Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-09-12
Astronomy and Astrophysics
Astrophysics
3 pages, 4 figures, accepted for publication in the journal Electronics Letters
Scientific paper
We present the design and test results of a compact C-band orthomode transducer which comprises four rectangular probes orthogonally arranged in a circular waveguide, designed to work in the WG13 band. Measurements of the system in the frequency range 4.64 GHz to 7.05 GHz agree very well with simulation results and show a cross-polarisation level below -58 dB, a return loss of about -20 dB, and an insertion loss difference of less than 0.18 dB between the orthogonal polarisation modes across the full waveguide band.
Grimes Paul K.
Jones Michael E.
King Oliver G.
Yassin Ghassan
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