An attractive gyromagnetic resonator for the design of communication circulators is one for which the shape of the centre conductor between the top and bottom ferrite disks and ground plates incorporates a triplet of short metal strips or U.E.'s at the junction of a circular one. The complex gyrator circuit of one such geometry has recently been experimentally characterised in the literature. The introduction of U.E.'s in the resonator circuit provides a means of decoupling the coupling angle at the terminals of the circular plate from any external networks and a means of adjusting the susceptance slope parameter of the complex gyrator circuit of the junction. The study includes the practical design of one device at 2.0 GHz with a 23 dB return loss over a 30% bandwidth. © 2010 The Institution of Engineering and Technology.