JPS5899926U - Local oscillation output transmission circuit - Google Patents
Local oscillation output transmission circuitInfo
- Publication number
- JPS5899926U JPS5899926U JP19556681U JP19556681U JPS5899926U JP S5899926 U JPS5899926 U JP S5899926U JP 19556681 U JP19556681 U JP 19556681U JP 19556681 U JP19556681 U JP 19556681U JP S5899926 U JPS5899926 U JP S5899926U
- Authority
- JP
- Japan
- Prior art keywords
- oscillation
- output
- circuit
- oscillation circuit
- local oscillation
- 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
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Superheterodyne Receivers (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ＶＨＦ局発回路とＵＨＦ局発回路の発振出力を
プリスケーラに混合して導く回路の従来例を示す回路図
、第２図はこの考案に係る局部発振出力の伝送回路を示
す回路図、第３図はプリスケーラの入力インピーダンス
の周波数特性を示す特性図、第４図はプリスケーラの最
小入力感度周波数特性を示す特性図である。
２１・・・・・・ＶＨＦ局部発振回路、２３・・・・・
・低域ろ波回路、２４・・・・・・ＵＨＦ局部発振回路
、２５：・・・・・引出端子、２６・・・・・・プリス
ケーラ入力端子、ＩＣ・・・・・・誘導形結合器（Ｌ６
・・・・・・出力側共振線路、Ｌ７・・・・・・入力側
共振線路）、Ｃ７，Ｃｓ・・・・・・コンデンサ、Ｒ２
，Ｒ３・・・・・・抵抗。Figure 1 is a circuit diagram showing a conventional example of a circuit that mixes and guides the oscillation outputs of a VHF local oscillation circuit and a UHF local oscillation circuit to a prescaler, and Figure 2 is a circuit diagram showing a transmission circuit for local oscillation outputs according to this invention. , FIG. 3 is a characteristic diagram showing the frequency characteristic of the input impedance of the prescaler, and FIG. 4 is a characteristic diagram showing the minimum input sensitivity frequency characteristic of the prescaler. 21...VHF local oscillation circuit, 23...
・Low-pass filter circuit, 24: UHF local oscillation circuit, 25:... Output terminal, 26: Prescaler input terminal, IC... Inductive coupling Vessel (L6
...Output side resonant line, L7...Input side resonant line), C7, Cs...Capacitor, R2
, R3...Resistance.
Claims (1)
路と、この第１の発振回路の発振周波数よりも高域で発
振し、その発振出力は誘導形結合器を介して取り出され
る第２の発振回路と、第１の発振回路の出力端子と前記
誘導形結合器の出力側インダクタの一端に介装され、前
記第１の発振出力の高調波、および第２の発振出力の第
１の発振回路への漏洩成分を減衰させるろ波手段とを具
備し、前記第１の発振回路の出力端子と第２の発振回路
の出力端子を共有接続したことを特徴とする局部発振出
力の伝送回路。A first oscillation circuit whose oscillation frequency is controlled by a tuning voltage, and a second oscillation circuit which oscillates at a higher frequency than the oscillation frequency of the first oscillation circuit and whose oscillation output is taken out via an inductive coupler. a first oscillation circuit interposed between the output terminal of the first oscillation circuit and one end of the output side inductor of the inductive coupler, and generating harmonics of the first oscillation output and second oscillation output; A transmission circuit for local oscillation output, characterized in that the output terminal of the first oscillation circuit and the output terminal of the second oscillation circuit are commonly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19556681U JPS5899926U (en) | 1981-12-24 | 1981-12-24 | Local oscillation output transmission circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19556681U JPS5899926U (en) | 1981-12-24 | 1981-12-24 | Local oscillation output transmission circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5899926U true JPS5899926U (en) | 1983-07-07 |
| JPH0134443Y2 JPH0134443Y2 (en) | 1989-10-19 |
Family
ID=30108835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19556681U Granted JPS5899926U (en) | 1981-12-24 | 1981-12-24 | Local oscillation output transmission circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5899926U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001065679A1 (en) * | 2000-02-29 | 2001-09-07 | Fujitsu Media Devices Limited | Dual-band high-frequency oscillator |
-
1981
- 1981-12-24 JP JP19556681U patent/JPS5899926U/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001065679A1 (en) * | 2000-02-29 | 2001-09-07 | Fujitsu Media Devices Limited | Dual-band high-frequency oscillator |
| GB2365233A (en) * | 2000-02-29 | 2002-02-13 | Fujitsu Media Devices Ltd | High frequency dual band output oscillator |
| US6566969B2 (en) | 2000-02-29 | 2003-05-20 | Fujitsu Media Devices Limited | High frequency dual band output oscillator |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0134443Y2 (en) | 1989-10-19 |
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