4–40 GHz Transmission Measurement of Indoor Building Materials at Normal Incidence

Transmission of common building materials, such as drywall, cinder block, gypsum board, and glass are characterized over the 4–40 GHz range for normal incidence in a compact anechoic chamber. Results indicate that many interior materials only exhibit modest increase in loss compared to UHF (1 to 4 dB), whereas cinder block can increase loss by as much as 20 to 30 dB.