JPS561640A - Cross polarization compensating precircuit - Google Patents
Cross polarization compensating precircuitInfo
- 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
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.
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)
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 in receiver provided with diversity |
-
1979
- 1979-06-18 JP JP7654279A patent/JPS561640A/en active Granted
Cited By (1)
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 in receiver provided with diversity |
Also Published As
Publication number | Publication date |
---|---|
JPS6331981B2 (en) | 1988-06-28 |
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