JPS6035654U - squelch circuit - Google Patents
squelch circuitInfo
- Publication number
- JPS6035654U JPS6035654U JP1984100003U JP10000384U JPS6035654U JP S6035654 U JPS6035654 U JP S6035654U JP 1984100003 U JP1984100003 U JP 1984100003U JP 10000384 U JP10000384 U JP 10000384U JP S6035654 U JPS6035654 U JP S6035654U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- switching
- amplifier
- signal
- oscillator
- 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
Landscapes
- Transceivers (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図は本考案の一実施例を示すトーンスケルチ回路の
ブロック図、第２図は従来例を示すトーンスケルチ回路
のブロック図である。
２：ディスクリミネータ、３：選択性増幅器、４：帰還
回路、５ニスイツチング回路、６：出力調整回路、７：
検波回路、１１：位相検出回路、１２ニスイツチング回
路。FIG. 1 is a block diagram of a tone squelch circuit showing an embodiment of the present invention, and FIG. 2 is a block diagram of a tone squelch circuit showing a conventional example. 2: Discriminator, 3: Selective amplifier, 4: Feedback circuit, 5 Niswitching circuit, 6: Output adjustment circuit, 7:
Detection circuit, 11: Phase detection circuit, 12 Niswitching circuit.
Claims (1)
を兼用する選択性増幅器を有し、帰還回路及び第１のス
イッチング回路を用いて前記発振器と前記増幅器との切
換えを行う回路において、前記選択性増幅器の後段に、
発振器動作時の出力信号の位相を検出する位相検出回路
と、送信から受信への切換時に、この切換信号と前記位
相検出回路の位相検出信号とのアンドをとる第２のスイ
ッチング回路を設け、この第２のスイッチング回路の出
力により前記第１のスイッチング回路の切換時点を制御
することを特徴とするスケルチ回路。In a circuit that has a selectivity amplifier that serves as a tone signal oscillator during transmission and a tone signal amplifier during reception, and switches between the oscillator and the amplifier using a feedback circuit and a first switching circuit, the selectivity After the amplifier,
A phase detection circuit for detecting the phase of the output signal when the oscillator is operating, and a second switching circuit that ANDs this switching signal and the phase detection signal of the phase detection circuit when switching from transmission to reception are provided. A squelch circuit characterized in that a switching point of the first switching circuit is controlled by an output of the second switching circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984100003U JPS6035654U (en) | 1984-07-04 | 1984-07-04 | squelch circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984100003U JPS6035654U (en) | 1984-07-04 | 1984-07-04 | squelch circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6035654U true JPS6035654U (en) | 1985-03-12 |
Family
ID=30236756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984100003U Pending JPS6035654U (en) | 1984-07-04 | 1984-07-04 | squelch circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6035654U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012080161A (en) * | 2010-09-30 | 2012-04-19 | Icom Inc | Transmitter and computer program |
-
1984
- 1984-07-04 JP JP1984100003U patent/JPS6035654U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012080161A (en) * | 2010-09-30 | 2012-04-19 | Icom Inc | Transmitter and computer program |
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