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Mutual interference between linear crosspolarised radio channels at 11 GHz

Mutual interference between linear crosspolarised radio channels at 11 GHz

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© The Institution of Electrical Engineers
Published

Preliminary findings are presented from a study to determine the mutual interference between linear crosspolarised radio channels at 11 GHz over an 8½-mile path. In particular, severe crosspolarising effects were encountered when antenna primary-feed apertures were artificially wetted or allowed to become wet during rain and snow. Significantly improved values of isolation between channels have been measured under heavy rainfall with the antennas protected from rain.

Inspec keywords: interference; antennas; atmospheric electromagnetic wave propagation; microwave links; radiowave propagation

Other keywords: parabolic antennas; 11 GHz; microwave links; rain; fading; linear crosspolarized radio channels; mutual interference

Subjects: Lower atmosphere; Radiowave propagation

References

    1. 1)
      • Watson, P.A., Goodall, F.: `The mutual interference between orthogonally polarized radio channels at 11 GHz', 68, Technical report, April 1971.
    2. 2)
      • B.G. Evans , A.J. Fryatt , J. Read , P.T. Thompson , D.J.W. Turner . , Investigation of the effects of precipitation on parabolic antennas employing linear orthogonal polarisation at 11 GHz.
    3. 3)
      • Watson, P.A., Ghobrial, S.: `Cross polarizing effects of wet parabolic antennas', 71, Technical report, May 1971.
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