Multilayer 180$^{\circ}$ Coupled Line Hybrid Coupler

  title={Multilayer 180\$^\{\circ\}\$ Coupled Line Hybrid Coupler},
  author={Veljko M. Napijalo and Brian Kearns},
  journal={IEEE Transactions on Microwave Theory and Techniques},
This paper presents a theoretical analysis of a 180deg hybrid coupler based on coupled lines. The analysis is applicable for the case where the non-TEM nature of coupled lines must be considered. The method used to analyze the coupler is based on an analytical T matrix approach, which provides suitable expressions for the design of the coupler. The design procedure is demonstrated by the fabrication of a 24-GHz coupler using low-temperature co-fired ceramic. The realized coupler has non… CONTINUE READING