JPS5946048U - Receiving machine - Google Patents
Receiving machineInfo
- Publication number
- JPS5946048U JPS5946048U JP14005182U JP14005182U JPS5946048U JP S5946048 U JPS5946048 U JP S5946048U JP 14005182 U JP14005182 U JP 14005182U JP 14005182 U JP14005182 U JP 14005182U JP S5946048 U JPS5946048 U JP S5946048U
- Authority
- JP
- Japan
- Prior art keywords
- filter element
- mixer
- resonant
- receiver
- resonant frequency
- 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.)
- Granted
Links
Landscapes
- Superheterodyne Receivers (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図及び第２図は従来の受信機の構成を説明するため
の回路図、第３図は本考案の一実施例を示す回路構成図
、第４図は水晶フィルタの測定回路図、第５図は第３図
に示す受信機の周波数帯域特性図である。
１０．２６・・・・・・トランジスタ、１２・・・・・
・水晶フ゛イルタ、３０・・・・・・第１局部発振器、
３４・・・・・・第２混合器、３８・・・・・・第２局
部発振器、４６・・・・・・共振用コイル、４８．５０
・・・・・・共振用コンデンサ。1 and 2 are circuit diagrams for explaining the configuration of a conventional receiver, FIG. 3 is a circuit configuration diagram showing an embodiment of the present invention, FIG. 4 is a measurement circuit diagram of a crystal filter, and FIG. FIG. 5 is a frequency band characteristic diagram of the receiver shown in FIG. 3. 10.26...Transistor, 12...
・Crystal filter, 30...first local oscillator,
34...Second mixer, 38...Second local oscillator, 46...Resonance coil, 48.50
...Resonance capacitor.
Claims (2)
ら出力された混合信号がこれに共振する同調回路を介し
てフィルタ素子に供給される受信機において、前記同調
回路は、前記混合器の負荷とされた定インダクタンスの
共振用コイルと、信号経路中に挿入された定容量の共振
用コンデンサと、を含み、共振周波数が前記フィルタ素
子の共振周波数の下側に設定されて前記混合器と前記フ
ィルタ素子のインピーダンスマツチングを行なう、こと
を特徴とする受信機。(1) In a receiver in which a filter element is provided after the mixer and a mixed signal output from the mixer is supplied to the filter element via a tuning circuit that resonates therewith, the tuning circuit is connected to the mixer. The filter element includes a resonant coil of constant inductance as a load and a resonant capacitor of constant capacitance inserted in the signal path, and the resonant frequency is set below the resonant frequency of the filter element. A receiver characterized in that impedance matching of the filter element is performed.
番線いて、発振周波数が前記フィルタ素子の共振周波数
より上側に設定された局部発振器と、該発振器の局部発
振周波数信号と前記フィルタ素子の出力信号とが供給さ
れる第２の混合器とが設けられたことを特徴とする受信
機。(2) Utility Model Registration A local oscillator having a receiver number line as set forth in claim (1) and having an oscillation frequency set above the resonant frequency of the filter element, a local oscillation frequency signal of the oscillator, and the filter and a second mixer to which the output signal of the element is supplied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14005182U JPS5946048U (en) | 1982-09-17 | 1982-09-17 | Receiving machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14005182U JPS5946048U (en) | 1982-09-17 | 1982-09-17 | Receiving machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5946048U true JPS5946048U (en) | 1984-03-27 |
| JPS636906Y2 JPS636906Y2 (en) | 1988-02-27 |
Family
ID=30313705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14005182U Granted JPS5946048U (en) | 1982-09-17 | 1982-09-17 | Receiving machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5946048U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60237730A (en) * | 1984-05-11 | 1985-11-26 | Matsushita Electric Ind Co Ltd | Am receiver |
| JPS61178759U (en) * | 1985-04-11 | 1986-11-07 |
-
1982
- 1982-09-17 JP JP14005182U patent/JPS5946048U/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60237730A (en) * | 1984-05-11 | 1985-11-26 | Matsushita Electric Ind Co Ltd | Am receiver |
| JPS61178759U (en) * | 1985-04-11 | 1986-11-07 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS636906Y2 (en) | 1988-02-27 |
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