Patent ID: 6657601
Filing Date: 2003-12-02
Classification: H01Q

Abstract:
An antenna system intrinsically matching a resistive impedance of a balancing network, the balancing network having a first output port and a second output port driven substantially one hundred and eighty degrees out of phase with respect to one another, comprising:a first transmission line connected to the first output port of the balancing network at a first end, the first transmission line having a free end, the first transmission line including an inner conductor and a coaxially disposed outer conductor; a second transmission line connected to the second output port of the balancing network, the second transmission line having a free end, the second transmission line extending from the balancing network co-linearly with respect to the first transmission line, the second transmission line including an inner conductor and a coaxially disposed outer conductor; and a sleeve dipole antenna having a resistive impedance at resonance, the sleeve dipole having a first input port and a second input port, the free end of the first transmission line connected to the first input port of the sleeve dipole, the free end of the second transmission line connected to the second input port of the sleeve dipole, the sleeve dipole having two feed regions, the feed regions displaced from the point of connection of the sleeve dipole to the first and second transmission lines, the feed regions displaced so that the resistive impedance of the sleeve dipole at resonance matches the resistive impedance at the first and second output ports of the balancing network.