JPH0324708U - - Google Patents
Info
- Publication number
- JPH0324708U JPH0324708U JP8547289U JP8547289U JPH0324708U JP H0324708 U JPH0324708 U JP H0324708U JP 8547289 U JP8547289 U JP 8547289U JP 8547289 U JP8547289 U JP 8547289U JP H0324708 U JPH0324708 U JP H0324708U
- Authority
- JP
- Japan
- Prior art keywords
- capacitor
- diode
- cathode
- high frequency
- resistor
- 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
- 239000003990 capacitor Substances 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Amplifiers (AREA)
Description
第１図は本考案の帯域補償回路の回路図、第２
図は従来の帯域補償回路の回路図、第３図ａはＰ
ＩＮダイオードの順方向電流−高周波抵抗特性を
示すグラフ、第３図ｂは可変容量ダイオードの逆
電圧−端子間容量特性を示すグラフである。
１……信号源、２，８，１２，１５，１８……
コンデンサ、３，４，５，７，１１，１３，１４
，１９……抵抗器、６……ＮＰＮトランジスタ、
９……ＰＩＮダイオード、１０……可変容量ダイ
オード、１６……負荷抵抗、１７……エミツタ接
地増幅器。
Figure 1 is a circuit diagram of the band compensation circuit of the present invention, Figure 2 is a circuit diagram of the band compensation circuit of the present invention.
The figure is a circuit diagram of a conventional band compensation circuit, and Figure 3a is a P
FIG. 3b is a graph showing the forward current vs. high frequency resistance characteristics of the IN diode, and FIG. 3b is a graph showing the reverse voltage vs. terminal capacitance characteristics of the variable capacitance diode. 1... Signal source, 2, 8, 12, 15, 18...
Capacitor, 3, 4, 5, 7, 11, 13, 14
, 19...Resistor, 6...NPN transistor,
9...PIN diode, 10...Variable capacitance diode, 16...Load resistor, 17...Emitter grounded amplifier.
Claims (1)
のエミツタ抵抗に並列接続した第１のコンデンサ
と、前記第１のコンデンサに直列に接続され前記
第１のコンデンサからの順方向電流の変化に対し
高周波抵抗を可変できる第１のダイオードと、前
記第１のコンデンサと第１のダイオードのアノー
ドの接続点に制御電圧Ｖ１を与える手段と、前記
第１のダイオードのカソードを抵抗器にて接地す
る手段と、前記第１のダイオードのカソード側に
直列接続した第２のコンデンサと、該第２のコン
デンサの他端に接続され逆電圧の変化に対し端子
間容量を可変できる可変容量ダイオードと、前記
第２のコンデンサと前記可変容量ダイオードのカ
ソード間に制御電圧Ｖ２を与える手段とを有し、
制御電圧Ｖ１，Ｖ２にてピーキング周波数及びピ
ーキングのＱを可変できることを特徴とする帯域
補償回路。 A grounded emitter amplifier, a first capacitor connected in parallel to the emitter resistor of the grounded emitter amplifier, and a high frequency resistance that is connected in series to the first capacitor and whose high frequency resistance is variable in response to changes in forward current from the first capacitor. means for applying a control voltage V1 to a connection point between the first capacitor and the anode of the first diode; means for grounding the cathode of the first diode with a resistor; a second capacitor connected in series to the cathode side of the first diode; a variable capacitance diode connected to the other end of the second capacitor and capable of varying the capacitance between the terminals in response to changes in reverse voltage; and the second capacitor. and means for applying a control voltage V2 between the cathode of the variable capacitance diode,
A band compensation circuit characterized in that a peaking frequency and peaking Q can be varied by controlling voltages V 1 and V 2 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8547289U JPH0324708U (en) | 1989-07-19 | 1989-07-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8547289U JPH0324708U (en) | 1989-07-19 | 1989-07-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0324708U true JPH0324708U (en) | 1991-03-14 |
Family
ID=31634627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8547289U Pending JPH0324708U (en) | 1989-07-19 | 1989-07-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0324708U (en) |
-
1989
- 1989-07-19 JP JP8547289U patent/JPH0324708U/ja active Pending
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