JPH0455820U - - Google Patents

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Publication number
JPH0455820U
JPH0455820U JP9609790U JP9609790U JPH0455820U JP H0455820 U JPH0455820 U JP H0455820U JP 9609790 U JP9609790 U JP 9609790U JP 9609790 U JP9609790 U JP 9609790U JP H0455820 U JPH0455820 U JP H0455820U
Authority
JP
Japan
Prior art keywords
output
phase
modulated
local oscillation
carrier wave
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
JP9609790U
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 JP9609790U priority Critical patent/JPH0455820U/ja
Publication of JPH0455820U publication Critical patent/JPH0455820U/ja
Pending legal-status Critical Current

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  • Amplitude Modulation (AREA)
  • 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、従来例を示すブロツク図、第２図は
本考案の一実施例である。 ２……同相成分変調回路、３……直交成分変調
回路、４……位相シフト回路、５……波長合成器
、６……振幅変動検出器。 FIG. 1 is a block diagram showing a conventional example, and FIG. 2 is an embodiment of the present invention. 2... In-phase component modulation circuit, 3... Quadrature component modulation circuit, 4... Phase shift circuit, 5... Wavelength combiner, 6... Amplitude fluctuation detector.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 基底信号同相成分と局部発振回路よりの搬送波
出力及び基底信号直交成分と局部発振回路出力を
規定位相差だけ位相シフトさせた搬送波とにより
それぞれ変調を行い、その２つの変調波を合成し
て、定振幅の変調出力を得る直交変調器において
、出力変調波の振幅変動を検出し、この振幅変動
が最小となるよう、位相シフト回路の位相シフト
量を制御することにより直交性を保つことを特徴
とした直交変調器。 Modulation is performed using the base signal in-phase component and the carrier wave output from the local oscillation circuit, and the base signal orthogonal component and the carrier wave whose phase is shifted by a specified phase difference from the local oscillation circuit output, and the two modulated waves are combined and fixed. In a quadrature modulator that obtains an amplitude modulated output, orthogonality is maintained by detecting the amplitude fluctuation of the output modulated wave and controlling the phase shift amount of the phase shift circuit so that this amplitude fluctuation is minimized. quadrature modulator.
JP9609790U 1990-09-14 1990-09-14 Pending JPH0455820U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9609790U JPH0455820U (en) 1990-09-14 1990-09-14

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9609790U JPH0455820U (en) 1990-09-14 1990-09-14

Publications (1)

Publication Number Publication Date
JPH0455820U true JPH0455820U (en) 1992-05-13

Family

ID=31835363

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9609790U Pending JPH0455820U (en) 1990-09-14 1990-09-14

Country Status (1)

Country Link
JP (1) JPH0455820U (en)

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