Phase slope reveals timing behavior missed by S11Convert already-unwrapped transmission phase into interval group delay. Preserve the complete reference-plane and antenna-pair setup; the result is not one antenna delay.Phase slope reveals timing behavior missed by S11Conceptual phase and delay plots; not a measured antenna response.Unwrapped S21 phase vs frequencyInterval delay: −Δφ / (360 Δf)Pair + cables + propagationSampled delay ripple³Ô¹Ïtv engineering illustration · conceptual, not to scale · no measured product data