To use a wide range on a ceiling surface as an antenna by connecting a variable LC and a power source to the opposite edges of the opening long side of a building and facility member having an opening part and feeding electricity.
The building and facility integrated type slot antenna 1 is constituted by connecting the variable LC 6 consisting of a variable inductance 4 and a variable capacitor 5 and the power source 7 to the opposite edges 3 of the opening long side of the general building and facility member 2 having the opening part. Consequently, the general building and facility member 2 is in a style similar to a general slot antenna, and the electricity is fed from the power source 7 to the edges 3 and 3 of the general building and facility member 2 to make it possible to radiate a desired radio wave from the opening part. The variable inductance 4 functions as an extension coil or loading coil and the variable capacitor 5 functions as a shortened capacitor. The frequency of the desired radio wave is set by selecting its resonance frequency by adjusting the variable LC 6.
KOKUBU MAKOTO
SUGAYA YOSHIMASA
SATO HIROICHI
YAMAKAWA YUJI
NUMATA SHIGEO
