JPS61131118U - - Google Patents
Info
- Publication number
- JPS61131118U JPS61131118U JP1324985U JP1324985U JPS61131118U JP S61131118 U JPS61131118 U JP S61131118U JP 1324985 U JP1324985 U JP 1324985U JP 1324985 U JP1324985 U JP 1324985U JP S61131118 U JPS61131118 U JP S61131118U
- Authority
- JP
- Japan
- Prior art keywords
- output
- amplifier
- filter
- detector
- variable gain
- 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
- 238000011084 recovery Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Control Of Amplification And Gain Control (AREA)
Description
第１図は、この考案の一実施例による復調回路
を示す構成図、第２図は、従来の復調回路を示す
構成図、第３図は、従来の復調回路の特性を示す
図、第４図は、この考案の一実施例による復調回
路の周波数関係を示す図、第５図は、この考案の
一実施例による復調回路の特性を示す図である。
２は、利得可変増幅器、３は復調器、４は増幅
器、６は高域通過フイルタ、７は検波器、８はル
ープフイルタである。なお図中同一符号は、同一
又は相当部分を示す。
FIG. 1 is a block diagram showing a demodulation circuit according to an embodiment of the invention, FIG. 2 is a block diagram showing a conventional demodulation circuit, FIG. 3 is a diagram showing the characteristics of the conventional demodulation circuit, and FIG. FIG. 5 is a diagram showing the frequency relationship of a demodulation circuit according to an embodiment of this invention, and FIG. 5 is a diagram showing characteristics of a demodulation circuit according to an embodiment of this invention. 2 is a variable gain amplifier, 3 is a demodulator, 4 is an amplifier, 6 is a high-pass filter, 7 is a detector, and 8 is a loop filter. Note that the same reference numerals in the figures indicate the same or equivalent parts.
Claims (1)
され、周波数変調又は位相変調された信号を復調
する復調器と、復調出力を増幅する増幅器と、上
記増幅器の出力の一部をとり出す高域通過フイル
タと、上記フイルタ出力の振幅を検出する検波器
と、検波器出力を上記利得可変増幅器に帰還させ
るループフイルタとを備えたことを特徴とする復
帰回路。 a variable gain amplifier; a demodulator connected to the output end of the amplifier for demodulating a frequency-modulated or phase-modulated signal; an amplifier for amplifying the demodulated output; and a high-pass device for extracting a part of the output of the amplifier. 1. A recovery circuit comprising: a filter; a detector for detecting the amplitude of the output of the filter; and a loop filter for feeding back the output of the detector to the variable gain amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1324985U JPS61131118U (en) | 1985-02-01 | 1985-02-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1324985U JPS61131118U (en) | 1985-02-01 | 1985-02-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61131118U true JPS61131118U (en) | 1986-08-16 |
Family
ID=30497083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1324985U Pending JPS61131118U (en) | 1985-02-01 | 1985-02-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61131118U (en) |
-
1985
- 1985-02-01 JP JP1324985U patent/JPS61131118U/ja active Pending
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