JPS6364123U - - Google Patents
Info
- Publication number
- JPS6364123U JPS6364123U JP15709886U JP15709886U JPS6364123U JP S6364123 U JPS6364123 U JP S6364123U JP 15709886 U JP15709886 U JP 15709886U JP 15709886 U JP15709886 U JP 15709886U JP S6364123 U JPS6364123 U JP S6364123U
- Authority
- JP
- Japan
- Prior art keywords
- afc
- output
- variable capacitance
- signal
- capacitance element
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Superheterodyne Receivers (AREA)
Description
第１図は本考案の一実施例を示す回路図、第２
図は従来の回路図、第３図は本願の出願人が先に
出願した回路図である。
１′，４……フロントエンド、６……ＩＦアン
プ、７……検波回路、９′，１０……ＡＦＣ端子
、１１……反転回路。
Figure 1 is a circuit diagram showing one embodiment of the present invention;
The figure is a conventional circuit diagram, and FIG. 3 is a circuit diagram previously filed by the applicant of the present application. 1', 4...front end, 6...IF amplifier, 7...detection circuit, 9', 10...AFC terminal, 11...inverting circuit.
Claims (1)
数の可変およびＡＦＣ用を共通の可変容量素子で
制御し、出力からＩＦ信号を出力する第１のフロ
ントエンドと、この第１のフロントエンドより低
い周波数のＦＭ受信帯域を担当し、同調周波数の
可変およびＡＦＣをそれぞれの可変容量素子で制
御し、出力からＩＦ信号を出力する第２のフロン
トエンドと、この第２および前記第１のフロント
エンドの各ＩＦ信号を増幅するＩＦアンプと、こ
のＩＦアンプの出力を検波する検波回路と、この
検波回路のＳカーブ出力の電圧を前記第２のフロ
ントエンドのＡＦＣ用の可変容量素子に印加して
ＡＦＣをかける第１のＡＦＣ手段および前記第２
のフロントエンドの同調周波数の可変用それにＡ
ＦＣ用の可変容量素子に位相を反転してＡＦＣを
かけるＡＦＣ手段とからなるＵＨＦ／ＶＨＦ Ｆ
Ｍラジオ受信機。 A first front end that is in charge of the high frequency FM reception band, controls variable tuning frequency and AFC using a common variable capacitance element, and outputs an IF signal from its output; a second front end which is in charge of the FM reception band of , controls tuning frequency variation and AFC with respective variable capacitance elements, and outputs an IF signal from its output; and each of the second and first front ends. An IF amplifier that amplifies the IF signal, a detection circuit that detects the output of this IF amplifier, and a voltage of the S curve output of this detection circuit is applied to the variable capacitance element for AFC of the second front end to perform AFC. the first AFC means for multiplying the
For varying the tuning frequency of the front end of the
UHF/VHF F consisting of AFC means that applies AFC to a variable capacitance element for FC by inverting the phase.
M radio receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15709886U JPS6364123U (en) | 1986-10-14 | 1986-10-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15709886U JPS6364123U (en) | 1986-10-14 | 1986-10-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6364123U true JPS6364123U (en) | 1988-04-27 |
Family
ID=31079333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15709886U Pending JPS6364123U (en) | 1986-10-14 | 1986-10-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6364123U (en) |
-
1986
- 1986-10-14 JP JP15709886U patent/JPS6364123U/ja active Pending
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