Table 2: Summary of the maximum attenuation of the measurement and the upper bound of the KE, one-cylinder, and two-cylinder models.

FrequencyThe maximum attenuation (dB)
MeasurementKE model (upper bound)One-cylinder model (upper bound)Two-cylinder model (upper bound)

26 GHz12.6611.5114.2517.89
39 GHz19.0313.4615.6619.99