The present invention is directed to an antenna for radio-operated communication terminal devices. For effecting a multi-band antenna, a planar inverted-F antenna is provided that is designed in size for a predetermined, lower emission frequency and that includes one or more notchings or graduations...http://www.google.com/patents/US20010050635?utm_source=gb-gplus-sharePatent US20010050635 - Antenna for radio-operated communication terminal equipment
