High power multiplexer for dual polarized frequency reuse earth

Details High power multiplexer for dual polarized frequency reuse earth High power multiplexer for dual polarized frequency reuse earth

1980-08-25

1983-05-24

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 691, H04J 108, H04J 1100

Patent

active

043853781

ABSTRACT:
A modular arrangement of directional RF filters provides frequency multiplexing of signal sources at earth stations which are transmitting on two orthogonal polarizations. Each of the modules consist of a pair of 3 dB hybrid couplers coupled to each other through identical bandpass filters such that a signal applied to one of two input ports is output exclusively through an associated one of two output ports. The passbands of each of the modules are mutually exclusive. The output ports of each module are coupled to an output port of two adjacent modules, and two main outputs are taken from the two outer modules. The signals from the two main outputs are applied to two antennas having mutually orthogonal polarizations. The present invention may also be used as a demultiplexing receiver.

REFERENCES:
patent: 2825753 (1958-03-01), Hausz
patent: 3144647 (1964-08-01), Sichak
patent: 4029902 (1977-06-01), Bell et al.
"An Adaptive Crosspolar Cancellation System . . . " by O'Neill et al., Conference: Radio Spectrum Conservation Techniques, London, England, Jul. 7-9, 1980.

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