Publications associated with C-Band All Sky Survey

A compact quad-ridge orthogonal mode transducer with wide operational bandwidth

IEEE Antennas and Wireless Propagation Letters Institute of Electrical and Electronics Engineers 17 (2018) 422-425

A Pollak, ME Jones

We present the design and the measured performance of a compact quad-ridge orthomode transducer (OMT) operating in C-band with more than 100% fractional bandwidth. The OMT comprises two sets of identical orthogonal ridges mounted in a circular waveguide. The profile of these ridges was optimised to reduce significantly the transition length, while retaining the wide operational bandwidth of the quad-ridge OMT. In this letter, we show that the optimised compact OMT has better than -15dB return loss with the cross-polarisation well below -40dB in the designated 4.0-8.5GHz band.

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