JPS6411012U - - Google Patents
Info
- Publication number
- JPS6411012U JPS6411012U JP1987105961U JP10596187U JPS6411012U JP S6411012 U JPS6411012 U JP S6411012U JP 1987105961 U JP1987105961 U JP 1987105961U JP 10596187 U JP10596187 U JP 10596187U JP S6411012 U JPS6411012 U JP S6411012U
- Authority
- JP
- Japan
- Prior art keywords
- oscillation
- frequency
- output
- mixing
- outputs
- 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
- 230000010355 oscillation Effects 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Superheterodyne Receivers (AREA)
Description
第１図はこの考案の一実施例の構成を示すブロ
ツク図、第２図は同実施例の分岐器の構成を示す
ブロツク図、第３図は従来のＣＡＴＶコンバータ
の構成を示すブロツク図である。
１……ＰＬＬ制御回路（制御手段）、ＭＡ２…
…第２ミキサ（第１の混合手段）、ＭＡ３……第
３ミキサ（第２の混合手段）、Ｌ２……第２発振
器（第１の発振手段）、Ｌ３……第３発振器（第
２の発振手段）、５……分岐器。
FIG. 1 is a block diagram showing the configuration of an embodiment of this invention, FIG. 2 is a block diagram showing the configuration of a branching switch of the same embodiment, and FIG. 3 is a block diagram showing the configuration of a conventional CATV converter. . 1...PLL control circuit (control means), MA2...
...Second mixer (first mixing means), MA3...Third mixer (second mixing means), L2...Second oscillator (first oscillation means), L3...Third oscillator (second Oscillation means), 5... Turnout.
Claims (1)
第２の発振手段の発振出力が各々供給される第１
および第２の混合手段とを有し、前段から供給さ
れる信号の周波数を前記第１および第２の混合手
段によつて順次周波数変換して出力する周波数変
換装置において、 前記第２の混合手段によつて、前記第１の混合
手段の変換出力以外に、前記第１の発振手段の発
振出力と前記第２の発振手段の発振出力を混合し
、前記第１および第２の発振手段の発振周波数の
差に相当する差信号を生成させると共に、前記差
信号の周波数が常に一定となるように前記第１お
よび第２の発振手段の発振周波数を制御する制御
手段を設けたことを特徴とする周波数変換装置。[Claims for Utility Model Registration] First and second oscillation means, and a first oscillation means to which the oscillation outputs of the first and second oscillation means are respectively supplied.
and a second mixing means, wherein the frequency converter sequentially converts the frequency of a signal supplied from a previous stage by the first and second mixing means and outputs the frequency-converted signal, the second mixing means In addition to the converted output of the first mixing means, the oscillation output of the first oscillation means and the oscillation output of the second oscillation means are mixed, and the oscillation output of the first and second oscillation means is mixed. The present invention is characterized by further comprising a control means for generating a difference signal corresponding to the difference in frequency and for controlling the oscillation frequencies of the first and second oscillation means so that the frequency of the difference signal is always constant. Frequency conversion device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987105961U JPS6411012U (en) | 1987-07-10 | 1987-07-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987105961U JPS6411012U (en) | 1987-07-10 | 1987-07-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6411012U true JPS6411012U (en) | 1989-01-20 |
Family
ID=31339044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987105961U Pending JPS6411012U (en) | 1987-07-10 | 1987-07-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6411012U (en) |
-
1987
- 1987-07-10 JP JP1987105961U patent/JPS6411012U/ja active Pending
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