This work presents experimental results of Rabi antenna characteristics using the coupled line microstrip circuit. It was constructed by a modified coupled line microstrip four-port network, which is known as an add-drop multiplexer. The driven AC input enters the device via an input port using the suitable frequency and coupled line microstrip ring radius. The multi-level system is generated by a wave-particle aspect before the two-level system is achieved. At the resonance, the transitions of the states induce the energy called whispering gallery mode (WGM) at the circuit center, which is the squeezed energy. The generated electron oscillation within the WGM envelope oscillated by the frequency is known as the Rabi frequency. By the successive filtering with continuous AC input via the selected port, the electron cloud warp speed can be generated and achieved inside the two-level transition. The constructed microstrip ring radius is 25 mm, and the experimental results of the Rabi antenna characteristics are in good agreement with the simulation results. The obtained resonant antenna oscillation frequency is 2.103 GHz. The electron cloud warp speed of 1.100c and time dilation of 0.006 µs are obtained.