Title :
A low sidelobe Rotman lens antenna feed by H-plane waveguide
Author :
Li Feng ; Liu Yi-zhi ; Huang Wei
Author_Institution :
Southwest China Inst. of Electron. Technol., Chengdu, China
Abstract :
A low sidelobe Rotman lens was developed that operates Ka band with 16 beams. The angular interval between beams is smaller than half power beam width. It was structured with H-plane waveguide. The sidelobe was reduced by cancelling patterns of adjacent two beam ports. It is proved in the testing result that the sidelobe is reduced about 10dB compared with no cancelling measure. The scale of lens is reduced obviously by metal posts phase shifter.
Keywords :
antenna feeds; antenna radiation patterns; lens antennas; phase shifters; waveguides; H-plane waveguide; angular interval; beam ports; cancelling patterns; half power beam width; low sidelobe Rotman lens antenna; phase shifter; Antenna feeds; Lenses; Metals; Microstrip antenna arrays; Microwave antenna arrays; Power transmission lines; Ka band; Rotman lens; low sidelobe; posts phase shifter; waveguide;
Conference_Titel :
Radar (Radar), 2011 IEEE CIE International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-8444-7
DOI :
10.1109/CIE-Radar.2011.6159769
