Investigations of corrugation issues in SIW based Antipodal Linear Tapered Slot Antenna at 60 GHz

In recent days, Substrate Integrated Waveguide (SIW) technology is attracting a lot of interest in the development of Millimeter-wave (MmW) based circuits due to its inherent advantages. This paper focuses on the design of Antipodal Linear Tapered Slot Antenna (ALTSA) using SIW technique for Wireless Local Area Network (WLAN) and Wireless Personal Area Network (WPAN) applications. The feeding is based on SIW structure which provides high Q-factors and allows planar printed circuit board fabrication process. In this paper ALTSA at 60 GHz without corrugation and with inner and outer rectangular corrugation have been discussed and compared with traditional structure with the new corrugated structures. It is noticed that, the proposed ALTSA designs are having better front to back ratio (F/B) and radiation patterns. Though, such developments have been reported earlier in other frequency bands, rarely any literature have reported of such developments at 60 GHz band.