MULTIBAND ANTENNA AND METHOD FOR ADJUSTING RESONANT FREQUENCY THEREOF

摘要

A multiband antenna includes: a helical coil for transmitting/receiving a double radio wave; a dielectric member formed on an inside of the helical coil; a frequency changing portion formed on an inside of the dielectric member to adjust a resonant frequency; an insulator formed on one end portion of the helical coil; and a connector formed on the other end portion of the helical coil to serve as a connection line of the radio wave.