CN103259494A - Power amplifier - Google Patents
Power amplifier Download PDFInfo
- Publication number
- CN103259494A CN103259494A CN2012100354327A CN201210035432A CN103259494A CN 103259494 A CN103259494 A CN 103259494A CN 2012100354327 A CN2012100354327 A CN 2012100354327A CN 201210035432 A CN201210035432 A CN 201210035432A CN 103259494 A CN103259494 A CN 103259494A
- Authority
- CN
- China
- Prior art keywords
- power
- amplifier
- circuit
- microstrip line
- power amplifier
- Prior art date
- 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.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
- H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
- H03F1/0288—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers using a main and one or several auxiliary peaking amplifiers whereby the load is connected to the main amplifier using an impedance inverter, e.g. Doherty amplifiers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
- Microwave Amplifiers (AREA)
Abstract
An embodiment of the invention discloses a power amplifier. A direct-current power source is connected through a public output end of main and auxiliary amplifiers through a microstrip line, so that a direct-current power supply circuit is integrated with a radio frequency power transmission circuit, the microstrip line connected with the output end of the main and auxiliary amplifiers can play a role in transmitting radio frequency power and can also perform direct-current power supply to the main and auxiliary amplifiers, and the mode is never involved in circuit designing of conventional power amplifier. A conventional three-dimensional circuit adopting a power source jumper mode to supply power is changed into a planar circuit which is especially suitable for Doherty power amplifiers, convenience can be provided for circuit designing of the Doherty power amplifiers, and the planar circuit is especially suitable for conditions of designing on a single-layer double-face PCB (printed circuit board).
Description
Technical field
The present invention relates to the electronic circuit technology field, particularly a kind of power amplifier.
Background technology
Since nineteen nineties, mobile communication technology has been obtained development fast, and the communication technology has entered 3G by 2G and strided forward fast to 4G again.Simultaneously, along with the raising of environmental protection consciousness and the pressure of common carrier operation cost, adopt original back-off technology to guarantee high linear power amplifier, at cost and can not standing of becoming aspect safeguarding.So Xian Xing power amplifier technology becomes the power amplifier design technology of main flow efficiently.
Part power amplifier particularly Doherty power amplifier is that main amplifier and booster amplifier are formed by two power discharging devices, and its block diagram as shown in Figure 1.The power amplifier of this form can be raised the efficiency on the basis that guarantees certain linearity, more and more receive an acclaim, but it has an apparent in view shortcoming, during the design circuit plate, main amplifier and booster amplifier are on same plane, and all need the power supply power supply, so must adopt the mode at circuit board outside weldings power supply wire jumper that two power ends are coupled together on the two-sided circuit board of individual layer, the example as shown in Figure 1.Because power amplifier output power is bigger, can reach tens even hundreds of watts, simultaneously because its efficient is lower, so its heating is just more considerable.For the guaranteed output amplifier can operate as normal be unlikely to the power amplifier circuit plate to be installed in above the heat dissipation base of an aluminium sheet or copper coin formation because cross cause thermal damage.Therefore adopt supply power mode shown in Figure 1 that several shortcomings are just arranged: at first to be for guaranteeing that normal power supply and base contact with the good of miscellaneous part, must on heat dissipation base, excavate the groove that can hold the power supply wire jumper, if base thinner thickness even can be with whole base hollow out, this sample loading mode has increased complexity and the cost of base production process, has reduced the mechanical strength of base; Secondly, need artificial source of welding current wire jumper in the later stage of board production, but the quality of artificial welding is difficult to obtain assurance, therefore exists the risk of the power amplifier functional reliability of reduction; At last, this supply power mode has been delayed production process, and the waste of manpower resource has increased production cost.
Summary of the invention
The embodiment of the invention has proposed a kind of power amplifier, the supply power mode of main amplifier and auxilliary amplifier in the existing power amplifier is improved, thereby simplified the production process of power amplifier, enhances productivity, and reduces production costs.
Embodiment of the invention power amplifier, comprise main amplifier, auxilliary amplifier and power supply, the output of described main amplifier links to each other with the output of described auxilliary amplifier, forms public output, and described power supply is connected to the public output of described main amplifier and described auxilliary amplifier by microstrip line.
Preferably, described microstrip line is quarter-wave microstrip line or four/three-wavelength microstrip line.
Preferably, also comprise electric capacity, described electric capacity parallel connection, and be connected between described power supply and the described public output by described microstrip line.
Preferably, described power supply is+the 28V power supply.
Preferably, described power amplifier is the Doherty power amplifier.
Embodiment of the invention power amplifier, DC power supply is inserted by the public output of microstrip line from major-minor amplifier, in order further to avoid direct current signal to the influence of radiofrequency signal, the electric capacity that DC power supply earlier connects one group of parallel connection by microstrip line is received the public output of major-minor amplifier again, and the number of shunt capacitance designs as required.。So, DC power-supply circuit and radio-frequency power transmission circuit are merged, the microstrip line that major-minor amplifier out links to each other had both played the effect of transmission radio-frequency power, can carry out direct current supply to major-minor amplifier again, and this is that the design of conventional power amplifier circuit never relates to.Make also that simultaneously the stereo circuit that adopts power supply wire jumper mode to power changes planar circuit into, be specially adapted to the Doherty power amplifier, to provide convenience for the circuit design of Doherty power amplifier, be particularly useful for situation about designing at the two-sided pcb board of individual layer.
Description of drawings
Fig. 1 is the structural representation that adopts the two-way power amplifier that conventional power source wire jumper mode powers;
Fig. 2 is the structural representation of two-way power amplifier of the present invention;
Fig. 3 is the structural representation that adopts No. three power amplifiers that conventional power source wire jumper mode powers;
Fig. 4 is the structural representation of No. three power amplifiers of the present invention.
Embodiment
Fig. 1 is the structural representation of traditional two-way power amplifier, and Fig. 3 is the structural representation of traditional No. three power amplifiers.As can be known, in order to give the power supply of main amplifier and auxilliary amplifier simultaneously, traditional way is to adopt power supply wire jumper one end to connect main amplifier, and an end connects auxilliary amplifier, and this has obviously brought inconvenience to circuit trace.The embodiment of the invention is received power supply on the radio-frequency power transmission circuit dexterously, uses radio frequency transmission circuitry and powers to major-minor amplifier, and method is effective simply again.Explain the embodiment of the invention in detail below in conjunction with accompanying drawing.
Embodiment of the invention power amplifier as shown in Figure 2, comprises main amplifier and auxilliary amplifier.The output of main amplifier is connected by microstrip line with the output of auxilliary amplifier, and the centre of microstrip line is one section impedance matching microstrip line, i.e. the public output mouth of major-minor amplifier.The embodiment of the invention is connected in DC power supply on this section impedance matching microstrip line by microstrip line, forms the DC feedback microstrip line.The DC feedback microstrip line obtains open-circuit impedance by the change to impedance at impedance matching microstrip line port when providing voltage for power amplifier, so just can not exert an influence to radiofrequency signal output.In order further to avoid direct current supply that radiofrequency signal output is exerted an influence, the electric capacity that dc power supply connects one group of parallel connection by the DC feedback microstrip line is earlier received the public output of major-minor amplifier again, and the number of shunt capacitance designs as required.
As a preferred embodiment, above-mentioned DC feedback microstrip line is quarter-wave microstrip line or four/three-wavelength microstrip line.Above-mentioned power supply is+the 28V power supply.
Fig. 3 is the structural representation that adopts No. three power amplifiers that conventional power source wire jumper mode powers, and Fig. 4 is the structural representation of No. three power amplifiers of the embodiment of the invention.
The embodiment of the invention adopts above-mentioned connection mode, cleverly power amplifier DC power-supply circuit and radio-frequency power transmission circuit is carried out combination, has simplified circuit design.Find that in practice above-mentioned supply power mode also has some improvement to the bandwidth of expanding power amplifier, can strengthen broadband performance when not changing power amplifier matching circuit, meets the broadband development trend of power amplifier.Through facts have proved, the embodiment of the invention can the effective simplification production process, improves total quality and the conformity of production of power amplifier, has reduced production cost, has improved economic benefit.
The foregoing circuit structure of embodiment of the invention power amplifier is particularly useful for the Doherty power amplifier.
Above-described embodiment of the present invention does not constitute the restriction to protection range of the present invention.Any modification of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within the claim protection range of the present invention.
Claims (5)
1. power amplifier, comprise main amplifier, auxilliary amplifier and power supply, the output of described main amplifier links to each other with the output of described auxilliary amplifier, form public output, it is characterized in that described power supply is connected to the public output of described main amplifier and described auxilliary amplifier by microstrip line.
2. power amplifier according to claim 1 is characterized in that, also comprises electric capacity, described electric capacity parallel connection, and be connected between described power supply and the described public output by described microstrip line.
3. power amplifier according to claim 1 and 2 is characterized in that, described microstrip line is quarter-wave microstrip line or four/three-wavelength microstrip line.
4. power amplifier according to claim 1 and 2 is characterized in that, described power supply is+the 28V power supply.
5. power amplifier according to claim 1 and 2 is characterized in that, described power amplifier is the Doherty power amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100354327A CN103259494A (en) | 2012-02-16 | 2012-02-16 | Power amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100354327A CN103259494A (en) | 2012-02-16 | 2012-02-16 | Power amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103259494A true CN103259494A (en) | 2013-08-21 |
Family
ID=48963237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100354327A Pending CN103259494A (en) | 2012-02-16 | 2012-02-16 | Power amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103259494A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014180437A1 (en) * | 2013-12-13 | 2014-11-13 | 中兴通讯股份有限公司 | Radio-frequency power amplifier power supply method and device |
| CN106575947A (en) * | 2014-12-18 | 2017-04-19 | 株式会社东芝 | Doherty amplifier |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0630104A2 (en) * | 1993-06-04 | 1994-12-21 | Raytheon Company | Microwave Doherty amplifier |
| CN1954488A (en) * | 2005-02-28 | 2007-04-25 | 英飞凌科技股份公司 | Monolithically integrated power amplifier device |
| US20090102553A1 (en) * | 2007-09-03 | 2009-04-23 | Youngoo Yang | Doherty amplifier |
| US20090212870A1 (en) * | 2008-02-21 | 2009-08-27 | National Taiwan University | Cascode-cascade power amplifier assembly |
| CN201742373U (en) * | 2010-04-27 | 2011-02-09 | 三维通信股份有限公司 | Digital bias system of radio frequency power amplifier |
| CN102113207A (en) * | 2008-07-09 | 2011-06-29 | 意法爱立信有限公司 | Doherty amplifier with input network optimized for MMIC |
| CN102197584A (en) * | 2008-11-05 | 2011-09-21 | 日本电气株式会社 | Power amplifier and amplifying method employed therein |
| CN102355198A (en) * | 2011-08-01 | 2012-02-15 | 深圳大学 | Multi-path asymmetrical Doherty power amplifier |
-
2012
- 2012-02-16 CN CN2012100354327A patent/CN103259494A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0630104A2 (en) * | 1993-06-04 | 1994-12-21 | Raytheon Company | Microwave Doherty amplifier |
| CN1954488A (en) * | 2005-02-28 | 2007-04-25 | 英飞凌科技股份公司 | Monolithically integrated power amplifier device |
| US20090102553A1 (en) * | 2007-09-03 | 2009-04-23 | Youngoo Yang | Doherty amplifier |
| US20090212870A1 (en) * | 2008-02-21 | 2009-08-27 | National Taiwan University | Cascode-cascade power amplifier assembly |
| CN102113207A (en) * | 2008-07-09 | 2011-06-29 | 意法爱立信有限公司 | Doherty amplifier with input network optimized for MMIC |
| CN102197584A (en) * | 2008-11-05 | 2011-09-21 | 日本电气株式会社 | Power amplifier and amplifying method employed therein |
| CN201742373U (en) * | 2010-04-27 | 2011-02-09 | 三维通信股份有限公司 | Digital bias system of radio frequency power amplifier |
| CN102355198A (en) * | 2011-08-01 | 2012-02-15 | 深圳大学 | Multi-path asymmetrical Doherty power amplifier |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014180437A1 (en) * | 2013-12-13 | 2014-11-13 | 中兴通讯股份有限公司 | Radio-frequency power amplifier power supply method and device |
| CN106575947A (en) * | 2014-12-18 | 2017-04-19 | 株式会社东芝 | Doherty amplifier |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101785180B (en) | Broadband power amplifier | |
| CN101699767B (en) | Feed circuit of radio frequency power amplifier | |
| US8653889B1 (en) | Doherty amplifier having compact output matching and combining networks | |
| TWI492549B (en) | Multi-modes power amplifier circuit, multi-mode wireless transmitting module and method therefor | |
| CN103312272A (en) | Multi-mode doherty power amplifier | |
| CN109962686A (en) | A kind of double mode radio-frequency power amplification system | |
| CN102075833B (en) | Method, circuit and device for realizing 2.1 sound track power amplification by using double-channel circuit | |
| CN105510648B (en) | One kind is used for super high power GaN microwave device high-isolation microwave test fixtures | |
| US8559620B2 (en) | Communications circuit for reducing crosstalk | |
| CN109462411A (en) | RF Amplifier Module and communication terminal | |
| CN105656438B (en) | A kind of miniaturization power amplifier module | |
| CN201829806U (en) | Carbon dioxide laser radio frequency power board | |
| CN113645814B (en) | Heat radiation structure, power amplifier module and method of small-sized transmitting system | |
| CN103259494A (en) | Power amplifier | |
| CN100525085C (en) | Power amplifier using transmission line transformer | |
| CN202455316U (en) | Internally matched amplifier | |
| CN109936338B (en) | High-efficiency five-order inverse F-class power amplifier | |
| CN105450046A (en) | High-efficiency differential rectification circuit applying impedance compressed network | |
| CN105811065B (en) | A kind of small size ultra wideband power divider | |
| CN103944524A (en) | Ka frequency band frequency conversion module based on SMT packaging device | |
| CN101588195B (en) | Power amplification device and signal receiving and transmitting system | |
| JP5098991B2 (en) | High frequency module | |
| CN110086431A (en) | Envelope tracking power amplifier device | |
| CN207039546U (en) | Graphene radio frequency amplifier | |
| CN104716909A (en) | Power supplying method and device of RF power amplifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130821 |