Patent ID: 7064729
Filing Date: 2006-06-20
Classification: H01Q

Abstract:
1. A dual band, omnidirectional antenna comprising: a first array having a plurality of linearly arranged first elements with a first frequency band and a first feed structure connecting said first elements, said first array being substantially in a first plane, a second array having a plurality of linearly arranged second elements with a second frequency band and a second feed structure connecting said second elements, said second array being aligned with said first array and substantially in a second plane that is parallel to and spaced a selected first distance from said first plane, and a third array having a plurality of linearly arranged parasitic third elements, said third array being aligned with said second array and substantially in a third plane that is parallel to and spaced, opposite said first plane, a selected second distance from said second plane, whereby said first array has an omnidirectional radiation pattern at said first frequency band and said second array has an omnidirectional radiation pattern at said second frequency band.