JPS63147047U - - Google Patents

Info

Publication number
JPS63147047U
JPS63147047U JP3784087U JP3784087U JPS63147047U JP S63147047 U JPS63147047 U JP S63147047U JP 3784087 U JP3784087 U JP 3784087U JP 3784087 U JP3784087 U JP 3784087U JP S63147047 U JPS63147047 U JP S63147047U
Authority
JP
Japan
Prior art keywords
oscillator
capacitor
carrier wave
input signal
variable reactance
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
Application number
JP3784087U
Other languages
Japanese (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 JP3784087U priority Critical patent/JPS63147047U/ja
Publication of JPS63147047U publication Critical patent/JPS63147047U/ja
Pending legal-status Critical Current

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

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の一実施例による変調回路の回
路図、第２図は第１図の回路の入出力波形図の一
例、第３図は従来の変調回路の一例を示す回路図
である。 ３０…発振器、３２…可変リアクタンス部、Ｃ
…コンデンサ、Ｔ…トランジスタ。 FIG. 1 is a circuit diagram of a modulation circuit according to an embodiment of the present invention, FIG. 2 is an example of an input/output waveform diagram of the circuit of FIG. 1, and FIG. 3 is a circuit diagram showing an example of a conventional modulation circuit. . 30... Oscillator, 32... Variable reactance section, C
...Capacitor, T...Transistor.

Claims (1)

【実用新案登録請求の範囲】 搬送波を発生する発振器と、該搬送波の変調に
用いられる変調入力信号に応じて該発振器の発振
周波数を変化させる可変リアクタンス部とを備え
、 該可変リアクタンス部は、 コンデンサと、 一端が該発振器の入力に接続されており、他端
が該コンデンサに接続されており、制御端に該変
調入力信号を受けるスイツチング素子とを具備す
ることを特徴とする変調回路。[Claims for Utility Model Registration] An oscillator that generates a carrier wave, and a variable reactance section that changes the oscillation frequency of the oscillator according to a modulation input signal used to modulate the carrier wave, the variable reactance section comprising: a capacitor; and a switching element having one end connected to the input of the oscillator, the other end connected to the capacitor, and receiving the modulation input signal at a control end.
JP3784087U 1987-03-17 1987-03-17 Pending JPS63147047U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3784087U JPS63147047U (en) 1987-03-17 1987-03-17

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3784087U JPS63147047U (en) 1987-03-17 1987-03-17

Publications (1)

Publication Number Publication Date
JPS63147047U true JPS63147047U (en) 1988-09-28

Family

ID=30849528

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3784087U Pending JPS63147047U (en) 1987-03-17 1987-03-17

Country Status (1)

Country Link
JP (1) JPS63147047U (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS494558B1 (en) * 1970-11-18 1974-02-01
JPS5334450A (en) * 1976-09-11 1978-03-31 Saakitsuto Dezain Yuugengaishi Frequency modulating system by pulse signal

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS494558B1 (en) * 1970-11-18 1974-02-01
JPS5334450A (en) * 1976-09-11 1978-03-31 Saakitsuto Dezain Yuugengaishi Frequency modulating system by pulse signal

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