Fig. 4
From: A plasmonic meta-rotary travelling-wave oscillator with ultrahigh phase accuracy and figure of merit
Design of the Meta-RTWO resonator. a The structure of uncrossed spoof SPP TL (L1, L2, L8, L5, L6, and L4). b The structure of crossed jumpered spoof SPP TL (L3 and L7). c The phase-frequency curves of Meta-RTWO and MS-RTWO resonators with different lengths. d Characteristic impedance extraction of different spoof SPP units that make up the Meta-RTWO resonator
