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.
@article{arxiv.0709.1777,
title = {Compact broadband planar orthomode transducer},
author = {P. K. Grimes and O. G. King and G. Yassin and M. E. Jones},
journal= {arXiv preprint arXiv:0709.1777},
year = {2013}
}
Comments
3 pages, 4 figures, accepted for publication in the journal Electronics Letters