A 79-GHz Resonant Laminated Waveguide Slotted Array Antenna Using Novel Shaped Slots in LTCC

This letter presents a laminated waveguide (LWG)-based slotted array antenna in LTCC. The introduced novel slot shape derived from a standard longitudinal offset slot provides a further degree of freedom for the antenna design by bending the outer sections of the slot. Based on the characteristics of a single slot, the design procedure of an antenna array with amplitude tapering at a constant slot offset is presented. As an example, design, realization, and measurement of a 12-element array at 79 GHz with Dolph-Chebyshev power distribution with a sidelobe level of -20 dB are presented.