JPS61136615U - - Google Patents
Info
- Publication number
- JPS61136615U JPS61136615U JP1844285U JP1844285U JPS61136615U JP S61136615 U JPS61136615 U JP S61136615U JP 1844285 U JP1844285 U JP 1844285U JP 1844285 U JP1844285 U JP 1844285U JP S61136615 U JPS61136615 U JP S61136615U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- voltage
- power
- output
- changes
- 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
- 230000005540 biological transmission Effects 0.000 claims 1
- 230000005669 field effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 239000003990 capacitor Substances 0.000 description 6
- 230000003321 amplification Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
Landscapes
- Control Of Amplification And Gain Control (AREA)
- Amplifiers (AREA)
Description
第１図はこの考案の一実施例による電力増幅器
を示す回路図、第２図はＦＥＴ増幅器の電源電圧
と電流の関係を示す特性図、第３図はＦＥＴ増幅
器の電源電圧と出力電力、効率の関係を示す特性
図、第４図は従来の電力増幅器を示す回路図、第
５図は従来のＦＥＴ増幅器の電源電圧と電流の関
係を示す特性図、第６図は従来の電力増幅器の電
源電圧と出力電力、効率の関係を示す特性図であ
る。
１……駆動増幅用のＦＥＴ、２……電力増幅用
ＦＥＴ、３……入力結合コンデンサ、４……入力
整合用ストリツプ線路、５……ＲＦチヨークコイ
ル、６……抵抗、７……バイパスコンデンサ、８
……ＲＦチヨークコイル、９……電源バイパスコ
ンデンサ、１０……段間結合コンデンサ、１１…
…段間整合用ストリツプ線路、１２……ＲＦチヨ
ークコイル、１３……電源バイパスコンデンサ、
１４……抵抗、１５……抵抗、１６……出力整合
回路、１７……電源バイパスコンデンサ、１８…
…ＲＦ出力検波回路、１９……アイソレータ、２
０……電圧制御用トランジスタ、２１……電力コ
ントロール回路、２２……ＤＣ／ＤＣコンバータ
、２３……抵抗、２４……抵抗、２５……演算増
幅器、２６……ＲＦ信号入力端子、２７……ＲＦ
信号出力端子、２８……電源入力端子、２９……
電力コントロール制御信号入力端子、３０……電
源チヨークコイル。なお、図中、同一符号は同一
、または相当部分を示す。
Fig. 1 is a circuit diagram showing a power amplifier according to an embodiment of this invention, Fig. 2 is a characteristic diagram showing the relationship between the power supply voltage and current of the FET amplifier, and Fig. 3 is a diagram showing the power supply voltage, output power, and efficiency of the FET amplifier. 4 is a circuit diagram showing a conventional power amplifier, FIG. 5 is a characteristic diagram showing the relationship between power supply voltage and current of a conventional FET amplifier, and FIG. 6 is a power supply diagram of a conventional power amplifier. FIG. 3 is a characteristic diagram showing the relationship between voltage, output power, and efficiency. 1... FET for drive amplification, 2... FET for power amplification, 3... Input coupling capacitor, 4... Strip line for input matching, 5... RF chain coil, 6... Resistor, 7... Bypass capacitor, 8
...RF chain coil, 9...Power supply bypass capacitor, 10...Interstage coupling capacitor, 11...
... Strip line for interstage matching, 12 ... RF chain coil, 13 ... Power supply bypass capacitor,
14...Resistor, 15...Resistor, 16...Output matching circuit, 17...Power supply bypass capacitor, 18...
...RF output detection circuit, 19...Isolator, 2
0... Voltage control transistor, 21... Power control circuit, 22... DC/DC converter, 23... Resistor, 24... Resistor, 25... Operational amplifier, 26... RF signal input terminal, 27... RF
Signal output terminal, 28...Power input terminal, 29...
Power control control signal input terminal, 30...Power supply chain coil. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.
Claims (1)
増幅器において、外部からの制御信号によりドレ
イン電圧として供給する出力電圧が変化する第１
の電源と、この第１の電源により駆動され、これ
と逆極性の電圧をゲートバイアス電圧として供給
する第２の電源と、第１の電源の出力電圧の変化
に応じて第２の電源の出力電圧を第１の電源の出
力電圧の変化より大きな割合で変化させる制御回
路とを備え、上記電力増幅器の電力効率を高効率
に維持したまま送信出力の変化を安定して行える
ようにしたことを特徴とする電力増幅器。 In a power amplifier configured with a field effect transistor FET, the output voltage supplied as the drain voltage changes according to an external control signal.
a second power supply that is driven by the first power supply and supplies a voltage of opposite polarity as a gate bias voltage; and an output of the second power supply that changes in response to changes in the output voltage of the first power supply. and a control circuit that changes the voltage at a rate larger than the change in the output voltage of the first power supply, so that the transmission output can be stably changed while maintaining the power efficiency of the power amplifier at a high efficiency. Characteristic power amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1844285U JPS61136615U (en) | 1985-02-12 | 1985-02-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1844285U JPS61136615U (en) | 1985-02-12 | 1985-02-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61136615U true JPS61136615U (en) | 1986-08-25 |
Family
ID=30507087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1844285U Pending JPS61136615U (en) | 1985-02-12 | 1985-02-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61136615U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999029037A1 (en) * | 1997-11-28 | 1999-06-10 | Hitachi, Ltd. | High frequency power amplifying circuit, and mobile communication apparatus using it |
-
1985
- 1985-02-12 JP JP1844285U patent/JPS61136615U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999029037A1 (en) * | 1997-11-28 | 1999-06-10 | Hitachi, Ltd. | High frequency power amplifying circuit, and mobile communication apparatus using it |
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