JPS54129815A - Compensation circuit for cross polarization discrimination - Google Patents

Compensation circuit for cross polarization discrimination

Info

Publication number
JPS54129815A
JPS54129815A JP3779878A JP3779878A JPS54129815A JP S54129815 A JPS54129815 A JP S54129815A JP 3779878 A JP3779878 A JP 3779878A JP 3779878 A JP3779878 A JP 3779878A JP S54129815 A JPS54129815 A JP S54129815A
Authority
JP
Japan
Prior art keywords
circuit
phase
modulation
quadruple
signal
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
JP3779878A
Other languages
Japanese (ja)
Other versions
JPS5835419B2 (en
Inventor
Nobuhiro Nakamura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP3779878A priority Critical patent/JPS5835419B2/en
Publication of JPS54129815A publication Critical patent/JPS54129815A/en
Publication of JPS5835419B2 publication Critical patent/JPS5835419B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/002—Reducing depolarization effects

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

PURPOSE:To perform the compensation for isdcrimination with a simple circuit without providing special unit, by adding the circuit obtaining opposite phase cancellation and compensation amount corresponding to the amplitude and phase of leaked interference waves to the circuit performing demodulation. CONSTITUTION:In the unit transmitting the first and second system modulation signals in quadruple modulation by using the first and second carriers having the first and second polarized surface in crossing, the separation circuits 3, 4 for H and V waves, phase adjustment and amplitude adjustment circuits 5, 6, synthesis circuit 7, and phase detectors 11 and 12 are provided. Further, the anti-modulation circuit 21 cancelling the modulation component due to the first signal of the reception signal of the first polarized surface, carrier reproduction circuit 22 reproducing the carrier from the output of the circuit 21, adjusting circuit 23 and differential circuit 24 cancelling the first carrier component included in the circuit 21, and phase detectors 26 and 27, are provided. Moreover, the quadruple modulator 25 in quadruple modulating the output of the circuit 24 with the exclusive OR signal of the output signals among the phase detectors 11, 12, 26, 27, and the adjustment amount calculation circuit 30 selecting the required control signal and adding it to the circuits 5, 6 are provided.
JP3779878A 1978-03-30 1978-03-30 Cross polarization discrimination compensation circuit Expired JPS5835419B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3779878A JPS5835419B2 (en) 1978-03-30 1978-03-30 Cross polarization discrimination compensation circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3779878A JPS5835419B2 (en) 1978-03-30 1978-03-30 Cross polarization discrimination compensation circuit

Publications (2)

Publication Number Publication Date
JPS54129815A true JPS54129815A (en) 1979-10-08
JPS5835419B2 JPS5835419B2 (en) 1983-08-02

Family

ID=12507510

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3779878A Expired JPS5835419B2 (en) 1978-03-30 1978-03-30 Cross polarization discrimination compensation circuit

Country Status (1)

Country Link
JP (1) JPS5835419B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4466132A (en) * 1981-04-15 1984-08-14 Nippon Electric Co., Ltd. Cross-polarization crosstalk elimination circuit
JPS60155236U (en) * 1984-03-27 1985-10-16 日本放送協会 Interference wave removal device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4466132A (en) * 1981-04-15 1984-08-14 Nippon Electric Co., Ltd. Cross-polarization crosstalk elimination circuit
JPS60155236U (en) * 1984-03-27 1985-10-16 日本放送協会 Interference wave removal device

Also Published As

Publication number Publication date
JPS5835419B2 (en) 1983-08-02

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