JPH01119206U - - Google Patents
Info
- Publication number
- JPH01119206U JPH01119206U JP1988013842U JP1384288U JPH01119206U JP H01119206 U JPH01119206 U JP H01119206U JP 1988013842 U JP1988013842 U JP 1988013842U JP 1384288 U JP1384288 U JP 1384288U JP H01119206 U JPH01119206 U JP H01119206U
- Authority
- JP
- Japan
- Prior art keywords
- coupling capacitor
- semiconductor
- high frequency
- amplification element
- amplifies
- 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 4
- 239000003990 capacitor Substances 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 4
- 239000004065 semiconductor Substances 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Landscapes
- Amplifiers (AREA)
Description
第１図〜第３図は各々この考案の第１〜第３の
実施例の構成を示す回路図、第４図は従来の高周
波増幅回路の構成を示す回路図、第５図はインタ
ーモジユレーシヨンを説明するための図、第６図
は第１の実施例の変形例を示す回路図である。
２……結合コンデンサ、３……ＦＥＴ、２１，
３２，４２，４４……抵抗、２２，３３，４３，
５１……可変容量ダイオード。
1 to 3 are circuit diagrams showing the configurations of the first to third embodiments of this invention, FIG. 4 is a circuit diagram showing the configuration of a conventional high frequency amplification circuit, and FIG. 5 is an intermodule circuit diagram. FIG. 6 is a circuit diagram showing a modification of the first embodiment. 2...Coupling capacitor, 3...FET, 21,
32, 42, 44...Resistance, 22, 33, 43,
51...Variable capacitance diode.
Claims (1)
周波信号を増幅する半導体増幅素子と、 (c) 前記結合コンデンサの、半導体増幅素子側
のリードと接地との間に介挿された可変容量ダイ
オードと、 (d) 前記半導体増幅素子の出力信号のレベルの
大／小に応じて前記可変容量ダイオードの容量を
大／小に制御する制御手段と、 を具備してなる高周波増幅回路。[Claims for Utility Model Registration] (a) a coupling capacitor; (b) a semiconductor amplification element that amplifies a high frequency signal input through the coupling capacitor; and (c) a semiconductor amplification element side of the coupling capacitor. (d) a control means for controlling the capacitance of the variable capacitance diode to be large or small in accordance with the level of the output signal of the semiconductor amplifying element; A high frequency amplification circuit comprising: and.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988013842U JPH01119206U (en) | 1988-02-04 | 1988-02-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988013842U JPH01119206U (en) | 1988-02-04 | 1988-02-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01119206U true JPH01119206U (en) | 1989-08-11 |
Family
ID=31224503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988013842U Pending JPH01119206U (en) | 1988-02-04 | 1988-02-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01119206U (en) |
-
1988
- 1988-02-04 JP JP1988013842U patent/JPH01119206U/ja active Pending