New V-band MHMIC six-port architecture

This paper presents a new V-band MHMIC six-port architecture built on thin alumina substrate. This circuit is implemented using three 90° hybrid couplers and a new ring power divider. The S parameter measurements of the new ring power divider show wideband performances and high coupled-port phase and amplitude balance in the 57-64 GHz frequency band. The proposed six-port exhibits good phase and amplitude balance, while maintaining a good return loss. The proposed circuits are suitable for unlicensed indoor V-band high data-rate communications systems according to FCC standard.