Wiggly Phase Shifters and Directional Couplers for Radio-Frequency Hybrid-Microcircuit Applications

A packaging technique which makes use of a wiggly (sawtooth) conductor-edge geometry between adjacent conductors has been developed for the fabrication of microwave hybrid microcircuit-directional couplers and phase shifters. The new technique provides approximately a 20-percent space saving as well as a significant improvement in circuit fabrication.