A wireless communication device includes an antenna for wireless
communication with a remote interrogator. Several embodiments are
disclosed to increase the options available to designers of wireless
communication devices. In some embodiments, the antenna is a quarter
wavelength long with one end of the antenna being grounded to provide
desired impedance matching characteristics. The position of the ground
plane relative to the antenna is also varied between embodiments. The
connection from a wireless communication chip to the antenna is also
varied between embodiments to provide alternate structures.