Abstract
In this work, we suggest a radar operation using overlap beamforming and present a wide-angle waveguide array antenna for implementation. First, we design a reduced-waveguide antenna to obtain wide-angle properties, and then we design a ridge-waveguide antenna to enlarge the beam-steering angle. At the designed center frequency of 9.375 GHz, the size of the ridge-waveguide antenna radiation aperture is 14 mm×8 mm, and a miniaturization rate of 48.2 % is obtained compared to the WR-90 standard waveguide. Using this scheme, a 1×8 array antenna was designed and manufactured. Consequently, the average beamwidth of the E-plane of each antenna was 120°, and the average beamwidth of the H-plane was 89.7°. For the beam-steering verification, several phase shifters corresponding to the beam-steering angles were fabricated, and it was confirmed that the beam-steering angle was consistent with the designed value via beam-steering measurements using the 1×8 array antenna. Accordingly, we confirmed that the miniaturized ridge-waveguide array antenna had characteristics suitable for wide-angle beam steering for a hexagonal array structure.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
