Patent ID: 7492318
Filing Date: 2009-02-17
Classification: H01Q

Abstract:
1. An antenna assembly for installation to a vehicle body wall operable as an electrically large ground plane for the antenna assembly after installation thereto, the antenna assembly comprising a stamped metal monopole antenna mast, the antenna mast including: a first conductor tuned to at least one electrical resonant frequency for operating within a bandwidth ranging from about 800 MHz to about 1000 MHz; a second conductor tuned to at least one electrical resonant frequency for operating within a bandwidth ranging from about 1650 MHz to about 2700 MHz; an open slot extending at least partially between the first and second conductors to provide impedance matching; when electrically coupled to the electrically large ground plane, the antenna mast having a voltage standing wave ratio (VSWR) of about 2:1 or less at frequencies within a bandwidth ranging from about 800 MHz to about 1000 MHz and at frequencies within a bandwidth ranging from about 1650 MHz to about 2700 MHz.