Fig. 1: Ideal transmission line models. Z0 = 50 Ω. | Communications Physics

Fig. 1: Ideal transmission line models. Z0 = 50 Ω.

From: All-passive microwave-diode nonreciprocal metasurface

Fig. 1

Z1 and Z2 are the characteristic impedance of the transmission line branches. a OFF state (diodes not triggered, open stub) circuit model. b ON state (diodes triggered, shorted stub) circuit model. c Transient simulation model in OFF state. d Transmission in the OFF state. e Transmission in the ON state. f Trade-off between field asymmetry and the ON state transmission with l1 = 71∘, l2 = 90∘ at 2.3 GHz. The color of the dots represent the impedance contrast defined by Z2/Z1.

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