Dual polarization transmission system

Details Dual polarization transmission system Dual polarization transmission system

1990-09-18

1991-12-24

Blum, Theodore M.

Communications: directive radio wave systems and devices (e.g.,

Directive

Including polarized signal communication transmitter or...

455295, 455296, H01Q 2106, H01Q 2124, H04B 710

Patent

active

050756974

ABSTRACT:
A dual polarization transmission system for transmitting digital modulated signal each having a particular bandwidth by use of two polarized waves which have the same center frequency and are orthogonal to each other. The receiver side of the system demodulates radio frequency signals sent by a horizontally and a vertically polarized wave and coming in through a receiving antenna into IF signals. From the received signal of one polarization, an interference component of the other polarization generated on the basis of the cross-polar IF signal or demodulated signal is removed.

REFERENCES:
patent: 4575862 (1986-03-01), Tahara et al.
patent: 4757319 (1988-07-01), Lankl
patent: 4811021 (1989-03-01), Yoshimoto et al.
patent: 4992798, Nozue et al.
T. Ryu et al., "IF Band Cross Polarization Canceler", ICC '84 Links For The Future, IEEE International Conference on Communication, Amsterdam, The Netherlands, May 14, 17, 1984, pp. 1442-1446.

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