JPH02137134U - - Google Patents
Info
- Publication number
- JPH02137134U JPH02137134U JP1989045234U JP4523489U JPH02137134U JP H02137134 U JPH02137134 U JP H02137134U JP 1989045234 U JP1989045234 U JP 1989045234U JP 4523489 U JP4523489 U JP 4523489U JP H02137134 U JPH02137134 U JP H02137134U
- Authority
- JP
- Japan
- Prior art keywords
- amplifier
- filter
- output
- circuit
- transmitter
- 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
- 230000002457 bidirectional effect Effects 0.000 claims description 2
- 230000005855 radiation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Transmitters (AREA)
Description
第１図は本考案の一実施例のブロツク図、第２
図は従来の双方向ＣＡＴＶコンバータのブロツク
図、第３図は第２図における送信機１のブロツク
図である。
１３……増幅器、１４……出力フイルタ、１６
……カツトオフ回路（第１のカツトオフ回路）、
２０……カツトオフ回路（第２のカツトオフ回路
）、２４……抵抗器（定インピーダンス素子）。
Figure 1 is a block diagram of one embodiment of the present invention;
The figure is a block diagram of a conventional bidirectional CATV converter, and FIG. 3 is a block diagram of the transmitter 1 in FIG. 13...Amplifier, 14...Output filter, 16
...Cut-off circuit (first cut-off circuit),
20...Cutoff circuit (second cutoff circuit), 24...Resistor (constant impedance element).
Claims (1)
給されると前記増幅器をオフ状態にする第１のカ
ツトオフ回路と、前記増幅器の出力信号から不要
幅射を除去する出力フイルタとを具備する双方向
有線通信用送信機において、 前記増幅器と前記出力フイルタとの間に設けら
れるとともに定インピーダンス素子を具備し、前
記制御信号が供給されない状態では前記増幅器と
前記出力フイルタとの間を高周波的に導通状態に
し、前記制御信号が供給されると前記増幅器と前
記出力フイルタとの間を高周波的に非導通状態に
するとともに、前記フイルタを前記定インピーダ
ンス素子に終端させる第２のカツトオフ回路を具
備することを特徴とする双方向有線通信用送信機
。[Claims for Utility Model Registration] An amplifier that amplifies a high frequency signal, a first cut-off circuit that turns off the amplifier when a control signal is supplied, and an output that removes unnecessary radiation from the output signal of the amplifier. A transmitter for two-way wired communication comprising a filter, which is provided between the amplifier and the output filter and includes a constant impedance element, and when the control signal is not supplied, the transmitter for bidirectional wired communication is provided between the amplifier and the output filter. a second circuit that brings the amplifier and the output filter into a high-frequency conduction state when the control signal is supplied, and brings the filter into a high-frequency conduction state and terminates the filter to the constant impedance element; A transmitter for two-way wired communication characterized by comprising a cut-off circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989045234U JPH02137134U (en) | 1989-04-18 | 1989-04-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989045234U JPH02137134U (en) | 1989-04-18 | 1989-04-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02137134U true JPH02137134U (en) | 1990-11-15 |
Family
ID=31559225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989045234U Pending JPH02137134U (en) | 1989-04-18 | 1989-04-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02137134U (en) |
-
1989
- 1989-04-18 JP JP1989045234U patent/JPH02137134U/ja active Pending