JPS59140547U - AM receiver - Google Patents
AM receiverInfo
- Publication number
- JPS59140547U JPS59140547U JP3360983U JP3360983U JPS59140547U JP S59140547 U JPS59140547 U JP S59140547U JP 3360983 U JP3360983 U JP 3360983U JP 3360983 U JP3360983 U JP 3360983U JP S59140547 U JPS59140547 U JP S59140547U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- receiver
- intermediate frequency
- signal
- detection circuit
- 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
Landscapes
- Control Of Amplification And Gain Control (AREA)
- Noise Elimination (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来のＡＭ受信機の一例を示すブロック系統図
、第２図は本考案になるＡＭ受信機の一実施例を示すブ
ロック系統図、第３図は本考案になるＡＭ受信機の要部
の一実施例を示す回路系統図、第４図は中間周波トラン
スの振幅−周波数特性の一例を示す図、第５図は本考案
の要部の一変形例を示す回路系統図である。
１・・・アンテナ回路、２１．８・・・高周波増幅回路
、３．９・・・周波数変換回路、４・・・中間周波増幅
回路、５・・・検波回路、１０・・・周波数変換器、１
１・・・中間周波トランス（ＩＦＴ）、１３・・・レベ
ル検出回路、１４・・・可変インピーダンス素子。Fig. 1 is a block system diagram showing an example of a conventional AM receiver, Fig. 2 is a block system diagram showing an embodiment of an AM receiver according to the present invention, and Fig. 3 is a block system diagram showing an example of an AM receiver according to the present invention. FIG. 4 is a diagram showing an example of the amplitude-frequency characteristics of an intermediate frequency transformer; FIG. 5 is a circuit diagram showing a modification of the main part of the present invention. . DESCRIPTION OF SYMBOLS 1... Antenna circuit, 21.8... High frequency amplification circuit, 3.9... Frequency conversion circuit, 4... Intermediate frequency amplification circuit, 5... Detection circuit, 10... Frequency converter ,1
1... Intermediate frequency transformer (IFT), 13... Level detection circuit, 14... Variable impedance element.
Claims (1)
間周波増幅回路の利得側御を行なうＡＧＣ回路を有する
ＡＭ受信機において、該中間周波増幅回路へ中間周波信
号を出力する周波数変換回路より取り出された妨害信号
レベルを検出する検出回路を有し、該検出回路の検出妨
害信号レベルが一定値以上のときに高周波増幅回路の利
得を可変制御するよう構成したＡＭ受信機。In an AM receiver having an AGC circuit that controls the gain of at least an intermediate frequency amplifier circuit using a signal extracted from a part of the detection circuit, interference extracted from a frequency conversion circuit that outputs an intermediate frequency signal to the intermediate frequency amplifier circuit. An AM receiver comprising a detection circuit for detecting a signal level, and configured to variably control the gain of a high frequency amplification circuit when the level of the interference signal detected by the detection circuit is above a certain value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3360983U JPS59140547U (en) | 1983-03-09 | 1983-03-09 | AM receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3360983U JPS59140547U (en) | 1983-03-09 | 1983-03-09 | AM receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59140547U true JPS59140547U (en) | 1984-09-19 |
Family
ID=30164392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3360983U Pending JPS59140547U (en) | 1983-03-09 | 1983-03-09 | AM receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59140547U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013074505A (en) * | 2011-09-28 | 2013-04-22 | Kyocera Corp | Communication apparatus and communication control method |
| JP2016513937A (en) * | 2013-03-11 | 2016-05-16 | クゥアルコム・インコーポレイテッドＱｕａｌｃｏｍｍ Ｉｎｃｏｒｐｏｒａｔｅｄ | Amplifier with inductive degeneration, configurable gain, and input matching |
-
1983
- 1983-03-09 JP JP3360983U patent/JPS59140547U/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013074505A (en) * | 2011-09-28 | 2013-04-22 | Kyocera Corp | Communication apparatus and communication control method |
| JP2016513937A (en) * | 2013-03-11 | 2016-05-16 | クゥアルコム・インコーポレイテッドＱｕａｌｃｏｍｍ Ｉｎｃｏｒｐｏｒａｔｅｄ | Amplifier with inductive degeneration, configurable gain, and input matching |
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