Substrate Integrated Waveguide Based High Gain Planar Antipodal Linear Tapered Slot Antenna with Dielectric Loading for 60 GHz Communications

The 60 GHz band has the potential to provide high speed wireless communication. Substrate integrated waveguide (SIW) fed millimeter wave high gain antipodal linear tapered slot antenna (ALTSA) is presented in this paper. To obtain high gain the dielectric loading in addition to the corrugation structure is applied to the ALTSA. The use of SIW technology allows a highly efficient, compact and low cost planar design. The antenna is designed and simulated in an electromagnetic field simulation tool. A single element ALTSA is designed first. Then SIW power divider is used for designing 1 × 4 ALTSA array. To validate the proposed design, prototypes have been fabricated and measured. The simulated results agree well with the measured values which validates the proposed design. The measured return loss of single-element ALTSA and 1 × 4 ALTSA array is better than 12 dB over the entire 60 GHz band (57–64 GHz). The measured gain for single-element ALTSA and 1 × 4 ALTSA array is 18.7 ± 0.4 dBi and 22.9 ± 0.6 dBi respectively over the 60 GHz band.