A multi-mode broad band patch antenna is provided that allows for the same aperture to be used at independent frequencies such as reception at 19 GHz and transmission at 29 GHz. Furthermore, the multi-mode broadband patch antenna provides a ferroelectric film that allows for tuning capability of the...http://www.google.fr/patents/US6292143?utm_source=gb-gplus-shareBrevet US6292143 - Multi-mode broadband patch antenna
