JPH03117931U - - Google Patents
Info
- Publication number
- JPH03117931U JPH03117931U JP2660490U JP2660490U JPH03117931U JP H03117931 U JPH03117931 U JP H03117931U JP 2660490 U JP2660490 U JP 2660490U JP 2660490 U JP2660490 U JP 2660490U JP H03117931 U JPH03117931 U JP H03117931U
- Authority
- JP
- Japan
- Prior art keywords
- amplification
- frequency
- circuit
- input
- frequency input
- 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
- 230000003321 amplification Effects 0.000 claims description 5
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Control Of Amplification And Gain Control (AREA)
Description
第１図は、本考案による高周波増幅回路の一例
としてシングルＦＥＴを使用したＡＧＣ回路を示
す回路図、第２図はこのＡＧＣ回路を備えたフロ
ントエンドの一部を示す回路図、第３図は従来の
ＡＧＣ回路の回路図、第４図は制御電圧と利得変
動との関係を示す線図である。
Fig. 1 is a circuit diagram showing an AGC circuit using a single FET as an example of a high frequency amplification circuit according to the present invention, Fig. 2 is a circuit diagram showing a part of a front end equipped with this AGC circuit, and Fig. 3 is a circuit diagram showing a part of a front end equipped with this AGC circuit. FIG. 4, a circuit diagram of a conventional AGC circuit, is a diagram showing the relationship between control voltage and gain fluctuation.
Claims (1)
制御することにより電圧増幅利得を制御する増幅
回路であつて、前記高周波入力増幅素子のバイア
ス部に順方向のダイオードが接続されていること
を特徴とする高周波増幅回路。 An amplifier circuit that uses a high-frequency input amplification element and controls voltage amplification gain by controlling its input voltage, characterized in that a forward diode is connected to a bias section of the high-frequency input amplification element. High frequency amplification circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2660490U JPH03117931U (en) | 1990-03-14 | 1990-03-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2660490U JPH03117931U (en) | 1990-03-14 | 1990-03-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03117931U true JPH03117931U (en) | 1991-12-05 |
Family
ID=31529488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2660490U Pending JPH03117931U (en) | 1990-03-14 | 1990-03-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03117931U (en) |
-
1990
- 1990-03-14 JP JP2660490U patent/JPH03117931U/ja active Pending