Fast Full-Wave Solution for Analysis of Circular-to-Rectangular-Waveguide Multiport Junction
Fast full-wave solution for accurate analysis of circular-to-rectangular-waveguide multiport junction is presented. The solution is based on the mode-matching method. The new solution scheme is proposed and verified
Mode-matching analysis of general waveguide multiport junctions
The rectangular waveguide multi-port junction with port waveguides of different cross-section type is investigated by a 3D mode-matching method based on the Green's function. For the coupling integrals, two formulations are evaluated: the first is frequency independent and involves three-fold summations, the second contains frequency dependent terms for orthogonal apertures but leads to a fast two-fold summation. A hybrid-T and a turnstile junction are chosen as an application example. The theory is verified by measurements at a WR62 six-port junction and at a short-circuited turnstile junction.
A 90 GHz-band monoblock type waveguide orthomode transducer
This paper presents a 90 GHz-band waveguide orthomode transducer (OMT) which is composed of a short circuited circular common waveguide and two branching rectangular waveguides dug through a metal block. An analysis and design of the OMT are performed using full wave mode-matching techniques. A 90 GHz-band OMT fabricated with the aid of the analysis and design technique has realized excellent performances.