Patent ID: 6094176
Filing Date: 2000-07-25
Classification: H01Q

Abstract:
A compact broadband log-periodic antenna comprising:a) a first generally planar insulating substrate having an inner side and an outer side;b) a second generally planar insulating substrate having an inner side and an outer side wherein said inner side of said second insulating substrate is in laminar juxtaposition with said inner side of said first insulating substrate;c) an electrically conductive feedline bonded between the inner side of said first substrate and the inner side of said second substrate, said feedline in electrical communication with a transmitter/receiver;d) a first log-periodic antenna array formed on the outer side of said first substrate, the antenna array including:a plurality of log-periodic antenna elements each with an axial length wherein at least one of said antenna elements is formed in a serpentine configuration to shorten said axial length of the element; anda common electrically grounded center conductor in electrical communication with the plurality of log-periodic antenna elements and in electrical communication with said feedline; ande) a second log-periodic antenna array formed on the outer side of said second substrate, the antenna array including:a plurality of log-periodic antenna elements each with an axial length wherein at least one of said antenna elements is formed in a serpentine configuration to shorten said axial length of the element; anda common electrically grounded center conductor in electrical communication with the plurality of log-periodic antenna elements.