JPS561640A - Cross polarization compensating precircuit - Google Patents

Cross polarization compensating precircuit

Info

Publication number
JPS561640A
JPS561640A JP7654279A JP7654279A JPS561640A JP S561640 A JPS561640 A JP S561640A JP 7654279 A JP7654279 A JP 7654279A JP 7654279 A JP7654279 A JP 7654279A JP S561640 A JPS561640 A JP S561640A
Authority
JP
Japan
Prior art keywords
output
detector
interference component
interference
polarized 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.)
Granted
Application number
JP7654279A
Other languages
Japanese (ja)
Other versions
JPS6331981B2 (en
Inventor
Junji Namiki
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP7654279A priority Critical patent/JPS561640A/en
Priority to US06/125,671 priority patent/US4321705A/en
Priority to DE3007827A priority patent/DE3007827C2/en
Publication of JPS561640A publication Critical patent/JPS561640A/en
Publication of JPS6331981B2 publication Critical patent/JPS6331981B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/10—Polarisation diversity; Directional diversity

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

PURPOSE:To absorb phase turning of the orthogonal polarization interference component due to the phase difference of the common carrier frequency before interference of the common carrier frequency before interference compensation and then realize the highly efficient system designing, by regenerating the interference component of the orthogonal polarization receiving wave and then piling it onto the corresponding detection output. CONSTITUTION:Synchronous detector 80 corresponding to the 1st polarized wave input signal includes multiplier 720, reference carrier oscillator 722 and LPF721; and synchronous detector 81 corresponding to the 2nd polarized wave input signal includes multiplier 730, reference carrier oscillator 732 and LPF731 each. The output of each detector is supplied to reference component regenerator 82, and at the same time the beats of the carrier frequencies of the 1st and 2nd polarized waves are obtained by multiplier 770 and LPF771. This beat plus the output of detector 81 are applied to double-balanced mixer 772, and the output of mixer 772 is supplied to filter 4,000 in order to erase the polarization interference component of the output of detector 80. Also the interference component to the 2nd polarized wave is regenerated 774 and 773 to be applied to filter 4,000', and the interference component of the output of detector 81 is absorbed.
JP7654279A 1979-03-02 1979-06-18 Cross polarization compensating precircuit Granted JPS561640A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP7654279A JPS561640A (en) 1979-06-18 1979-06-18 Cross polarization compensating precircuit
US06/125,671 US4321705A (en) 1979-03-02 1980-02-28 Digital equalizer for a cross-polarization receiver
DE3007827A DE3007827C2 (en) 1979-03-02 1980-02-29 Digital equalizer for a cross polarization receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7654279A JPS561640A (en) 1979-06-18 1979-06-18 Cross polarization compensating precircuit

Publications (2)

Publication Number Publication Date
JPS561640A true JPS561640A (en) 1981-01-09
JPS6331981B2 JPS6331981B2 (en) 1988-06-28

Family

ID=13608148

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7654279A Granted JPS561640A (en) 1979-03-02 1979-06-18 Cross polarization compensating precircuit

Country Status (1)

Country Link
JP (1) JPS561640A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007189694A (en) * 2006-01-13 2007-07-26 Thomson Licensing Apparatus and method for improving carrier-to-noise ratio of receiver with diversity

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007189694A (en) * 2006-01-13 2007-07-26 Thomson Licensing Apparatus and method for improving carrier-to-noise ratio of receiver with diversity

Also Published As

Publication number Publication date
JPS6331981B2 (en) 1988-06-28

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