A wideband end fire antenna architecture in planar technology with fewer turns: helix antenna in planar technology adopting thickness of quarter wavelength is suggested. A wideband 24 GHz helix antenna with 2.25 turns in Rogers compressed RT 4350 technology is presented. The antenna has a bandwidth of 6.2 GHz for S11, gain of 9.3 dBi, half power width of 39.5° and 39° respectively in X-Z and X-Y planes. This helix antenna is characterized by wide bandwidth, high gain, high half power width, compactness and high gain turn ratio. It could also be utilized in antenna design for other frequency bands with compressed PCB technology, as well for on-chip THz antenna design.
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