JPS5984909U - amplitude modulator - Google Patents

amplitude modulator

Info

Publication number
JPS5984909U
JPS5984909U JP18104882U JP18104882U JPS5984909U JP S5984909 U JPS5984909 U JP S5984909U JP 18104882 U JP18104882 U JP 18104882U JP 18104882 U JP18104882 U JP 18104882U JP S5984909 U JPS5984909 U JP S5984909U
Authority
JP
Japan
Prior art keywords
signal
self
excited oscillator
output signal
modulation
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
JP18104882U
Other languages
Japanese (ja)
Other versions
JPH0136337Y2 (en
Inventor
清美 河村
浩 小野
Original Assignee
株式会社東芝
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 by 株式会社東芝 filed Critical 株式会社東芝
Priority to JP18104882U priority Critical patent/JPS5984909U/en
Publication of JPS5984909U publication Critical patent/JPS5984909U/en
Application granted granted Critical
Publication of JPH0136337Y2 publication Critical patent/JPH0136337Y2/ja
Granted legal-status Critical Current

Links

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

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

第１図は従来のＰＷＭ変調器の構成を示す図、第２図は
第１図に示す自励発振器の構成を示す図、第３図は従来
の振幅変調装置の構成を示す図、第４図はこの考案に係
わる振幅変調装置の一実施例を示す構成図、第５図はこ
の考案に適用、される自励発振器の一例を示す構成図で
ある。 １１・・・自励発振器、１２・・・三角波形成器、１５
・・、・比較器、１７・・・スイッチング増幅器、３１
１〜３１３・・・ＰＷＭ変調器、３２１〜３２３・・・
被変調器、３３・・・送信周波数発振器、５２．５３・
・・分周器、５４・・・比較器、５５・・・低域通過フ
ィルタ、５６・・・直流増幅器、Ｄｖ・・・可変容量ダ
イオード。FIG. 1 is a diagram showing the configuration of a conventional PWM modulator, FIG. 2 is a diagram showing the configuration of the self-excited oscillator shown in FIG. 1, FIG. 3 is a diagram showing the configuration of a conventional amplitude modulator, and FIG. FIG. 5 is a block diagram showing an embodiment of an amplitude modulation device according to this invention, and FIG. 5 is a block diagram showing an example of a self-excited oscillator applied to this invention. 11...Self-excited oscillator, 12...Triangle waveformer, 15
... Comparator, 17... Switching amplifier, 31
1 to 313...PWM modulator, 321 to 323...
Modulated device, 33... Transmission frequency oscillator, 52.53.
... Frequency divider, 54... Comparator, 55... Low pass filter, 56... DC amplifier, Dv... Variable capacitance diode.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 自励発振器の出力信号より生成された三角波と変調信号
とを比較してＰＷＭ（パルス幅変調）信号を生成し、こ
の信号を増幅して所定レベルの変調信号を得るＰＷＭ変
調器と、この変調器の出力信号を送信周波数信号で振幅
変調する被変調器とからなる振幅変調装置において、前
記自励発振器の出力信号と送信周波数信号とを位相ロッ
クする手段を具備したことを特徴とする振幅変調装置。A PWM modulator that compares a triangular wave generated from an output signal of a self-excited oscillator with a modulation signal to generate a PWM (pulse width modulation) signal and amplifies this signal to obtain a modulation signal of a predetermined level; and a modulated device that amplitude modulates an output signal of the self-excited oscillator with a transmission frequency signal, the amplitude modulation device comprising a modulator that amplitude modulates an output signal of the self-excited oscillator with a transmission frequency signal, comprising means for phase-locking the output signal of the self-excited oscillator and the transmission frequency signal. Device.
JP18104882U 1982-11-30 1982-11-30 amplitude modulator Granted JPS5984909U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18104882U JPS5984909U (en) 1982-11-30 1982-11-30 amplitude modulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18104882U JPS5984909U (en) 1982-11-30 1982-11-30 amplitude modulator

Publications (2)

Publication Number Publication Date
JPS5984909U true JPS5984909U (en) 1984-06-08
JPH0136337Y2 JPH0136337Y2 (en) 1989-11-06

Family

ID=30392409

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18104882U Granted JPS5984909U (en) 1982-11-30 1982-11-30 amplitude modulator

Country Status (1)

Country Link
JP (1) JPS5984909U (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51131166U (en) * 1975-04-15 1976-10-22
JPS5582516A (en) * 1978-12-19 1980-06-21 Toshiba Corp Amplitude modulator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51131166U (en) * 1975-04-15 1976-10-22
JPS5582516A (en) * 1978-12-19 1980-06-21 Toshiba Corp Amplitude modulator

Also Published As

Publication number Publication date
JPH0136337Y2 (en) 1989-11-06

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