A W-band, Microfabricated, Tiled Phased Array Realized by Bricked Tapered Slot Antenna Element

In this paper, a microfabricated W-band tapered slot antenna (TSA) integrated with a rectangular micro-coaxial line (RμCL) to substrate integrated waveguide (SIW) transition is proposed. To integrate the vertical end-fire TSA array with the horizontally planar feed network in W-band, the transition from an SIW to an RμCL is designed. Then, a linear TSA array is built and achieves a bandwidth from 85 to 100 GHz $(S_{11} < -10\ \text{dB})$, which can be expanded to a two-dimensional scanning array. The linear array prototype is then fabricated and measured. The measured results show good agreement with the simulated results.