Patent ID: 6518934
Filing Date: 2003-02-11
Classification: H01Q

Abstract:
An axial dipole antenna array, comprising:a plurality of mutually spaced apart parasitically driven dipole antenna sections arranged along a common longitudinal axis, each of said sections including, a pair of electrically short antenna dipole leg elements having an electrical length substantially less than a quarter wavelength, a respective local active transmit/receive module connected to the dipole leg elements, a continuous DC power line comprising a pair of capacitively coupled electrical conductors extending in an axial direction adjacent the dipole leg elements of said plurality of antenna sections for supplying DC power to respective transmit/receive modules thereof and including a choke circuit located adjacent the outer end of both the dipole leg elements for restricting the electrical length of the portion of the electrical conductors extending past the leg elements so that it is equal to or less than a half wavelength for reducing the mutual coupling between the DC power line and the dipole leg elements while forming a parasitic element for the respective dipole antenna section.