An identification appliance, such as a wristband, bracelet, patch, headband,
necklace,
card, sticker, or other wearable appliance, has an improved patch or microstrip
antenna. The microstrip antenna comprises a conductive patch layer, a conductive
ground layer and a dielectric layer in between the conductive layers. The microstrip
antenna is mounted to or disposed in the identification appliance, where preferably
the ground layer is closest to the user and the patch layer is furthest from the
user. Electronic circuits may be located in the dielectric layer, on a surface
of a conductive layer, or on another part of the identification appliance. Connecting
holes through the dielectric layer may allow circuits to be connected to a conductive
layer or layers. This improved antenna resolves detuning and communication degradation problems.
