Spanning upstream and downstream transformers/baluns, couplers, and power dividers/combiners, passive components for DOCSIS 3.1-compliant cable TV (CATV) and broadband Internet systems comply with DOCSIS 3.1 standard for high-bandwidth data transfer over existing hybrid fiber-coaxial (HFC) infrastructure. Bandwidths, insertion loss, return loss, power handling, distortion, and temperature stability characteristics optimize system performance.