US20060290573A1 - Multilevel antennae - Google Patents
US20060290573A1 US11/179,257 US17925705A US2006290573A1 US 20060290573 A1 US20060290573 A1 US 20060290573A1 US 17925705 A US17925705 A US 17925705A US 2006290573 A1 US2006290573 A1 US 2006290573A1 Authority US United States Prior art keywords antenna geometric multilevel band frequency Prior art date 1999-09-20 Legal status (The legal status …
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