VARIABLE GAIN AMPLIFIER
To provide a variable gain amplifier capable of giving a gain variable function to a power amplifier without lowering the output power of the power amplifier.SOLUTION: A gain adjustment part 102 which is constituted of a distribution switch 6 having a control terminal PC is provided to the input par...
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| Format | Patent |
| Language | English Japanese |
| Published |
17.10.2019
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| Subjects | |
| Online Access | Get full text |
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| Abstract | To provide a variable gain amplifier capable of giving a gain variable function to a power amplifier without lowering the output power of the power amplifier.SOLUTION: A gain adjustment part 102 which is constituted of a distribution switch 6 having a control terminal PC is provided to the input part of an amplifier circuit 101. A first end of a coupler CP is connected to an output line of the amplifier circuit 101, a second end of the coupler CP is connected to the anode of a diode D1, and to the cathode of the diode D1, a monitor terminal PM is connect via a low pass filter PLF1. The anode of the diode D1 is unbiased (ground potential=0 volt).SELECTED DRAWING: Figure 6
【課題】パワーアンプの出力電力を下げることなく、パワーアンプに利得可変機能を持たせる。【解決手段】増幅回路１０１の入力部に制御端子ＰＣを有する分布スイッチ６からなる利得調整部１０２を設ける。カプラＣＰの一端を増幅回路１０１の出力ラインに接続し、カプラＣＰの他端をダイオードＤ１のアノードに接続し、ダイオードＤ１のカソードに低域通過フィルタＰＬＦ１を介してモニタ端子ＰＭを接続する。ダイオードＤ１のアノードは無バイアス（接地電位＝０ボルトに設定）とする。【選択図】 図６ |
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| AbstractList | To provide a variable gain amplifier capable of giving a gain variable function to a power amplifier without lowering the output power of the power amplifier.SOLUTION: A gain adjustment part 102 which is constituted of a distribution switch 6 having a control terminal PC is provided to the input part of an amplifier circuit 101. A first end of a coupler CP is connected to an output line of the amplifier circuit 101, a second end of the coupler CP is connected to the anode of a diode D1, and to the cathode of the diode D1, a monitor terminal PM is connect via a low pass filter PLF1. The anode of the diode D1 is unbiased (ground potential=0 volt).SELECTED DRAWING: Figure 6
【課題】パワーアンプの出力電力を下げることなく、パワーアンプに利得可変機能を持たせる。【解決手段】増幅回路１０１の入力部に制御端子ＰＣを有する分布スイッチ６からなる利得調整部１０２を設ける。カプラＣＰの一端を増幅回路１０１の出力ラインに接続し、カプラＣＰの他端をダイオードＤ１のアノードに接続し、ダイオードＤ１のカソードに低域通過フィルタＰＬＦ１を介してモニタ端子ＰＭを接続する。ダイオードＤ１のアノードは無バイアス（接地電位＝０ボルトに設定）とする。【選択図】 図６ |
| Author | NOSAKA HIDEYUKI HAMADA YASUSHI |
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| DocumentTitleAlternate | 利得可変増幅器 |
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| Notes | Application Number: JP20180067532 |
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| RelatedCompanies | NIPPON TELEGR & TELEPH CORP |
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| Snippet | To provide a variable gain amplifier capable of giving a gain variable function to a power amplifier without lowering the output power of the power... |
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| SubjectTerms | BASIC ELECTRIC ELEMENTS BASIC ELECTRONIC CIRCUITRY CONTROL OF AMPLIFICATION DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TOANOTHER ELECTRICITY RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE WAVEGUIDES |
| Title | VARIABLE GAIN AMPLIFIER |
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