Multi/Wide Band Printed Quad Helical Antenna

A technique is proposed for designing multiband and/or wide band printed quadrifilar helical antennas. The technique uses microstrip line tuning section in the vicinity of the feeding ports. This section contains an elongated body and a tail member extending away from the body. Geometry of the tail member is selected for modifying the radiating element impedance and broadening the resonance bandwidth. A four port antenna is designed for operating in wide band (24%, ) or in 3 frequency bands, with one of the bands being more than 24% : 1.88-2.12GHz, 2.3-2.4GHz and 3.4-3.8GHz (E-UTRA 39, 40, and 42& 43, respectively).