantage:
Owing to adopting third stage amplifier in this radio communication power amplifier apparatus, integrated amplifier, driving stage power amplifier and final power amplifier, match circuit cascade is adopted between integrated amplifier and driving stage power amplifier, this match circuit comprises two electric capacity and an inductance, orthocoupler cascade is adopted between driving stage power amplifier and final power amplifier, the gain effect solving Wireless Telecom Equipment power amplification circuit in prior art is poor, the technical problem of gain flatness instability, and then achieve the technique effect of the gain flatness improving Wireless Telecom Equipment power amplification circuit.
Accompanying drawing explanation
Fig. 1 is the structural representation of radio communication power amplifier apparatus in the utility model embodiment.
Embodiment
The utility model is by providing a kind of radio communication power amplifier apparatus, the gain effect solving Wireless Telecom Equipment power amplification circuit in prior art is poor, the technical problem of gain flatness instability, and then the technique effect achieving the gain flatness improving Wireless Telecom Equipment power amplification circuit.
In order to the gain effect solving Wireless Telecom Equipment power amplification circuit in above-mentioned prior art is poor, the technical problem of gain flatness instability, is described in detail technique scheme below in conjunction with Figure of description and concrete execution mode.
The utility model provides a kind of radio communication power amplifier apparatus, as shown in Figure 1, comprise: three stage power amplifiers, integrated amplifier 101, driving stage power amplifier 102 and final power amplifier 103, by match circuit cascade between integrated amplifier 101 and driving stage power amplifier 102, by orthocoupler cascade 105 between final power amplifier 103 and driving stage power amplifier 102.
Concrete, this match circuit comprises the first electric capacity 1041, second electric capacity 1042 and the first inductance 1043, this first electric capacity 1041 is connected with the second electric capacity 1042, and be connected between the amplifying circuit collector electrode of integrated amplifier 101 and the amplifying circuit base stage of driving stage power amplifier 102, one end of this first inductance is connected to the intersection point of the first electric capacity 1041 and the second electric capacity 1042, other end ground connection.By adopting match circuit cascade between integrated amplifier 101 and driving stage power amplifier 102, not only achieve impedance matching, and can also the gain flatness of Modulating Power amplifier.
Concrete, the collector electrode of the amplifying circuit of this integrated amplifier 101 connects power Vcc by the second inductance 106.This second inductance 106 is stray inductance.
Although described preferred embodiment of the present utility model, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the utility model scope.
Obviously, those skilled in the art can carry out various change and modification to the utility model and not depart from spirit and scope of the present utility model.Like this, if these amendments of the present utility model and modification belong within the scope of the utility model claim and equivalent technologies thereof, then the utility model is also intended to comprise these change and modification.
Claims (2)
1. a radio communication power amplifier apparatus, is characterized in that, comprising: integrated amplifier, driving stage power amplifier and final power amplifier;
By match circuit cascade between integrated amplifier and driving stage power amplifier, by orthocoupler cascade between described final power amplifier and described driving stage power amplifier, described match circuit at least comprises the first electric capacity, the second electric capacity and the first inductance, first electric capacity and the second capacitances in series are connected between the amplifying circuit collector electrode of preamplifier and the amplifying circuit base stage of driving stage power amplifier, described first inductance one end connects described first electric capacity second electric capacity intermediate node, other end ground connection.
2. radio communication power amplifier apparatus according to claim 1, is characterized in that, the collector electrode of described integrated amplifier connects power supply by inductance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520354729.9U CN204578485U (en) | 2015-05-28 | 2015-05-28 | A kind of radio communication power amplifier apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520354729.9U CN204578485U (en) | 2015-05-28 | 2015-05-28 | A kind of radio communication power amplifier apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204578485U true CN204578485U (en) | 2015-08-19 |
Family
ID=53871074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520354729.9U Expired - Fee Related CN204578485U (en) | 2015-05-28 | 2015-05-28 | A kind of radio communication power amplifier apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204578485U (en) |
-
2015
- 2015-05-28 CN CN201520354729.9U patent/CN204578485U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20150819 Termination date: 20190528 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |