Full W-Band Broadband High-Gain Monopulse Gap Waveguide CTS Array Antenna With Hybrid Beamformer and Comparator Network

This paper presents a broadband high-gain monopulse continuous transverse stub (CTS) array antenna based on gap waveguide technology, with its operating bandwidth covering the full W-band. The antenna comprises a novel hybrid beamformer and monopulse comparator network and a 16-element corporate-fed CTS array. A broadband sum and difference mode simultaneous excitation approach within the parallel-plate waveguide is explored, using a dual-mode planar horn with orthogonal port excitation. This ap