Measurements of the radiation patterns from a planar array of bow-tie slot antennas coupled through an extended hemispherical lens are reported. The design operates over 10% bandwidth centred at 30 GHz with a return loss of 10 dB. A moderate directivity from the integrated lenses of 13 dB with half-power beamwidth (HPBW) of 10º is achieved. The reduced size of this design is suitable for the integration with millimetre wave circuits.
2. Colin, A. and P. Febvre, "Design of a wideband slot bow-tie antenna excited by a microstrip to CPW transition for application in the millimetre wave band," PIERS Proceedings, 1421-1425, Moscow, Russia, August 18-21, 2009.
3. Colin, A., E. Artal, E. Villa, D. Ortiz, and E. Martinez-Gonzalez, "Bow-tie slot antenna for 29 to 45 GHz band," Far East Journal of Electronics and Communications, Vol. 4, 69-76, 2010.