JPH0186743U - - Google Patents

Info

Publication number
JPH0186743U
JPH0186743U JP18364187U JP18364187U JPH0186743U JP H0186743 U JPH0186743 U JP H0186743U JP 18364187 U JP18364187 U JP 18364187U JP 18364187 U JP18364187 U JP 18364187U JP H0186743 U JPH0186743 U JP H0186743U
Authority
JP
Japan
Prior art keywords
signal
amplifying
modulated wave
wave signal
modulated
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
Application number
JP18364187U
Other languages
English (en)
Other versions
JPH0427238Y2 (ja
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP18364187U priority Critical patent/JPH0427238Y2/ja
Publication of JPH0186743U publication Critical patent/JPH0186743U/ja
Application granted granted Critical
Publication of JPH0427238Y2 publication Critical patent/JPH0427238Y2/ja
Expired legal-status Critical Current

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Landscapes

  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Transmitters (AREA)

Description

【図面の簡単な説明】
第1図は本考案の一実施例になる送信モデムの
回路図、第2図は従来の送信モデムの回路図、第
3図は増巾素子にFETトランジスタを使用した
場合の増巾回路を夫々示す。 1……発振器、2,4,8……増巾器、3……
PSK変調器、7……バンドパスフイルタ、TC
……コントロール信号、TD……データ信号入力
端子、TO……出力端子、Q,Q……バイポ
ーラトランジスタ、Q……FETトランジスタ
、R〜R……抵抗、CA……ケーブル。

Claims (1)

  1. 【実用新案登録請求の範囲】 データ信号により搬送波発振信号が変調された
    被変調波信号を送信する送信用モデムにおいて、 該発振信号及び被変調波信号を夫々増巾する各
    一個の増巾器と、 該被変調波信号を増巾する出力増巾器とを共通
    のコントロール信号によりオフ状態又は動作状態
    に制御する様にした構成の送信用モデム。
JP18364187U 1987-11-30 1987-11-30 Expired JPH0427238Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18364187U JPH0427238Y2 (ja) 1987-11-30 1987-11-30

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18364187U JPH0427238Y2 (ja) 1987-11-30 1987-11-30

Publications (2)

Publication Number Publication Date
JPH0186743U true JPH0186743U (ja) 1989-06-08
JPH0427238Y2 JPH0427238Y2 (ja) 1992-06-30

Family

ID=31475055

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18364187U Expired JPH0427238Y2 (ja) 1987-11-30 1987-11-30

Country Status (1)

Country Link
JP (1) JPH0427238Y2 (ja)

Also Published As

Publication number Publication date
JPH0427238Y2 (ja) 1992-06-30

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